PROCESS FOR EFFICIENTLY TREATING REFINERY WASTEWATER BASED ON MICROALGAE MEMBRANE BIOREACTOR (MMBR)

The present disclosure belongs to the field of wastewater treatment, and in particular, relates to a process for efficiently treating refinery wastewater based on a microalgae membrane bioreactor (MMBR). The treatment process provided by the present disclosure includes an efficient refinery wastewater treatment system formed by coupling a chlorella and an MBR composed of a polytetrafluoroethylene (PTFE) hollow fiber micro-filtration membrane. The system can fully utilize the advantages of deep degradation of the MBR to the organic carbon, and efficient removal of the algae to such nutrients as nitrogen and phosphorus to implement high-quality effluent discharge. Meanwhile, with photosynthesis, the algae generate 02 available for aerobic bacteria, which can compensate the defect of high energy consumption of the MBR to some extent, effectively reduce the membrane pollution, and implement stable and effective operation of the novel membrane biotreatment technology. According to a large number ...

Preparation method of graphene-composited ion exchange resin for membrane-free electrodeionization system

OF THE DISCLOSURE The present disclosure belongs to the field of preparation methods of ion exchange resins, and relates to a preparation method of a graphene-composited ion exchange resin for a membrane-free electrodeionization system. The ion exchange resin is prepared by mixing a graphene-composited polystyrene-divinylbenzene copolymer and a sulfonating agent for reaction at 60-150°C, cooling to 30-50°C, and conducting post-treatment. The ion exchange resin is suitable for wastewater treatment and high-purity water preparation in membrane-free electrodeionization systems. The present disclosure has a greatly-improved exchange capacity and conductivity compared with conventional resins, and improves the performance of membrane-free electrodeionization, thereby reducing the regeneration voltage and energy consumption of the membrane-free electrodeionizationsystem.

Particle electrode for photocatalytic three-dimensional electrode/electro-Fenton system and preparation method thereof

The invention discloses a particle electrode for a photocatalytic three-dimensional electrode/electro-Fenton system and a preparation method thereof. The particle electrode is prepared from activated-carbon loaded bimetallic codoping P25. The preparation method comprises the following steps: preprocessing activated carbon to obtain ultrasonic-nitric acid modified activated carbon; preparing bimetallic codoping P25, and then loading the ultrasonic-nitric acid modified activated carbon and the bimetallic codoping P25 to obtain the particle electrode used for the visible-light photocatalytic three-dimensional electrode/electro-Fenton system. The preparation method is simple, and the obtained particle electrode has a visible-light photoelectrocatalytic effect and can rapidly and efficiently degrade organic pollutants. The particle electrode can obtain an obvious visible-light photocatalysis and three-dimensional electrode/electro-Fenton synergetic treatment effect at the visible-light photocatalytic ...

Preparation method of indene modified alpha-pinene resin

The invention relates to a preparation method of an indene modified alpha-pinene resin. The method comprises the steps of: (1) adding a solvent into a reaction kettle, controlling the temperature at 50-15 DEG C, evenly mixing a catalyst and the other part of the solvent, adding the mixture into the reaction kettle, stirring, then dropwise adding a mixture of alpha-pinene and indene, and reacting for 1-6 h to obtain a polymerization solution; (2) washing the polymerization solution to the pH of 7, standing, and taking an upper layer oil phase to obtain a resin liquid; (3) carrying out reduced pressure distillation on the resin liquid by to remove part of the solvent, and then stripping the concentrated liquid by vapor steam to obtain modified alpha-pinene resin. The invention has the advantages of simple process, low cost and little by-products; currently the indene segment fraction obtained by distillation cutting of ethylene cracking by-product C9 fraction contains a lot of indene, and ...

Rare-earth doped manganese-lithium phosphate anode material and preparation method thereof

The invention discloses a rare-earth doped manganese-lithium phosphate anode material for lithium ions and a preparation method thereof, and aims to solve the problem that the electrochemical performance of the conventional manganese-lithium phosphate anode material cannot meet operating requirements. The rare-earth doped manganese-lithium phosphate anode material is prepared from the raw materials of lithium source compounds, manganese source compounds, phosphorus source compounds and rare-earth dopants, and the rare-earth doped manganese-lithium phosphate anode material is expressed by a molecular formula LiTxMn1-xPO4, wherein T is a rare-earth doped element, and x is more than 0 and is less than or equal to 0.05. After rare-earth doping, the electron conductivity and the lithium ion migration rate of the rare-earth doped manganese-lithium phosphate anode material are improved considerably, and sequentially the capacity and the circulating performance of the anode material are improved ...

METHOD FOR PREPARING HYDROPHILIC POLYTETRAFLUOROETHYLENE HOLLOW FIBER MICROFILTRATION MEMBRANE

The present disclosure belongs to the technical field of material surface modification, and in particular, relates to a method for preparing a hydrophilic polytetrafluoroethylene (PTFE) hollow fiber microfiltration membrane. The present disclosure hydrophilically modifies the PTFE microfiltration membrane with the polyvinyl alcohol (PVA). PVA macromolecules can penetrate into nodes of the PTFE microfiltration membrane and are tightly combined with the PTFE through the physical winding effect, such that a compact hydrophilic modification layer is formed on the surface of the membrane to improve the hydrophilicity of the membrane; and then, by soaking in the glutaraldehyde and drying, the PVA molecules are fully cross-linked on the surface of the PTFE hollow tube, to make the hydrophilicity more stable, and lasting. 17930857_1 (GHMatters) P116901.AU ...

NOVEL CATHODE MATERIAL FOR MAGNESIUM ION BATTERY AND FABRICATING METHOD THEREOF

... (FIG. 2) The present disclosure provides a novel cathode material for magnesium ion batteries. The material is a silicate-doped cathode material for magnesium ion batteries having a molecular formula of Mgix)CaxCo(i-y)RySiO 4, where x = 0.005-0.05, y = 0.005-0.10, and R is one of rare earth elements Sm, Eu, and Yb. The cathode material for magnesium ion batteries has an initial reversible capacity of greater than 120 mAh/g and excellent cycle performance. -1/2 ~,1.5 0) 0 30 60 90 120 150 Capacity/(mAh-g- 1) u-..*_ *U**-m~~ < 80 >60 Co 40 0 5 10 1s 20 Cycle number ...

Cathode material of sodium ion battery and preparation method thereof

OF THE DISCLOSURE The present disclosure provides a cathode material of a sodium ion battery, where the cathode material has a chemical formula of NaFeo.sMno. 5 S04F. The present disclosure further provides a preparation method of the cathode material of a sodium ion battery, where the cathode material NaFeo.Mno. 5S04F, is obtained by heating MnSO4 -H20, FeSO4 -H20 and NaF in a sealed state for reaction in the presence of an auxiliary agent. The cathode material of a sodium ion battery of the present disclosure has an initial reversible capacity up to 130 mAh/g, a relatively desirable cycle performance and widespread use prospects. The present disclosure has a simple preparation method, is easy to control, and is beneficial to realize large-scale industrial production. 1/1 DRAWINGS S4800 8.;kV 8.1mm x50.0k SE(U) 1.00um FIG. 1 -U- Charge mci -4Discharge 1c~ 50 100 0 0 5 10 15 20 Number of cycles FIG. 2

MAGNESIUM ION BATTERY CATHODE MATERIAL DOPED AT MAGNESIUM SITE AND FABRICATING METHOD THEREOF

OF THE DISCLOSURE The present disclosure relates to a magnesium ion battery cathode material doped at magnesium site and a fabricating method thereof, and belongs to cathode materials for rechargeable batteries in energy materials. The molecular formula of the cathode material is Mgi-x)ANiSiO 4, where A is one of doping elements Ca, Sr, and Ba, and x is equal to 0.001 to 0.08. The fabricating method is as follows: A magnesium source compound, a doping element compound, and a nickel source compound are accurately weighed in an atomic molar ratio, Mg: A: Ni = (1-x): x: 1, mixed with an appropriate amount of deionized water, ball-milled, mixed well, taken out, dried, and sintered to obtain a solid powder. Tetraethyl orthosilicate (TEOS) is weighed in an atomic molar ratio, Ni: Si = 1:1, the solid powder, and the solid powder, the TEOS, and an appropriate amount of citric acid are in absolute ethanol solvent thoroughly in a stainless steel tank to obtain a gel. Subsequently, the gel is mixed and ball-milled with a carbon source compound, and sintered in an inert atmosphere for hours to obtain a carbon-coated magnesium ion battery cathode material Mgi. xAxNiSiO4. ABSTRACT DRAWING FIG. 2 -1/2 2.0 CO) 0 0.5 D 20 40 60 80 100 Capacity/(mAh-g 1 ) FIG. 1 50 nm FIG. 2 17931120_1 (GHMattes) P116900AU

Dielectric barrier discharge plasma-fenton-like-photocatalysis method for degrading organic matter

The invention discloses a dielectric barrier discharge plasma-fenton-like-photocatalysis method for degrading organic matter. According to the method, dielectric barrier discharge plasma, Fe3O4 fenton-like and TiO2 photocatalysis are integrated to form a dielectric barrier discharge plasma-fenton-like-photocatalysis system for degrading the organic matter. The method specifically comprises the first step of preparing Fe3O4-TiO2 catalysts, and the second step of adding the Fe3O4-TiO2 catalysts into a dielectric barrier discharge plasma system to form the dielectric barrier discharge plasma-fenton-like-photocatalysis system for degrading the organic matter. According to the method, the dielectric barrier discharge plasma technology, the Fe3O4 fenton-like technology and the TiO2 photocatalysis technology are combined, the home-made Fe3O4-TiO2 catalysts are applied to the dielectric barrier discharge plasma-fenton-like-photocatalysis system, the organic matter is degraded according to the characteristics ...

ULTRAFILTRATION MEMBRANE HAVING HYDROPHILIC AND ANTIBACTERIAL PROPERTIES AND PREPARATION METHOD THEREOF

OF THE DISCLOSURE The present disclosure relates to a high-flux ultrafiltration membrane having hydrophilic and antibacterial properties and a preparation method thereof, and belongs to the technical field of polymeric membrane materials. The ultrafiltration membrane is prepared by dissolving a membrane-forming polymer and a pore-forming agent into an organic solvent to obtain a casting solution, forming a membrane with a phase transformation method and storing the membrane in a wet state; and the casting solution is composed of the following components by mass percent: 16-20% of the polymer, 1-8% of povidone iodine (PVPI) and 72-83% of the organic solvent. The present disclosure uses the PVPI as the pore-forming agent and the antibacterial agent. During membrane formation, the PVPI is dissolved in the non-organic solvent to form a great number of pores in the membrane. And meanwhile, owing to the complexiation between the PVPI and the polymer, a part of the PVPI is migrated to the surface of the membrane during the phase transformation, such that the membrane achieves the antibacterial property. As a part of the PVPI is lost during membrane filtration, the membrane may be immersed into the PVPI aqueous solution for a certain time to restore the PVPI content on the surface of the membrane. The method is simple and practicable, and can be industrially applied to protein concentration or wastewater biotreatment. ABSTRACT DRAWING - FIG 3 10 17931816_1 (GHMatters) P116903.AU - 1/2 FIG 1 SPI 4% FWI l Number of waves (cm-) FIG 2 17931803_1 (GHMatters) P116903.AU

Sodium manganese fluorosilicate-based cathode material for sodium ion battery and preparation method thereof

The present disclosure discloses a sodium manganese fluorosilicate-based cathode material for a sodium ion battery, having a molecular formula of Na3AXMnix)SiO4F, where A is a doped metal ion selected from the group consisting of Mg2, Ca2, Sr2+ , Fe2, C02+, Ni2+, Cu2+ or Zn, and x=0 0.05. The sodium manganese fluorosilicate-based cathode material has high reversible capacity, and relatively desirable cycle performance. The present disclosure further discloses a preparation method of the sodium manganese fluorosilicate-based cathode material for a sodium ion battery. 140 -- * 0 2 4 6 8 10 Number of cycles ...

Method for preparing cathode material of high capacity tin-nickel composite oxides lithium ion battery

The invention relates to a preparation method of cathode material of a high-capacity tin-nickel composite oxide lithium-ion battery, comprising the following steps: (1) soluble sodium stannate and nickel sulfate are weighted and respectively dissolved for preparing the solution; the two solutions are matched and mixed according to atomic ratio of Sn/Ni with 0.5-2 and are stirred ceaselessly; the produced precipitate is filtered, washed 3-7 times with distilled water and is fully dried in a vacuum baking oven, thus obtaining solid power predecessors; (2)the temperature of the predecessors is raised to 280-1200 DEG.C in a muffle furnace by taking 1-30 DEG.C/min of heating-up speed under the atmosphere that the predecessors are protected by flowing inert gases, then the temperature is preserved for 0.5-8 hours; after the heat preservation is finished, the predecessors are cooled to room temperature with the furnace, thus obtaining the cathode material. The method has simple preparation process ...

Tin base alloy anode material of lithium ion battery and preparation method thereof

The invention relates to a tin base alloy anode material of a lithium ion battery and a preparation method thereof. The material comprises a component of a metallic tin antimony niobium alloy. The preparation method comprises the following steps: mixing metallic tin, metallic antimony and metallic niobium; under the shield of inert gas, adding a ball milling control agent, and fully ball milling and mixing evenly; and then annealing under the shield of inert gas to obtain the material. The material of the invention has high capacity, good cycle performance, simple preparation method and low cost, and is suitable for industrial production.

Copper tin antimony ternary alloy anode material of lithium ion battery and preparation method thereof

The invention provides a copper tin antimony ternary alloy anode material of a lithium ion battery and a preparation method thereof. The method comprises the steps: firstly preparing salt solution of copper, tin and antimony; evenly mixing according to the molar ratio of Cu: Sn: SB=6:5:5; adding stabilizing agent; adding strong reducing agent into mixture; and preparing nano-grade copper tin antimony Cu6Sn5Sb5 ternary alloy anode material. The preparation method has simple technology and low cost, wherein the prepared copper tin antimony Cu6Sn5Sb5 ternary alloy anode material has even grains, high lithium-storing capacitance and good cycle performance.

Preparation method for spherical lithium ferric phosphate used as lithium ion battery anode material

The invention relates to a preparation method for spherical lithium ferric phosphate used as a lithium ion battery anode material. The preparation method comprises the following steps: respectively dissolving a ferric iron compound and a phosphorus source compound in deionized water to prepare a water phase solution A and a water phase solution B, and adding the solution A and the solution B slowly into organic oil to form a water-in-oil system C; washing and drying the water-in-oil system C after precipitation and centrifugal separation to obtain a spherical ferric phosphate predecessor; mixing the ferric phosphate predecessor, a lithium source compound and a carbon source compound, and calcining the mixture for 1 to 24 hours at 550 to 850 DEG C under the protection of inert gas so as to obtain the spherical lithium ferric phosphate anode material with high bulk density and the tap density of 1.5 to 2.2 g/cm3. The preparation process has simple operation and easy control, and facilitates ...

Turbidimeter extinction structure and method

The invention belongs to the technical field of turbidity meters, and particularly relates to a turbidity meter extinction structure and method. The extinction structure is arranged in the turbidity meter and comprises a first polygonal outer shell, a first inner shell is arranged in the first outer shell, an interlayer is arranged between the first inner shell and the first outer shell, the extinction structure further comprises an inlet allowing light to enter, an extinction layer arranged in the extinction structure is arranged on the periphery of the inlet, and a semi-transparent mirror is further arranged on the first inner shell. The method comprises the following steps: arranging a light source emitter and a photoelectric receiver in the turbidity meter, wherein the light source emitter and the photoelectric receiver are arranged in one or two sealing elements; an extinction structure is arranged opposite to the light source emitter; a photoelectric receiver is arranged between the ...

Marine cabinet and cabinet group

The utility model provides a marine cabinet and a cabinet group, and relates to the technical field of mechanical equipment, the marine cabinet comprises a cabinet body, two groups of vertical beams and a plurality of cross beams arranged in the cabinet body, and a base fixed below the cabinet body; a guide rail for supporting and fixing the network equipment is also arranged between the verticalbeams in each group; the two vertical beams located at the two ends of each set of vertical beams are positioning vertical beams, and each positioning vertical beam is connected with network equipmentthrough a fixing piece. A damping layer is arranged between the base and the cabinet body, and the base is fixedly connected with the ship body. According to the marine cabinet, the vertical beams are fixed through the cross beams; the network equipment is fixed on the cabinet through the vertical beams and the guide rails, the cabinet is fixed on the ship body through the base, and the vibrationdegree ...

Preparation method for copper-tin-antimony ternary alloy cathode material of lithium ion battery

The invention relates to a preparation method for a copper-tin-antimony ternary alloy cathode material of a lithium ion battery. The preparation method comprises the following steps of: mixing metal copper, tin and antimony in a molar ratio of 6:5:5; adding a ball mill control agent; and fully carrying out ball milling under the protection of inert gases to obtain the copper-tin-antimony Cu6Sn5Sb5 ternary alloy cathode material. The preparation method has simple process and low cost, and the prepared copper-tin-antimony Cu6Sn5Sb5 ternary alloy cathode material has high lithium storage capacity and good cycle performance.

Preparation method of precious metal loaded Fe3O4 nanospheres

The invention relates to a preparation method of precious metal loaded Fe3O4 nanospheres, comprising the following steps: dispersing Fe3O4 nanoparticles in a water solution dissolved with rhamnolipid in an ultrasonic way, reacting in stirring or ultrasonic condition for 1-4 hours at the temperature of 25-40 DEG C, separating a product by using a neodymium-iron-boron strong magnet, then cleaning with ultrapure water and ethanol, drying at 60-80 DEG C to obtain a Fe3O4@rhamnose core-shell structure nanoparticle, then dropwise adding a precious metal saline solution and mixing for 40-80min, adding a water solution containing a reducing agent to react for 40-80 DEG C, separating a product by using the neodymium-iron-boron strong magnet, cleaning with ultrapure water and ethanol, and drying at 60-80 DEG C so as to obtain a precious metal loaded Fe3O4 nanosphere catalyst. According to the invention, the preparation process is simple, conditions are easy to control and mild, and industrial expanded ...

Method for treating ultrafiltration-concentrated solution generated in waste leachate membrane treatment process

The invention relates to a method for treating an ultrafiltration-concentrated solution generated in a waste leachate membrane treatment process. The method comprises the steps of treating an ultrafiltration-concentrated solution by using electric Fenton, and regulating the pH value to 2-5 and the concentration of ferrous ions to 0.1-1.5mmol/L; and controlling the aeration rate at 1.0L/min and the current density at 15-35mA/cm<2>, and continuously reacting for more than 1 h. According to the method, the traditional high conductivity and high Cl<-> concentration conditions in the ultra-filtered and concentrated solution are sufficiently utilized, the thought of treating wastes by using wastes is implemented, and an electric Fenton method is adopted, so that the treatment effect is good, the efficiency is high, the current efficiencies of COD and NH3<->N are high, and the energy consumption is low; and the concentrations of COD and NH3<->N in the treated concentrated solution are effectively ...

Carbon-coated antimony-zinc alloy material of cathode for lithium-ion battery and method for preparing same

The invention relates to carbon-coated antimony-zinc alloy material of the cathode for a lithium-ion battery and a method for preparing the same. The method for preparing the carbon-coated antimony-zinc alloy material of the cathode for the lithium-ion battery comprising the following steps: mixing antimony oxide, zinc oxide and organic carbon source material, fully grinding the mixture into the ball shape, mixing the ground material evenly, putting the mixture into a tube furnace, heating the mixture to 650-1100 DEG C under the protection of the inert gas, preserving the temperature of the mixture for 1-6h, and gradually cooling down the mixture to the room temperature to obtain the carbon-coated antimony-zinc alloy material of the cathode for the lithium-ion battery. The molar ratio of the antimony to the zinc in the carbon-coated antimony-zinc alloy is 1:2 to 2:1, and the content of the carbon is 1-8 percent (by weight) of the antimony-zinc alloy. The carbon-coated antimony-zinc alloy ...

Visible-light photoelectric-Fenton method for efficiently degrading organic substances

The invention discloses a visible-light photoelectric-Fenton method for efficiently degrading organic substances. Visible light, TiO2 photocatalysis and electric-Fenton are integrated to constitute a visible-light photoelectric-Fenton system for degrading the organic substances. The method comprises the following steps: preparing a TNTs electrode and a Fe2O3/TNTs electrode; and constituting the visible-light photoelectric-Fenton system by using the TNTs electrode or Fe2O3/TNTs electrode as the anode and graphite or activated carbon fibers as the cathode, and degrading the organic substances. By combining the TiO2 photocatalysis, electrochemical oxidization and Fenton oxidization techniques and introducing visible light to constitute the visible-light photoelectric-Fenton system, the self-made TNTs electrode and Fe2O3/TNTs electrode are used in the visible-light photoelectric-Fenton system, thereby implementing efficient degradation of organic substances under visible light.

Preparation method of electrocatalytic reduction halogenated organic matter cathode material

The invention discloses a preparation method of an electrocatalytic reduction halogenated organic matter cathode material. The method comprises the following steps: preprocessing a foam metal electrode; producing a Fe/foam metal electrode through an electrodeposition process with graphite as an anode, foam metal as a cathode and an iron-containing mixed solution as an electrolyte; and producing a Pd/Fe/foam metal electrode through an impregnation deposition process with H2PdCl4 as a deposition solution. In the invention, Fe nanoparticles are introduced into a Pd/foam metal electrode, so the Pd load capacity is reduced, and the synergistic effect of Pd and Fe nanoparticles improves the reduction ability of halogenated organic matters; and a surfactant is introduced into the Pd/Fe/foam metal electrode to well disperse the Pd and Fe nanoparticles, so the effective contact area of the Pd and Fe nanoparticles with the halogenated organic matters is improved, thereby the produced electrode has ...

Method for preparing styrene modified C5 petroleum resin

The invention relates to a method for preparing styrene modified C5 petroleum resin, which comprises the following steps of: mixing an m-pentadiene enriched C5 fraction raw material A and a raw material B of crude styrene uniformly in a mass ratio of 1: 0.06-2.5; and feeding a solvent and a catalyst into a reaction kettle with a stirrer in advance, then performing feeding reaction on the prepared raw materials in different modes to obtain polymer solution, washing the polymer solution to be neutral by using alkali and water, removing the solvent from a rectifying tower, removing oligomer and the solvent from a stripping tower by extraction, and obtaining the styrene modified C5 petroleum resin by granulation. The method has simple preparation process and low process cost compared with common m-pentadiene resin production; and the prepared modified petroleum resin has the advantages of shallow color, controllable softening point and the like, improves the compatibility with EVA, SIS, rubber ...

Ship alarm return system and method

The invention provides a ship alarm return system and method. The ship alarm return system comprises a ship-based subsystem and a shore-based subsystem which are in communication connection with each other, the shore-based subsystem comprises a first video core module and a first video service module which are connected with each other; the ship-based subsystem comprises a second video core module, video capturing equipment and intelligent identification equipment which are connected with one another; the video capture device collects a first video image of a ship and sends the first video image to the intelligent recognition device, if abnormal information exists, alarm information is generated and sent to the first video service module for display, and the first video service module generates a corresponding operation instruction according to the alarm information and sends the operation instruction to the intelligent recognition device. And the first video image is sent to the video ...

Method for preparing magnetic BiOBr with ultraviolet-visible light response

The invention relates to a method for preparing magnetic BiOBr with ultraviolet-visible light response. The method comprises the following steps: ultrasonically dispersing magnetic nano-particles in ultrapure water, adding a surfactant, stirring at room temperature for 4-16 hours, separating a product in an applied magnetic field, cleaning by using ultrapure water and ethanol, drying at the temperature of 60-80 DEG C, thereby obtaining surfactant-modified magnetic nano-particles; adding hexadecyl trimethyl ammonium bromide, uniformly stirring, dropwise adding an alcohol solvent dissolved with bismuth nitrate pentahydrate, continuously stirring, reacting at the constant temperature of 100-150 DEG C for 5-10 hours, separating the product in an applied magnetic field, cleaning by using ultrapure water and ethanol, drying at the temperature of 60-80 DEG C, thereby obtaining the magnetic BiOBr microspheres with core-shell structures. According to the method disclosed by the invention, the preparation ...

Method for preparing 4-aminonaphthalene-2,6-dicarboxylic acid

Thioglucose compound and preparation method therefor

Method for preparing (3-bromo-2-fluorophenyl) methanamine

Improved method for preparing 2,5-disubstituted-1,4-terephthaldehyde

Method for preparing (benzene-1,3,5-triyl) triacetonitrile