Method for processing industrial waste acid solution and preparing drying agent by using dolomite-containing attapulgite clay

The invention relates to a method of processing industry waste acid liquid and preparing desiccant with dolomite attapulgite clay, which is characterized in that: according to a volume mass ratio of the waste acid liquid and the dolomite attapulgite clay of 0.4 to 1 L/kg, the dolomite attapulgite clay powder is added in the waste acid liquid; a neutralization reaction occurs between the dolomite in the clay and the waste acid liquid, thereby the pH value of reacted mixture is more than 3, and the water content of the mixture is controlled; an attapulgite clay compound desiccant is obtained after the hydrous mixture is molded and calcined; the industry waste liquid acid comprises acid waste liquid produced by active clay, the acid waste liquid of active silicon dioxide which adopts attapulgite clay or swell soil and hydrochloric acid or sulphuric acid as raw material, etc. The invention not only processes and utilizes the attapulgite clay or swell soil to process the acid waste liquid and ...

Method for producing inorganic macromolecule flocculant polymerized iron aluminum chloride

Material and method for processing water containing heavy metal ion

The invention relates to a material containing heavy metal ions and a handling method thereof, which is characterized in that the material focuses on iron sulfide or manganese sulfide, and by weight percentage, the sulfur content in the material is more than 10 percent; the iron sulfide and manganese sulfide include FeS, MnS, FeS2, Fe3S4, Fe2S3 and Fe1-xS; the heavy metal ions include Cd<2+>, Hg<2+>, Ag<+>, Pb<2+>, Cr<3+>, Cu<2+>, Co<2+>, Ni<2+> and Zn<2+>. The method of the invention makes use of the solubility product difference that the solubility product of iron sulfide or manganese sulfide is far larger than that of the iron sulfide or manganese sulfide of heavy metal ions sulphide, so as to lead to the displacement reaction of the iron sulfide or manganese sulfide and the heavy metal ions in water and remove the heavy metal ions transformed into sulphide from water. The invention does not need solid-liquid separation, has low residual metal concentration in water and wide application ...

Production method of water-based attapulgite conductive paint

The invention discloses a production method of a water-based attapulgite conductive paint. The technical scheme of the invention is characterized in that the production method comprises the following steps: stirring and mixing the ingredients of the water-based attapulgite conductive paint evenly to obtain a mixture; and grinding the mixture in a sanding machine to obtain a semi-finished product,performing vacuum degassing technological treatment on the semi-finished product, and canning to obtain the finished product of the water-based attapulgite conductive paint. The water-based attapulgite conductive paint consists of pasty attapulgite clay, pure acrylic emulsion, a polyaniline/attapulgite nanometer conductive composite, polyethylene glycol, propandiol butyl ether, ethylene glycol, polyoxypropylene glycerin ether and deionized water. The pasty attapulgite clay, polyaniline/attapulgite nanometer conductive composite and pure acrylic emulsion selected by the invention have the advantages ...

Concave-convex bar stone clay-trihydrate alumina/iron nano composite adsorbing agent, preparation and applications

A composite adsorbent of attapulgus clay-aluminum hydroxide/iron nano-scale and a preparation method and application thereof are provided. The composite adsorbent is characterized in that prepared by loading aluminum hydroxide or mixture of hydroxides of aluminum and iron on the surface of attapulgus mineral, the aluminum hydroxide or the mixture of hydroxides of aluminum and iron has a content of 5-50wt% in the adsorbent; and the content of aluminum hydroxide in the mixture is not lower than that of iron hydroxide. The composite adsorbent has high adsorption capacity to P, As and F in water, and can be used for deep dephosphorization treatment of waste water from domestic sewage treatment plants, dephosphorization of eutrophic water bodies and treatment of high-As or high-F ground water.

Internal combustion heating moving-bed type biomass pyrolysis liquefying apparatus

The invention discloses an internal combustion heating movable-bed biomass-pyrolysis liquefaction device which includes a reactor (7); the inside of the reactor is provided with an internal combustion pipeline (5); both the inlet and the outlet of the internal combustion pipeline (5) are arranged outside the reactor (7); a hopper (1) is arranged above the reactor (7); a blanking control valve (2) is arranged on the hopper (1); a rotary shaft (6) is arranged in the center of the reactor (7); conical hoppers (4) are arranged on the rotary shaft (6); conical material dividing umbrellas are arranged between the conical hoppers (4); the material inlet of the hopper (1) is arranged above the conical hoppers (4); a pyrolysis gas outlet (20) is arranged on the reactor (7); the bottom part of the reactor (7) is provided with a slag discharge opening (14); a cyclone separator (23) is connected on the gas pipeline of the pyrolysis gas outlet (20); the flue gas outlet of the cyclone separator (23) ...

Compound of high-whiteness clay and preparation method thereof

The invention discloses a compound of high-whiteness clay and a preparation method thereof. The preparation method is as follows: firstly adding titanium tetrachloride solution into clay slurry to dissolve out the developing elements in the clay in the form of ions; secondly, adding phosphoric acid water solution to load the phosphate precipitation and titanium phosphate precipitation of the developing elements on the surface of the clay; and finally adding silicate solution or aluminate solution to ensure generated silica or alumina to compound the clay once again to obtain the high-whiteness clay. The invention has low cost, simple operation and less environmental pollution.

Method for controlling lake eutrophication by eliminating river or aqueduct pollution

The invention relates to a method for eliminating the river or the ditch pollution to control the lake eutrophication. The invention is characterized in that a water treatment unit is arranged on the cross section of each small river flowing into a lake or a ditch, the water treatment unit comprises a mud puddle which is excavated on a river bed of the cross section of each small river and the ditch, a flocculation reaction section is arranged on the upstream side of the mud puddle, a chemical feeding mechanism and an oxygen increasing section are respectively arranged on the upstream side of the flocculation reaction section, the contaminant in the river water is transformed into solid matter in the water treatment unit through a biological method and/or a chemical method, and the substrate sludge in the mud puddle and the water surface floating matter in the water treatment unit are removed regularly, therefore the contaminant can be shifted away from the rivers or the ditches. The invention ...

Organic modification method for attapulgite stone and uses of organic modified attapulgite stone

The invention discloses a method for organically modifying attapulgite, which is characterized in that: attapulgite clay and glucose are taken as raw materials to prepare an attapulgite/carbon nano composite material by a hydro-thermal method, and the composite material is to load 10 to 20 mass percent amorphous carbon containing -CH functional groups on the surface of an attapulgite crystal. The surface of the material is rich in the -CH functional groups, and has organophile property. Compared with attapulgite green ore, the composite material improves the rate for removing organic pollutant phenol in wastewater by more than 2 to 3 times. The method has mild conditions for organically modifying the attapulgite and simple process; and the obtained attapulgite contains hydrocarbon functional groups, has higher capacity of adsorbing the organic pollutants such as the phenol in water, and can be used for advanced treatment on the organic pollutants in the water or organic advanced processing ...

Low-temperature selective catalytic reduction denitration catalyst and preparation method thereof

The invention discloses a low-temperature selective catalytic reduction denitration catalyst and a preparation method thereof, wherein the catalyst takes an attapulgite as a carrier to load nano-composite materials of manganese oxide nano-particles; the structure thereof is as follows: manganese oxide particles with the particle diameter of less than 20nm are loaded on the rod-shaped crystal surface of the attapulgite with the diameter of 40-50nm; one or more types from iron, copper and nickel are added as an additive; and calculated according to the mass percentage of manganese, the content of the manganese oxide in the catalyst is 0.1-20. The preparation method comprises the steps of: firstly extruding, drying and crushing the attapulgite clay, and then preparing attapulgite clay powderinto suspension liquid; adding acid solution to wash and remove carbonate impurities, adding manganese salt, and then adding alkali solution for stirring so as to lead the manganese ion to be hydrolyzed ...

Concave-convex bar stone clay-trihydrate alumina/iron nano composite adsorbing agent, preparation and applications

A composite adsorbent of attapulgus clay-aluminum hydroxide/iron nano-scale and a preparation method and application thereof are provided. The composite adsorbent is characterized in that prepared by loading aluminum hydroxide or mixture of hydroxides of aluminum and iron on the surface of attapulgus mineral, the aluminum hydroxide or the mixture of hydroxides of aluminum and iron has a content of 5-50wt% in the adsorbent; and the content of aluminum hydroxide in the mixture is not lower than that of iron hydroxide. The composite adsorbent has high adsorption capacity to P, As and F in water, and can be used for deep dephosphorization treatment of waste water from domestic sewage treatment plants, dephosphorization of eutrophic water bodies and treatment of high-As or high-F ground water.

Internal combustion heating rotation conical biomass gasification furnace

The invention provides an internal combustion heating rotation conical biomass gasification furnace which is characterized in that the furnace body is internally provided with two concentric cones, wherein the external cone is a rotation cone and the internal cone is a fixed cone; the top of the rotation cone is connected with a material cylinder at the lower section; the top of the fixed cone is communicated with a smoke gas pipeline; the bottom end surface of the fixed cone is closed and the lower part thereof is tangentially connected with a combustion pipeline; the side wall of the furnace body is arranged as jacket structure; the jacket comprises a high-temperature resistance furnace wall, a combustion gas pipeline, a heat preservation layer and an external wall of the gasification furnace sequentially from inside to outside; the airflow passage in which the combustion gas is led out from the gasification furnace is that the combustion gas is led to the bottom port of the combustion ...

Preparation method and application of attapulgite clay dephosphorization adsorbent

The invention relates to a preparation method and application of attapulgite clay dephosphorization adsorbent, wherein the preparation method is characterized by comprising the following steps: selecting attapulgite clay ore with the attapulgite content being more than 60 percent, stockpiling and homogenizing, then adjusting the water content of ore to be 40-50 percent by weight, and cutting and extruding by an extruder to form laminar materials; airing or drying the laminar materials, then crushing into powder and granules with different grain diameters; respectively roasting the granules at300-500 DEG C to obtain attapulgite clay dephosphorization adsorption granules with different particle grades; roasting the powder for 0.5-2 hours at 300-500 DEG C to obtain attapulgite clay phosphorus adsorption powder; or pelleting the powder to form granules, then roasting to obtain attapulgite clay dephosphorization adsorption granules. The invention provides a low-cost and high-efficiency absorption ...

Mineral composite material for removing lake endogenous pollution and use thereof

The invention discloses a mineral composite material for eliminating internal pollution of lakes and application thereof. The composite material is characterized in that the composite material is prepared by the following steps: natural plaster, anhydrite or industrial waste residues taking plaster as a main component and limonite ores or sulfuric acid cinders or hematite ores or a material which contains iron with the weight percentage higher than 20 percent, are taken as raw materials and are blended and mixed to obtain a mixture, the mol ratio of S to Fe is between 20 to 1 and 1 to 3 in the mixture, and the mixture is ground into powder which passes through a sieve with meshes of between 10 and 200; and the powder is added into the treated water body according to the adding amount of between 50 and 1,000g/m<2>. Aiming at the problem that serious internal pollution exist in water bodies of lakes, rivers and landscapes, the invention provides a material and a method for passivating and ...

Internal combustion type heating rotating cone type biomass pyrolysis liquefaction device

The invention relates to an internal combustion type heating rotating cone type biomass pyrolysis liquefaction device. The device is characterized in that two concentric cones are arranged in a reactor, the outer cone is a rotating cone, and the inner cone is a fixed cone; a charging barrel is sectionally arranged into an upper section charging barrel and a lower section charging barrel, the upper part of the rotating cone is connected with the lower section charging barrel, and the upper section charging barrel is communicated with a spiral feeding mechanism; the upper part of the fixed coneis communicated with a flue gas pipeline; the end surface at the bottom part of the fixed cone is closed, and the lower part of the fixed cone is tangentially connected with a burning pipeline; a porous filter tube is arranged in the reactor, a reactor is led out form the other end of the porous filter tube, and the reactor is communicated with a cyclone dust collector positioned outside the reactor ...

Water treatment method for instant synthesis of laminated bis-hydroxide

The invention discloses a method and device for purifying tap water to drinking water, wherein the method comprises carrying out magnetic treatment to the tap water, then proceeding photo-catalytic purification treatment to the magnetized tap water by utilizing a filtration reaction bed, finally fulfilling higher level purification on the final filter layer through applying ultraviolet light catalyst and photocatalyst, thus meeting the quality standard of drinkable water.

Method for producing inorganic macromolecule flocculant polymerization iron aluminum chloride

The invention discloses a process using an inorganic polymer flocculating agent polymerizing aluminum chloride and iron chloride, which is characterized in that, add alkaline matter in acidated waste liquor which is produced in the process that concavo-convex rod stone and clay produce floridin, stir the solution, adjust pH of solution, heat and polymerize solution, then fully stir solution to make reaction, thereby generating an inorganic polymer flocculating agent polymerizing aluminum chloride and iron chloride. The applicable pH range is wider, and the treatment effect is better than other flocculating agent in common usage.

Method for restoring mine environment

Method for removing impurities from attapulgite clay ores

The invention discloses a method for removing impurities from attapulgite clay ores, which is characterized by being used for pretreating the attapulgite clay ores by using weathering and screening or freeze thawing and screening combined processes. In the invention, the attapulgite clay ores are screened to remove impurities by using different weather resistance properties of various ores without crushing the attapulgite clay ores. The method provided by the invention is simple and has low energy consumption and low cost.

以凹凸棒石粘土生产纳米棒状活性二氧化硅的方法

The production process of nano rod-like active silica is one acid dissolving process with attapulgite and clay as material. The positive effects of the present invention include elimination of high temperature alkali dissolving process, reduced material consumption and lowered production cost. Compared with traditional technological process, the nano rod-like active silica product of the present invention has ever high physical and chemical characteristics, including original concentration, dispersive performance and shape features. The present invention has wide application value.

Production process of nano rod-like active silica with attapulgite and clay

Low-temperature selective catalytic reduction denitration catalyst and preparation method thereof

The invention discloses a low-temperature selective catalytic reduction denitration catalyst and a preparation method thereof, wherein the catalyst takes an attapulgite as a carrier to load nano-composite materials of manganese oxide nano-particles; the structure thereof is as follows: manganese oxide particles with the particle diameter of less than 20nm are loaded on the rod-shaped crystal surface of the attapulgite with the diameter of 40-50nm; one or more types from iron, copper and nickel are added as an additive; and calculated according to the mass percentage of manganese, the content of the manganese oxide in the catalyst is 0.1-20. The preparation method comprises the steps of: firstly extruding, drying and crushing the attapulgite clay, and then preparing attapulgite clay powderinto suspension liquid; adding acid solution to wash and remove carbonate impurities, adding manganese salt, and then adding alkali solution for stirring so as to lead the manganese ion to be hydrolyzed ...

Method for increasing methane production efficiency in organic waste anaerobic process

The invention discloses a method for increasing methane production efficiency in organic waste anaerobic process. The method is characterized in that powder containing no less than 15% of free ferric iron oxides is added into an anaerobic biochemical system to be uniformly blended, wherein the anaerobic biochemical system produces methane by utilizing organic wastes; and ferric ions released when microbes reduce the ferric iron oxides in the anaerobic process can promote the activity of anaerobic bacteria such as methane bacteria and the like, thus increasing the production rate and yield of methane by utilizing organic wastes. The method can be widely used for increasing the methane production rate and yield of an energy utilization system for biogas production of municipal domestic waste, agriculture product processing wastes, excess sludge of sewage treatment plants, feces of intensifying raising farms and the like and improves the utilization rate of renewable energy sources of organic ...

Application of iron sulphide ores and method for adsorbing trace phosphor in water by using iron sulphide ores

The invention discloses application of iron sulphide ores and a method for adsorbing trace phosphor in water by using the iron sulphide ores. With respect to the application of the iron sulphide ores, the iron sulphide ores are used as an adsorbing material for adsorbing trace phosphor in water, and an application method comprises the steps of: crushing the iron sulphide ores, sieving to obtain granules with the grain diameter of 0.1-1mm or adding a binder for granulation to obtain the granules with the grain diameter of 0.1-1mm, filling the granules to form a filter column, injecting water with phosphorous mass concentration of lower than 3ppm into the filter column, controlling the flow velocity of a filter liquid to be 0.1-6m/h, and collecting filtrate. By means of the invention, the phosphorous content in the water is decreased to be below 0.1ppm from 0.5-3ppm, so that the phosphorous concentration of drained domestic sewage is decreased to a level within a phosphorous concentration ...

Internal combustion heating moving-bed type biomass pyrolysis liquefying apparatus

The invention discloses an internal combustion heating movable-bed biomass-pyrolysis liquefaction device which includes a reactor (7); the inside of the reactor is provided with an internal combustion pipeline (5); both the inlet and the outlet of the internal combustion pipeline (5) are arranged outside the reactor (7); a hopper (1) is arranged above the reactor (7); a blanking control valve (2)is arranged on the hopper (1); a rotary shaft (6) is arranged in the center of the reactor (7); conical hoppers (4) are arranged on the rotary shaft (6); conical material dividing umbrellas are arranged between the conical hoppers (4); the material inlet of the hopper (1) is arranged above the conical hoppers (4); a pyrolysis gas outlet (20) is arranged on the reactor (7); the bottom part of the reactor (7) is provided with a slag discharge opening (14); a cyclone separator (23) is connected on the gas pipeline of the pyrolysis gas outlet (20); the flue gas outlet of the cyclone separator (23) is ...

Styrene acrylic emulsion-paraffin-attapulgite composite envelope slow-release nitrogen fertilizer and preparation method thereof

The invention discloses a styrene acrylic emulsion-paraffin-attapulgite composite envelope slow-release nitrogen fertilizer and a preparation method thereof, wherein in the composite envelope slow-release nitrogen fertilizer, an inner layer envelope is formed on the surface of urea by styrene acrylic emulsion and attapulgite clay powder; and an outer envelope is formed on the surface of the innerlayer envelope by paraffin. In the preparation method, the preparation of the styrene acrylic emulsion-paraffin-attapulgite composite envelope slow-release nitrogen fertilizer is finished by twice envelops, wherein, in the primary envelope, the styrene-acrylic emulsion is used as an envelope agent, and the attapulgite clay powder is used as an anti-caking slow-release agent; the urea particles sprayed with the styrene-acrylic emulsion are packaged and dried by using the attapulgite clay powder; in the secondary envelope, the paraffin used as an additive is heated, melted, and sprayed on the surface ...

Method for treating heavy metal-containing acidic waste water and recycling heavy metal with biomass fixed bed

The invention discloses a method for treating acidic waste water containing heavy metal and reclaiming the heavy metal through a biomass fixed bed, which is characterized in that dry solid biomass capable of being decomposed by microbes is granulated and filled into a container with a supporting layer and a water distributing device so as to form a fixed bed microbe reactor; sewage disposal plant sludge containing sulfate reducing bacteria is taken as the source of microbe bacteria on the fixed bed, and the microbes are cultured, proliferated and acclimated to adapt to the environment of the biomass filler fixed bed through the backflow circulation of the outputted water or taking ferrous sulfate aqueous solution as the inputted water; acid effluent containing heavy metallic ions is led into the fixed bed for direct filtration; and when the water filtering speed can not meet the preset requirements, the operation is stopped, substances in the fixed bed are taken out, the heavy metal is ...

Biological matter pyrolysis gasifying detarring catalyst and preparing method

Attapulgite clay-Ni/Fe nano composite material, preparation method and applications thereof

An attapulgite clay-Ni/Fe nano composite material, a preparation method and applications thereof are characterized in that the attapulgite clay is taken as the raw material; metallic nickel and/or metallic iron particles with the diameter less than 20nm are loaded on the surface of attapulgite rhabdolith with the diameter between 40 and 50nm; the preparation method is that the attapulgite clay isprepared into suspension liquid, then the suspension liquid is hydrolyzed with iron salt and nickel salt and loaded on the surface of attapulgite crystal in the precipitation form of hydroxide, and finally the composite material is prepared through washing, dehydration, forming, drying and hydrogen reduction and calcination. With a nano structure, the composite material has low activation energy,high catalytic activity and strong resistance to carbon deposit, and can be applied to catalytic pyrolysis and purification of thermal gas and tar of a biomass gasification furnace and the catalytic pyrolysis ...

Magnetic granule and attapulgite nanometer composite material, and hydrolytic method for preparing its ferrous salts

Mineral composite material for removing lake endogenous pollution and use thereof

The invention discloses a mineral composite material for eliminating internal pollution of lakes and application thereof. The composite material is characterized in that the composite material is prepared by the following steps: natural plaster, anhydrite or industrial waste residues taking plaster as a main component and limonite ores or sulfuric acid cinders or hematite ores or a material whichcontains iron with the weight percentage higher than 20 percent, are taken as raw materials and are blended and mixed to obtain a mixture, the mol ratio of S to Fe is between 20 to 1 and 1 to 3 in the mixture, and the mixture is ground into powder which passes through a sieve with meshes of between 10 and 200; and the powder is added into the treated water body according to the adding amount of between 50 and 1,000g/m<2>. Aiming at the problem that serious internal pollution exist in water bodies of lakes, rivers and landscapes, the invention provides a material and a method for passivating and ...

Material for purifying arsenate and chromate in drinking water and preparation method and application thereof

The invention relates to a material for purifying arsenate and chromate in drinking water and a preparation method and application thereof. The material is characterized in that: the material is sulfide of iron, manganese or zinc; the content of the sulfide in the material is not less than 50 weight percent; the content of arsenic is not more than 0.5 weight percent; and the concentration of the arsenate and the chromate in the drinking water is between 0.01 and 5 mg/L. The material for purifying the drinking water has the advantages of wide sources of raw materials, low cost and high adsorption activity, and capacity of being repeatedly used.

Attapulgite clay-Ni/Fe nano composite material, preparation method and applications thereof

An attapulgite clay-Ni/Fe nano composite material, a preparation method and applications thereof are characterized in that the attapulgite clay is taken as the raw material; metallic nickel and/or metallic iron particles with the diameter less than 20nm are loaded on the surface of attapulgite rhabdolith with the diameter between 40 and 50nm; the preparation method is that the attapulgite clay is prepared into suspension liquid, then the suspension liquid is hydrolyzed with iron salt and nickel salt and loaded on the surface of attapulgite crystal in the precipitation form of hydroxide, and finally the composite material is prepared through washing, dehydration, forming, drying and hydrogen reduction and calcination. With a nano structure, the composite material has low activation energy, high catalytic activity and strong resistance to carbon deposit, and can be applied to catalytic pyrolysis and purification of thermal gas and tar of a biomass gasification furnace and the catalytic pyrolysis ...

Rosin-attapulgite-paraffin composite coated slow-release nitrogen fertilizer and preparation method thereof

The invention discloses a rosin-attapulgite-paraffin composite coated slow-release nitrogen fertilizer and a preparation method thereof, wherein the slow-release nitrogen fertilizer is prepared by the steps of: forming an inner coating on the surface of urea by a rosin binder and attapulgite clay powder, and forming an outer coating on the surface of the inner coating by paraffin. The preparationmethod of the rosin-attapulgite-paraffin composite coated slow-release nitrogen fertilizer is finished by coating for twice, wherein the first coating comprises the steps of: with the attapulgite clay powder as a slow-release coating agent and rosin and absolute ethyl alcohol molten liquid as a binder, packing and drying the urea particles sprayed with the rosin binder by the attapulgite clay powder; and the second coating comprises the steps of: heating to melt the paraffin which serves as an additive, and spraying the molten paraffin on the surface of the product obtained during the first coating ...

Method for in situ restoring groundwater azotate pollution with corn stalk

The invention relates to a method for remedying the nitrate pollution of underground water in situ with maize straws, which is characterized in that maize straws or a maize straw hydrolysate serving as a denitrification carbon source and flora-enriched liquid rich in denitrifying bacteria florae are added in nitrate polluted underground water to remove nitrate nitrogen from underground water through bio-denitrification. The method realizes the harmless use of biomass maize straws and remedies the nitrate pollution of underground water effectively.

Catalytic cracker of biomass tar

Prepn of laminated dihydrogen oxide and its derivative quasi-periclase

Internal combustion type heating rotating cone type biomass pyrolysis liquefaction device

The invention relates to an internal combustion type heating rotating cone type biomass pyrolysis liquefaction device. The device is characterized in that two concentric cones are arranged in a reactor, the outer cone is a rotating cone, and the inner cone is a fixed cone; a charging barrel is sectionally arranged into an upper section charging barrel and a lower section charging barrel, the upper part of the rotating cone is connected with the lower section charging barrel, and the upper section charging barrel is communicated with a spiral feeding mechanism; the upper part of the fixed cone is communicated with a flue gas pipeline; the end surface at the bottom part of the fixed cone is closed, and the lower part of the fixed cone is tangentially connected with a burning pipeline; a porous filter tube is arranged in the reactor, a reactor is led out form the other end of the porous filter tube, and the reactor is communicated with a cyclone dust collector positioned outside the reactor ...

Method for preparing nano iron by taking iron oxide as raw material and application of nano iron

The invention discloses a method for preparing nano iron by taking iron oxide as a raw material and application of the nano iron. The method is characterized by comprising the following step: preparing the nano metal iron by reducing iron oxide through hydrogen at the temperature of 450-850 DEG C. The nano iron prepared by the method has high removing rate on arsenic, hexavalent chromium and nitrate nitrogen in water and can be widely used for the processing and the in-situ remediation of underground water containing the arsenic, the hexavalent chromium and the nitrate nitrogen.

Ni/Fe nanometer composite material as well as preparation method and application thereof

The invention discloses a Ni/Fe nanometer composite material as well as a preparation method and application thereof. The Ni/Fe nanometer composite material is characterized in that metallic nickel granules with the grain diameter being less than 20 nm are loaded on the surface of needle-like metallic iron with the diameter of 50-100 nm. The composite material has nanometer structures, low activation energy and high catalytic activity, and can be applied to the catalytic cracking and purifying of thermal gas tar in a biomass gasifier and the catalytic cracking of various other organic matters.

Method for preparing water-based attapulgite conductive coating

The invention discloses a method for preparing a water-based attapulgite conductive coating. The key point of the technical scheme is that the method comprises the following steps of: before construction, ensuring that the surface of the substrate is firm, and dust, acid-base substances , and greasy dirt are avoided on the surface of the substrate; during construction, coating a layer of water-based acrylic emulsion primer which has high adhesion on the surface of the substrate, drying and then rubbing down to obtain a primer layer; and uniformly coating the water-based attapulgite conductive coating on the primer layer, drying and rubbing down to obtain the conductive coating. The water-based attapulgite conductive coating consists of pasty attapulgite clay, pure acrylic emulsion, a polyaniline/ attapulgite nano conductive composite material, polyethylene glycol, propylcnc glycol monobutyl ether, glycol, polyoxypropylene glycerol ether and deionized water. By using the prepared conductive ...

Method for remedying nitrate pollution in groundwater by adopting Klebsiella sp. DB-2

A method for remedying nitrate pollution in groundwater by adopting Klebsiella sp. DB-2 is characterized by taking soluble carbonaceous organic materials as carbon sources and the purified Klebsiella sp. DB-2 as a bioremediation strain. The method comprises in-situ remediation and ex-situ remediation. The method of the invention can be effectively used for bioremediation of the nitrate pollution in the groundwater.

Production method of water-based attapulgite conductive paint

The invention discloses a production method of a water-based attapulgite conductive paint. The technical scheme of the invention is characterized in that the production method comprises the following steps: stirring and mixing the ingredients of the water-based attapulgite conductive paint evenly to obtain a mixture; and grinding the mixture in a sanding machine to obtain a semi-finished product, performing vacuum degassing technological treatment on the semi-finished product, and canning to obtain the finished product of the water-based attapulgite conductive paint. The water-based attapulgite conductive paint consists of pasty attapulgite clay, pure acrylic emulsion, a polyaniline/attapulgite nanometer conductive composite, polyethylene glycol, propandiol butyl ether, ethylene glycol, polyoxypropylene glycerin ether and deionized water. The pasty attapulgite clay, polyaniline/attapulgite nanometer conductive composite and pure acrylic emulsion selected by the invention have the advantages ...

Method for processing industrial waste acid solution and preparing drying agent by using dolomite-containing attapulgite clay

Material and method for processing water containing heavy metal ion

The invention relates to a material containing heavy metal ions and a handling method thereof, which is characterized in that the material focuses on iron sulfide or manganese sulfide, and by weight percentage, the sulfur content in the material is more than 10 percent; the iron sulfide and manganese sulfide include FeS, MnS, FeS2, Fe3S4, Fe2S3 and Fe1-xS; the heavy metal ions include Cd<2+>, Hg<2+>, Ag<+>, Pb<2+>, Cr<3+>, Cu<2+>, Co<2+>, Ni<2+> and Zn<2+>. The method of the invention makes use of the solubility product difference that the solubility product of iron sulfide or manganese sulfide is far larger than that of the iron sulfide or manganese sulfide of heavy metal ions sulphide, so as to lead to the displacement reaction of the iron sulfide or manganese sulfide and the heavy metal ions in water and remove the heavy metal ions transformed into sulphide from water. The invention does not need solid-liquid separation, has low residual metal concentration in water and wide application ...

Ni/Fe nanometer composite material as well as preparation method and application thereof

The invention discloses a Ni/Fe nanometer composite material as well as a preparation method and application thereof. The Ni/Fe nanometer composite material is characterized in that metallic nickel granules with the grain diameter being less than 20 nm are loaded on the surface of needle-like metallic iron with the diameter of 50-100 nm. The composite material has nanometer structures, low activation energy and high catalytic activity, and can be applied to the catalytic cracking and purifying of thermal gas tar in a biomass gasifier and the catalytic cracking of various other organic matters.

Material for purifying arsenate and chromate in drinking water and preparation method and application thereof

The invention relates to a material for purifying arsenate and chromate in drinking water and a preparation method and application thereof. The material is characterized in that: the material is sulfide of iron, manganese or zinc; the content of the sulfide in the material is not less than 50 weight percent; the content of arsenic is not more than 0.5 weight percent; and the concentration of the arsenate and the chromate in the drinking water is between 0.01 and 5 mg/L. The material for purifying the drinking water has the advantages of wide sources of raw materials, low cost and high adsorption activity, and capacity of being repeatedly used.

Preparation and regeneration method for water treatment defluoridation filter material based on natural mineral

The invention discloses a preparation and regeneration method for water treatment defluoridation filter material based on a natural mineral. The invention is that natural bauxite ores are used as raw materials, are roasted at high temperature at two stages after crushing, screening and pretreatment through hydrochloric acid, and finally are cooled to obtain the defluoridation filter material. After the defluoridation filter material loses efficacy, the defluoridation filter material can be reused after inorganic aluminum salt solution is used for soaking the defluoridation filter material. The invention has the advantages that the water treated by using the defluoridation filter material can fully satisfy the standard that fluorine content in drinking water is lower than 1.0mg/L, the source of the raw materials is wide, the preparation is simple and convenient, the cost is low and the application prospect is good.

Composite material for reducing greenhouse gases discharge and application thereof

Provided is a composite material for reducing greenhouse gases discharge and application thereof. The composite material is made by mixing raw material being rich of sulphates and ferric iron oxide or hydroxides, the molar ratio of S and Fe in the composite material is from 20:1 to 1:3, the composite material is a particle or powder solid matter. By means of adding the composite material particle or powder into a circumstance being rich of organic matter and anaerobic microorganism such as a pool, a cityscape water, a river, a ditch, a paddy field, an artificial wetland, a cienaga, a lake, a sea and a refuse landfill, it is capable of restraining the activity of methane bacteria, translating unstable organic carbon into inorganic carbonate and reducing greenhouse gases discharge with the action of the composite material and the microbe.

Method for in situ restoring groundwater azotate pollution with corn stalk

The invention relates to a method for remedying the nitrate pollution of underground water in situ with maize straws, which is characterized in that maize straws or a maize straw hydrolysate serving as a denitrification carbon source and flora-enriched liquid rich in denitrifying bacteria florae are added in nitrate polluted underground water to remove nitrate nitrogen from underground water through bio-denitrification. The method realizes the harmless use of biomass maize straws and remedies the nitrate pollution of underground water effectively.

Low-density zeolite biological aerated filter filling and preparation method thereof

The invention discloses a low-density zeolite biological aerated filter filling and a preparation method thereof. The filling is a low-density zeolite biological aerated filter filling which is prepared through adopting foamed plastics particles as inner cores and adopting natural zeolite particles as shells. The raw materials of the filling comprise zeolite ore, cement and the foamed plastics particles. The preparation method is characterized by: crushing the zeolite ore; mixing the crushed zeolite ore and the cement to obtain a mixed material; then adding the mixed material to the foamed plastics particles while spraying water to enable the mixed material to be coated on the surface of the foamed plastics particles to obtain the low-density zeolite biological aerated filter filling. The low-density zeolite biological aerated filter filling provided by the present invention has high porosity, and has a pore size of 0.01-0.1 mm, such that the microorganisms can deeply enter into the inner ...

Internal-combustion heating type biomass gasification furnace

层状双氢氧化物及其衍生物似方镁石的制备方法

The present invention features that by using industrial acid waste water and inorganic salt in waste liquid as material and through inorganic chemical reaction, laminated dihydroxide (LDH) is synthesized; and through high temperature calcination, the derivative quasi-periclase is produced. The present invention is one new waste water processing technology and new LDH synthesizing technology for processing waste water and preparing LDH simultaneously. The prepared LDH or derivative quasi-periclase may be used as water purifying agent for processing waste water and drinking water. The present invention realizes the comprehensive waste treatment and resource utilization.

Method for performing catalytic pyrolysis on tar in biomass gasifier

The invention discloses a method for performing catalytic pyrolysis on tar in a biomass gasifier, which comprises the following steps: placing a de-tarring catalyst and a biomass into the biomass gasifier in a weight part ratio of 0.1:100 to 5:100 to perform a tar catalytic pyrolysis reaction; controlling a pyrolysis temperature in the biomass gasifier between 700 and 1,000 DEG C; and contacting a biomass pyrolysis gas obtained after gasification in the biomass gasifier with the de-tarring catalyst at a high temperature so as to carry out the catalytic pyrolysis on the tar. Therefore, the method for performing the catalytic pyrolysis on the tar in the biomass gasifier reduces the content of the tar in a gas produced by the gasifier, increases the yield and lowers the cost, and is simple in operating steps and environmentally-friendly.

Internal combustion heating rotation conical biomass gasification furnace

The invention provides an internal combustion heating rotation conical biomass gasification furnace which is characterized in that the furnace body is internally provided with two concentric cones, wherein the external cone is a rotation cone and the internal cone is a fixed cone; the top of the rotation cone is connected with a material cylinder at the lower section; the top of the fixed cone iscommunicated with a smoke gas pipeline; the bottom end surface of the fixed cone is closed and the lower part thereof is tangentially connected with a combustion pipeline; the side wall of the furnace body is arranged as jacket structure; the jacket comprises a high-temperature resistance furnace wall, a combustion gas pipeline, a heat preservation layer and an external wall of the gasification furnace sequentially from inside to outside; the airflow passage in which the combustion gas is led out from the gasification furnace is that the combustion gas is led to the bottom port of the combustion ...

Attapulgite-argentum nanometer composite antibiotic material and preparation method thereof

Attapulgite-silver nano composite antiseptic material and its preparation method is provided, which characterized in that exchangeable silver ion and nano silver particle exist on the surface of nano bar-shaped attapulgite.It is prepared that attapulgite clay act with silver reagent under the presence of surfactant and organic reductant. Silver particle with grain size being several nanometer has large activity, can continuously slowly release antiseptic silver ion. Nano silver particle bind fast with attapulgite,so attapulgite-silver nano composite antiseptic material has good antiseptic property,can be widely used in chemical fiber, plastics etc.