МНОГОФУНКЦИОНАЛЬНАЯ УСТАНОВКА ПО ПЕРЕРАБОТКЕ ФЕКАЛЬНЫХ МАСС И ПИЩЕВЫХ ОТХОДОВ И СООТВЕТСТВУЮЩИЕ СПОСОБЫ

Изобретение относится к многофункциональным системам, оборудованию и соответствующим способам переработки фекальных масс и пищевых отходов. Система переработки фекальных отходов для выработки электроэнергии и питьевой воды содержит систему выработки электроэнергии с паровым приводом, включающую в себя узел котла, паровой двигатель и конденсатор, соединенные друг с другом, и контур первичной воды, по которому первичная вода проходит через узел котла, узел парового двигателя и конденсатор, причем узел парового двигателя вырабатывает электроэнергию; систему фекального ила, получающую по меньшей мере часть электроэнергии, вырабатываемой узлом парового двигателя, включающую в себя узел сушки ила и систему транспортировки ила, предназначенную для подачи влажного фекального ила в узел сушки ила, причем конденсатор прикреплен к узлу сушки ила и предназначен для передачи первичного тепла влажному фекальному илу для выпаривания из фекального ила первичной иловой воды и для сушки твердого топливного ...

СПОСОБ СУШКИ ШЛАМА

Изобретение относится к способу сушки шламов. Способ включает в себя предварительную обработку и смешивание исходных материалов, формирование и нагревание конгломератов шлама, сушку сформированных конгломератов шлама и извлечение энергии, дополнительную обработку, сортировку частиц продукта и промежуточное хранение конечного продукта. Предварительно обработанный шлам подают в технологическое устройство, в котором шлам формуют в конгломераты шлама соответствующего размера, повышают температуру технологического устройства. Энергия, поглощаемая в технологическом устройстве, передается конгломератам шлама, подвергаемым формованию. Сформированные конгломераты шлама подают в сушилку, в которой они движутся навстречу потоку осушающего воздуха, температура которого значительно ниже температуры конгломератов шлама, подвергаемых сушке. Изобретение обеспечивает энергетически эффективный способ для сушки шламов. 5 з.п. ф-лы, 3 ил.

СПОСОБ СУШКИ МАТЕРИАЛОВ

Изобретение относится к способу сушки материалов, в частности мелкодисперсных материалов. Согласно способу из суспензии, содержащей жидкость и твердые частицы, получают отжатый осадок на поверхности фильтрующей среды. При этом отжатый осадок и генератор расположены друг относительно друга так, что между отжатым осадком и генератором создается акустическое поле благодаря механическому контакту между отжатым осадком и генератором или структурным элементом, соединенным с генератором. Изобретение должно обеспечить интенсификацию процесса сушки. 7 з.п. ф-лы, 6 ил.

ИЛОФЛОТОКОМБАЙН ДЛЯ ОЧИСТКИ ВОДЫ

Предлагаемая полезная модель предназначена для очистки воды от различных загрязнений до качества воды, позволяющего сбрасывать воду в водоемы рыбохозяйственного назначения, и получать осадок, в том числе активный ил, в сгущенном виде. Илофлотокомбайн для очистки воды включает флотокомбайн, внутри корпуса 1 которого расположены перегородки 5, снабженный пенным желобом 6 с патрубком отвода пенного продукта 7 в шнековый сгуститель 22, имеющий внешний привод 17. С внешней стороны корпуса флотокомбайна установлены патрубки подвода рабочей жидкости 2, очищаемой воды 3 и патрубок отвода очищенной воды 8. На корпусе 1 флотокомбайна установлена крышка 4. Шнековый сгуститель 22 дополнительно соединен со сборником осветленной воды 21. Патрубок очищенной воды 8 флотокомбайна соединен трубопроводом с биореактором 9, выходной патрубок 10 которого соединен с мембранным аппаратом 12, выполненным с возможностью отвода концентрата в шнековый сгуститель 22 и отвода очищенной воды в резервуар очищенной воды 15. Сборник осветленной воды 21 соединен трубопроводом с узлом приготовления рабочей жидкости 26, который связан трубопроводом с патрубком подвода рабочей жидкости 2. Полезная модель позволяет повысить эффективность очистки воды с возможностью сброса ее в водоемы рыбохозяйственного назначения и получения осадка с уменьшенным остаточным влагосодержанием. 1 з.п. ф-лы, 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 195 481 U1 (51) МПК C02F 9/14 (2006.01) C02F 1/24 (2006.01) C02F 3/00 (2006.01) C02F 11/12 (2006.01) C02F 1/44 (2006.01) B03D 1/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК C02F 1/24 (2019.08); B03D 1/14 (2019.08); C02F 3/00 (2019.08); C02F 11/12 (2019.08); C02F 1/44 (2019.08); C02F 9/00 (2019.08) (21)(22) Заявка: 2019134179, 25.10.2019 25.10.2019 (73) Патентообладатель(и): Ксенофонтов Борис Семенович (RU) Дата регистрации: 29.01.2020 (45) Опубликовано: 29.01.2020 Бюл. № 4 1 9 5 4 8 1 R U (54) ...

УСТРОЙСТВО ДЛЯ ФИЛЬТРАЦИИ ДОННЫХ ОТЛОЖЕНИЙ

Изобретение относится к области оборудования для сбора, очистки и сгущения донных осадков сооружений, ливневых, промышленных стоков отложений рек и озер, а также донных отложений шлаконакопителей. Устройство для фильтрации донных отложений содержит емкость, перфорированную корзину, размещенную в емкости, и фильтрующий материал, размещенный в корзине. Корзина смонтирована с зазором от дна и стенок емкости. Фильтрующий материал выполнен в виде закрытого мешка, уложенного в корзину. В верхней части мешка смонтирован рукав для соединения внутреннего объема мешка с трубопроводом подачи донных отложений. В стенке емкости в нижней ее части выполнен разгрузочный люк, окно которого герметично сообщается с разгрузочным отверстием, выполненным в соответствующей разгрузочному люку части мешка с возможностью выгрузки через разгрузочный люк из мешка твердой фракции донных отложений. Для слива фильтрата в нижней части емкости ниже дна корзины выполнены сливные отверстия. Мешок смонтирован к емкости или ...

Устройство разделения твердой и жидкой фаз и подвижный элемент его наборного пластинчатого фильтра

Изобретение относится к области обработки материала с целью отделения от него жидкости, в частности к шнековым прессам специального назначения, используемым для отжима жидкости из различного рода сырья. Устройство включает в себя шнек, обеспечивающий уплотнение и перемещение материала внутри наборного пластинчатого фильтра, набранного из чередующихся неподвижных и подвижных пластинчатых элементов. Зазоры для выпуска фильтрата между пластинчатыми элементами фильтра последовательно уменьшаются по мере продвижения вдоль оси шнека от впускного к выпускному отверстию. С внешней стороны выпускного отверстия на валу шнека закреплена прижимная шайба, обеспечивающая возможность регулировки зазора, через который происходит выпуск отжатого материала. Плоскопараллельное перемещение подвижных пластинчатых элементов происходит в результате контактного взаимодействия их внутренней периферийной поверхности с внешней периферийной поверхностью винта шнека. Зона, в которой каждый из подвижных пластинчатых ...

СЕПАРАТОР ДЛЯ ЖИДКОЙ И ТВЕРДОЙ ФАЗ

... 1. Сепаратор жидкой и твердой фаз, содержащий:резервуар для очистки, имеющий впуск неочищенной жидкости, выпуск твердых частиц и выпуск фильтрата;множество трехслойных вращающихся фильтрующих блоков, расположенных между впуском неочищенной жидкости и выпуском твердых частиц, причем каждый из трехслойных вращающихся фильтрующих блоков включает дисковый фильтрующий элемент большого диаметра, дисковый фильтрующий элемент малого диаметра, имеющий диаметр меньше, чем дисковый фильтрующий элемент большого диаметра, множество дисковых фильтрующих элементов с выступом, причем каждый из них имеет диаметр меньший, чем дисковый фильтрующий элемент большого диаметра, но больший, чем дисковый фильтрующий элемент малого диаметра, и вращающийся вал; иуплотнительные элементы, выполненные на боковой стенке загрузочной стороны и боковой стенке разгрузочной стороны резервуара для очистки для сбора мелких частиц, содержащихся в очищаемой жидкости,причем концевая поверхность выступа каждого из дисковых фильтрующих ...

Способ обработки осадков сточных вод

VERFAHREN ZUR VERWERTUNG VON KLAERSCHLAMM

Method for stripping an air-permeable substrate, which is a mechanically dewatered digestate or sewage sludge from an anaerobic degradation process of a biogas plant or sewage treatment plant

Method for stripping an air-permeable substrate, is claimed. An independent claim is included for a device for stripping the air-permeable substrate (4) made of sewage sludge or digestate (2).

Appts. for clarifying clear slurry - comprises heating and de-watering slurry, evaporating filtrate and adding concentrate to de-watering stage

A clear slurry with a solids content of over 3% resulting from a preclarification stage and/or biological clarification is treated thermally and then by de-watering sepd. into solid material and filtrate. The filtrate by evaporation at under 100deg.C is divided into a distillate and a concentrate. The distillate is recycled to the biological clarification process and the concentrate is added to the solid material obtd. by de-watering. The mixture of concentrate and solid is pref. burnt. ADVANTAGE - The appts. for preclarification and biological clarification does not need enlarging.

Fluidised bed reactor contg. at least two heat exchangers - used independently or together for providing different quantities of heat simply

Fluid bed reactor has heating surfaces heated by heating medium for indirect heating of the fluid bed. The heating surfaces comprise at least two units (18,19) each independently heated, arranged one over the other. The units are built into the housing. Pref. the upper unit (19) has a smaller surface than the lower unit (18). The units comprise a bundle of tubes, a plate, or a curved tube, heat exchanger. ADVANTAGE - Depending on heating requirements, one exchanger is used, or some or all exchangers are used, so that the exact amount of heat is transferred to the bed. Reactor can be used for very different materials, without any costly adjustments.

Fällung, Flockung und Filtration von Schmutzwasser

Vorrichtung zur Reinigung von Wasser, das mit Verschmutzungen versetzt ist, a) mit einem ersten Behälter, in den mindestens eine Charge des Wassers eingeleitet werden kann, b) wodurch die Verschmutzungen ausfallen und sich als Schlamm am Boden des ersten Behälters absetzen, sodass sich im oberen Bereich des ersten Behälters Klarwasser bildet; c) mit mindestens einer Steuerungseinrichtung; d) mit einer Zuführpumpe zur Einleitung der mindestens einen Charge des Wassers in den ersten Behälter; e) wobei die mindestens eine Steuerungseinrichtung die Zuführpumpe so ansteuert, e1) dass die Förderleistung der Zuführpumpe zunimmt, bis die Zuführpumpe mit voller Förderleistung arbeitet; e2) dass die Zuführpumpe mit voller Förderleistung arbeitet, bis das Volumen des Wassers in dem ersten Behälter einen Schwellwert erreicht; und e3) dass die Leistung der Zuführpumpe zurückgefahren wird, sobald das Volumen des Wassers in dem ersten Behälter den Schwellwert überschritten hat.

Process for the simultaneous treatment of mechanically predewatered sewage sludge and dry biomass wastes and plant for performing the process

Process for the simultaneous treatment of mechanically predewatered sewage sludge containing preferably 20-25% DM and dry biomass wastes such as wastepaper or straw with coarse precomminution of the biomass, if necessary magnetic separation of iron pieces, intensive mixing of sewage sludge and biomass, pressing the mixture through a perforated matrix and drying the sausage-like pellets. In the plant for performing the process, for the precomminution of the biomass, the said biomass is periodically pressed against a slowly rotating comminution roller and the perforated matrix press used is a meat grinder or a similar screw press having a perforated matrix.

VERFAHREN ZUR ENTWAESSERUNG KOLLOIDALER MINERALISCHER UND MIKROBIALER SCHLAMMFOERMIGER ABFAELLE

VORRICHTUNG ZUM KONTINUIERLICHEN VERMISCHEN UND GRANULIEREN VON SCHLAMM MIT EINEM FESTSTOFF

VORRICHTUNG ZUR AUFZUCHT VON VIEH

VERFAHREN UND ANLAGE ZUR BEHANDLUNG VON WÄSSRIGEN SUBSTANZEN MIT ZEOLITHEN

Treating waste sludges with calcium oxide - to produce friable solids suitable for landfill or agricultural purposes

Waste aq. sludge is converted to a solid, friable and odour-free prod. by treatment with Ca oxide. The sludge is supplied to a treatment zone at a first rate while the Ca oxide is supplied at a second rate releated to the first so that when the sludge and Ca oxide are mixed an exothermic reaction occurs with the evolution of steam to form the desired prod. having pH >=12. The sludge and Ca oxide are introduced at the desired rates to one end of the treatment zone along which they are moved concurrently at a rate such that the reaction has effectively terminated by the time they reach the other end of the zone. The prod. is removed from this end of the zone and the steam is withdrawn. The method may be used to treat either oil well pumps, sewage sumps, or sludge dredged from the bottom of a lake or harbour. The pH value and the heat produced in the treatment zone deactivates any virus or bacteria present in the sludge. Similarly soluble toxic compounds initially present in the sludge are ...

Sludge dewatering plant - is compact assembly of thickener, coagulator and floccule filter

A device for the dewatering of sludge from industrial wastes and domestic sewage by the addition of flocculants consists of a unit which combines a thickener with a coagulator and a dewatering cylinder. The latter is designed as a vertical cylinder with a slightly larger hinged botom than the cover and with a filter cloth, supported by a frame of intercrossing wires. This dewatering device achieves a higher solids content in the dewatered sludge than any conventional plant. It can also be used as an intermediate bunker.

Verfahren zur Klärschlammverwertung

VERFAHREN UND GERAET FUER DIE VERFESTIGUNG VON FLUESSIGEN SCHLAEMMEN

Verfahren zur Aufbereitung von metallhydroxidhaltigen Schlaemmen als Vorbehandlung fuer ihre Entwaesserung

Incineration of sewage sludge giving ash useful as fertiliser

Process for incineration of sewage sludge comprises (a) dewatering the sludge by mixing with a predetermined amt. of absorptive cellulose fibre material (I) until the content of dry matter is at least 55%; (b) mixing with another material (II) to utilise the energy content of the mixt., so that the mixed prod. has a calorific value of at least 11000 kJ/kg; and (c) incineration at a temp. of a least 800 deg C.

SEWAGE DISPOSAL

... 1385949 Sewage disposal by combustion BABCOCK & WILCOX CO 26 July 1972 [17 Aug 1971] 34959/72 Heading F4B In a ship's sewage disposal system the sewage is treated, comminuted and delivered to a nozzle in the main furnace where it is sprayed into the combustion zone and burned. Fresh water at 9 is delivered to the ships galley, laundry and wash water system 10. The drainage 11 passes to a filter 12 from which part is drawn off by pump 15 to a sanitary water supply tank 14, the pump being controlled by sensors to keep the level in tank 14 at a desired level. This water is used in the sanitary system 19, the drainage 20 from which passes to disinfecting tank 18. The other part 17 of the water from filter 12 also passes to tank 18. Rotary agitators 21 keep the solids in suspension in tank 18 and the take off 30 passes to a main holding tank through a flow measuring device 32. Signals 33 from device 32 control the rate of supply of disinfectants from chemical mix tank 24. Overflow 42 from tank ...

METHOD AND A COMPOSITION FOR DEWATERING SILT

METHOD OF AND APPARATUS FOR COMPACTING FLUID SLUDGE

... 1444760 Sludge stirring and settling apparatus SOC GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES ALSTHOM 28 Nov 1973 [28 Nov 1972] 55295/ 73 Headings B1C and B1D Sewage sludge is concentrated in a vessel 5 having a sludge inlet 1, 3, 4, with a branch 2 feeding a flocculant, a clear liquid overflow 10, 11 and a rotary assembly o fperforate blades 7, which stir and agglomerate the flocculated sludge, and a perforate screw 12, which compresses the sludge particles and forces them through outlet 13. In Fig. 1 blades 7 and screw 12 rotate on a common shaft. In Fig. 2 (not shown) concentric shafts enable screw 12 to rotate slower than blades 12, and four sets of blades, screws and sludge outlets are provided in one vessel. Plate 19 is vertically adjustable to maintain a body of compacted sludge in outlet 13. Level sensors 6, 16 control the crosssection of outlet 13, the speed of screw 12 and the delivery of sludge to inlet 1 to maintain the level in the vessel between upper and lower limits ...

Effluent treatment process

Sewage treatment

... 897,176. Sewage. STERLING DRUG Inc. May 7, 1959 [May 16, 1958], No. 15721/59. Class 111. Sewage with B.O.D. of 200-300 p.p.m. settles in tank 12 where a portion of sludge is retained while further formation of sludge occurs in tank 18. From 60 to 85 % of sludge from both tanks is wet-air oxidized in chamber 28. The aqueous liquid phase remaining in the sludge is recycled via separator 40 to settling tanks.

Method for dewatering the sludge layer of an industrial process tailings pond

In order to compress the sludge layer of an industrial process tailings pond beyond the density which it will naturally reach after treatment by the addition of hydrolyzed starch flocculant, sand is distributed over the sludge layer as a water permeable surcharge which, by weight, further compacts the sludge to obtain additional dewatering.

Process for consolidating sewage sludge

Effluents are consolidated by addition of a weighting agent and an agglomerating agent followed by decantation and further addition of agglomerant. The agglomerants are generally natural and synthetic polyelectrolyte while the exemplified weighing agents are gypsum, coal ash, limestone, cement or coal waste.

A device and method for dewatering aquesous suspensions

A process for thickening digested sludge

Digested sludge is thickened by passing a gas, preferably air, through it at an intensity in the range of above 0.1 to 5 gas to 1 sludge, on a volume basis, per hour. Sludge can be thickened to greater than 5% solids in ten days, an improvement of nearly 10 times that of traditional practice. The gas may be passed through the sludge via a venturi. ...

Two tank fermentation system and method of operation

A fermentation device (100) comprising a fermenter (102) for fermenting organic material and providing a fermenter output material (106) is claimed, comprising an intermediate tank (108), linked through an outlet (112) from the fermenter and an inlet (110) to the intermediate tank, which has a mixing device (116), for conditioning the fermenter output material (106), thereby providing a conditioned material (114). Further in accordance with an embodiment, the fermentation device (100) comprises a mixing device (116) which may be paddle means for mixing the content of the intermediate tank (108). Methods for operating the device including control unit (152) and computer programs are further claimed.

Encapsulation of waste for storage

SEWAGE TREATMENT UNIT

... 1318103 Treating sewage D J N LIGHT and J DEVRIES 14 April 1970 [29 Oct 1969] 17698/70 Heading C1C Raw sewage flows into an aerating and holding tank 1 via inlet 2 and is strained at 4 before flowing over a series of inclined baffles 3 whereby it is aerated. Air is admitted at 8 into tank 1 and the sewage is continually recirculated by pump 5. A conveyer belt 9 removes aerated sewage at a constant rate from tank 1 by means of a plurality of buckets 10 which empty upon the upper of a series of inclined baffles 13 which mix the sewage in blender tank 5 with a coagulant or flocculant metered by pump 14. The resultant mixture flows via pipe 15 to a web of filter paper 16 in which a depression is formed to receive the mixture. The filter paper is fed from a supply roll 18 to a take-up roll 19 by a motor 20 which advances a fresh area of paper beneath the outlet of pipe 15 in response to a device which detects the level of unfiltered mixture on the paper. The filtered liquid then passes to a ...

SEWAGE SLUDGE TREATMENT PROCESS

... 1330672 Treating sludge STERLING DRUG Inc 22 Sept 1970 [29 Sept 1969] 45116/70 Heading C1C A process for treating sewage sludge comprises heating the sludge for up to 240 sees. at 190-230‹ C., cooling the sludge rapidly to below 100‹ C and filtering the sludge to obtain a supernatant liquid having a colour value of below 3000 APHA units and a BOD 5 value of 2-6 g/l., the amount of oxygen present during the heating step being not greater than that required to reduce the COD of the sludge by 3%. In one process the sludge is mixed with a small amounted of gas, e.g. air, CO 2 or N 2 , passed through a heat exchanger to preheat it, passed through a reactor in which it is heated to 190- 230‹ C. by steam injection and passed again through the heat exchanger to cool it. Gases are separated from the cooled sludge which is then mixed with lime, alum or ferric chloride and allowed to settle in a settling tank. The settled sludge is vacuum filtered and passed to an incinerator. The liquid separated ...

Treatment of polluted streams in place

System for sustainable treatment of municipal and industrial wastewater

UTILIZATION OF SLUDGES CONTAINING ORGANIC IMPURITIES FORMED MAINLY AS THE BY-PRODUCT OF SEWAGE PURIFICATION

REMOVAL OF LIQUID SOLID AND SEMI-SOLID WASTES

METHOD FOR TREATING AN EFFLUENT SUPERSATURATED WITH CALCIUM CARBONATE IN THE PRESENCE OF PHOSPHONATE PRECIPITATION-INHIBITING PRODUCTS

METHOD FOR TREATING AN EFFLUENT SUPERSATURATED WITH CALCIUM CARBONATE IN THE PRESENCE OF PHOSPHONATE PRECIPITATION-INHIBITING PRODUCTS

METHOD FOR TREATING AN EFFLUENT SUPERSATURATED WITH CALCIUM CARBONATE IN THE PRESENCE OF PHOSPHONATE PRECIPITATION-INHIBITING PRODUCTS

VERFAHREN ZUR ENTSORGUNG DER ABWAESSER VON ZELLSTOFFABRIKEN

EINRICHTUNG ZUR ZERKLEINERUNG UND AUSSCHEIDUNG VON IN EINER FLUSSIGKEIT SICH BEFINDENDEN GROB- UND FASERSTOFFEN

PROCEDURE FOR CUTTING INDIVIDUAL ORGAN UP OF I SUBSTANCES IN SUSPENSIONS OF MICROORGANISMS

PROCEDURE AND PLANT FOR THE PROCESSING OF DAMP PROPERTY

ÖLBINDEMITTEL

PROCEDURE AND SYSTEM FOR THE LASTING TREATMENT OF THE URBAN ONE AND MANUFACTURER OF WASTE WATER

VERFAHREN ZUR AUFARBEITUNG VON WASSERHAELTIGEN ORGANISCHEN RUECKSTANDSMASSEN

DEVICE AND PROCEDURE FOR DRYING SEWAGE SLUDGE

PROCEDURE FOR THE DISPOSAL OF THE WASTE WATER OF ZELLSTOFFABRIKEN

PROCEDURE AND PLANT FOR DRYING MUD

PROCEDURE FOR THE PRODUCTION OF MATERIAL OR MATERIAL MIXTURES IN FINE DISTRIBUTION OF ABSTENTIONS CELEBRATIONS HYDROXIDES

PROCEDURE FOR THICKENING FROM WASTE WATER DREDGING AND/OR OTHER ORGANIC DREDGING AS WELL AS MECHANISM TO THE EXECUTION OF THIS PROCEDURE

PLANT FOR DRYING SEWAGE MUD

PROCEDURE AND DEVICE FOR TREATING WASTE MATERIALS

PROCEDURE AND PLANT FOR TREATING MUD

PROCEDURES AND DEVICE FOR THE TREATMENT ONE FOR A THICK MUD DRAINED SEWAGE SLUDGE

PROCEDURE FOR THE PRODUCTION OF A TO PROTEINS AND VITAMINS REALMS OF PRODUCT AS WELL AS MECHANISM FOR THE EXECUTION OF THE PROCEDURE

PROCEDURE AND DEVICE FOR THE USE OF MICROWAVES

PROCEDURE AND PLANT FOR THE HYGENIC REMOVAL OF SALZHALTIGEM, ORGANIC SUBSTANCES EXHIBITING WASTE WATER

PROCEDURE FOR THE CONTINUOUS PROCESSING FROM NASSSCHLAMM AS WELL AS MECHANISM TO THE EXECUTION OF THE PROCEDURE

SYSTEM AND PROCEDURE FOR DRYING AN AQUEOUS SUBSTANCE

Vorrichtung mit einer Abscheidefläche und einem beweglichen Zusatzrost zum Entfernen von Siebgut aus einer strömenden Flüssigkeit

This invention refers to a device for separating and removing sieved material from a flowing liquid such as sewage, in which case the device has a sieve grate (1) with a sieve surface with a front side (2) pointing upstream while the device is operating, in which case the device has a supplementary grate (3) in a lower area of the sieve grate (1) placed upstream before the sieve grate (1), in which case the device has a drive (24) and a cleaning rake (4) that can be driven to revolve in a conveying direction with the help of the drive (24), in which case the operating cleaning rake (4) is moveable along at least one partial section of the front side (2) of the sieve grate (1) in order to remove the held-back sieved material and transport it towards a discharge opening (5) and wherein the cleaning rake (4) can be moved along a back side (6) of the supplementary grate (3) pointing downstream while it is moving in order to remove sieved material held back by the supplementary grate (3) and ...

PROCEDURE FOR THE POLLUTION FREE AND HYGENIC MUD DISPOSAL AND SLUDGE TREATMENT PLANT

PROCEDURE AND DEVICE FOR DRAINING DREDGING.

DEVICE FOR THE DRYING PROCESS OF SEWAGE SLUDGE.

PROCEDURE FOR THE PROCESSING OF CLARIFYING DREDGING AND/OR INDUSTRIAL DREDGING WITH ORGANIC PORTIONS OF MEANS OF THE CONVERSION PROCEDURE.

Aufbereitungsanlage für von der Reinigung von Betonmischern stammende Schlämme

A plant for treating slurries deriving from the washing of concrete mixers (2), comprising a separator (3) provided with a first tank (5) for receiving the discharge liquid of a concrete mixer (2), said receiver tank (5) being coupled to first means (6) for mechanically separating the coarse residues contained in the discharge liquid, and an accumulation tank (23) for a treated liquid, an aperture of said first tank (5) being disposed in fluid passage connection with an inlet of a decantation tank (14), the decantation tank (14) presenting at least a first zone (14A) for accumulating treated liquid substantially free of suspended particles, a second zone (14C) for accumulating slurry formed from sedimented particles, and a hopper shaped intermediate zone (14B) arranged to interconnect the first (14A) and second (14C) zone, said intermediate zone (14B) and said second zone (14C) presenting respective first (18) and second (20) stirrer means arranged to prevent the particles present in said ...

PROCEDURES AND DEVICE FOR THE ELIMINATION OF LIQUIDS FROM HETEROGENEOUS FLUESSIGKEITSMASSEGEFSSGEN, FOR EXAMPLE DRAINAGE AND/OR THICKENING PROCEDURE FOR LOCAL ONES OR MANUFACTURERS DREDGE.

PROCEDURE AND PLANT FOR USING SEWAGE SLUDGE.

PROCEDURE AND DEVICE FOR THE CONTINUOUS DRYING PROCESS OF PROTEIN CONTAINING MUD

PROCEDURE FOR DRYING SEWAGE SLUDGE.

PROCEDURE FOR THE EXPLOSION PROOF DRYING PROCESS OF CLARIFYING DREDGING.

PROCEDURE AND PLANT FOR THE TREATMENT OF AQUEOUS SUBSTANCES WITH ZEOLITES

Procedure for the drainage from waste water dredging from purification plants and device to its execution

PROCEDURE FOR THE TREATMENT OF RAW CONDENSATES FROM THE SLUDGE DRYING AND DEVICE FOR IT

PROCEDURE FOR THE WASTE PROCESSING AS WELL AS ROTATING FURNACE FOR THIS PURPOSE.

VERFAHREN ZUR UMWELTFREUNDLICHEN UND HYGIENISCHEN SCHLAMMENTSORGUNG UND SCHLAMMBEHANDLUNGSANLAGE

Procedure for the drainage of mud in sewage systems

PROCEDURE FOR REMOVING A FROM BLAST GRAIN AND COATING MATERIAL REMAINDERS OF EXISTENCES AQUEOUS ONE MUD SUSPENSION

PROCEDURE AND DEVICE FOR THE DRYING PROCESS OF DAMP PROPERTY

Procedure for drying mud, in particular Abwasserchlamm

WASTE TREATMENT

Sludge digestion method

APPARATUS FOR PRODUCING SLUDGE

Method for treating waste-activated sludge using elecroporation

Method for separating liquid from suspended matter in a sludge and device for same

The invention relates to a method for separating the liquid part from the suspended matter in a sludge supplied in a continuous flow at a flow rate of Q ...

METHOD FOR THE TREATMENT OF SLURRIES BY THE COMBINED ACTION OF PRESSURE AND ELECTRO-OSMOSIS

OXYGENATION IN SLUDGE THICKENER APPARATUS

Compact wastewater concentrator and pollutant scrubber

Abstract A compact and portable liquid concentrator (10) includes a gas inlet (20), a gas exit (22) and a flow corridor (24) connecting the gas inlet and the gas exit, wherein the flow corridor includes a narrowed portion (26) that accelerates the gas through the flow corridor. A liquid inlet (30) injects liquid into the gas stream at a point prior to the narrowed portion so that the gas-liquid mixture is thoroughly mixed within the flow corridor, causing a portion of the liquid to be evaporated. A demister (34) or fluid scrubber downstream of the narrowed portion removes entrained liquid droplets from the gas stream and re-circulates the removed liquid to the liquid inlet through a re-circulating circuit (42). Fresh liquid to be concentrated is also introduced into the re-circulating circuit at a rate sufficient to offset the amount of liquid evaporated in the flow corridor. Figure 1 a z w ~cW we Me CL, C) ...

Waste material process and product

... 26A method of producing a final product from a wastewater dissolved air flotation (DAF) sludge which includes the following dewatering step: 5 - dewatering of the sludge, an aged sludge or a pre-processed sludge to produce a sludge filter cake and a filtrate; such that the pre-processed is sludge, or aged sludge, that has undergone additional processing steps prior to dewatering and aged sludge is sludge that has been stored for a period of time, wherein the dewatering step is a mechanical dewatering step 10 carried out at a maximum of 30°C which results in a sludge filter cake that does not flow under its own mass.

Device for concentrating object to be treated

A device for concentrating an object to be treated has a filter body (19) in which a movable plate (18) is disposed between adjacent annular fixed plates (17), the moveable plate being formed in the same annular shape. Sludge filtrate passes through filtrate inflow gaps (g) between the fixed plates (17) and the movable plate (18) before being caused to flow into the filter body (19). The movable plate (18) is moved so that solids in the sludge are kept from clogging the filtrate inflow gaps (g). A cleaning member (54) is caused to rub against the outer peripheral surfaces (22) of the fixed plates (17) so that solids adhering to the outer peripheral surfaces (22) of the fixed plates (17) are scraped off. The movable plates (18) of said device are caused to perform a circular movement by eccentric cams (38, 138) fixed to the shaft (15). The cleaning member (54) is fixed to the shaft (15), and caused to rotate around the shaft (15) by the rotation of the shaft (15) so that solids adhering ...

Process and apparatus for treating sludge

An apparatus and process for removing moisture from sludge. The apparatus comprises a housing having an inlet and outlet for respective receipt and discharge of the sludge. A conveyor is located in the housing and is configured to transport the sludge from the inlet to the outlet. The apparatus further comprises a heater to heat the sludge to remove moisture therefrom whilst the sludge is being transported by the conveyor. The apparatus also comprises a vacuum pump arranged to extract air from the apparatus and, at the same time, to cause moisture removed from the sludge to flow therefrom together with the extracted air.

Waste treatment system

A waste treatment system may include a liquid separator for removing water from solid waste, a mixing tank connected to the liquid separator for mixing the solid waste with an oxidizing agent, a heat exchanger connected to the mixing tank for collecting heat generated by an exothermic reaction caused by mixing the oxidizing agent with the solid waste, and a sanitizer connected to the liquid separator to sanitize the water removed from the solid waste. A waste treatment method may involve separating water from solid waste in a liquid separator, mixing the solid waste from the liquid separator with an oxidizing agent in a mixing tank connected to the liquid separator to cause an exothermic reaction, collecting heat from the exothermic reaction in a heat exchanger coupled with the mixing tank, and sanitizing the water from the liquid separator in a sanitizer.

Комбинированная установка для переработки и последующей утилизации осадков, образующихся от очистки сточных вод на цбп производствах

Комбинированная установка применяется для переработки и последующей утилизации осадков, образующихся от биологической и механической очистки сточных вод на целлюлозно-бумажном производстве.Установка для переработки и утилизации осадков сточных вод представляет собой последовательно расположенные блоки сушки, магнитной и реагентной обработки, разделенные между собой функциональными перегородками. Каждый из блоков имеет свое технологическое назначение: в блоке сушки осуществляется процесс выведения воды из состава отхода, затем в блоке магнитной обработки происходит выделение из составной консистенции тяжелых металлов, после чего вещество поступает в блок реагентной обработки, где происходит разделение шлама на известковую и органическую составляющую.Технологической особенностью установки для переработки и утилизации осадков сточных вод является то, что она снабжена функциональными решетчатыми перегородками, отверстия которых регулируются по диаметру в соответствии с необходимостью технологических процессов сушки, просеивания, магнитной и реагентной обработки. Известь может быть в дальнейшем применена для известкования закисленных почв или в строительстве, органика может быть использована как удобрение в сельскохозяйственных целях. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 168 298 U1 (51) МПК C02F 11/00 (2006.01) C02F 11/12 (2006.01) C02F 11/14 (2006.01) C05F 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016109330, 15.03.2016 (24) Дата начала отсчета срока действия патента: 15.03.2016 (72) Автор(ы): Трейман Марина Геннадьевна (RU) (73) Патентообладатель(и): Трейман Марина Геннадьевна (RU) R U Дата регистрации: 27.01.2017 Приоритет(ы): (22) Дата подачи заявки: 15.03.2016 Адрес для переписки: 195276, Санкт-Петербург, Суздальский пр-кт, 63, корп. 3, кв. 110, Трейман Марине Геннадьевне 1 6 8 2 9 8 R U (57) Формула полезной модели 1. Комбинированная установка для переработки и ...

Устройство для очистки жидкости от твердых частиц

Полезная модель относится к области очистки жидкостей от твердых частиц, в том числе к очистке бытовых и промышленных сточных вод от твердофазных загрязнений.Сущность полезной модели заключается в том, что в устройстве для очистки жидкости от твердых частиц, включающем накопительную емкость, узел подвода очищаемой жидкости, узел отбора очищенной от твердых частиц жидкости из накопительной емкости, шнековое приспособление для отделения от очищаемой жидкости твердых частиц, включающее установленный в накопительной емкости наклонно к ее донной части шнек, размещенный в трубчатом корпусе, а также узел отбора твердых частиц из верхней части корпуса шнека, согласно полезной модели узел подвода очищаемой жидкости выполнен с обеспечением ее подачи в нижнюю часть корпуса шнека, поверхность трубчатого корпуса шнека имеет сквозные отверстия для отвода жидкости из корпуса шнека, при этом отверстия снабжены экранирующими элементами, нижняя часть каждого из которых выполнена в виде ножки, свободно установленной в сквозном отверстии, а верхняя часть выполнена в виде шляпки, перекрывающей сквозное отверстие.Техническим результатом, достигаемым при реализации полезной модели, является обеспечение высокой степени очистки жидкости от твердых частиц. 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 169 956 U1 (51) МПК C02F 11/12 (2006.01) B01D 43/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016144441, 11.11.2016 (24) Дата начала отсчета срока действия патента: 11.11.2016 (73) Патентообладатель(и): Иткин Герман Евсеевич (RU) 10.04.2017 Приоритет(ы): (22) Дата подачи заявки: 11.11.2016 (56) Список документов, цитированных в отчете о поиске: RU 2330734 C1, 10.08.2008. SU Адрес для переписки: 190031, Санкт-Петербург, а/я 341, Степановой Н.И. 1068400 A1, 23.01.1984. SU 1836302 A3, 23.08.1993. JP 2003170196 A, 17.06.2003. JP 2004322074 A, 18.11.2004. R U (57) Формула полезной модели Устройство для ...

Sewage treatment plant

Waste water conditioning has nearly 150 years of history. During this time, a method has developed that is considered to be state of the art. While this method meets the requirements at hand, it is complicated and expensive. The novel method breaks down the rigidly entrenched method and simplifies it. In a plurality of stages, the only energy that is used is gravity, which is readily available and free of cost. Thus, an “alternative sewage treatment plant” has been developed, which has a simpler method and is less expensive in terms of investment costs and operating costs, at the same capacity, and requires only a fraction of the previous required surface area. The most important characteristic of the invention is that the novel method separates solids from waste water immediately after entering the sewage treatment plant. Mechanically purified water is much faster, easier and less expensive to purify. The paths pursued for conditioning of the sludge are also new. The sludge is regarded as an energy source or recyclable material, which should be utilized accordingly. According to the invention, the prerequisite for utilizing the sludge is also created by economically drying it to 95 to 98% dry substance.

Process for treatment of wastewater with a modular biological fluidized bed reactor system

A biological wastewater treatment process and modular apparatus wherein activated sludge is recirculated in all of aeration, fluidized bed and return sludge phases in the apparatus.

Method for treating organic waste and method and apparatus for producing solid fuel/compost using zero discharge ace system

The present invention relates to a method and apparatus for treating organic waste and producing solid fuel or compost from the treated organic waste.

Apparatus and method for de-watering of slurries

A system for dewatering a stream of slurry has a first and a second separator. The first separator removes objects above a first size, to produce a stream of primary treated slurry. The second separator removes objects above a second size from the primary treated stream, the second size being smaller than the first size. Optionally, a third separator removes objects above a yet smaller third size from the stream of secondary treated slurry. The first separator has a plurality of sieve mat supports alternately connected to a main support frame section and a movable support frame section so that the flexible sieve mat can be agitated by the movable support frame section, a collector being provided for collecting the primary treated slurry passing through the flexible sieve mat. In an optional step, water contained in the separated solids is removed.

Methods and Systems for Processing Dredge Spoils

Methods and systems including processing dredge spoils to reclaim soil therefrom. The techniques may include a feed system for receiving dredge spoils, a dewatering system for removing water from the dredge spoils, and a grinder/mixer for grinding the dredge spoils from the dewatering system while mixing the dredge spoils with one or more additional materials. 1. A system for processing dredge spoils , comprising:a feed system that receives dredge spoils;a dewatering system that removes water from the dredge spoils; anda grinder/mixer that grinds the dredge spoils from the dewatering system while mixing the dredge spoils with one or more additional materials to give a reclaimed soil product.2. The system of claim 1 , wherein the feed system has a feed tank that receives the dredge spoils from a dredging operation and/or from a Dredge Material Placement Area (DMPA).3. The system of claim 1 , wherein the feed tank comprises a frac tank.4. The system of claim 1 , wherein the feed system comprises an agitation tank that mixes the dredge spoils from the feed tank.5. The system of claim 4 , comprising a sampling system configured to sample or facilitate sampling of the dredge spoils from the agitation tank.6. The system of claim 4 , comprising a chemical treatment system that injects a chemical into the dredge spoils in the agitation tank.7. The system of claim 1 , wherein the dewatering system comprises a filter press to remove water from the dredge spoils.8. The system of claim 1 , wherein the grinder/mixer comprises a pug mill.9. The system of claim 1 , comprising:a bagging system to bag the reclaimed soil product; anda solids conveyer to transport the reclaimed soil product from the grinder/mixer to the bagging system.10. The system of claim 1 , wherein the reclaimed soil product comprises topsoil claim 1 , compost claim 1 , and/or bedding soil.11. A method for processing dredge spoils claim 1 , comprising:receiving dredge spoils to an inlet tank in a feed system; ...

MICROWAVE PROCESSING OF WASTEWATER SLUDGE

Methods for treatment of sludge with microwave irradiation for improving its dewatering are provided. In one embodiment, the method includes exposing the sludge to microwave irradiation at a power density of between about 3 W/ml and about 17 W/ml. Turbidity, total solids content and overall dewaterability are improved when the microwave irradiation treatment is combined with another method for dewatering sludge, such as enzyme treatment, conditioning with a flocculating agent and mechanical dewatering. 1. A method for treating sludge , the method comprising:exposing the sludge to microwave irradiation at a power density of about 3 W/ml to about 17 W/ml.2. The method of claim 1 , wherein the microwave irradiation is at a power density of about 7 W/ml to about 13 W/ml.3. The method of claim 1 , wherein the microwave irradiation is at a power density of about 10 W/ml.4. The method of claim 1 , wherein the microwaves are in the frequency range of about 0.4 GHz to about 6 GHz.5. The method of claim 1 , wherein the microwaves are in the frequency range of about 0.915 GHz to about 2.45 GHz.6. The method of claim 1 , wherein the sludge is exposed to the microwave irradiation for about 1 second to about 60 seconds.7. The method of claim 1 , wherein the sludge is exposed to the microwave irradiation for about 5 seconds to about 50 seconds.8. The method of claim 1 , wherein the sludge is exposed to the microwave irradiation for about 10 seconds to about 30 seconds.9. The method of claim 1 , wherein an enzyme is mixed with the sludge prior to microwave irradiation exposure.10. The method of claim 1 , wherein a flocculating agent is mixed with the sludge following microwave irradiation.11. The method of claim 1 , further comprising subjecting the sludge to dewatering by mechanical means.12. The method of claim 1 , wherein the sludge is biological sludge.13. The method of claim 9 , wherein the enzyme is amylase.14. The method of claim 1 , wherein the microwave irradiation is ...

Remediation of Slurry Ponds

System and methods for remediating a slurry pond are disclosed herein. A method includes distributing a material over a surface of the slurry pond, wherein the slurry pond includes residues from a plant operation. A method also includes placing a load on the material, wherein the load causes the material to sink below a level of a supernatant but to remain above a layer of sludge in the slurry pond. 1. A method for remediating a slurry pond , comprising:distributing a material over a surface of the slurry pond, wherein the slurry pond comprises residues from a plant operation; andplacing a load on the material, wherein the load causes the material to sink below a level of a supernatant but to remain above a layer of sludge in the slurry pond.2. The method of claim 1 , wherein the slurry pond comprises a sewage remediation pond claim 1 , a fly ash impoundment dam claim 1 , a tailings pond claim 1 , a waste water treatment pond claim 1 , a cement processing waste pond claim 1 , an agricultural waste pond claim 1 , a landfill runoff pond claim 1 , a food processing waste pond claim 1 , a mine tailings pond claim 1 , or a body of water with an accumulation of sediments claim 1 , or any combinations thereof.3. The method of claim 1 , wherein the material comprises a geotextile or geotubes claim 1 , or any combination thereof.4. The method of claim 1 , wherein placing the load on the material comprises distributing sand on top of the material.5. The method of claim 1 , wherein distributing the material over the surface of the slurry pond comprises using a barge to distribute the material.6. The method of claim 1 , comprising using a mechanism to control a flotation of the material claim 1 , wherein the mechanism comprises a diaphragm claim 1 , weighted buoys claim 1 , floats claim 1 , or a selection of a density of the material that causes the material to be at an interface between the layer of sludge and the level of supernatant claim 1 , or any combinations thereof.7. ...

Sludge concentrator assembly incorporating upper centrifugal separator and lower barrier filter and exhibiting high flow velocity clean fluid outlet combined with low flow velocity solid entrapment

A dual stage filter assembly for use in a fluid cleaning and sludge removal operation. An upper stage centrifugal separator incorporated into a first vessel. A lower stage baffle filter is incorporated into a second vessel, such that a dirty fluid flow delivered to the upper stage separator includes a clean outlet along with a separate dirty outlet which is delivered to an inlet of the lower stage filter for subsequent filtering and outflow. A convex collection element facilitates delivery of dirty fluid to the lower stage filter and includes a cone shaped separator element and can be either fixed or removable relative to the upper stage separator. An ascending pipe from the upper separator evacuates a clean fluid flow resulting from a negative pressure created within the upper separator concurrent with the dirty outlet from the upper stage being directed through the baffle filter in the lower stage.

SLUDGE TREATMENT SYSTEM AND METHOD

Apparatus for treating a body of an input material comprising an extrudable part and a non-extrudable part comprises at least one extruding assembly . The extruder for converting the extrudable part into an extruded part. The extruder is located downstream of an inlet for the input material to the passage and upstream from a first outlet from the passage for the extruded part and a second outlet from the passage for the non-extrudable part. The apparatus further comprises a mechanism cooperating with the passage for directing the extruded part to the first outlet and the non-extrudable part to the second outlet 1. Apparatus for treating a body of an input material comprising an extrudable part comprising a sludge or clay and a non-extrudable part , the apparatus comprising:at least one extruding assembly comprising a body defining a passage for the input material and an extruder for converting the extrudable part into an extruded part;the extruder being located downstream of an inlet for the input material to the passage and upstream from a first outlet from the passage for the extruded part which first outlet is defined in a sidewall of the passage and a second outlet from the passage for the non-extrudable part which second outlet is downstream from the first outlet; andmeans for receiving the extruded part which means comprises a conveyor in cooperating relationship with the first outlet for conveying the extruded part.2. Apparatus as claimed in comprising a mechanism cooperating with the passage for directing the extruded part to the first outlet and the non-extrudable part to the second outlet.3. Apparatus as claimed in comprising means for receiving the non-extrudable part cooperating with the second outlet.4. Apparatus as claimed in wherein the extruder arrangement is mounted above the conveyor and wherein the extruded part is deposited through the first outlet and under the influence gravity onto the conveyor.5. Apparatus as claimed in wherein the conveyor ...

PROCESS FOR MODIFYING THE STRUCTURE OF AN ORGANIC SLUDGE

The present invention relates to a process, and respective operating apparatus, for modifying the structure of a sludge, in particular an organic sludge originating from a purification treatment of waste water, of the civil and industrial type, to be subjected to dehydration and/or drying, wherein the sludge is exposed to the action of an electric field generated by direct current. 1. Process for modifying the structure of an organic sludge to be subjected to drying , comprising a step in which said organic sludge , being in the form of a wet solid with a content of dry matter equal to or higher than 20% by weight of the total weight of the sludge , is exposed to the action of an electric field generated by direct current , which is comprised between 30 V/0.01 m and 100 V/0.01 m.2. Process according to claim 1 , wherein said electric field is comprised between 30 V/0.01 m and 70 V/0.01 m.3. Process according to claim 1 , wherein said sludge is exposed to said electric field for a time period comprised between 2 seconds and 10 minutes claim 1 , so as to cause in said sludge the release of intracellular water in a quantity comprised between 5% and 40% in weight over the total weight of the sludge.4. Process according to claim 1 , wherein said electric field is generated by a positive pole and by a negative pole between which said sludge is fed in a continuous manner.5. Process according to claim 1 , wherein said sludge claim 1 , following said exposure to said electric field is subjected to a drying step.6. Process according to claim 1 , wherein said sludge claim 1 , at the same time of said exposure to said electric field claim 1 , is subjected to a heat drying step.7. Process according to claim 1 , wherein said poles claim 1 , positive and negative claim 1 , consist of a first roller and a second roller of a two-cylinder calender machine.8. Process according to claim 7 , wherein said first and second rollers rotate at different velocities to each other.9. Process ...

Fuel system and process for its production for environmental protective energetic use of urban sewage sludge

The present invention relates to a fuel system and to a process for the production of such a fuel system by using urban sewage sludge. Environment protective energetic use of urban sewage sludge and the reduction of fossil Carbon dioxide are the important goals. The fuel system according to the present invention shows a content of fossil carbon which is clearly reduced compared to that of fossil fuels while the fuel-technological properties are the same. Thus the emission of the carbon dioxide based on fossil carbon is notably reduced during the use of the fuel system according to the invention. In one embodiment of the process according to the invention, the fuel system according to the invention is provided consisting of different fossil regular fuels and urban sewage sludge as biogenic carbon donor, with biomasses serving as a biogenic carbon donor.

Selenium recovery from bioreactor sludge

Wastewater, for example flue gas desulphurization blowdown water, containing soluble selenium is treated in a bioreactor. Microorganisms in the reactor reduce the selenium to elemental selenium, which is insoluble. The elemental selenium is discharged from the reactor in waste sludge also comprising biomass and other suspended solids. Non-microbial suspended solids are removed by way of acid dissolution followed by de-watering. The remaining sludge is burned at a temperature below the selenium oxidation temperature to remove biomass while leaving selenium particles behind.

Device with a Separation Surface and a Movable Supplementary Grate for Removing Sieved Material from a Flowing Liquid

This invention refers to a device for separating and removing sieved material from a flowing liquid such as sewage, in which case the device has a sieve grate () with a sieve surface with a front side () pointing upstream while the device is operating, in which case the device has a supplementary grate () in a lower area of the sieve grate () placed upstream before the sieve grate (), in which case the device has a drive () and a cleaning rake () that can be driven to revolve in a conveying direction with the help of the drive (), in which case the operating cleaning rake () is moveable along at least one partial section of the front side () of the sieve grate () in order to remove the held-back sieved material and transport it towards a discharge opening () and wherein the cleaning rake () can be moved along a back side () of the supplementary grate () pointing downstream while it is moving in order to remove sieved material held back by the supplementary grate () and transport it towards a discharge opening (). According to the invention, it is suggested to move the supplementary grate () relative to the sieve grate (). 220-. (canceled) This invention refers to a device for separating and removing sieved material from a flowing liquid such as sewage, in which case the device has a separation surface with a front side pointing upstream while the device is operating, in which case the device has a supplementary grate with a sieve area in a lower area of the separation surface placed upstream preceding the separation surface, in which case the device has a drive and a cleaning rake that can be driven to revolve in a conveying direction with the help of the drive, in which case the operating cleaning rake is moveable along at least one partial section of the front side of the separation surface in order to remove the held-back sieved material and transport it towards a discharge opening, and in which case the cleaning rake can be moved along a back side of the ...

Water treatment system

A treatment system for removing a plurality of pollutants from wastewater includes a removal device for removing a plurality of gross solids from the wastewater, an aeration device for reducing a biochemical oxygen demand (BOD) and a chemical oxygen demand (COD) of the wastewater and a bioreactor containing a bacterial biofilm, said bioreactor including a plurality of cells configured for operation on a predetermined drain fill cycle.

Sludge screw thickener with screen rotation during cleaning

A screw press has a cylindrical screening section mounted to a frame. The screening section is able to rotate but can be prevented from rotating. A sprayer system is operable to spray water on the screening section. In a cleaning process, the screening section is rotated while water is sprayed against it. Optionally, the power required to rotate the screen may be provided by an auger drive mechanism. The screening section may have openings sized to retain flocculated solids. The screw press may be used to thicken a sludge from a waste water treatment plant.

DEWATERING SYSTEM

A system for processing drilling mud, the system including a primary separation tank having an inlet for receiving drilling waste and an outlet in fluid communication with a feed line, and an injection pump in fluid communication with a polymer tank and the feed line. The system also includes a clarifying tank in fluid communication with the feed line and a first collection tank, wherein effluent from the clarifying tank is discharged into the first collection tank, and a centrifuge in fluid communication with the clarifying tank and a second collection tank, wherein effluent from the centrifuge is discharged into the second collection tank. 1. A system comprising:a primary separation tank having an inlet for receiving drilling waste and an outlet in fluid communication with a feed line;an injection pump in fluid communication with a polymer tank and the feed line;a clarifying tank in fluid communication with the feed line and a first collection tank, wherein effluent from the clarifying tank is discharged into the first collection tank; anda centrifuge in fluid communication with the clarifying tank and a second collection tank, wherein effluent from the centrifuge is discharged into the second collection tank.2. The system of claim 1 , wherein the primary separation tank comprises a sand trap.3. The system of claim 1 , further comprising:a primary separation device in fluid communication with the primary separation tank.4. The system of claim 3 , wherein the primary separation device comprises a vibratory separator.5. The system of claim 1 , further comprising a centrifuge pump in fluid communication with the clarifying tank and configured to provide fine particulates from the clarifying tank to the centrifuge.6. The system of claim 1 , wherein the polymer tank comprises a dual tank.7. The system of claim 1 , wherein the first collection tank comprises a back flow line in fluid communication with the primary separation tank.8. The system of claim 1 , wherein the ...

Ash processing and metals recovery systems and methods

Methods and systems for incineration ash such as ash from municipal waste incineration plants, purification and recovery of materials and metals. Increased levels of aggregate and metals recovery and purification are achieved and production of residual ash with less environmental contaminants.

Wastewater treatment process with anaerobic mbbr

In a wastewater treatment system, feed water is processed by anaerobic digestion, preferably in an anaerobic moving bed bioreactor (AnMBBR). Effluent from the AnMBBR passes through one or more solid-liquid separation units. A solids portions is treated by hydrolysis or suspended growth anaerobic digestion. A liquid portion of the hydrolysis or suspended growth anaerobic digestion effluent is returned to the AnMBBR or blended with effluent from the AnMBBR. The AnMBBR effluent may be treated with an aerobic moving bed bioreactor (MBBR) before the one or more solid-liquid separation steps. Membrane filtration may provide a first solid-liquid separation step. A thickened waste stream may be withdrawn from a recirculation loop flowing from the first solid-liquid separation unit to the MBBR. Optionally, a solids portion separated from the feed water upstream of the AnMBBR may also be treated by hydrolysis or suspended growth anaerobic digestion.

APPARATUS AND METHOD FOR THE TREATMENT OF BIOSOLIDS

Biosolids in the nature of sewage sludge is processed in a controlled environment to produce a dried sludge product of relatively high dry solid content with the elimination of or reduced levels of pathogens. The water containing sewage sludge is dried while cascading within a processing chamber using heated air at a temperature below the ignition or smoldering temperature of the sewage sludge to prevent the formation of embers. The sewage sludge before discharge is retained within the processing chamber for a sufficient time and temperature as mandated by the Environment Protection Agency rules and guidelines. 1. An apparatus for the treatment of sewage sludge , comprising:a housing having a sidewall forming a processing chamber;a plurality of vertically spaced apart supports for receiving sewage sludge cascading through the processing chamber;a source of heated gas in communication with the processing chamber for treatment of the sewage sludge cascading through the processing chambers; anda manifold coupled to the sidewall for supplying the heated gas to a plurality of locations within the processing chamber, the manifold including an elongated opening configured for discharging the heated gas into the processing chamber and at least one barrier partially obstructing the discharging of the heated gas from the opening into the processing chamber.2. The apparatus of claim 1 , further including a controller for controlling the temperature of the heated gas below the ignition or smoldering temperature of the sewage sludge.3. The apparatus of claim 1 , wherein the processing chamber includes an outlet for exiting exhaust gases from within the processing chamber; and a recycle duct for recycling at least a portion of the exhaust gases into the processing chamber.4. The apparatus of claim 3 , wherein the elongated opening is configured to discharge the heated gas into the processing chamber in a direction substantially parallel to the sidewall.5. The apparatus of claim 1 ...

APPARATUS AND METHOD FOR THE TREATMENT OF BIOSOLIDS

Biosolids in the nature of sewage sludge is processed in a controlled environment to produce a dried sludge product of relatively high dry solid content with the elimination of or reduced levels of pathogens. The water containing sewage sludge is dried while cascading within a processing chamber using heated air at a temperature below the ignition or smoldering temperature of the sewage sludge to prevent the formation of embers. The sewage sludge before discharge is retained within the processing chamber for a sufficient time and temperature as mandated by the Environment Protection Agency rules and guidelines. 1. A method for treatment of sewage sludge containing a pathogen , comprising:cascading sewage sludge containing water and at least one pathogen between a plurality of vertically spaced apart supports within a processing chamber;heating the sewage sludge while cascading within the processing chamber to remove a portion of the water within the sewage sludge thereby forming a reduced water content sewage sludge;heating the reduced water content sewage sludge for a sufficient time and at a sufficient temperature to reduce the amount of the at least one pathogen within the sewage sludge thereby forming a treated sewage sludge;supplying heated gas to the processing chamber for heating the sewage sludge for removing a portion of the contained water therein and for reducing the amount of the at least one pathogen with the sewage sludge; andcontrolling the temperature of the heated gas within the processing chamber below the ignition temperature of the sewage sludge to prevent the formation of embers therefrom.2. The method of claim 1 , wherein the treated sewage sludge has a dry solid content of at least 90% by weight.3. The method of claim 1 , wherein heating the sewage sludge for a sufficient time and at a sufficient temperature to reduce the amount of the at least one pathogen comprises heating the sewage sludge of reduced water content to a temperature in the ...

Floating Wicks For Slurry Consolidation

Systems and methods for remediating an initially liquid-like slurry pond include distributing one or more floating wicks into the slurry pond, wherein the slurry pond includes a slurry with a supernatant level above the slurry. A method also includes placing a load on the slurry, wherein the load causes an effective stress on the slurry and aids in dewatering the slurry. 1. A method for remediating a slurry pond , comprising:distributing one or more wicks into the slurry pond wherein the one or more wicks buoyantly float in the slurry at least partially below a level of a supernatant.2. The method of claim 1 , wherein the slurry has an initial shear strength of less than 200 Pa.3. The method of claim 1 , further comprising placing a load on the slurry.4. The method of claim 3 , wherein the load is placed on the slurry after one or more wicks are distributed into the slurry pond.5. The method of claim 1 , wherein at least a portion of the one or more wicks sinks within the slurry to a depth of at least one meter.6. The method of claim 3 , further comprising placing a geofabric on the slurry wherein the geofabric is positioned above the one or more wicks and below the load.7. The method of claim 6 , wherein the one or more wicks are attached to the geofabric.8. The method of claim 4 , wherein placing the load on the slurry comprises distributing sand on top of the slurry.9. The method of claim 1 , wherein distributing the one or more wicks into the slurry pond comprises using a floating or flying vessel to distribute the one or more wicks.10. The method of claim 1 , comprising using a mechanism to control a flotation of the one or more wicks so that one end of the one or more wicks floats near an interface between the layer of slurry and the level of supernatant claim 1 , wherein the mechanism comprises a diaphragm claim 1 , weights claim 1 , weighted buoys claim 1 , floats claim 1 , or a selection of a density of the material of the one or more wicks claim 1 , or any ...

METHOD FOR THE SEPARATION OF LITTER FROM LIQUID MANURE

A method of separating litter from liquid manure includes feeding liquid manure to a separator and squeezing particulate material from the liquid manure with the separator at a separating rate. The method also includes feeding the material to a litter reclamation plant, heating the particulate material within the litter reclamation plant from an entry temperature to a target temperature, and maintaining the particulate material above the target temperature for a duration of time. The method further includes measuring the entry temperature for a predetermined measuring interval and adjusting the separating rate if the entry temperature increases or decreases within the measuring interval. 1. A method of separating litter from liquid manure , the method comprising:feeding liquid manure to a separator;squeezing particulate material from the liquid manure with the separator at a separating rate;feeding the particulate material to a litter reclamation plant;heating the particulate material within the litter reclamation plant from an entry temperature to a target temperature;maintaining the particulate material above the target temperature for a duration of time;measuring the entry temperature for a predetermined measuring interval; andadjusting the separating rate if the entry temperature increases or decreases within the measuring interval.2. The method of claim 1 , wherein adjusting the separating rate includes increasing the separating rate if the entry temperature increases within the measuring interval and decreasing the separating rate if the entry temperature decreases within the measuring internal.3. The method of claim 1 , wherein the duration of time is at least one hour.4. The method of claim 1 , wherein the separator squeezes the particulate material by means of a screw drive.5. The method of claim 4 , further comprising controlling a torque of the screw drive to adjust a dry matter content of the particulate material.6. The method of claim 4 , wherein ...

Process for treating microfibrillated cellulose and microfibrillated cellulose treated according to the process

The present invention relates to a process for dewatering a slurry comprising microfibrillated cellulose wherein the process comprises the following steps of, providing a slurry comprising microfibrillated cellulose and liquid, subjecting the slurry to an electric field inducing the liquid of the slurry to flow and separating the liquid from the microfibrillated cellulose. The invention also relates to microfibrillated cellulose dewatered according to the process.

DEVICE FOR DRYING SEWAGE SLUDGE

A device for drying sewage sludge having a modular design composed of standard containers, the standard containers being disposed behind and optionally on top of one another. Slabs including heating lines are introduced on top of one another, in multiple levels, into the standard containers, serving as drying surfaces. Linear conveyors including deflections in a first and a last container distribute the sewage sludge across a width of the drying surfaces, turn and loosen the sewage sludge, and move this successively back and forth over the drying surfaces disposed on top of one another. 1. A device for drying sewage sludge , comprising at least one drying surface onto which the sewage sludge can be placed for drying , and comprising a linear conveyor , which comprises conveying elements that the linear conveyor moves in a longitudinal direction over the drying surface , wherein the device comprises modules , which are disposed behind one another in the longitudinal direction , the at least one drying surface continues through the modules , and the linear conveyor passes through the modules disposed behind one another.2. The device according to claim 1 , wherein the device comprises a plurality of drying surfaces which are disposed on top of one another and onto which the sewage sludge can be placed for drying claim 1 , the device comprises a respective revolving linear conveyor for two drying surfaces disposed on top of one another claim 1 , which comprises conveying elements that the linear conveyor moves in a longitudinal direction over the two drying surfaces disposed on top of one another and in opposite directions on the two drying surfaces claim 1 , the device comprises modules claim 1 , each of which comprises a plurality of drying surfaces disposed on top of one another claim 1 , the modules are disposed behind one another in the longitudinal direction claim 1 , the drying surfaces continue through the modules claim 1 , the linear conveyor passes through the ...

Remote submerged chain conveyor

A remote submerged chain conveyor system for separating particles from a coal ash/water slurry from one or more remotely located boiler units. A tank forms an ash holding section, a dewatering section, and an ash settling section. The ash holding section receiving the slurry with first and second opposite ends. The dewatering section dewaters the slurry. The settling zone is an elongated trough connected with the ash holding section at one end with a discharge drain trough at near an opposite end. The tank sections being oriented in a generally linear arrangement wherein a net flow of water from the ash/water slurry is in a direction from the settling zone toward the distal and. A drag chain moves along the ash settling conveying the particles settling from the slurry to the dewatering section.

System and Method for Drying and Milling Spent Grain into Flour

A process for converting spent grain into flour by drying and milling is disclosed. The process includes the steps of introducing a quantity of wet spent grain into a container for removing moisture by the action of gravity. After the gravity drying, the wet spent grain is transferred to a press to mechanically remove additional moisture. The wet spent grain is placed in a fluid bed processor where the grain additional moisture is removed through heating and fluidization. Some embodiments may include a dust collection system in connection with the fluid bed processor, wherein the dust collection system incorporates a separator for separating the grains. Once dried, the dry spent grain is introduced into a mill to be ground into the proper flour consistency. The resulting flour product can then be used for a variety of foodstuff applications. 1. A method for drying and milling spent grain , comprising:a) acquiring a quantity of spent grain from a brewer's mash tun;b) placing the quantity of spent grain into a food-safe gravity drainage container, the food-safe gravity drainage container being configured for removing a first volume of moisture from the spent grain by action of gravity;c) transferring the quantity of spent grain from the food-safe gravity drainage container into a mechanical press, the mechanical press being configured to mechanically remove a second volume of moisture from the spent grain;d) transferring the quantity of spent grain from the mechanical press to a thermal drying device, the thermal drying device employing heated air moving across the spent grain within the thermal drying device, the thermal drying device further employing vibration to fluidize the spent grain within the thermal drying device, wherein a combination of the heated air and vibration enables removal of a third volume of moisture from the spent grain;e) collecting the quantity of spent grain from the thermal drying device to a food-safe cooling container;f) exhausting, via a ...

Stacked type falling film evaporator, zero liquid discharge system comprising the same, and zero liquid discharging method using the same

A stacked type falling film evaporator includes a first evaporator, a second evaporator, a first vapor recovering device, a second vapor recovering device and a vapor recompressor. The first evaporator and the second evaporator respectively have evaporation tubes of a length of 5 m to 10 m, and are stacked in such a manner that wastewater passes through the first evaporator and the second evaporator in order. The first vapor recovering device collects vapor generated from the wastewater in the first evaporator and supplies the collected vapor to the second evaporator. The second vapor recovering device collects vapor generated from the wastewater in the second evaporator and supplies the collected vapor to the first evaporator. The vapor recompressor compresses the vapor collected in the second vapor recovering device before the vapor is supplied to the first evaporator.

TWO STAGE PYROLYSIS OF ORGANIC WASTE

Organic waste is treated by pyrolysis or by anaerobic digestion followed by pyrolysis of the digestate. The pyrolysis is performed in two staged reactors. The second stage reactor treats char produced in the first stage. The temperature of the first stage reactor is preferably 450 degrees C. or less. The temperature of the second stage reactor is higher than the temperature of the first stage, for example by 50 degrees C. or more. Optionally, there may be a char cooler, a water sprayer, or both downstream of the char outlet of the second reactor. In an exemplary system, a digestate outlet is connected to the inlet of the first pyrolysis reactor. A pyrolysis liquid outlet of the first pyrolysis reactor is connected to the digester. Char produced in the second pyrolysis reactor may be used as a soil amendment. 1. A process for treating organic waste comprising steps of ,pyrolysing the organic waste in a first stage and producing at least a first char; and,pyrolysing the first char in a second stage and producing a second char.2. The process of wherein the temperature in the second stage is higher than the temperature of the first stage by 50 degrees C. or more.3. The process of wherein the temperature of the first stage is 450 degrees C. or less4. The process of wherein the first stage produces a liquid and the further comprises treating at least a portion of the liquid in an anaerobic digester.5. The process of further comprising separating an oily fraction from the liquid.6. The process of further comprising burning or pyrolysing the oily fraction.7. The process of wherein the organic waste comprises digestate.8. The process of further comprising cooling the second char.9. The process of further comprising spraying water on the second char.10. The process of further comprising adding gas produced in the first stage or the second stage or both to sludge in an anaerobic digester or burning the gas to produce heat for pyrolysis or drying digestate.11. The process of ...

Method and Apparatus for the Treatment of Waste from Sewage Digestor

Disclosed are methods and machines for removing volatile compounds from sludge. Additionally, disclosed are methods and machines for removing pathogens from sludge. 1. An apparatus for removing volatile compounds from sludge comprising:a first shaft rotating clockwise;a second shaft rotating counterclockwise, 'wherein the multitude of paddles are attached to the first and second shaft with a clamp, the multitude of paddles have an adjustable pitch, and the clamps and the multitude of paddles are rotationally offset along the first and second shafts in a helical pattern around the first and second shafts, such that the rotational offset of each clamp and paddle is less than 60 degrees from the preceding clamp and paddle, and the clamps and multitude of paddles spiral around the first and second shafts at least twice;', 'a multitude of paddles attached to the first and second shafts,'}a first heating element;a U-shaped heated trough; anda hot air blower.2. The apparatus of claim 1 , wherein the first and second shafts are independently rotated with a ratchet drive.3. The apparatus of claim 2 , wherein the ratchet drive is rotated with a hydraulic cylinder.4. The apparatus of claim 3 , wherein the shafts are hollow.5. The apparatus of claim 4 , wherein the shafts further comprises a second heating element.6. The apparatus of claim 2 , wherein the duct further comprises an exhaust fan to remove volatile compounds as they are removed from the sludge.7. The apparatus of claim 2 , wherein the first heating element is an electric heating element.8. A method for removing volatile compounds comprising:loading sludge into an apparatus;mixing the sludge with at least two rotating shafts,wherein each rotating shafts has a multitude of paddles;heating the sludge using at least one heating element;removing any volatile compounds using a duct attached to the apparatus.9. The method of claim 8 , wherein each shaft is independently rotated with a ratchet drive.10. The method of claim ...

METHOD AND APPARATUS FOR PROCESSING MAGNETITE

A method of dewatering magnetite to <10% w/w moisture content, including the step of extracting water from the magnetite by virtue of the magnetism of the magnetite, whereby the magnetite pulls together under magnetic attraction thereby squeezing water outwardly and away from the magnetite. 1. A method of dewatering magnetite to <10% w/w moisture content , comprising: the step of extracting water from the magnetite by virtue of the magnetism of the magnetite , whereby the magnetite pulls together under magnetic attraction thereby squeezing water outwardly and away from the magnetite.2. The method of claim 1 , further comprising the step of using a magnetic drum to cause the magnetite to compress itself toward the drum claim 1 , thereby expelling water from the magnetite.3. The method of claim 2 , wherein the drum is arranged such that the magnetite material peels away from the magnetic drum under gravitational force after expelling water.4. The method of claim 3 , wherein the magnetite is fed along a belt filter which allows water to drop downwardly from the magnetite and through the belt filter.5. The method of claim 3 , wherein the belt filter is a vibrating belt filter.6. An apparatus for dewatering magnetite claim 3 , comprising: a magnetic drum arranged to cause the magnetite to compress itself toward the drum claim 3 , thereby expelling water from the magnetite.7. The apparatus of claim 6 , further comprising a conveyor belt filter arranged such that magnetite conveyed along an upper surface of the belt filter will compress itself downwardly under magnetic attraction within the magnetite such that water is expelled from the magnetite and drains through the conveyor belt filter.8. The apparatus of claim 7 , further comprising a vibrator for vibrating the conveyor belt filter.9. The apparatus for dewatering magnetite of claim 5 , wherein the apparatus is configured to achieve a target moisture content of less than or equal to 10% w/w.10. A method of dewatering ...

Biosludge Reduction Method

A biosludge reduction method includes: fracturing a biosludge under oscillation of an aqueous solution to split zoogleal bacteria flocs contained in the biosludge so as to form a mixture containing the fractured biosludge and the aqueous solution; introducing an oxidizing agent gas into the mixture to bring the fractured biosludge in contact with the oxidizing agent gas; and reacting the mixture with the oxidizing agent gas so as to conduct lysis of the zoogleal bacteria.

METHODS FOR REDUCING GREENHOUSE EMISSIONS FROM ANIMAL MANURE

Greenhouse gases are lowered in treatment of animal manure from a CAFO by eliminating or reducing anaerobic digestion. The manure product is admixed with drying agents and is suitable for use as fertilizer or fuel while severely curtailing odor at the same time. 1. A method of decreasing emission of CO-equivalent greenhouse gases in a CAFO operation , comprising:substantially reducing anaerobic digestion of organic waste solids contained in a liquid from a CAFO and preserving organic nitrogen in the liquid in an anaerobic lagoon by increasing the pH of the liquid to above 9.0 or decreasing the pH of the liquid to below 5.5;concentrating undigested organic waste solids by dewatering; andneutralizing the concentrated undigested organic waste solids in a mixer, optionally with an addition of a drying agent, wherein the heat of the neutralization reaction and energy input of the mixer result in the formation of a dry admixture.2. The method of claim 1 , wherein the organic waste solids are contained in a sluice liquid containing manure and water claim 1 , and the step of increasing the pH or lowering the pH of the anaerobic lagoon occurs prior to entry of the sluice liquid into the anaerobic lagoon.3. The method of claim 1 , wherein the pH is adjusted by addition of HCl claim 1 , HSO claim 1 , waste pickle liquor claim 1 , gypsum claim 1 , limestone claim 1 , lime claim 1 , lime kiln dust claim 1 , cement kiln dust claim 1 , coal or wood combustion ash claim 1 , potash claim 1 , or soda ash.4. The method of claim 1 , further comprising capturing ammonia liberated during the addition of a drying agent to the organic waste solids.5. A method of preventing anaerobic decomposition of organic nitrogen of manure in an anaerobic lagoon claim 1 , the method comprising:adding an alkaline or acid component to a concentrated manure slurry prior to the slurry's entrance to the lagoon such that anaerobic biological decomposition of the organic nitrogen of the manure while in the ...

SOLIDS HANDLING IN WATER TREATMENT SYSTEMS AND ASSOCIATED METHODS

Apparatuses, systems, and methods related to water treatment are generally described. In particular, clarifiers that may improve solids thickening and related systems and methods are disclosed. 1. A clarifier for a water treatment system , the clarifier comprising:a separator region fluidically connected to an inlet of the clarifier and a first outlet of the clarifier; and a rotatable shaft,', 'protrusions extending outward from the rotatable shaft, and', 'a second outlet fluidically connected to the thickening region and positioned between a first section of the rotatable shaft and a second section of the rotatable shaft., 'a thickening region below the separator region, wherein the thickening region comprises2. A clarifier for a water treatment system , the clarifier comprising:a separator region fluidically connected to an inlet of the clarifier and a first outlet of the clarifier; and a rotatable shaft,', 'protrusions extending outward from the rotatable shaft, and', 'a second outlet fluidically connected to the thickening region and positioned in a central portion of a clarifier bottom., 'a thickening region below the separator region, wherein the thickening region comprises3. The clarifier of claim 1 , wherein the separator region is configured to produce a first product stream containing a lower concentration of suspended solids than an inlet stream of the clarifier.4. The clarifier of claim 1 , wherein the separator region comprises a plurality of inclined plates.5. The clarifier of claim 1 , wherein the separator region comprises a plurality of corrugated plates.6. The clarifier of claim 1 , wherein the separator region comprises tube settling media.7. The clarifier of claim 1 , wherein the protrusions are helical-shaped.8. The clarifier of claim 1 , wherein the protrusions comprise baffles.9. The clarifier of claim 1 , wherein the clarifier comprises a flat bottom.10. The clarifier of claim 1 , wherein the clarifier comprises a v-shaped bottom.11. The ...

Method for Making a Biosludge-Based Biomass Fuel

A method for making a biosludge-based biomass fuel includes: introducing an oxidizing agent gas and an aqueous solution into a biosludge to undergo lysis of bacteria contained in a biosludge under oscillation of the oxidizing agent gas and the aqueous solution so as to form a pre-treated biosludge mixture; filtering out the oxidized biosludge from the pre-treated biosludge mixture under pressurized treatment to form biosludge solids; drying the biosludge solids; grinding the dried biosludge solids to form particulate biosludge solids; and mixing the particulate biosludge solids with an oil sludge. 1. A method for making a biosludge-based biomass fuel , comprising:introducing an oxidizing agent gas and an aqueous solution into a biosludge to undergo lysis of bacteria contained in the biosludge under oscillation of the oxidizing agent gas and the aqueous solution so as to form a pre-treated biosludge mixture;filtering out the oxidized biosludge from the pre-treated biosludge mixture under pressurized treatment to form biosludge solids;drying the biosludge solids;grinding the dried biosludge solids to form particulate biosludge solids; andmixing the particulate biosludge solids with an oil sludge.2. The method for making a biosludge-based biomass fuel of claim 1 , wherein the oxidizing agent gas is ozone and the aqueous solution is water.3. The method for making a biosludge-based biomass fuel of claim 2 , wherein the ozone is introduced in an amount of 0.06 to 0.13 grams per 1 gram of dry weight of the biosludge.4. The method for making a biosludge-based biomass fuel of claim 1 , wherein the biosludge solids obtained from filtering of the pre-treated biosludge mixture has a water content ranging from 55% to 65%.5. The method for making a biosludge-based biomass fuel of claim 1 , wherein the dried biosludge solids have a water content less than 8%.6. The method for making a biosludge-based biomass fuel of claim 1 , wherein drying of the biosludge solids is conducted at ...

Reverse flow type multi-stage sedimentation rake-free thickening device

Disclosed is a reverse flow multi-stage sedimentation rake-free thickening device relating to the field of slime water treatment. The device includes a feed assembly, a guide assembly, and a clean coal collection assembly. The guide assembly also includes a central tank body and coal slurry flows from the upper part of the central tank body to the inner side wall of the central tank body through the feed assembly and the medicament, and then flows to the middle of the central tank body through the guide assembly. After the reaction, the bubbles carry the fine coal slime and move up to the clean coal collection assembly. The clean coal collection assembly is located above the outlet of the guide assembly, and the clean coal collection assembly is sequentially provided with a central collection area, a defoaming area, and a diversion settlement area from the middle to the outside.

Pivotal Dewatering Panels and Associated Supporting Framework

An array of spaced dewatering panels mounted in a spaced relationship in a framework (collectively referred to herein as a “panel support system” or “panel system”) is described wherein the panels are coupled to the framework in a manner that permits them to be pivoted or swiveled between at least a first orientation (or position) and a second orientation (position).

SLUDGE DEHYDRATOR

The “sludge dehydrator” equipment is a machine that permits to remove low turbidity water from sludge or watery pastes of industrial or mining origin, with the following objectives: 11502325241374434236655046366672681850. A machine preferably designed for application in mining works for dehydration of sludge or watery pastes , with the object to increase the recovery of the ore value metal and to minimize the use of water through recycling , and in other cases , for clarifying turbid water by separating the solid from the water for an adequate industrial benefit of both compounds in utilization or discard processes. With a view to perform these works , the machine is designed duly conditioned with components and parts being necessary to operate with a submerged filter system in the mixture of watery paste so that the required solid-liquid separation takes place , CHARACTERIZED in that the machine of the invention is a sludge dehydrator () made up by a rectangular tank () whose infrastructure and shape permits to lodge a modified sub merged filter consisting of a suction plate () for the solid-liquid separation and a cleaning car () to clean the sludge or sediment adhered to the filter cloth or membrane () thereby maintaining stable and operative the solid-liquid separation process. The suction plate () is connected to the vacuum system through the contact and support of the rounded edge () of the female connector () of the suction pipe () and the sponge seal () inserted in the seal channel () of the suction nozzle (). Through the flanged hatch or opening () of the rectangular tank () the suction pipes () connect the outside by means of its distribution tray () which encloses it from the outside by the collector lid () having adhered the conduit section () that receives the clarified water by suction plates () and through the terminal () it connects the suction line () that discharges the clarified water being suctioned by a vacuum pump , a diaphragm force pump of ...

METHOD AND ARRANGEMENT FOR DEWATERING SLUDGE

A method and an arrangement for processing sludge into sludge residue having a targeted dry solid concentration is provided. The method comprises a step of distributing () provided sludge for continuous transport in a specific form factor; cooling () the distributed sludge into a frozen state using a refrigerating medium; thawing () the frozen sludge using a first heating medium; drying () the thawed sludge to a targeted dry solid concentration, wherein at least one aspect of the method is controlled by a processing parameter, the method further comprising the step of monitoring () at least one processing parameter, and adjusting () at least one processing parameter with respect to a corresponding reference value based on said at least one sludge characteristic or user input to improve sludge processing. 1. Method for processing sludge to increase its dry solid concentration wherein the provided sludge is characterized in terms of at least one sludge characteristic , the method comprising the steps of:distributing provided sludge for continuous transport in a specific form factor;cooling the distributed sludge into a frozen state using a refrigerating medium;thawing the frozen sludge using a first heating medium;drying the thawed sludge to a targeted dry solid concentration using a second heating medium,wherein at least one aspect of the method is controlled by a processing parameter, wherein the distributed sludge is continuously transported at a transport speed during at least one of the steps relating to distributing, cooling, thawing, and drying, the method further comprising the step ofmonitoring at least one processing parameter, andadjusting at least one processing parameter with respect to a corresponding reference value based on said at least one sludge characteristic or user input to improve sludge processing.2. Method according to claim 1 , wherein the at least one processing parameter controls any of the following aspects:a) the form factor of the ...

BOTTOM-DRYING SLUDGE DRYING DEVICE AND METHOD

The present disclosure provides a bottom drying type sludge drying device, comprising: a housing in which a curved-face partition is provided for separating space in the housing into first and second drying chambers; a feed gate and an outlet provided on an upper portion of the first drying chamber, and a discharge gate provided on the circumferential wall of the first drying chamber. An inlet is provided on a side wall or bottom of the second drying chamber. The curved-face partition comprises a depressed area in which a communication opening is formed, and a bridge-shaped element is provided above the communication opening, forming a lateral aperture between the bridge-shaped element and the partition. A sludge stirring assembly is provided in the first drying chamber, which comprises a rotary shaft and a stirring unit fixed on the rotary shaft, and the stirring unit is configured to cut, break and stir the sludge and/or that a front end thereof faces and is close to the lateral aperture, such that the front end scrapes the sludge in or at the communication opening as the stirring unit rotates. The present disclosure further provides a method of drying sludge using a sludge drying device. 1. A bottom drying type sludge drying device comprising:a housing provided with a partition having a curved face for separating a space in the housing into at least one first drying chamber and at least one second drying chamber;a feed gate for the sludge to be dried and an outlet for the drying gas that has dried the sludge provided in an upper portion of the at least one first drying chamber, respectively, and a discharge gate for the dried sludge provided in the circumferential wall of the at least one first drying chamber;at least one inlet for the drying gas for the sludge to be dried provided in a side wall or bottom of the at least one second drying chamber;the partition having at least one depressed area, wherein at least one communication opening is shaped at the ...

ORGANIC-WASTE-PROCESSING APPARATUS, PROCESSING METHOD, AND CONTROL APPARATUS

An organic-waste-processing apparatus reducing a moisture of, and conducting a thermal operation process to, an organic waste, includes: a moisture-reducing unit; a combustion unit; a combustion-energy-supply unit; an energy-supply-operation controller; an organic-waste-energy-estimating unit; a total-energy-consumption measuring unit; a relation-maintaining unit; a quantitative-relationship-grasping unit; and a moisture reduction controller. The moisture reduction controller controls an operation of the moisture-reducing unit so that the estimated value of the organic waste energy to be estimated by the organic-waste-energy-estimating unit is directed in a direction reducing a quantitative difference from the optimum value of the organic waste energy based on the quantitative relationship grasped by the quantitative-relationship-grasping unit between the optimum value of the organic waste energy and the latest estimated value of the organic waste energy. 1. An organic-waste-processing apparatus reducing a moisture of , and conducting a thermal operation process to , an organic waste , comprising:a moisture-reducing unit reducing the moisture of the organic waste;a combustion unit combusting and reducing a weight of the organic waste moisture-reduced by the moisture-reducing unit by using a combustion energy;a combustion-energy-supply unit supplying the combustion energy, which is other than a combustion energy residing in the organic waste, into the combustion unit;an energy-supply-operation controller controlling an operation of the combustion-energy-supply unit so that an inside the combustion unit is maintained at a predetermined temperature at a supply amount of the combustion energy;an organic-waste-energy-estimating unit estimating an organic waste energy as the combustion energy residing in the organic waste based on a supply amount of the combustion energy as a result of a control by the energy-supply-operation controller;a total-energy-consumption ...

CAPACITATIVE ELECTROKINETIC DEWATERING OF SUSPENSIONS

Capacitive electrokinetic densification, decontamination and dewatering of suspensions and soils can be performed while controlling and/or preventing chemical and pH changes in the densified material and extracted water. High electrical capacitance electrodes or Electric Double Layer Capacitor (EDLC) electrodes are used which can operate without redox reactions occurring on their surfaces until their developed voltage reaches the standard electrode potential of the electrode. Water-retaining, flexible covers for the EDLC electrodes have drainage and filtering capabilities and are made of a fabric which allows the passage of ions, water and electricity therethrough and facilitate continuous electrical contact between the EDLC electrode and the surrounding suspension. 1. A capacitive electrokinetic process for densifying solids and recovering water from colloidal suspensions without changes in chemical composition and pH of the densified material and the extracted water , the process comprising the steps of:a) providing an insulated container, the insulated container including at least one outlet drain line for removing water therefrom;b) providing an electric current power supply for generating an electric field through the suspension, wherein the power supply includes a positive pole and a negative pole and is capable of polarity reversal;c) providing at least one pair of high capacitance electric double-layer capacitor (EDLC) electrodes connected to opposite poles of the power supply, wherein each electrode of the at least one pair of EDLC electrodes has a specific capacitance of at least 1.0 farad per gram and is spaced apart from the other electrode within the insulated container;d) providing each EDLC electrode with an electrode cover for placement over the EDLC electrode, wherein each electrode cover is made of a fabric which allows the passage of ions, water and electricity therethrough and facilitates electrical contact between the EDLC electrode and the ...

Systems and methods for dewatering a slurry that includes lignocellulosic biomass and liquid

The present disclosure relates to a dewatering systems, and related methods, that are adapted to convey lignocellulosic biomass to separate at least a portion of the water from a lignocellulosic biomass slurry and accumulate the dewatered lignocellulosic biomass. The dewatering system also includes a headspace occupied by a gas that is at a pressure that facilitates transferring the accumulated biomas into a pretreatment reactor having a pressurized headspace. Such a dewatering system can prevent undue mixing and backflow of gas (e.g., steam) from the pretreatment reactor.

Elongated Scraper Profile

The invention relates to an elongated scraper profile ( 1 ), preferably for a dewatering device ( 2 ) that serves the purpose of dewatering sludge ( 3 ), whereas the scraper profile ( 1 ) features a lip section ( 4 ) extending in the direction of the longitudinal extension (L) of the scraper profile ( 1 ), which, for example in a state installed in the dewatering device ( 2 ), serves the purpose of scraping sludge components from a screen surface ( 5 ), and whereas the scraper profile ( 1 ) features a fastening section ( 6 ) extending in the direction of the specified longitudinal extension (L), which serves the purpose of fixing the scraper profile ( 1 ) with the assistance of a retainer assembly ( 7 ). In accordance with the invention, it is proposed that the scraper profile ( 1 ) also features an intermediate section ( 8 ) connecting the lip section ( 4 ) and the fastening section ( 6 ), whereas the intermediate section ( 8 ) is flexibly formed in a direction running perpendicular to the longitudinal extension (L), such that the lip section ( 4 ) is moveable in the direction of the fastening section ( 6 ). In addition, a dewatering device ( 2 ) with at least one corresponding scraper profile ( 1 ) is described.

AN IMPROVED APPARATUS FOR COMPACTING AND DEHYDRATING ORGANIC WASTE AND/OR ALIMENTARY WASTE

An improved apparatus for compacting and dehydrating organic waste and/or alimentary waste, comprises: an opening for loading/introducing the organic material and/or the alimentary waste into the apparatus itself; mechanical means for compacting and dehydrating the organic material and/or alimentary waste, comprising a central compacting body, designed to separate the material to be treated from the liquid fraction contained therein; means for collecting and discharging the liquid fraction coming from the treated material; and a drawer, set underneath the central compacting body, for collecting the alimentary waste compacted and dehydrated via the central body and the non-compactable waste that may be introduced manually directly into the drawer. 1. An improved apparatus for compacting and dehydrating organic waste and/or alimentary waste , characterized in that it comprises , in combination:an opening (I) for loading/introducing the organic material and/or the alimentary waste into the apparatus itself;mechanical means for compacting and dehydrating said organic material and/or alimentary waste, comprising a central compacting body (CC), designed to separate the material to be treated from the liquid fraction contained therein;means for collecting and discharging the liquid fraction coming from the treated material; anda drawer (CA), set underneath said central compacting body (CC), for collecting the alimentary waste compacted and dehydrated via said central body (CC) and the non-compactable waste that can be introduced manually directly into said drawer (CA),wherein said mechanical means for compacting and dehydrating said organic material and/or alimentary waste are basically made up of an auger (CO) designed to feed and simultaneously compress and dehydrate the organic material introduced by the user into said central body (CC) via the loading opening (I);{'b': '50', 'and wherein said auger (CO) compress and dehydrate said organic material reducing the volume ...

METHOD AND SYSTEM FOR CLEANING OILY WASTE

A method for cleaning oily waste including water, solids and at least one fuel oil includes removing water from the oily waste to be cleaned so as to produce dried oily waste; introducing dried oily waste into a two-phase centrifugal separator through a liquid inlet; separating the dried oily waste in the two-phase centrifugal separator into a cleaned oil phase and a sludge phase; discharging the sludge phase through a sludge outlet of the two-phase centrifugal separator, and discharging the cleaned oil phase through a liquid outlet of the two-phase centrifugal separator. A system for cleaning oily waste including water, solids and at least one fuel oil is also disclosed. 1. A method for cleaning oily waste comprising water , solids and at least one fuel oil , wherein the method comprises the steps of:providing oily waste to be cleaned, said provided oily waste to be cleaned comprising water, solids and at least one fuel oil;removing water from said provided oily waste to be cleaned so as to produce dried oily waste;introducing the dried oily waste produced in said step of removing water into a two-phase centrifugal separator through a liquid inlet;separating said dried oily waste in said two-phase centrifugal separator into a cleaned oil phase and a sludge phase comprising solids from said dried oily waste;discharging said sludge phase through a sludge outlet of said two-phase centrifugal separator, anddischarging said cleaned oil phase through a liquid outlet of said two-phase centrifugal separator.2. The method according to claim 1 , wherein said at least one fuel oil constitutes at least 80 wt % of all oil of said provided oily waste to be cleaned.3. The method according to claim 1 , wherein said provided oily waste to be cleaned comprises a single oil claim 1 , said single oil being a fuel oil.4. The method according to claim 1 , wherein said two-phase centrifugal separator comprises a screw conveyor and a stack of separation discs and wherein said step of ...

ROTATIONAL FLOW ROTATION DEOILING METHOD AND DEVICE FOR OIL-BASED MUD ROCK DEBRIS

Disclosed is a rotational flow rotation deoiling method for oil-based mud rock debris. The method comprises the following steps: (1) System viscosity control, wherein by means of heat exchange between a gas medium and the rock debris, the viscosity of the oil-based mud debris is reduced to reduce the interaction force between oil, water, and the surface and channels of solid particles, thereby facilitating the separation in a rotational flow field; (2) Rotational flow rotation deoiling, wherein the oil-based mud rock debris particles undergo a coupled motion of rotation and revolution, wherein by means of the rotation of the rock debris particles, the centrifugal desorption of oil on the surface of a solid phase, oil in capillaries and oil in pores is enhanced; and by means of the centrifugal force of periodic oscillation generated by the revolution thereof, the separation and enrichment of oil and gas and the solid phase are completed, thereby achieving the removal of the oil phase from the pore channels of the rock debris; and (3) gas-liquid separation and reuse, wherein an oil-containing mixture produced in step (2) is subjected to gas-liquid separation so as to realize the reuse of a base oil, circulation of the gas medium, and a harmless treatment of the rock debris; and a rotational flow rotation deoiling device for oil-based mud rock debris is further comprised. 1. A method for deoiling of oil-based mud cuttings by cyclone rotation , comprising the following steps:(1) Control of system viscosity: reducing viscosity of oil-based mud cuttings by heat exchange between a gas medium and the cuttings to reduce interaction force of oil and water with solid particle surfaces and pores, thereby facilitating separation in a cyclone field;(2) Cyclone rotation deoiling: among a coupled motion of rotation and revolution of oil-based mud cuttings particles in the cyclone field, using the rotation of the cuttings particles to promote centrifugal desorption of solid surface ...

DEWATERING SYSTEMS AND METHODS

A dewatering system for removing solids from an influent includes a filtration assembly and a feed pipe upstream thereof. The dewatering system includes a solids receptacle downstream of the filtration assembly, and an effluent collector adjacent to the filtration assembly and in fluid communication with the filtration assembly. The dewatering system includes a sensor to sense a characteristic of an influent, an effluent and/or a solid. A control system is operatively connected to the sensor to receive a sensor signal therefrom and to generate an adjustment signal based on the sensor signal to improve the efficiency of the dewatering system. 1. A dewatering system for removing solids from an influent comprising:a filtration assembly;a feed pipe upstream from the filtration assembly;a solids receptacle downstream of the filtration assembly;an effluent collector adjacent to the filtration assembly in fluid communication with the filtration assembly;a sensor configured to sense a characteristic of at least one of an influent, an effluent or a solid; anda control system operatively connected to the sensor to receive a sensor signal therefrom and to generate an adjustment signal based on the sensor signal to improve the efficiency of the dewatering system.2. The system as recited in claim 1 , wherein the sensor is operatively connected to a conduit upstream from the filtration assembly and downstream from the feed pipe claim 1 , and wherein the sensor is a light sensor used to measure at least one of an amount of suspended solids in an influent claim 1 , a degree of homogeneity in an influent claim 1 , a degree of flocculation of solids in an influent claim 1 , or a size of flocculated solid nodules in an influent.3. The system as recited in claim 1 , wherein the sensor is operatively connected to the feed pipe and measures at least one of a density claim 1 , an amount of suspended solids claim 1 , turbidity claim 1 , or a flow rate of an influent.4. The system as ...

UNIT FOR TREATING A DRILLING MUD AND CORRESPONDING METHOD

A drilling mud treatment unit () comprises a primary duct () for feeding coagulated drilling mud, an in-line flocculation system () for flocculating the coagulated drilling mud flowing in the primary duct (), and at least one hydrocyclone () fed by the primary duct () and arranged downstream from the flocculation system (). The hydrocyclone () has an overflow orifice () for receiving a liquid product resulting from treatment of the drilling mud and an underflow orifice () for receiving a solid product resulting from treatment of the drilling mud. The overflow orifice () presents an overflow diameter (Do) and the underflow orifice presents an underflow diameter (Du), and the underflow diameter (Du) is greater than 1.1 times the overflow diameter (Do). 1. A treatment method for treating drilling mud , the method comprising at least the following succession of steps:feeding a primary feed duct with coagulated drilling mud;flocculating the coagulated drilling mud in-line while it is flowing in the primary feed duct;introducing the coagulated and flocculated drilling mud into a hydrocyclone having an overflow orifice presenting an overflow diameter, and an underflow orifice presenting an underflow diameter, the underflow diameter being greater than the overflow diameter, with a ratio greater than 1.1 between the underflow diameter and the overflow diameter; anddischarging a solid product resulting from treatment of the drilling mud via the underflow orifice, and a liquid product resulting from treatment of the drilling mud via an overflow orifice.2. The treatment method according to claim 1 , wherein the step of flocculating the coagulated drilling mud includes feeding a flocculating agent through a secondary duct connected to the primary duct at a junction situated downstream from a pump of the primary feed duct.3. The treatment method according to claim 2 , wherein the step of flocculating the coagulated drilling mud further includes mixing the coagulating drilling mud ...

Method and device for treating liquid sludge and filter cakes obtained by said method

Treating and conditioning liquid sludge and a solidified sludge cake obtained thereby are disclosed. A first emulsion of sludge is formed in an in-line container fed at a first flow rate Q owing to the impact of the sludge with air injected into the container at a rate Q′, where Q′>5Q, in a first region which has a small volume of less than 0.05 m3. The first emulsion is then transferred into a second region of the container extending over a first length, and is then discharged via a component which generates a head loss in a chamber extending over a second length. A flocculant is injected in order to obtain a second coagulated emulsion, which is at least partially degasified. The matter in suspension in the second emulsion obtained in this way is then filtered or decanted.

PROCESS FOR THE ANAEROBIC FERMENTATION OF BIOGENIC WASTE MATERIALS AND PLANT FOR CARRYING OUT THIS PROCESS

A process for the anaerobic fermentation of biogenic waste materials including the steps that a fermentation material containing the waste materials is mixed with liquid and the fermentation material suspension obtained in this manner is anaerobically fermented in a fermenter and the digest produced in the fermentation of the fermentation material suspension is dewatered of a dewatering device, wherein, with separation of press water, a press cake is obtained that has a dry matter proportion increased with respect to the digest; the press water is subjected to a solids separation, wherein a residual liquid having a dry matter proportion reduced with respect to the press water of at most 15% by weight is obtained and the residual liquid is used at least in part for the mixing according to the fermentation material step. 1. A process for the anaerobic fermentation of biogenic waste materials comprising the steps thata) a fermentation material containing the waste materials is mixed with liquid and the fermentation material suspension obtained in this manner is anaerobically fermented in a fermenter andb) the digest produced in the fermentation of the fermentation material suspension is dewatered by means of a dewatering device, wherein, with separation of press water, a press cake having a dry matter proportion increased with respect to the digest is obtained,wherein the process comprises the additional steps thatc) the press water is subjected to a solids separation, wherein a residual liquid having a dry matter proportion reduced with respect to the press water of at most 15% by weight is obtained andd) the residual liquid is used at least in part for the mixing according to step a).2. The process as claimed in claim 1 , wherein it is carried out continuously or semi-continuously.3. The process as claimed in claim 1 , wherein the solids separation according to step c) is performed by means of filtration and/or by means of screening claim 1 , in particular using a ...

Apparatus and method for sewage sludge treatment and advanced sewage treatment

A sludge treatment apparatus includes an aeration tank serving to degrade microorganisms other than Bacillus sp. in sludge to produce organic matter to thereby activate Bacillus sp.; a poor aeration tank serving to reduce the activity of microorganisms in the sludge; a spore-forming tank operated under oxygen-free conditions and serving to induce the degradation and death of microorganisms remaining in the sludge while inducing the formation of spores of Bacillus sp.; a Bacillus sp.-activating reactor provided in an internal return line extending from the spore-forming tank to the aeration tank and serving to supply minerals to the sludge returned from the spore-forming tank to activate spore-type Bacillus sp.; and a sedimentation tank serving to induce the gravity sedimentation of the sludge discharged from the spore-forming tank to separate the discharged sludge into a supernatant and a concentrated sludge.

Dewatering box

A sludge dewatering tank that includes a first wall, a second wall, a third wall, a fourth wall and a bottom that cooperate to define a tank interior, a first interior wall and a second interior wall. The first interior wall cooperates with the first wall to define a first drainage compartment and includes at least a first filter member. The first drainage compartment includes at least a first drain that communicates the first drainage compartment with an exterior of the sludge dewatering tank. The second interior wall cooperates with the second wall to define a second drainage compartment and includes at least a second filter member. The second drainage compartment includes at least a second drain that communicates the second drainage compartment with the exterior of the sludge dewatering tank. The first interior wall cooperates with the second interior wall to define a sludge space therebetween.

Apparatus And Method For Waste And Water Treatment

An apparatus for recovering the suspended particles from waste water comprising a tank () having an upper section () for receiving waste water, a lower chamber () and a base plate () separating the upper section () and the lower chamber (). In one aspect the base plate is a filter screen that has a central opening () and a closure therefore. The apparatus has a filter press plate () within the upper section () and is moveable between a non-filtering position spaced away from the base plate () and a filtering position in which the filter member () and base plate () are pressed together so as to separate water from the particles and compress the particles to form a substantially dewatered product that can then pass through the opening () into the lower chamber () for collection. 138-. (cancelled)39. An assembly for settling suspended waste particles from waste water and recovering the waste particles as a substantially dewatered solid product , the apparatus comprising;a tank having an upper section for receiving waste water, a lower chamber and a base plate separating the upper section and the lower chamber, the base plate having an opening therein;a closure moveable between a position in which the base plate opening is closed and a position in which the base plate opening is open;a filter member within the upper section,wherein;the filter member and the base plate are moveable with respect to each other between a non-filtering position in which the filter member is spaced away from the base plate and a filtering position in which the filter member and base plate are pressed together with the closure in the closed position such that suspended waste particles are compressed between the filter member and the base plate to form a substantially dewatered solid product; andwhen the filter member is returned to the non-filtering position, the closure is moveable to the open position such that the substantially dewatered solid product can pass through the opening into the ...

System that provides economical purification of wastewater and recirculation of potable water and generation of electricity

Water purification and recycling system that generates electricity and has a large reservoir and a small reservoir that provides potable water to a water user structure. After use by the water user structure, wastewater is applied from said water user structure via at least one wastewater path to wastewater treatment apparatus. The wastewater treatment apparatus receives and processes the wastewater using a power plant that operates continuously to produce steam. The wastewater treatment apparatus is also powered by a co-adjuvant gas turbine generator is adapted to generate supplemental steam for the power plant.

METHOD AND DEVICE FOR TREATING WATER-CONTAINING SUBSTANCE

A method for treating a water-containing substance, including: mixing a water-containing substance with a solvent at a first temperature to obtain a mixture containing a solid substance and a liquid substance; conducting a first separation treatment of the mixture to obtain the solid substance and the liquid substance; and conducting a second separation treatment of the liquid substance obtained by the first separation treatment at a second temperature to obtain an aqueous phase and an organic phase, the organic phase contains the solvent. The mutual solubility of the solvent and water at the first temperature is higher than that of the solvent and water at the second temperature, so that the separation and recovery of water is achieved by liquid-liquid separation without phase transition in the method for treating a water-containing substance, so the energy consumption can be effectively reduced. The invention further relates to a corresponding device. 1. A method for treating a water-containing substance , comprising:mixing a first water-containing substance with a solvent at a first temperature to obtain a mixture containing a solid substance and a liquid substance, wherein the liquid substance contains the solvent and water;conducting a first separation treatment of the mixture to respectively obtain the solid substance and the liquid substance; andconducting a second separation treatment of the liquid substance at a second temperature to respectively obtain an aqueous phase and an organic phase, wherein the organic phase contains the solvent,wherein, mutual solubility of the solvent and water at the first temperature is higher than the mutual solubility of the solvent and water at the second temperature.2. The method according to claim 1 , wherein the solvent comprises alcohols claim 1 , phenols claim 1 , ethers claim 1 , amines claim 1 , ketones or any combination thereof.3. The method according to claim 1 , wherein the first temperature is in a range of from ...

QUANTITATIVE TANK BOTTOM SLUDGE VALVE

The present disclosure provides a quantitative tank bottom sludge valve. The extension and retraction of a cylinder drives a lower valve body, a valve rod, an upper valve body and respective accessories to move up and down, and sludge at the bottom of a water tank that is deposited to the upper part of an upper valve plate and the lower part of an upper valve body gasket is discharged quantitatively, thereby saving water and avoiding blockage; moreover, the quantitative tank bottom sludge valve has simple components in structure, and it is low in processing and assembly precision requirements, low cost, convenient to install and maintain, and suitable for mass production and use. 1. A quantitative tank bottom sludge valve , wherein comprising a cylinder , a lower valve plate , links , an upper valve plate , a sludge guide plate , an upper valve body , an upper valve body gasket , a gasket pressure plate , a valve rod , a gasket tapered pressure block , a lower valve body gasket , and a lower valve body;the cylinder is located below the lower valve plate, a barrel of the cylinder is fixed to the bottom surface of the lower valve plate, four links are vertically fixed on the upper surface of the lower valve plate, the lower ends of the four links are fixed to the upper surface of the lower valve plate and the upper ends are fixed to the bottom surface of the upper valve plate, and the upper valve plate is parallel to the lower valve plate; the four links pass through the sludge guide plate, and the sludge guide plate has a circular truncated tapered surface and is mounted on the four links;a piston rod of the cylinder sequentially passes through a first through hole in the middle of the lower valve plate and a second through hole in the middle of the sludge guide plate, and is vertically fixedly mounted to the lower valve body, the lower valve body gasket is disposed above the lower valve body, and the gasket tapered pressure block is disposed above the lower valve ...

FERMENTATION RESIDUE CONDITIONER AND METHOD FOR CONDITIONING FERMENTATION RESIDUES

Fermentation residue conditioner for conditioning aggregate materials consisting of fermentation residue, sludge, and/or organic residual masses with high water content, particularly of fermentation residues from the fermentation of household waste, bio-waste and/or base materials containing food residues, having a fermentation residue dropping point for introducing the aggregate material and a fermentation residue removal point for removing the aggregate material . The fermentation residue conditioner is designed such that the aggregate material is transportable through the fermentation residue conditioner during conditioning. The fermentation residue conditioner has a deposit surface for supporting the aggregate material from the underside, and which is designed such that the transport of the aggregate material can be effected by said deposit surface 11343531311. A fermentation residue conditioner () for conditioning aggregate materials () consisting of fermentation residue , sludge , and/or organic residual masses with high water content , particularly of fermentation residues from the fermentation of household waste , bio-waste and/or base materials containing food residues , with a fermentation residue dropping point () for introducing the aggregate material () and a fermentation residue removal point () for removing the aggregate material () , wherein the fermentation residue conditioner () is designed such that the aggregate material () is transportable through the fermentation residue conditioner () during conditioning , the fermentation residue conditioner () comprising:{'b': '11', 'a ventilation unit ();'}{'b': '12', 'a heating unit (); and'}{'b': 2', '3, 'a deposit surface () for supporting the aggregate material () from the underside,'}{'b': 2', '3', '2, 'wherein the deposit surface () is designed such that the transport of the aggregate material () can be effected by said deposit surface ().'}21215163. The fermentation residue conditioner () according ...

Column thickener and a process thereof for dewatering of iron ore slurry

The present invention is related to a high aspect ratio column thickener and a process thereof useful for dewatering of iron ore tailings. The column thickener has been developed with multiple feed inlet points and an auxiliary inlet point for water to clear the jam of high concentration slurry, if required. The column also consists of a conical portion at the bottom. Magnetic field has been applied using induced magnetic coil just above the conical portion of column thickener. Iron ore tailings slurry is fed into the column thickener and particles are allowed to settle in axial direction with and without the application of magnetic field.

HIGH RATE THICKENER AND EDUCTORS THEREFOR

A thickener for dewatering fluids having a vessel with a central well extending proximate a top portion of the vessel to a lower cone-shaped portion, a hindered settling zone, and a compressible sediment layer zone within the lower cone-shaped portion. Eductors housed in inlet wells have an inlet nozzle and a mixing tube to receive slurry to be treated and clear fluid to be mixed with the slurry. The fluid from the eductors is directed in counter circular paths via circular chambers situated proximate the inlet wells, such that fluid flowing in each direction collides and forms turbulence within the central well. Resultant fluid is directed into a lamella-type separator circumferentially located about a portion of the central well, having layered fluid paths directed radially outwards from said center longitudinal axis and upwards towards said vessel top portion through a conical, inclined fluid path, plate structure. The eductors are adjustable with a movable iris for limiting the amount of clear fluid exiting the eductor. 1. A thickener for dewatering fluids which contain a fraction of solids in the form of a slurry , said thickener comprising:a vessel having a top portion and a center longitudinal axis, a central well extending proximate said top portion to a lower cone-shaped portion of said vessel, said central well centered about said center longitudinal axis;a hindered settling zone and a compressible sediment layer zone within said lower cone-shaped portion;at least two inlet wells for fluid ingress into said central well;an eductor housed in each of said at least two inlet wells, said eductor including an inlet nozzle and a mixing tube, each of said eductors receiving ingress fluid to be treated from said inlet nozzle;said mixing tube fixedly attached to said inlet well, circumferentially housing said inlet nozzle, such that a first fluid traversing through said mixing tube is separated from said ingress fluid to be treated traversing through said inlet ...

SLUDGE DRYING APPARATUS

The inventive concept relates to a sludge drying apparatus, and more particularly to a sludge drying apparatus that may improve an efficiency of drying sludge that is sewage deposit residues and simplify a drying process. 1. A sludge drying apparatus comprising:a jacket having a long box shaped structure in which performance of a unidirectional feeding type drying process for sludge introduced into the jacket is allowed;an agitation screw configured to make a mixing state of components uniform by agitating the sludge contained in the jacket while being installed in the jacket along a lengthwise direction of the jacket and being revolved such that moisture contained in the sludge is dehydrated after the sludge is moved to one direction while being compressed at the same time;a heater configured to remove not only the moisture dehydrated by the agitation screw but also residual moisture left in the sludge according to a heat operation while surrounding side surfaces and a lower side of the jacket; anda driving device configured to transmit a rotation driving force to the agitation screw while being mounted on one side of the jacket.211. The sludge drying apparatus of claim 1 , wherein as a ‘U’-shaped cross-sectional structure is formed in the jacket claim 1 , an interior space for introducing and storing sludge and for installing the agitation screw is provided in the jacket and a plurality of crushing pins by repeatedly crushing the sludge that is fed by the agitation screw while being compressed are formed on opposite inner surfaces and a bottom surface of the interior space at a specific interval along a lengthwise direction of the jacket to protrude.3. The sludge drying apparatus of claim 1 , wherein the agitation screw includes a rotary shaft rotated at a specific RPM by the driving device while crossing the interior space of the jacket in a lengthwise direction of the jacket; and a blade formed by forming the shaft such that the shaft has a screw thread surface ...

CLARIFIER RAKE CONFIGURATION AND SYSTEM AND METHOD INCLUDING THE SAME FOR BOTTOM ASH HANDLING RELATED TO FLUE GAS DESULFURIZATION

A clarifier with an improved rake comprising a plurality of arms, wherein each arm of the rake including a series of arcuate blades, which each blade increasing in height and angle relative to the rake arm as radial distance of the blade relative to the center of the rake decreases. 1. A clarifier rake for processing sludge , comprising:a. a plurality of arms rotating about a center axis, each of the plurality of arms having a free distal end and a proximal end attached to the center axis;b. an array of blades on at least one of the plurality of arms for processing the sludge in a spiral path towards the center axis, wherein each array of blades comprises at least a first blade and a second blade, the first blade being closer than the second blade to the free distal end of the at least one of the plurality of arms, wherein the first blade has a more acute angle than the second blade, and the second blade has a larger height than the first blade.2. The clarifier rake of claim 1 , wherein each of the array of blades is arcuate.3. A clarifier rake for processing sludge claim 1 , comprising:a) a plurality of arms rotating about a center axis, each of the plurality of arms having a free distal end and a proximal end attached to the center axis;b) an array of arcuate blades on at least one of the plurality of arms for urging the sludge in a spiral path towards the center axis, wherein each array of blades comprises at least a first blade, a second blade and a third blade, the first blade being closer than the second blade or the third blade to the free distal end of the at least one of the plurality of arms, and the third blade being closer than the second blade or the first blade to the proximate end of the at least one of the plurality of arms, wherein the first blade has a more acute angle than the second blade, the second blade has a more acute angle than the third blade, the third blade has a larger height than the first blade, and the second blade has a larger ...

Biofilm carrier media in moving bed biofilm reactor processes

The invention pertains to a bio-carrier to carry a biofilm in a moving bed biofilm reactor (MBBR), the carrier being a particle comprising dehydrated sludge. The use of a bio-carrier in a MBBR process to purify a liquid from contaminants is disclosed and a method of manufacture of a bio-carrier is provided.

Method and Device for Dewatering Sludge on a Screen

The invention relates to a method for the dewatering of sludge on a screen, wherein a flocculant is admixed with sludge, whereafter the sludge is at least partially dewatered, the flow behaviour of the sludge on the screen being optically detected and the amount of flocculant to be admixed being set according to the free screen surface in a control region. The invention is primarily characterized in that the control region is arranged at a point of the cleaned screen in the inlet area of the sludge, for example at the edge. The invention also relates to a device for the dewatering of sludge, comprising a flocculant feed device and a screen downstream of the flocculant feed device, wherein a device, in particular a camera, is provided for optically detecting the flow behaviour of the sludge and is connected via a control system to the flocculant feed device for regulating the amount of flocculant, said device being characterized in that the device (), in particular the camera, is designed such that it detects a control region in the inlet area () of the cleaned screen. In this way, regulation can be achieved for an optimal feed amount of flocculant in a straightforward manner regardless of the material feed and the sludge type. 1. Method for dewatering sludge that passes through a machine feed region to a headbox and is then deposited at a sludge dewatering inflow region of the machine , onto a wire that has been cleaned by washing , thereby producing a distribution of sludge-covered and free surface areas on the wire in the inflow region , with the method further including adding a dosage of flocculant to the sludge before the sludge is deposited on said wire , and wherein the rheological properties of the sludge on the wire are scanned optically and the amount of flocculant to be added is set according to the free surface area of the wire in a control zone , wherein the improvement comprises that the control zone is established on the wire in the sludge dewatering ...

Method for treating a waste stream using a bioreactor and a membrane filter

Method for treating a fluid aqueous waste stream comprising a biodegradable organic substance, comprising—feeding said stream into a bioreactor containing a fluid which contains biomass;—reacting the biodegradable organic substance with the biomass in the bioreactor under essentially anaerobic conditions;—taking a first flow from the bioreactor and using the first flow as a feed to a membrane filtration unit, in which said feed is subjected to filtration, thereby forming a permeate stream and a retentate stream;—returning the retentate stream to the bioreactor;—taking a second flow from the bioreactor as feed to a sludge treatment unit, in which sludge treatment unit the second flow is separated into a third flow, having an increased organic substance content compared to the second flow, and a fourth flow, having a decreased organic substance content compared to the second flow.

Multiphase Separation and Pressure Letdown Method

A method and apparatus for the separation of gas and liquid-solid slurry under pressure, and passage of the liquid-solid slurry to an atmospheric discharge.

Multistage separation reaction tank and method for treating sewage sludge by using alkane-based solvent using same

The present invention relates to a multistage separation reaction tank for treating sewage sludge by forming a collection layer, a diffusion layer, a primary buffer layer, a secondary buffer layer, and an inorganic precipitate layer when treating an organic material by adding a liquid solvent having a specific gravity less than water to the sewage sludge. In addition, the present invention relates to a method for treating sewage sludge by using an alkane-based solvent, wherein the method significantly lowers the water content of the sewage sludge by using an alkane-based solvent which is in a liquid state and non-polar at atmospheric pressure and room temperature.

Solid-liquid separation device

In a solid-liquid separation apparatus, which comprises multiple movable members and screws that extend and pass through the movable members without contacting the movable members and which dehydrates sludge while conveying same by means of the rotation of the screws, to apply a wringing action on the sludge and increase sludge dehydration efficiency. (Solution) A first movable unit 41 is configured by linking multiple movable members 4 A and 4 B as a unit with a linking rod 44 , a second movable unit 41 A is configured by linking multiple other movable members 4 C and 4 D as a unit with a linking rod 44 A, and the movable members 4 A and 4 B of the first movable unit 41 and the movable members 4 C and 4 D of the second movable unit 41 A are reciprocated with a phase difference.

SYSTEM AND METHOD FOR SEPARATING SOLIDS FROM LIQUID-SOLID SLURRIES

A system for separating solids from a liquid-solid slurry includes a collection vessel configured to receive the liquid-solid slurry in first opening and discharge it through a second opening. There is a filter unit having a chamber with a plurality of apertures and a discharge port. There is a pump unit interconnected to the chamber of the at least one filter unit. One of the filter unit or the pump unit is in fluid communication with the second opening in the collection vessel and is configured to receive the liquid-solid slurry and it through the filter unit chamber, causing liquid from the liquid-solid slurry to flow through the apertures and the solids to be retained in the chamber of the filter unit. The pump unit includes a discharge device which is translatable through the chamber of the filter unit to force solids retained in the chamber toward the discharge port. 1. A system for separating solids from a liquid-solid slurry , comprising:A collection vessel having a first opening and at least one second opening positioned below the first opening, the collection vessel configured to receive the liquid-solid slurry through the first opening and to discharge the liquid-solid slurry through the at least one second opening;At least one filter unit having a chamber with a first end, a second end, and a filter surface between the first end and the second end of the chamber, the filter surface having a plurality of apertures, the second end of the chamber having a discharge port; andAt least one pump unit interconnected to the first end of the chamber of the at least one filter unit;Wherein one of the at least one filter unit or the at least one pump unit is in fluid communication with the at least one second opening in the collection vessel and is configured to receive the liquid-solid slurry from the at least one second opening and direct a flow of the liquid-solid slurry through the filter unit chamber, causing liquid from the liquid-solid slurry to flow through ...

SLURRY HANDLING APPARATUS

A slurry handling apparatus includes at least one reception hopper includes a base, a rear wall and opposing side walls, and an opening provided in the base. Slurry delivered into the reception hopper from a tanker can pass through the opening in the base, and a respective first dewatering screen having an apertured screening deck is located beneath the at least one reception hopper so that slurry passing through the opening is delivered onto the deck of the respective screen, with undersize material and water passing through the apertures of the deck to be received within a sump, and with oversize material passing over the deck to be discharged from a downstream end of the deck. 1. A slurry handling apparatus comprising at least one reception hopper comprising a base , a rear wall and opposing side walls , an opening being provided in said base , wherein slurry delivered into said reception hopper from a tanker can pass through said opening in said base , a respective first dewatering screen having an apertured screening deck being located beneath said at least one reception hopper whereby slurry passing through said opening is delivered onto said deck of said respective first screen , undersize material and water passing through said apertures of said deck to be received within a sump , oversize material passing over said deck to be discharged from a downstream end of said deck.2. A slurry handling apparatus as claimed in claim 1 , wherein spray bars are located over said deck of said respective first dewatering screen for washing material on said deck of said screen.3. A slurry handling apparatus as claimed in claim 1 , wherein said base of said at least one reception hopper is at the same height as an adjacent roadway whereby the tanker may reverse up the roadway to said reception hopper and discharge slurry from a storage tank thereof into said at least one reception hopper.4. A slurry handling apparatus as claimed in claim 3 , wherein a front portion of said ...

METHOD FOR ULTRA-DEHYDRATING THICKENED OR PASTY BIOMASS PRODUCTS, AND EQUIPMENT FOR IMPLEMENTING THE METHOD

The invention relates to a method for ultra-dehydrating thickened or pasty biomass products, in particular sludge from wastewater treatment plants, according to which the products, in particular products having a dryness of 4% to 25%, are subjected to the following steps: hydrothermal carbonisation treatment, including pressurization () and thermal conditioning () for a duration in a closed reactor (); followed by dehydration of the products by a ram press (), obtaining a dryness of more than 50%; the temperature of the product upstream from the ram press dehydration being regulated by cooling between 40° C. and 90° C., advantageously to around 70° C., in order to optimise the filterability in the piston press; the steps of the method being performed in a confined space making it possible to prevent the release of smells into the atmosphere. 1. A method for ultra-dehydrating thickened or pasty products , forming a biomass , wherein the products , in particular having a dryness of 4 to 25% , are subjected to the following steps:hydrothermal carbonization treatment, comprising a pressurization and a thermal conditioning for a residence time in a closed reactor, followed by a decompression,then dehydration of the products by a ram press, obtaining a dryness of greater than 50%,the temperature of the product upstream of the dehydration by the ram press being regulated by cooling between 40 and 90° C., advantageously at around 70° C., in order to optimize the filterability in the ram press,the steps of the method being carried out in a confined space that makes it possible to prevent the diffusion of odors into the atmosphere.2. The method as claimed in claim 1 , wherein claim 1 , for the hydrothermal carbonization treatment claim 1 , the pressurization in the reactor is between 10 and 30 bar claim 1 , preferably of the order of 20 bar claim 1 , and the thermal conditioning is carried out by heating the products between 150 and 250° C. in the reactor.3. The method as ...

ELECTROMAGNETIC-FORCE-BASED DEWATERING FOR SEWAGE SLUDGE REDUCTION

For sewage sludge reduction, an apparatus includes a front-end auxiliary filter plate, a back-end auxiliary filter plate, and a plurality of filter plate modules disposed between the front-end auxiliary filter plate and the back-end auxiliary filter plate. Each filter plate module includes a middle main filter plate, a middle auxiliary filter plate, and a plurality of electromagnetic modules comprising an electromagnetic coil wound around an electromagnetic core. The middle main filter plate and the middle auxiliary filter plate are disposed at opposite sides of the electromagnetic modules. A plurality of microwave generators send microwaves through microwave acting channels to irradiate the sewage sludge. An electric current is applied to the electromagnetic coil, attracting the middle auxiliary filter plates and the main filter plates and applying pressure to the sewage sludge. 1. An apparatus comprising:a front-end auxiliary filter plate;a back-end auxiliary filter plate;a plurality of filter plate modules disposed between the front-end auxiliary filter plate and the back-end auxiliary filter plate, wherein each of the filter plate modules includes a middle main filter plate, a middle auxiliary filter plate, and a plurality of electromagnetic modules comprising an electromagnetic coil wound around an electromagnetic core, the middle main filter plate and the middle auxiliary filter plate are disposed at opposite sides of the electromagnetic modules, the middle main filter plates of the plurality of filter plate modules face the front-end auxiliary filter plate and the middle auxiliary filter plate of the plurality of filter plate modules face the back-end auxiliary filter plate and there is a consistent one-to-one match between the main filter plates and the auxiliary filter plates that form a plurality of filter chambers into which sewage sludge enters via sludge inlet pipes, wherein the outer side of the front-end auxiliary filter plate and the inner side of ...

Screw conveyor type separation apparatus and wastewater treatment system

A casing that squeezes sludge floc at one end portion, a screw shaft, a first screw blade spirally provided on an outer peripheral surface of the screw shaft, and a second screw blade provided side by side along a longitudinal direction of the screw shaft with the first screw blade with a predetermined interval from the first screw blade, are included. In the casing, a concentration zone and a separated liquid zone, which are substantially divided from each other by the first screw blade and the second screw blade, are formed. By rotation of the screw shaft, the sludge floc is squeezed in the concentration zone to be separated into sludge and separated liquid, and the separated liquid is moved rearward in the separated liquid zone to be discharged, while the sludge is discharged outside.

ANAEROBIC TREATMENT OF INDUSTRIAL WASTEWATER

Feed water is processed in an anaerobic digester. A solid-liquid separation device, for example a sludge screw thickener, treats a stream drawn from the digester in a recirculation loop. The solids portion is returned to the digester to increase the solids retention time and the TSS concentration in the digester. A liquid portion with less than 5% of the solids in the stream is removed and optionally treated further. The flow rate to the solid-liquid separation device is preferably greater than the influent flow rate. The solid-liquid separation device may receive digestate at a TSS concentration of 4% or more and return a solids portion having a TSS concentration of over 10%. The feed water is preferably one or more industrial waste streams having a COD concentration of 20,000 to 50,000 mg/L and a TSS concentration from 1-5%. The organic loading rate may be 10-12 kg/COD/m3/day. 1. A method for treating wastewater comprising steps of ,a) feeding an influent at a flow rate Q to an anaerobic digester;b) feeding a mixture from the anaerobic digester a flow rate of Q or more to a solid liquid separation device;c) separating the mixture into a liquid portion and a solids portion; and,d) returning at least most of the solids portion to the anaerobic digester.2. The method of wherein the solid liquid separation device is a screw thickener.3. The method of wherein substantially all of the solids portion is returned to the anaerobic digester.4. The method of wherein the anaerobic digester has a TSS concentration of 4 to 7%.5. The method of wherein the solids portion has a TSS concentration of over 10%.6. The method of wherein the solids portion has a TSS concentration of over 12%.7. The method of wherein the solids portion has a TSS concentration in the range of 12-14%.8. The method of wherein the organic loading rate of the anaerobic digester is at least 10 kg/COD/m3/day.9. The method of wherein the influent has a chemical oxygen demand concentration of about 20 claim 1 , ...

WASTEWATER TREATMENT APPARATUS CAPABLE OF PERFORMING BOTH INITIAL RAINWATER OVERFLOW TREATMENT AND PRIMARY TREATMENT, AND WASTEWATER TREATMENT METHOD ACCORDING TO SAID APPARATUS

A wastewater treatment apparatus performs both initial rainwater overflow treatment and primary treatment. A wastewater treatment method according to the apparatus, the apparatus modifying an existing primary depositing reservoir to an up-flow high-speed filtration facility, the apparatus using a floating filter and biological filter paper applied to an existing depositing reservoir to perform an initial rainwater treatment. The apparatus can be applied to an existing wastewater treatment facility to eliminate the necessity of installing an additional facility for an initial rainwater treatment facility. The apparatus is further capable of adjusting the flow rate into a biological treatment facility to achieve a target water quality. The apparatus comprises: an up-flow high-speed filtration facility for filtering floating matter contained in wastewater using a floating filter; a sludge holding tank; a biological treatment facility for removing dissolved organic matter contained in the water discharged from the up-flow high-speed filtration facility; and a concentrator. 1. A wastewater treatment apparatus capable of performing both of an initial rainwater overflow treatment and a primary treatment , comprising:an up-flow high-speed filtration facility configured to filter floating matter contained in wastewater using a floating filter;a sludge holding tank configured to hold intermittently generated backwash water and thus equalize a flow rate and a load of a follow-up concentrator;a biological treatment facility configured to remove dissolved organic matter contained in water discharged from the up-flow high-speed filtration facility; anda concentrator configured to increase a concentration of backwash sludge of the sludge holding tank before the backwash sludge is injected into a sludge treatment process.2. The wastewater treatment apparatus of claim 1 , wherein a backwash water discharging unit configured to discharge the backwash sludge of the up-flow high-speed ...

AUTOMATIC CONTROL OF BIOCHEMICAL OXYGEN DEMAND CONTENT (BOD) OF SLUDGE AND OTHER PRODUCTS OF A WASTE WATER TREATMENT SYSTEM

A method of controlling an enhanced primary treatment (EPT) system that includes an EPT settling tank. A sludge drain discharges a sludge including BOD from the EPT settling tank and a clarified effluent discharge recovers decanted fluid from the EPT settling tank. A controller has at least one computer processor. A sludge sensor is communicatively coupled to the controller. The sludge sensor provides a sludge BOD concentration measurement, or a measurement from which the sludge BOD concentration is calculated. A process algorithm controls the sludge valve to control the discharge of the sludge by gravity or by pumping in response to data from the sludge sensor of the sludge BOD concentration. 1. A method of controlling an enhanced primary treatment (EPT) system comprising the steps of:providing an EPT system having an EPT settling tank including a controller running a process algorithm configured to read at least a sludge sensor, and to control at least one of a sludge discharge valve and a sludge discharge pump coupled to said controller;measuring by use of said sludge sensor a biochemical oxygen demand content (BOD) concentration of a sludge discharge from a settling tank of said EPT system with a sensor communicatively coupled to a controller; andcontrolling by said controller, said at least one of a sludge discharge valve and a sludge discharge pump in response to said BOD concentration of a sludge discharge to automatically maintain a desired BOD concentration of said sludge discharge.2. The method of claim 1 , wherein providing said sludge sensor comprises providing a sludge sensor from the group consisting of an ultraviolet absorption (UVa) spectrophotometer claim 1 , a total suspended solids (TSS) sensor claim 1 , a turbidity (TRB) sensor and a chemical oxygen demand (COD) sensor.3. The method of claim 1 , wherein said step of controlling comprises controlling at least one variable speed pump or at least one variable position valve under proportional ...

TREATMENT OF OIL SANDS TAILINGS WITH LIME AT ELEVATED PH LEVELS

Methods and systems for treating oil sands tailings streams at an elevated pH using lime are disclosed herein. In some embodiments, the method comprises providing a tailings stream including 10-55% solids by total weight, increasing the pH of the tailings stream by combining the tailings stream with lime to produce a lime-tailings mixture having a pH of at least 11.0, and dewatering the lime-tailings mixture to produce a first stream having 10% or less solids by total weight and a second stream having 50% or more solids by total weight. The first stream can correspond to a release water stream, and the second stream can correspond to a cake. The lime slurry can include about 10% lime by total weight, and can comprise lime hydrate, quicklime, or a combination thereof. Dewatering the lime-tailings mixture can include routing the lime-tailings mixture to a centrifuge unit and/or a pressure or vacuum filtration unit. 1. A method for treating oil sands tailings , the method comprising:mixing a tailings stream with a lime additive to produce a lime-tailings mixture having a pH of about 11.0 or greater; anddewatering the lime-tailings mixture to produce a cake including at least 55% solids by total weight.2. The method of wherein the lime-tailings mixture has a pH of about 12.0 or greater.3. The method of wherein the lime tailings mixture has a pH of about 12.5.4. The method of wherein the lime additive is a lime slurry including one or more of hydrated lime claim 1 , quicklime claim 1 , enhanced hydrated lime and dolomitic lime.5. The method of wherein the lime additive includes calcium hydroxide and/or calcium oxide.6. The method of wherein the lime additive includes a lime slurry comprising 10% lime or less by total weight.7. The method of wherein dewatering includes filtering the lime-tailings mixture via pressure or vacuum filtration.8. The method of wherein dewatering includes centrifuging the lime-tailings mixture via a scroll centrifugation unit.9. The method of ...

Membrane cleaning and desalination with a membrane using acoustic pressure shock waves

Acoustic pressure shock waves are applied to a membrane in a fluid to prevent attachment of or dislodge biological or solid matter for membrane cleaning or desalination with a membrane.

CONTAMINANT-FREE FERTILIZER FROM LIQUIDIZED SEWAGE SLUDGE

Hydrophobic contaminants are removed from sludge that has been liquidized by violent shearing, by stirring a hydrophobic sorbent substance material into the sludge. After a period of time in which the contaminants are sorbed into the sorbent, the sorbent substance is separated from the sludge by gravity-settling, centrifuging, etc, where the sorbent is a liquid, or by filtration etc where the sorbent is a solid. Some sorbents have a melting point such that the sorbent can be liquid for good dispersal in heated sludge, and then can be solid when the sludge has cooled, whereby the sorbent can be removed e.g by filtration. Liquefaction by violent shearing causes the biosolids in the sludge to go into solution, which leaves the hydrophobic contaminants more available to be sorbed. 1. Procedure for removing a hydrophobic contaminant from liquidized sewage sludge , including:[2] mixing a hydrophobic sorbent substance and the liquidized sludge in a vessel, forming a mixture thereof;[3] then leaving the hydrophobic sorbent substance mixed into the liquidized sludge for such residence time period that the hydrophobic contaminant is substantially sorbed out of the sludge and into the hydrophobic sorbent substance;[4] where the hydrophobic sorbent substance is so constituted as to be capable, having been mixed into the sludge, of then being physically separated from the sludge;[5] then physically separating the now-contaminant-laden hydrophobic sorbent substance from the liquidized sludge.2. As in claim 1 , including stirring the mixture in the vessel to such effect that the hydrophobic sorbent substance is distributed substantially evenly through the liquidized sludge.3. As in claim 2 , including:[2] where the hydrophobic sorbent substance is so constituted as to be capable, having been mixed into the sludge, of being physically filtered out of the sludge;[3] separating the contaminant-laden hydrophobic sorbent substance from the sludge by passing the mixture through a ...

METHOD FOR DISTILLING LIQUIDS IN AN INERT GAS ENVIRONMENT

The invention relates to a method for performing a heat and mass exchange process for a liquid-liquid, gas-liquid, and liquid-solid system. A method for distillation of liquids at inert gas environment comprising: introducing an initial mixture and a non-condensable inert gas, converting of one or more components of the initial mixture into a gas phase at inert gas environment, withdrawing the separation products, separating one or more components of the initial mixture of gas phase from the inert gas. The ratio of the mass of the introduced non-condensable inert gas to the mass of inert gas providing, in aggregate with the vapors of the substance to be removed the same volume of vapor phase at the point of its introduction, as in the process without the introduced inert gas at a lower pressure at the same process temperature, is 0,5-5,0. 1. A method for distillation of liquids at inert gas environment , said method consisting of the steps of:introducing an initial mixture,introducing a non-condensable inert gas,converting of one or more components of the initial mixture into a gas phase at inert gas environment,withdrawing the separation products,separating one or more components of the initial mixture of gas phase from the inert gas,wherein the ratio of the mass of the introduced non-condensable inert gas to the mass of inert gas providing, in aggregate with the vapors of the substance to be removed the same volume of vapor phase at the point of its introduction, as in the process without the introduced inert gas at a lower pressure at the same process temperature, is 0,5-5,0.2. The method according to further comprising step of returning the inert gas to interact with the initial mixture.3. The method according to wherein the introduction and/or withdrawal of the inert gas is carried out in several stages during the separation of the initial mixture.4. The method according to wherein separating one or more components of the initial mixture of gas phase is ...

SYSTEMS AND METHODS FOR ENHANCING EFFICIENCY OF WASTEWATER TREATMENT

A wastewater treatment system is provided for improving the efficiency of existing wastewater treatment plants. In accordance with aspects and embodiments, a wastewater system having a source of wastewater, an effluent, a sludge, a first basin configured to receive the wastewater, and a second basin, in fluid communication with the first basin and configured to receive sludge, may be retrofitted with a closed loop working fluid system. A first membrane system may be arranged in the first basin and a second membrane system may be arranged in the second basin, and a working fluid containing a concentration of at least one solute may be pumped through the first and second membrane systems in a closed loop to enhance overall plant efficiency. 1. A wastewater treatment system comprising:a source of wastewater, an effluent, and a sludge;a first basin configured to receive the source of wastewater, the first basin in fluid communication with a plurality of downstream wastewater treatment modules, the first basin further comprising a first membrane system;a second basin in communication with the plurality of downstream wastewater treatment modules configured to hold the sludge, the second basin further comprising a second membrane system; wherein the first basin and the second basin are in fluid communication with one another and a pump circulates a working fluid containing a concentration of at least one solute.2. The system of claim 1 , wherein the working fluid passes through the first membrane system and is in fluid communication with the source of wastewater.3. The system of claim 2 , wherein the working fluid passes through the second membrane system and is in fluid communication with the sludge.4. The system of claim 3 , wherein the concentration of the at least one solute in the working fluid in the first membrane system is lower than a concentration of the solute in the source of wastewater.5. The system of claim 4 , wherein an osmotic pressure gradient occurs ...

Tailings Treatment Process

Embodiments relate continuous process for treating tailings that includes providing tailings for treatment having at least 20 wt % solids, providing a mixing apparatus having a first inlet for feeding the tailings, a second inlet for feeding flocculants, an outlet for a mixture of the tailings and flocculants, and a rotating disk, the first inlet being separate from the second inlet, the second inlet being above the rotating disk, and the rotating disk having a tip speed at least 2 m/s, continuously introducing into the mixing apparatus the tailings through the first inlet and the flocculants through the second inlet, allowing the tailings and the flocculants to mix on the rotating disk to form the mixture of the tailings and flocculants, continuously removing the mixture of the tailings and flocculants through the outlet to form a treated mixture, and flowing the treated mixture from the mixing apparatus for further treatment or to a disposal area. 1. A continuous process for treating tailings , the process comprising:providing tailings for treatment having at least 20 wt % solids, based on a total weight of the tailings;providing a mixing apparatus having a first inlet for feeding the tailings, a second inlet for feeding flocculants, an outlet for a mixture of the tailings and flocculants, and a rotating disk, the first inlet being separate from the second inlet, the second inlet being above the rotating disk, and the rotating disk having a tip speed at least 2 m/s;continuously introducing into the mixing apparatus the tailings through the first inlet and the flocculants through the second inlet;allowing the tailings and the flocculants to mix on the rotating disk to form the mixture of the tailings and flocculants;continuously removing the mixture of the tailings and flocculants through the outlet to form a treated mixture; andflowing the treated mixture from the mixing apparatus for further treatment or to a disposal area.2. The process of claim 1 , wherein for ...

SYSTEM FOR COAL ASH CLEANUP

A system for cleanup of coal ash mixed with water from an original settling pond comprises a dredge configured to lift the coal ash mixed with water from beneath the water level, a transport line configured to receive the coal ash mixed with water from the dredge and move the coal ash mixed with water out of the original settling pond, and at least one designed dewatering cell configured to receive the coal ash mixed with water from the transport line. A bulk solids handler is configured to remove the coal ash from the dewatering cell after a predetermined portion of the water has been removed, and a conveyor is configured to receive the removed coal ash from the bulk solids handler and transport the coal ash to a predetermined delivery point. 1. A system for cleanup of coal ash mixed with water from an original settling pond , wherein the coal ash lies under a water level in the settling pond , the system comprising the following:a dredge configured to lift coal ash mixed with water in an original settling pond from beneath a water level;a transport line configured to receive the coal ash mixed with water from the dredge and move the coal ash mixed with water out of the original settling pond;at least one designed dewatering cell configured to receive the coal ash mixed with water from the transport line and remove a predetermined portion of the water from the received coal ash mixed with water to leave a bed of dewatered coal ash;a bulk solids removal apparatus configured to drive on the bed of dewatered coal ash to remove the dewatered coal ash from the bed, the bulk solids removal apparatus being one of a continuous miner, a continuous loader or a bulk solids handler; anda conveyor configured to receive the removed dewatered coal ash from the bulk solids removal apparatus and transport the dewatered coal ash to a predetermined delivery point outside the dewatering cell.2. The system for cleanup of coal ash of claim 1 , wherein the dredge is a hydraulic suction- ...

METHOD FOR DEWATERING OF SLUDGE FROM A PULP, PAPER OR BOARD MAKING PROCESS

A method is disclosed for dewatering of sludge from a pulp, paper or board making process, such as deinking sludge, including obtaining of an aqueous sludge including an aqueous phase and a fibre material suspended in the aqueous phase. The sludge is subjected to a pre-thickening step, where a first part of the aqueous phase is removed from the sludge and to a pressing step, where a second part of the aqueous phase is removed from the sludge, thereby obtaining a dry pressed sludge. Before or at the pre-thickening step a polymer composition having a charge density of at the most 1.7 meq/g, preferably at most 1.5 meq/g, more preferably at most 1.1 meq/g, is added to the sludge. 1. A method for dewatering of sludge from a pulp , paper or board making process , such as deinking sludge , the method comprising:obtaining an aqueous sludge comprising an aqueous phase and a fibre material suspended in the aqueous phase,subjecting the sludge to a pre-thickening step, wherein a first part of the aqueous phase is removed from the sludge,subjecting the sludge to a pressing step, wherein a second part of the aqueous phase is removed from the sludge and obtaining a dry pressed sludge, andadding to the aqueous sludge before or at the pre-thickening step a polymer composition having a charge density of at the most 1.7 meq/g, preferably at the most 1.5 meq/g, more preferably at the most 1.1 meq/g, and comprising:a cationic synthetic first polymer, which has a charge density at least 1.0 meq/g at pH 2.8, anda cationic second polymer, which is a copolymer obtained by polymerisation of (meth)acrylamide and at least one cationic second monomer, the amount of cationic monomers being 2-19 weight-%, calculated from the total amount of the monomers, the second polymer being polymerised in presence of the cationic first polymer,wherein the first polymer has a higher charge density than the second polymer.2. The method according to claim 1 , wherein the cationic first polymer has charge ...

Anaerobic treatment of industrial wastewater

Feed water is processed in an anaerobic digester. A solid-liquid separation device, for example a sludge screw thickener, treats a stream drawn from the digester in a recirculation loop. The solids portion is returned to the digester to increase the solids retention time and the TSS concentration in the digester. A liquid portion with less than 5% of the solids in the stream is removed and optionally treated further. The flow rate to the solid-liquid separation device is preferably greater than the influent flow rate. The solid-liquid separation device may receive digestate at a TSS concentration of 4% or more and return a solids portion having a TSS concentration of over 10%. The feed water is preferably one or more industrial waste streams having a COD concentration of 20,000 to 50,000 mg/L and a TSS concentration from 1-5%. The organic loading rate may be 10-12 kg/COD/m3/day.

SLUDGE SCREW THICKENER WITH SCREEN ROTATION DURING CLEANING

A screw press has a cylindrical screening section mounted to a frame. The screening section is able to rotate but can be prevented from rotating. A sprayer system is operable to spray water on the screening section. In a cleaning process, the screening section is rotated while water is sprayed against it. Optionally, the power required to rotate the screen may be provided by an auger drive mechanism. The screening section may have openings sized to retain flocculated solids. The screw press may be used to thicken a sludge from a waste water treatment plant. 1. A screw press having a screening section that may be selectively fixed or allowed to rotate.2. The screw press of wherein the screening section is generally cylindrical and mounted to a frame of the screw press such that the screening section may rotate relative to the frame.3. The screw press of comprising a releasable restraint between the screening section and the frame.4. The screw press of further comprising a sprayer system located outside of the screening body.5. The screw press of further comprising an auger within the screening body.6. The screw press of wherein the auger has a shaft with increased diameter towards an outlet end of the screw press.7. The screw press of comprising a motor adapted to rotate the screening section.8. The screw press of wherein the motor is adapted to rotate the screening section by way of rotating the auger while the screening section is allowed to rotate.9. The screw press of comprising a detachable connection between the motor and the screening section.10. The screw press of wherein the screening section has openings sized to remove floc from a sludge.11. The screw press of wherein the screening section comprises wedgewire with a slot opening in the range from about 0.25 mm to about 0.75 mm.12. A screw press having a screening section with openings sized to remove floc from a sludge.13. The screw press of wherein the screening section comprises wedgewire with a slot ...

POLYMER FLOCCULANT MIXING AND DISSOLVING SYSTEM, AND METHOD FOR MIXING AND DISSOLVING POLYMER FLOCCULANT

The present invention provide a polymer flocculant mixing and dissolving system and a method for mixing and dissolving a polymer flocculant that can produce a polymer flocculant solution in a short period of time using low power. 1. A polymer flocculant mixing and dissolving system comprising:a mixing tank in which a solid polymer flocculant is mixed with water as a solvent;a liquid feed unit for feeding an aqueous solution containing the mixed polymer flocculant from the mixing tank;a regenerative mixer that comprises a casing arranged at an intermediate position of a channel for the aqueous solution discharged from the liquid feed unit, and a bladed wheel in which grooves are formed in a radial pattern all over an outer circumference, and is used to mix and dissolve the polymer flocculant through pressure application by rotating the bladed wheel in the casing and forming a vortex flow of the aqueous solution along an inner circumferential wall of the casing; anda pressure adjusting unit arranged at an intermediate position of a channel for the aqueous solution that has passed through the regenerative mixer, and controls pressure on a discharge side of the regenerative mixer,wherein the pressure adjusting unit has information regarding a pressure set value determined in association with a type of polymer flocculant, and performs pressure control such that the pressure on the discharge side of the regenerative mixer is applied to a pressure corresponding to the type of polymer flocculant.2. The polymer flocculant mixing and dissolving system according to claim 1 , wherein the regenerative mixers are arranged in series at least two positions in the channel for the aqueous solution discharged from the liquid feed unit claim 1 , the regenerative mixers successively applying pressure to the aqueous solution at the respective positions.3. The polymer flocculant mixing and dissolving system according to claim 2 , further comprising:a power detecting unit for detecting ...

Waste disposal methods

Embodiments of the present disclosure include systems and methods for collecting, storing, separating, and disposing of waste material from an oil and gas well site in order to enhance payload efficiency. An embodiment of a method, for example, may include introducing a waste material into an enhanced-payload mobile vessel positioned at the oil and gas well site, the waste material selected to include one or more of a sludge waste material, a solids-laden wastewater material, and a dry waste material. The method may further include transporting the waste material when positioned in the enhanced-payload mobile vessel along roadways to an off-site waste management facility. Additionally, the method may include dumping the waste material from the enhanced-payload mobile vessel by a site-based lifting mechanism into a receiving vessel at the off-site waste management facility thereby to dispose of the waste material at a reduced transportation cost.

DYNAMIC DEWATERING SYSTEM

A system is provided for the dynamic dewatering of any of a variety of sludges, slurries, or water waters. A stream of material is treated in a series of distinct operations to release free water, draw off additional water through vacuum, and compress the resultant dewatered solids to result in a substantially dewatered material. One or more open cells are used in vacuum dewatering in continuous dynamic operation. The system may be integrated into a packaged unit that may be installed at a operation site, and maybe operated with multiple like units to increase treatment flowrates. 1. A dewatering system comprising:an inclined screen configured to receive influent and allow water to separate from the influent to form a material;a vacuum dewatering cell having a top and a bottom and a multiple of walls forming a cavity, at least two of the walls each comprising at least one cell partition, and 'each cell partition has a porous surface and the cell partition configured to receive water through the porous surface, and each cell partition is connected to a vacuum source; and', 'whereina first conveyor located in the bottom and configured to remove material from the dewatering cell;a vacuum conduit located within the cavity and between the walls ;a compression device located and configured to accept material conveyed from the second conveyer, the compression device capable of compressing the material to release water;the vacuum dewatering cell configured to accept the material from the screen;such that material may continuously flow from the top of the dewatering cell to the bottom as water is drawn away through the cell partitions.2. A dewatering system claim 1 , according to claim 1 , and wherein:the compression device comprises a pair of rollers; each roller of the pair comprising surface fingers configured to interlock with fingers of the other roller to enable receiving and compressing material therebetween.3. A dewatering system claim 1 , according to claim 1 , and ...

FLAT-WIRE BELT CONVEYORS

Separation units for dewatering slurries such as flat-wire belt conveyors are disclosed. In some embodiments, the separation unit includes a tension pulley for maintaining tension in the flat-wire conveyor belt. The flat-wire conveyor belt is looped around the head pulley, tail pulley and tension pulley. In some embodiments, the head pulley and/or tail pulley include teeth for removing material from the mesh openings of the flat-wire belt conveyor. 1. A separation unit for dewatering a slurry comprising:a conveyor belt having mesh openings to separate material in the slurry;a head pulley;a tail pulley; anda tension pulley for maintaining tension in the flat-wire conveyor belt, the conveyor belt being looped around the head pulley, tail pulley and tension pulley.2. The separation unit as set forth in comprising a floor to carry liquid and any solids that passes through the conveyor belt toward a separation unit liquid outlet claim 1 , the separation unit having a pivot axis about which the floor and tension pulley may pivot to allow the tension pulley and floor to rise and fall with changes in belt loading and/or length.3. The separation unit as set forth in comprising deflectors to turn solids on a top course of the belt.4. The separation unit as set forth in wherein the tail pulley comprises teeth that protrude through the belt mesh openings during rotation of the belt to push material through the mesh openings.5. The separation unit as set forth in wherein the teeth are arranged in rows claim 4 , the teeth in each row being circumferentially staggered.6. The separation unit as set forth in wherein each tooth is staggered from adjacent teeth in the row.7. The separation unit as set forth in wherein the separation unit is angled upward from the tail pulley toward the head pulley.8. The separation unit as set forth in wherein the belt is a flat wire belt conveyor that includes bands that form the mesh openings.9. A separation unit for dewatering a slurry comprising:a ...

CENTRIFUGAL DEHYDRATOR AND CENTRIFUGAL DEHYDRATION METHOD

A centrifugal dehydrator according to an embodiment of the present disclosure for solving the above problems includes: a slurry flow tube through which slurry, in which polymers and water are mixed, flows; a gas flow tube through which a gas flows; a mixture flow tube which is connected from the slurry flow tube and the gas flow tube and through which a mixture of the slurry and the gas flows; a basket into which the mixture is injected from the mixture flow tube and which rotates to apply centrifugal force to the slurry in the mixture; a driving part that allows the basket to rotate; and a porous plate disposed on a peripheral portion of the basket to discharge the water from the slurry to the outside of the basket. 1. A centrifugal dehydrator comprising:a slurry flow tube through which a slurry, in which polymers and water are mixed, flows;a gas flow tube through which a gas flows;a mixture flow tube which is connected from the slurry flow tube and the gas flow tube and through which a mixture of the slurry and the gas flows;a basket into which the mixture is injected from the mixture flow tube and which rotates to apply centrifugal force to the slurry in the mixture;a driving part that allows the basket to rotate; anda porous plate disposed on a peripheral portion of the basket to discharge the water from the slurry to the outside of the basket2. The centrifugal dehydrator of claim 1 , wherein the gas comprises an inert gas.3. The centrifugal dehydrator of claim 1 , wherein the gas comprise a dry air.4. The centrifugal dehydrator of claim 1 , wherein the gas is discharged to the outside of the basket through the porous plate.5. The centrifugal dehydrator of claim 4 , wherein the discharged gas flows to a feedback tube to flow to the gas flow tube.6. The centrifugal dehydrator of claim 5 , wherein the gas passes through a dehumidifier before flowing to the gas flow tube.7. The centrifugal dehydrator of claim 1 , wherein the gas flows at a flow rate of 5 L/min to ...

Method(s) and Apparatus For Treating Waste

The present invention relates to method(s), apparatus and use(s) of apparatus for treating materials such as waste products and by-products of industrial processes e.g. slurries comprising solids and liquids, or, more particularly, slurries comprising solids, oil(s), and water. The invention further relates to method(s), apparatus and use(s) for treating slurry, the apparatus comprising a treatment chamber having a first end configured to receive slurry to be treated and a second end configured to allow egress of solids; at least one heated material conveyor configured to draw material comprising slurry and/or solids through the chamber in a direction from the first end towards the second end; the at least one heated material conveyor being further configured to heat and mix material comprising slurry and/or solids as these are drawn along; a condenser configured to receive vapours from the chamber and condense the vapours into liquid form. 1. An apparatus for treating slurry , the apparatus comprising:a treatment chamber having a first end configured to receive slurry to be treated and a second end configured to allow egress of solids;at least one heated material conveyor configured to draw material comprising slurry and/or solids through the chamber in a direction from the first end towards the second end;the at least one heated material conveyor being further configured to heat and mix material comprising slurry and/or solids as these are drawn along;a condenser configured to receive vapours from the chamber and condense the vapours into liquid form.2. The apparatus according to in which the treatment chamber is configured to support a vacuum and the apparatus further comprises a vacuum pump claim 1 , and in which the vacuum pump is configured to provide a vacuum in the treatment chamber of: <1 bar claim 1 , about 0.25 to about 0.75 bar claim 1 , about 0.4 bar claim 1 , about 0.5 bar claim 1 , 0.25 to 0.75 bar claim 1 , 0.4 bar claim 1 , 0.5 bar claim 1 , <0.5 ...

Organics and Nutrient Recovery from Anaerobic Digester Residues

Sludge from an anaerobic digester is treated to recover one or more of fibers, or solids or liquids with a high nutrient content. The solids or liquids can be used as a fertilizer. The fibers can be used in a plant growing medium. Solids are separated from liquids in the sludge and dried. The solids may be dried to produce a flake or pellet. Ammonia in the liquids is recovered and used to produce a concentrated acidic ammonium salt solution. This solution may be mixed with the solids to produce a nitrogen enhanced solid. The fibers and solids or liquids can also be used in combination to produce an enhanced plant growing medium. A device and process for removing ammonia from a liquid can be used in the system or separately. 1. A process for removing ammonia from a liquid comprising steps of ,a) flowing the liquid through a series of sequential stages;b) introducing bubbles, for example of air, into the liquid in the stages; and,c) extracting one or more gasses in communication with the surface of the liquid in the stages.2. The process of wherein the liquid is heated or maintained at a temperature of 50 degrees C.3. The process of wherein step c) comprises flowing air across the surface of the liquid in the stages or applying suction to the surface of the liquid in the stages.4. The process of wherein the stages are provided in a set of jacketed reactors connected in series.5. The process of wherein the liquid flows downwards through each of the jacketed reactors.6. The process of wherein the bubbles rise upwards through the liquid in the stages.7. A process for removing ammonia from a liquid comprising steps of claim 1 ,a) providing bubbles in the liquid by one or more of blowing a gas into the liquid and cavitation; and,b) separating the bubbles from the liquid.8. The process of wherein the liquid and bubbles are present in a tank and further comprising a step of providing a flow of gas over the surface of the liquid in the tank.9. The process of performed in ...

Biowaste treatment system and a method of biowaste treatment in association therewith

A decentralized based biowaste treatment system for treating biowaste (i.e., organic matter type/based waste such as manure, sawdust and/or food scraps) by manner of anaerobic digestion (e.g., an anaerobic digestion based waste-to-resource system) and a method of biowaste treatment in association with the biowaste treatment system.

SYSTEM FOR PROVIDING HOMOGENOUS POLYMER-SLUDGE COMPOSITION TO DEWATERING EQUIPMENT

An improved system for providing a homogeneous polymer-sludge composition to dewatering equipment includes an input mechanism that is adapted to receive sludge from a first supply source, and polymer materials from a second supply source. The input mechanism functioning to perform an initial blending of the materials before discharging the same to a pump unit. The pump unit comprising a boundary layer viscous drag pump that functions to efficiently and simultaneously mix and pump the polymer/sludge material to dewatering equipment in a manner that does not shear the polymer or reduce the efficiency, as previously experienced with downstream mixing units. 1: A system for providing a homogeneous polymer-sludge composition to dewatering equipment , said system comprising:a mixing unit having a first input member for receiving sludge, a second input member for receiving polymer, and an output member for discharging a first mixed solution; anda boundary layer viscous drag disc pump that is in fluid communication with the output member of the mixing unit, said pump being configured to pull the first mixed solution from the output member, to perform a second mixing procedure on the first mixed solution, and to supply a second mixed solution to a piece of dewatering equipment.2: The system of claim 1 , wherein the second mixed solution comprises:a homogeneous polymer-sludge composition.3. The system of claim 1 , wherein the second mixed solution comprises:a non-sheared homogeneous polymer-sludge composition.4. The system of claim 1 , wherein the output member of the mixing unit is directly coupled to an input of the pump.5. The system of claim 1 , wherein the output member of the mixing unit is positioned a discrete distance from an input of the pump.6. The system of claim 1 , wherein the mixing chamber includes a central channel for performing a first mixing procedure.7: The system of claim 6 , wherein the central channel comprises a polymer injection ring.8: The system of ...

PROCESS FOR REMOVAL OF WATER (BOTH BOUND AND UNBOUND) FROM PETROLEUM SLUDGES AND EMULSIONS WITH A VIEW TO RETRIEVE ORIGINAL HYDROCARBONS PRESENT THEREIN

The present invention discloses a process for pretreatment of viscous hydrocarbon sludge and subsequent process for removal bound water thereby either opting for a total reflux of solvent till achieving till achieving a boiling point of the solvent. The present invention further discloses a process for pretreatment of non-viscous hydrocarbon sludge and subsequent process for removal bound water thereby opting for a complete reflux of solvent till a maximum temperature of 99° C. when the solvent has a boiling point distinctly below 99° C. The present invention further discloses a process for treatment of non-viscous sludge thereby opting for complete reflux of solvent either till boiling point of solvent or till boiling point of solvent when the boiling point of solvent is distinctly lower than boiling point of hydrocarbons present in the non-viscous sludge. 1. A process for treatment of sludge mixture , emulsions and water bearing hydrocarbons preferably with determined quantity of water present therein , said process comprising the steps of:a) pretreating the sludge mixture for removal of unbound water, salts, solids, water soluble emulsifiers, free flowing hydrocarbons and viscous pure hydrocarbons thereby obtaining a predefined amount of remaining sludge;b) segregating the remaining sludge by viscosity using separation equipment followed by recovering a plurality of recovered fractions separately for removal of entire or partial bound and/or unbound water therefrom;c) treating a plurality of different hydrocarbon fractions containing bound water and low boiling hydrocarbons thereby optionally adding free water followed by heating up to a boiling point of the water thereby employing steam stripping in said process;d) treating a plurality of hydrocarbon fractions separately for removal of both bound and unbound water recovered in step b) thereby selectively depressing boiling point through addition of a predefined amount of water immiscible solvent in said process; ...

Multi-functional fecal waste and garbage processor and associated methods

At least one aspect of the technology provides a self-contained processing facility configured to convert organic, high water-content waste, such as fecal sludge and garbage, into electricity while also generating and collecting potable water.

SLUDGE PROCESSING SYSTEM AND STORAGE MEDIUM STORING A PROGRAM FOR CONTROLLING AN OPERATION OF A SLUDGE PROCESSING SYSTEM THEREON

Disclosed is a sludge processing system having a centrifugal separator concentrating the sludge and a furnace heat-treating the concentrated sludge. It allows automatic control in which the operational condition of the centrifugal separator operates under optimal conditions according to the operational state of the furnace. The control device sets a variable range of a differential speed between the bowl and screw conveyor of the centrifugal separator, and variably controls the differential speed so concentrated sludge convey torque of the screw conveyor achieves a torque corresponding to a moisture content requested by the furnace within the variable range, when the differential speed varies within a certain previously set range and the concentrated sludge convey torque of the screw conveyor maintains the torque corresponding to the moisture content requested by the furnace for a certain period of time being previously set, changes a control value of the centrifugal force and the torque. 1. A sludge processing system comprising:a centrifugal separator which concentrates the sludge,a furnace which heat-treats the concentrated sludge, andan automatic control device which receives, from the furnace, the information regarding a heat-treatment state of the concentrated sludge and, controls the centrifugal separator based on the received information,wherein the centrifugal separator includes a bowl by which centrifugal force is applied to the sludge so as to separate the sludge into the concentrated sludge and the separated liquid, a screw conveyor to convey the concentrated sludge contained in the bowl to an exhaust port, a drive motor to rotate the bowl, a differential speed generator to cause the screw conveyor to rotate at a differential speed relative to the bowl,wherein the information received from the furnace to the automatic control device include a moisture content change request regarding the concentrated sludge, andwherein, in response to the moisture content ...