241results about How to "High removal rate" patented technology

The invention discloses a method and a system for efficiently removing a diaphragm of a non-liquid-injected roll core and accurately separating a positive pole piece and a negative pole piece. The method comprises the following steps: S1, carrying out primary slice dissociation; s2, primary winnowing and coarse removal; s3, secondary slicing and refined hydrolysis; s4, secondary winnowing and fine removal; s5, size grading; and S6, adaptive color selection. According to the method, traditional shredding is replaced by grading slicing, structural lamination of the materials in the treatment process is fundamentally avoided, the high removal rate of the diaphragms and high-precision sorting of pole piece materials in different forms are sequentially achieved, and the purity and process efficiency of overall recycled products are remarkably improved.

The utility model discloses an adjustable clamp for ultrasonic vibration auxiliary low-voltage micro-arc machining, and relates to the technical field of ultrasonic vibration auxiliary machining. The clamp comprises a three-jaw chuck, an ultrasonic vibration device and a nylon outer shell. A threaded hole is formed in the tail end of the three-jaw chuck and used for being connected with the ultrasonic vibration device and the nylon outer shell. The ultrasonic vibration device is arranged in the nylon outer shell and comprises an ultrasonic transducer and an ultrasonic amplitude-change pole, and the ultrasonic transducer is formed by stacking piezoelectric ceramics and electrode plates and is fixed through a front end cover and a rear end cover; the nylon outer shell is of a square-outside and round-inside structure, the bottom of the nylon outer shell is matched with the rear end cover, and an opening is connected with the three-jaw chuck to provide insulation protection for the whole device. By combining low-voltage micro-arc machining with ultrasonic vibration, efficient and high-precision machining is achieved, and the ultrasonic vibration machine has the advantages of being compact in structure, high in stability, integrated in insulation design, adjustable in vibration direction and the like, and is suitable for precision machining of materials difficult to machine in the fields of aerospace, military industry, medical treatment and the like.

The utility model relates to the field of sewage treatment, in particular to a composite three-phase separator module for preventing sludge calcification and an anaerobic reactor thereof, which comprise an outer separation module, an inner separation module, a water outlet module and a backflow module, according to the composite three-phase separator module provided by the utility model, a remarkable technical breakthrough is realized through structural innovation and process optimization. The traditional IC reactor is limited by the arrangement mode of a three-phase separator, and the effective sludge level height is less than 50% of the total height of the reactor, so that the upper volume is idle. The composite three-phase separator module is integrated at the top of the reactor, and the height of a sludge layer is increased to 70%-80% of the total height of the reactor through the double-layer separation design of the outer separation module and the inner separation module, so that the microbial biomass and the treatment load are greatly improved. Meanwhile, methane is released through forced collision of a V-shaped separation plate of the outer separation module, so that the content of carbon dioxide in reflux liquid is reduced by more than 80%, and calcium carbonate crystallization conditions are effectively destroyed by combining forced mixing of inlet water with a circulating pump.

The application discloses a dilution pretreatment detector for ion chromatography detection of underground water and a method thereof, and relates to the technical field of water quality detection.The detector comprises a supporting shell, a dilution liquid storage cylinder is arranged in the supporting shell, an underground water storage cylinder is arranged in one side of the supporting shell, and a stirring dilution cylinder is connected to the bottom of the underground water storage cylinder and the dilution liquid storage cylinder.A series of structures are arranged, which can effectively avoid impurities from accumulating in the filter screen and the cylinder, greatly improve the impurity removal rate, provide high-purity samples for subsequent ion chromatography detection, reduce the risk of pipeline blockage and instrument damage, ensure that the sample concentration after dilution fully meets the ion chromatography detection requirements, significantly improve the accuracy and stability of the detection results, greatly improve the continuity and work efficiency of the underground water sample pretreatment, adapt to batch sample detection requirements, facilitate deep maintenance and component replacement, shorten equipment maintenance time, and reduce use and maintenance costs.

The invention relates to an ethanol upgrading device and method, the device is used for upgrading ethanol containing a small amount of ethyl acetate, the device comprises a low-pressure rectification unit, a pumping unit and a high-pressure rectification unit which are connected in sequence, a variable-pressure rectification principle is adopted, azeotrope composition is changed only through a variable-pressure mode, reasonable process parameters are matched, and the quality of ethanol is improved. The purified ethanol is extracted from the low-pressure rectification unit, and the ethanol with higher ethyl acetate content is extracted from the high-pressure rectification unit, so that a large amount of ethanol is prevented from being evaporated to the high-pressure rectification unit, the energy consumption is obviously reduced, the production cost is reduced, and the economic benefit is improved.

The application relates to the technical field of organic wastewater treatment, in particular to a preparation method and application of an ozone catalyst, and the preparation method and application of the ozone catalyst, the method comprising the following steps: (1) ball milling, (2) melting and (3) staged cooling; the catalyst can promote the reaction between ozone molecules and refractory organic matters, effectively reduces the refractory COD in water, improves the COD removal rate, improves the ozone utilization rate, and achieves the purpose of improving the sewage treatment efficiency.

The application discloses a method for degrading organic pollutants in water by using molybdenum disulfide activated potassium permanganate, which comprises sequentially adding molybdenum disulfide powder and potassium permanganate into water containing trace organic pollutants, treating for 10-90 minutes, and then removing unreacted potassium permanganate and molybdenum disulfide powder through coagulation, sedimentation and filtration in sequence; when the concentration of the trace organic pollutants in the water is 0.1-5 muM, the adding amount of the potassium permanganate is 50-300 mu mol / L, and the adding amount of the molybdenum disulfide is 25-150 mg / L; when the concentration of the trace organic pollutants in the water is greater than 5 muM, the adding amount of the potassium permanganate is 150-500 mol / L, the adding amount of the molybdenum disulfide is 50-200 mg / L, and the adding ratio of the molybdenum disulfide to the potassium permanganate is 1:(0.4-0.8). The method can enhance the degradation capacity of the potassium permanganate by adding the molybdenum disulfide, improve the removal rate of the organic pollutants, reduce the adding amount of the potassium permanganate agent, finally reduce the cost of water treatment, and effectively alleviate the chroma problem caused by a high adding amount of the potassium permanganate.

This invention belongs to the field of wet electronic chemicals technology, specifically relating to a method for preparing electronic-grade hydrogen peroxide. The method includes the following steps: adjusting the concentration of raw hydrogen peroxide, and then filtering it sequentially through a reverse osmosis membrane, a modified cation exchange resin, an anion exchange resin, and a mixed ion exchange resin to obtain electronic-grade hydrogen peroxide. The modified cation exchange resin used is modified based on conventional cation exchange resin through pore expansion and grafting, optimizing the spatial matching of pore structure and functional sites. This achieves passivation of metal ions, enhanced adsorption capacity, and improved oxidation resistance, as well as a deep synergistic effect of these three effects. Ultimately, it achieves the dual goals of efficient purification and stable operation of the resin in the hydrogen peroxide system. The resulting electronic-grade hydrogen peroxide can reduce the content of single impurity metal ions to below 5 ppt, meeting the requirements of SEMI G5 standards, and can be directly applied to high-end manufacturing fields such as semiconductor wafer cleaning.

The utility model belongs to the technical field of mine gushing water treatment, and relates to pre-oxidation integrated treatment equipment for removing heavy metals in mine gushing water. Comprising a pre-oxidation bin, a metal alkali environment precipitation reaction unit, a flocculation mixing reaction tank and a plate type filler precipitation unit, the flocculation mixing reaction tank comprises a first flocculation mixing reaction unit and a second flocculation mixing reaction unit, and an oxygen supply ring pipe and an oxygen releaser are arranged at the bottom of the pre-oxidation bin; a matched dosing device is integrated on the side wall of the treatment tank, and the dosing device comprises an alkali liquor dosing system, a PAC dosing system and a PAM dosing system; stirrers are arranged in the metal alkali environment precipitation reaction unit, the first flocculation mixing reaction unit and the second flocculation mixing reaction unit; pre-oxidation treatment is carried out before alkaline precipitation reaction and coagulation-flocculation reaction, so that valence of metal ions in the mine inflow water is increased, and then alkaline precipitation reaction is carried out on the metal ions, so that the removal rate of the metal ions and the stability of precipitates can be improved.

This application discloses an automatic sauerkraut filling machine in the field of food packaging technology, including a base, a support column, a top seat, and multiple filling components. The support column is connected between the base and the top seat. The base has a notch, and a packaging machine is connected to the notch. The packaging opening of the packaging machine is located at the notch, and a packaging bag is connected to the packaging opening. A motor is located at the bottom inner part of the base, and the output shaft of the motor is connected to the support column. A turntable is connected to the top of the base and is connected to the support column. Multiple filling components are all located on the turntable. Multiple drive components are connected to the support column to drive the filling components from the turntable through the support column to the bottom of the top seat. Each filling component includes a slider, a connecting column, and an electric telescopic rod. The slider is connected to the turntable and is connected to the drive components. A locking component for fixing sauerkraut is connected to the slider. The connecting column is connected to the top of the slider, and the electric telescopic rod is connected to the top of the connecting column.

This invention provides a method for preparing a foamed copper-based composite organic compound layer catalytic material, comprising the following steps: forming 8-hydroxyquinoline molybdenum (Mo(C)) on the surface of a foamed copper matrix. 9 H 6 NO) 4 Organic compound layer; 8-hydroxyquinoline molybdenum (Mo(C)) 9 H 6 NO) 4 The organic compound layer is converted into phthalimide 8-hydroxyquinoline molybdenum (C). 8 H 4 NO 2 ) 2 (C 9 H 6 NO) 2 ; Phthalimide 8-hydroxyquinoline molybdenum Mo(C) 8 H 4 NO 2 ) 2 (C 9 H 6 NO) 2 Conversion to copper phthalimide / 8-hydroxyquinoline molybdenum Cu(C) 8 H 4 NO 2 ) 2 / Mo(C 9 H 6 NO) 2 The foamed copper-based composite organic compound layer catalytic material is finally obtained. The catalytic material prepared by the method of this invention can effectively improve the Faradaic efficiency, ammonia selectivity, production rate, and nitrate removal rate of the electrochemical reduction of nitrate to ammonia technology.

The application discloses a wet oxidation catalyst, which comprises the following raw materials in percentage by weight: 0.1-2% noble metal, 1-10% graphene-based material, and the rest is a carrier, wherein the carrier is modified titanium dioxide, specifically, a rare earth-transition metal-oxygen vacancy-mesoporous three-dimensional gradient titanium dioxide carrier. The application aims at solving the technical problem of poor stability of the catalyst.

The application discloses a kind of eluent and its preparation method and application, preparation method includes: adding potassium methoxide methanol solution to the trimethylolpropane in molten state, after stirring, vacuumizing, then droping glycidol monomer, after reaction, add methanol, dry, obtain hyperbranched polyglycerol ether;Add carbonyl imidazole to the N,N-dimethylformamide solution of saturated fatty acid, after stirring and mixing, drop to the N,N-dimethylformamide solution of hyperbranched polyglycerol ether, reaction is heated in nitrogen atmosphere, after reaction, the product is treated, obtain temperature-sensitive hyperbranched polyglycidol ether eluent.The eluent prepared in the application can greatly reduce the treatment cost of elution waste liquid while efficiently removing heavy metals.

The application discloses a high-concentration sulfate radical acid mine water treatment method based on acid-resistant SRB biological cathode, which comprises the following steps: after the acid mine water is filtered through a grid, the acid mine water is fed into an adjusting tank; the wastewater in the adjusting tank is fed into a biological membrane electrochemical device to perform an electrochemical reaction; in an anode chamber, Fe 2+ in the wastewater is oxidized into Fe 3+ and releases electrons; in a cathode chamber, the acid-resistant SRB bacterial membrane loaded on the surface of a carbon felt electrode utilizes the transmitted electrons to reduce SO4 2‑ into S 2‑ ; CO2 micro-bubbles are fed into the liquid in the cathode chamber to react with S 2‑ to generate sulfur precipitate, and the mixed solution after the reaction is fed into a cyclone separator to realize gas-solid separation; Fe 3+ in the water in the anode chamber generates Fe(OH)3 precipitate through a hydrolysis reaction, the Fe(OH)3 precipitate is mixed with sodium silicate, and is calcined to be converted into alpha-Fe2O3 with magnetism. The method can effectively remove SO4 2‑ and recover iron mud.

The application discloses a heat treatment device and method for photovoltaic module recycling, and belongs to the field of photovoltaic module recycling, and comprises a heat treatment room, a vibrating platform, a lifting mechanism, a clamping mechanism and a fixing seat. The photovoltaic module can be placed on the fixing seat, the heat treatment room can heat the area where the fixing seat is located, and the heating temperature of the heat treatment room can make the EVA adhesive film become a solid jelly-like film. The adsorption mechanism can adsorb the glass layer or the back plate of the photovoltaic module and drive the glass layer or the back plate to move upwards. The EVA adhesive film in the photovoltaic module is adjusted to a solid jelly-like film by low temperature, the vibrating platform causes intense relative movement between the back plate and the battery plate and between the battery plate and the glass layer, thereby breaking the EVA adhesive film in the middle, and the glass layer, the battery plate and the back plate are disassembled. After disassembly, the high-pressure blowing mechanism is used to remove the EVA adhesive film remaining on the glass layer, the battery plate and the back plate. In the whole process, the EVA adhesive film is not dissolved and harmful gas is not generated.

The invention belongs to the technical field of semiconductor material polishing, and particularly relates to an alkaline polishing solution for a silicon carbide substrate as well as a preparation method and application. According to the alkaline polishing solution for the silicon carbide substrate, the colloidal SiO2 nano abrasive and the alpha-Al2O3 nano abrasive are used as compound abrasive, the particle size of the alpha-Al2O3 nano abrasive is controlled to be smaller than that of SiO2 nano abrasive in the colloidal SiO2 nano abrasive, the pH is adjusted to be 9.5-13.0, and components such as ferrite, oxidizing agent hydrogen peroxide and sodium pyrophosphate are added; bulges and defect layers on the surface of the silicon carbide substrate can be quickly removed in the polishing process, and Rad can be efficiently obtained; the alkaline polishing solution is a high-performance alkaline polishing solution for the silicon carbide substrate, and the technical problem that in the prior art, the polishing solution is low in performance can be solved.

The application provides a method and device for treating wastewater by combining a suspended filler floating bed and a soil infiltration system, and the method comprises the following steps: S1, breeding wastewater is treated by the suspended filler floating bed after passing through a hydrolysis tank, and effluent is treated in a sedimentation tank, and wastewater of the suspended filler floating bed is returned to the suspended filler floating bed for secondary treatment; S2, wastewater of the sedimentation tank is returned to the hydrolysis tank; and S3, effluent of the sedimentation tank is introduced into a soil underground infiltration system. The system provided by the application is beneficial to further strengthening the effects of denitrification, phosphorus removal and removal of suspended solids, and solves the problems of low dissolved oxygen content of influent and wastewater in the system, which is not conducive to the growth of nitrifying bacteria, and low effective volume utilization rate. In the use process, the filler does not need to be replaced, and mechanical aeration equipment does not need to be added, and the system has the advantages of low investment cost, no need to add chemical agents for treatment, obvious effect, not easy to breed mosquitoes, simple operation and management, and beautification of the environment, and has remarkable ecological and economic benefits for promoting deep purification of breeding wastewater.

The utility model provides a kind of waste gas purification collection device of production workshop, including purification tank, the top and bottom of purification tank are all fixedly connected with conical cover, and the tapering end of two described conical cover is all set in the direction of the axial direction of the away from purification tank, purification assembly is provided on the purification tank, the outer wall of the purification tank is fixedly connected with three support legs, the outer wall of the bottom conical cover of the purification tank is fixedly connected with waste gas feeding pipe being connected with its inner cavity, one-way valve is fixedly installed on the waste gas feeding pipe, the side of the purification tank is provided with collection tank, gas collecting pipe is installed between the top gas outlet of the conical cover of collection tank and the purification tank. Waste gas is scattered by diffusion fan blade, and the extension path design of helical flow lag pipe is matched, the problem that waste gas is rapidly rising in dense bubble in traditional device, short contact time is improved, the contact area and reaction length of waste gas and purification liquid are increased, and the removal rate of target pollutant is improved.

The utility model relates to a wastewater denitrification and desulfurization treatment device which is characterized in that a water distributor is arranged at the lower part of an anaerobic reaction tank of an anaerobic reactor, a three-phase separator is arranged at the upper part of the anaerobic reaction tank of the anaerobic reactor, and a stirrer is arranged on an anoxic reaction tank of an anoxic reactor; an overflow port of the anaerobic reaction tank is connected and communicated with the anoxic reaction tank, a reflux port of the anaerobic reaction tank is connected and communicated with the anaerobic reaction tank through a wastewater reflux pipe, an aerator is arranged at the bottom of an aerobic reaction tank of the aerobic reactor, the anoxic reaction tank is connected and communicated with the aerobic reaction tank, a partition plate is arranged in the settling pond, a water inlet area is arranged on one side of the partition plate, and a settling area is arranged on the other side of the partition plate. A clear liquid outlet pipe is arranged at the upper part of the inclined plate of the sedimentation tank, a communicated clear liquid return pipe is arranged at the front part of the clear liquid valve of the clear liquid outlet pipe, and the clear liquid return pipe is communicated with the anoxic reaction tank. According to the device, the sulfate radical removal rate is high, nitrate in the wastewater can be simultaneously removed while sulfate radicals in the wastewater are removed, and the equipment investment and the treatment cost are reduced.

The application provides a coalescence-adsorption coupled binary hydrophilic-hydrophobic particle deep bed oil removal process and device, and the process comprises the following steps: S1, mixed liquid mixing and adsorption; S2, first coalescence separation of the mixed liquid; S3, second coalescence separation of the mixed liquid; and S4, recycling of emulsified oil containing DOM and adsorbent. The process of the application realizes efficient purification of oil-containing sewage containing DOM and emulsified oil through the steps of adsorbent dispersion mixing and two-stage binary hydrophilic-hydrophobic particle coalescence separation, in combination with a special device; the mixing effect of the adsorbent and the sewage can be strengthened, the DOM adsorption and emulsified oil demulsification efficiency can be improved, the adsorbent recycling and water phase purification can be realized at the same time, and the problems of incomplete treatment and low efficiency of existing oil removal technologies on multi-form pollutants are solved.

This application relates to the technical field of formaldehyde treatment equipment and discloses an industrial formaldehyde production tail gas treatment device, including a mounting frame fixedly installed in the middle of the inner cavity of a spray tower. The inner cavity of the mounting frame is provided with several sets of spray components. Each spray component includes a support frame fixedly installed at the bottom of the inner cavity of the mounting frame, and a first guide element is movably sleeved inside the support frame. Simultaneously, a second guide element extending to the bottom of the support frame is movably sleeved inside the first guide element. In this industrial formaldehyde production tail gas treatment device, regarding the arrangement of the spray components and their structures, during the operation of the spray tower, as formaldehyde tail gas accumulates at the bottom of the inner cavity, the gas pressure of the formaldehyde tail gas at the bottom of the inner cavity increases accordingly, forcing the second guide element to move upwards. This allows the formaldehyde tail gas to enter the gap formed between the first guide element and the support frame, thereby effectively increasing the contact time between the formaldehyde tail gas and water.

The invention relates to a soil microorganism high-efficiency water purification filter material and a preparation process thereof, and aims to solve the problems of low removal efficiency, high cost, easiness in secondary pollution, insufficient affinity with soil microorganisms and the like of the existing microorganism filter material. The filter material is prepared by taking volcanic rock, activated carbon, bentonite and modified cellulose as main raw materials, combining the main raw materials according to a specific ratio, preparing porous particles by virtue of processes such as calcining, activating, mixing, granulating and sintering, and finally loading the porous particles by virtue of a microbial bacterial liquid. The product has a large specific surface area, good adsorption performance and high chemical stability, and can provide an excellent adhesion and growth environment for soil microorganisms. Experiments prove that the filter material can significantly improve the removal efficiency of pollutants such as COD, ammonia nitrogen and total phosphorus in sewage, and the filter material has the advantages of easily available raw materials, low cost and environmental friendliness, and is suitable for the fields of sewage treatment, ecological restoration and the like.

The application discloses a composite solid decoloring powder and a preparation method thereof, and belongs to the technical field of water treatment agent preparation. The modified nano titanium dioxide is obtained by coating titanium dioxide with 3-methyl acrylic acid sulfopropyl potassium salt grafted polydopamine. The titanium dioxide has photocatalytic effect and antibacterial property, can catalytically decompose pollutants in sewage, inhibit the breeding of bacteria in water, and can catalytically decompose free formaldehyde in dicyandiamide formaldehyde polycondensate. The modified nano titanium dioxide is loaded on phenolic resin foam, and after calcination, the nano titanium dioxide / foam carbon powder is formed. The large specific surface area and porous property of the foam carbon can increase the capture and fixation of free formaldehyde, and can synergistically accelerate the catalytic degradation of formaldehyde with the titanium dioxide. The dicyandiamide formaldehyde polycondensate grafted with castor oil is in-situ polymerized on the surface of the matrix. The castor oil grafting can significantly improve the dicyandiamide formaldehyde polycondensate, significantly increase the molecular weight, and increase the capture capacity.

The application discloses a deep-sea in-situ macro-transcriptome RNA multi-stage processing and reverse transcription stabilization method and system, relates to the technical field of deep-sea biology and marine instrument equipment, and has the following components in series in a continuous closed fluid channel: a filtration enrichment cavity, a controlled decompression unit, a program control unit and at least one multifunctional reaction cavity. A temperature control system is integrated in the multifunctional reaction cavity, at least one set of bidirectional opposite electromagnet groups is arranged on the outer side of the cavity wall of the multifunctional reaction cavity, the program control unit is used for controlling the on-off and current of the bidirectional opposite electromagnet groups, and a dynamically switchable spatial magnetic field gradient is generated in the multifunctional reaction cavity to drive magnetic microspheres in the cavity to perform at least one operation, such as adsorption and aggregation, suspension and mixing, in-situ cleaning, transfer between cavities and elution and desorption, without relying on centrifugation. All biochemical operations of the application are completed in the continuous sealed fluid channel, cross contamination of samples and external environment is eliminated, and full-automatic sample processing under a deep-sea environment is realized.

The utility model belongs to the technical field of metallurgical equipment, particularly relates to material proportioning equipment for austenitic stainless steel intergranular corrosion resistance production, and provides the following scheme aiming at the problems of insufficient proportioning precision and serious impurity residue in the background technology: the material proportioning equipment comprises a bracket, and a double-screw conveyor is arranged on the outer wall of the top of the weighing table. The double-screw conveyor is linked with the weighing platform, the weight of materials is fed back to the PLC electric control cabinet in real time, the conveying speed is dynamically adjusted, and the matching error of key elements such as Cr and Ni is reduced. The design of the material supplementing pipe and the material distributing pipe supports multi-batch trace adding, component fluctuation caused by one-time feeding is avoided, the screen can intercept large-particle impurities, the electromagnetic iron remover adsorbs metal chippings through a high-intensity magnetic field, and the impurity removal rate is increased. And the top tank and the bottom hopper are designed in a split manner, so that the screen and the electromagnetic iron remover are convenient to clean regularly, the maintenance is convenient, and continuous production is not influenced.

This invention discloses a short-range pretreatment method for lithium battery production wastewater. The method involves adjusting the pH value of the wastewater, adding persulfate and ferrous sulfate to oxidize and remove NMP, and then adding polyacrylamide to the NMP-removed wastewater for flocculation. The rate gradient of the flocculation reaction is controlled, and nano-graphite is precipitated and separated to obtain pretreated lithium battery production wastewater. This method utilizes the reaction between nano-graphite and Fe... 2+ A co-activated persulfate oxidation method was used to oxidize NMP in lithium battery production wastewater, improving the removal rate and biodegradability of NMP. Based on this, nanofiltration graphite was used for flocculation and sedimentation separation. This method utilizes nano-graphite and Fe... 2+ The co-activated persulfate oxidation method was used to oxidize NMP in lithium battery production wastewater, improving the removal rate and biodegradability of NMP; and it also improved the flocculation and sedimentation separation effect of nanofiltration graphite, shortening the process flow and reducing energy consumption.

The application discloses a system and method for treating high-concentration cyclohexane oxidation tail gas. The system comprises an adsorption / desorption module and an absorption / desorption module, and can directly treat high-concentration cyclohexane oxidation tail gas while meeting the gas emission requirements. The system has the advantages of short overall process, high cyclohexane recovery rate, reasonable energy utilization, low energy consumption and the like.

The present application relates to the field of unsaturated polymer hydrogenation, and discloses a method for removing metal catalyst in glue liquid after unsaturated polymer hydrogenation, which comprises the following steps: (1) mixing a complexing agent, an extractant and glue liquid after unsaturated polymer hydrogenation; (2) carrying out oil-water separation on the mixture obtained in step (1) under the action of a voltage of 200-2000 V / cm. The method of the present application can remove metal catalyst in glue liquid under a specific voltage, improve the removal rate of metal catalyst, improve the separation effect of oil phase and water phase, shorten the operation cycle and improve the separation efficiency. Meanwhile, the method of the present application can further reduce the amount of extractant.