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106results about How to "Stable and efficient processing" patented technology

Ionic conductive membrane for chlorine-alkali industry and preparation method thereof

The invention relates to the technical field of ionic membranes, and particularly relates to an ionic conductive membrane for a chlorine-alkali industry and a preparation method thereof. The ionic conductive membrane comprises a perfluorinated ion exchange resin base membrane, a micro-porous reinforcing material and a surface layer of a perfluorinated ion exchange resin microparticle. The perfluorinated ion exchange resin microparticle is a mixture of one or two of a perfluorinated carboxylic acid resin microparticle or perfluorinated sulfonic acid-carboxylic acid copolymer resin microparticle and a perfluorinated sulfonic acid resin microparticle, wherein the perfluorinated sulfonic acid resin microparticle accounts for 95%-50% of the percentage by mass of the mixture. The surface layer of the ionic conductive membrane has good compatibility and adhesion and maintains a good degassing effect in the whole service life of the ionic conductive membrane. An alkali metal chloride solution of which the range of concentration is wide can be efficiently and stably treated by the ionic conductive membrane in the chlorine-alkali industry, and the ionic conductive membrane is applicable for running in a zero-pole electrolytic cell under a novel high current density condition and a very excellent product purity index is achieved. The invention also provides a preparation method of the ionic conductive membrane, the process is simple and reasonable and industrial production is easily achieved.
Owner:SHANDONG DONGYUE POLYMER MATERIAL

Novel ionic conduction membrane and preparation method thereof

The invention belongs to the technical field of ionic membranes, and particularly relates to a novel ionic conduction membrane. The novel ionic conduction membrane comprises a perfluoro ion exchange resin basal membrane, a porous reinforcing material and a surface layer made of a mixture of perfluoro ion exchange resin microparticle and inorganic compound particle, wherein the inorganic compound particle is one of or a mixture of oxides, hydroxides and nitrides of IV-A groups, IV-B groups, V-B groups, iron, cobalt, nickel, chromium, manganese or boron elements; and the perfluoro ion exchange resin microparticle is a mixture of one or two of perfluoro carboxylic acid resin microparticle or perfluoro sulfonic acid carboxylic acid copolymerization resin microparticle and perfluoro sulfonic acid resin microparticle. The novel ionic conduction membrane is used for the chlorine-alkali industry and is capable of stably and efficiently treating an alkali chloride solution wide in concentration range and suitable for operation in a novel zero-polar-distance electrolytic bath under the condition of high electric current density, and the product is high in purity. The invention also provides a preparation method of the novel ionic conduction membrane, which is simple and reasonable in process and facilitates industrial production.
Owner:SHANDONG DONGYUE POLYMER MATERIAL

Electric field strengthening two-phase anaerobic reactor

The invention discloses an electric field strengthening two-phase anaerobic reactor being suitable for treating high-concentration sulfates and organic pollutant effluents. The interior of a tank body of the reactor is respectively provided with a sludge precipitation zone, an acidification reaction chamber and a methanation reaction chamber from the bottom up; the top of the tank body is provided with a gas-liquid separator; the upper side and the lower side of the acidification reaction chamber are respectively provided with a negative electrode plate and a positive electrode plate, and the negative electrode plate and the positive electrode plate are connected with a constant-current voltage source outside the tank body so as to form a constant-voltage electric field; the methanation reaction chamber and the acidification reaction chamber are separated by a sludge trapping layer; the inner edge at the top of the tank body is provided with a water outlet slot; a water outlet pipe is communicated with the water outlet slot and extends out of the tank body, and the effluent thereof can be directly discharged or recycled. The processes of the constant-voltage electric filed and the two-phase anaerobic reactor are adopted in the reactor; and the reactor adopts a sulfate reduction process which can realize that a hydrogen supply system is strengthened at constant pressure under the condition of introducing direct current. The reactor has the advantages of high volume load, high reaction speed, small occupied area, low operating cost, good treatment effect, and the like.
Owner:NANJING UNIV

Biological treatment method and treatment device for amine-containing waste water

In biological treatment of amine-containing waste water, which is organic waste water in an ultrapure water recovery system, the treatment during fluctuating conditions is stabilized and stable treatment is carried out at the start of operation, and during fluctuating load and waste water composition. A method for introducing amine-containing waste water, which is organic waste water in an ultrapure water recovery system, to a biological treatment tank to carry out biological treatment, wherein an acid is added to the biological treatment tank on the basis of the pH value of the liquid in the biological treatment tank. When amine-containing waste water, which is organic waste water in an ultrapure water recovery system, is to be biologically treated, an increase is detected in the pH of the liquid in the biological treatment tank caused by ammonia generated by amine oxidation, and an acid is added to the biological treatment tank in accordance with the pH value, whereby the liquid in the biological treatment tank can be adjusted to an optimal pH value. Therefore, stable and efficient treatment can be carried out without a reduction in the activity of the biological treatment, even during operation startup, or during fluctuating waste water composition or waste water load.
Owner:KURITA INDUSTRIAL CO LTD

Treatment process for discharging metribuzin wastewater in compliance with standard in coordination with salt recycling and running method of treatment process

The invention discloses a treatment process for discharging metribuzin wastewater in compliance with standard in coordination with salt recycling and a running method of the treatment process, and belongs to the technical field of pesticide wastewater treatment. The treatment process mainly comprises the steps of precipitation filtration, resin adsorption, pH neutralization, MVR, pH adjustment andFenton advanced oxidation. Salt recycling is conducted by steps as follows: performing evaporation crystallization and centrifugal drying to obtain refined industrial sodium sulfate. The concentration of COD in the metribuzin wastewater can be greatly reduced by resin adsorption treatment, and salt in wastewater can be further removed by MVR. Finally, Fenton advanced oxidation treatment is adopted, and effluent meets the connection standard of the park pipe network. Efficient and stable treatment of the metribuzin wastewater which contains high COD and high salt and is difficult to biologically degrade is realized, so that the metribuzin wastewater is discharged continuously in compliance with standard, and recycling of sodium sulfate in the wastewater is also realized.
Owner:江苏南大华兴环保科技股份公司

Fluorine-containing ion exchange membrane for alkali chloride electrolysis

The invention belongs to the technical field of ion exchange membranes, and relates to a fluorine-containing ion exchange membrane for alkali chloride electrolysis. The fluorine-containing ion exchange membrane comprises a fluorine-containing polymer layer with carboxylic acid type functional groups, a fluorine-containing polymer layer with sulfonic acid type and carboxylic acid type functional groups, and a fluorine-containing polymer layer with sulfonic acid type functional groups; wherein a reinforcing material is embedded in the fluorine-containing polymer layer with the sulfonic acid typefunctional group, and the reinforcing material is parallel to the fluorine-containing polymer layer with the carboxylic acid type functional group and the fluorine-containing polymer layer with the sulfonic acid type functional group and the carboxylic acid type functional group; the surface of the fluorine-containing ion exchange membrane is provided with a surface modification coating formed byion exchange resin and inorganic ions. According to the invention, the electrolytic voltage during alkali chloride electrolysis can be reduced, the defect of interlayer stripping of the multi-layer composite membrane in the application process is inhibited, and the product is suitable for running in a zero-polar-distance electrolytic cell under novel high-current density conditions.
Owner:SHANDONG DONGYUE POLYMER MATERIAL

Multifunctional bio-based composite microporous membrane and preparation method thereof

The invention discloses a multifunctional bio-based composite microporous membrane and a preparation method thereof, and belongs to the field of water treatment and purification. The multifunctional bio-based composite microporous membrane is mainly composed of a separation layer and a support layer, the separation layer is mainly prepared by mixing a nano material and an additive, and has a three-dimensional structure capable of intercepting dye small molecules; the support layer comprises a stereocomplex polylactic acid microporous membrane and noble metal nanoparticles which are loaded in the stereocomplex polylactic acid microporous membrane and have catalytic performance, so that rapid degradation of aromatic compounds in a sewage system is realized. Compared with a microporous membrane in the prior art, the multifunctional bio-based composite microporous membrane disclosed by the invention can be used for more stably and efficiently treating dye molecules and aromatic compounds in sewage under the synergistic effect of the separation layer and the support layer, and meanwhile, the multifunctional bio-based composite microporous membrane is simple in preparation process and convenient to operate, and has very important scientific and application prospects.
Owner:GUANGZHOU UNIVERSITY

Thick-thin micro aggregate 6S processing process for concrete and production line

The invention discloses a thick-thin micro aggregate 6S processing process for concrete and a production line. The thick-thin micro aggregate 6S processing process comprises the following steps: pretreating materials; performing circulatory multi-stage rough crushing and multi-stage desliming; performing circulatory multi-stage fine crushing and multi-stage powder concentrating, and preparing finesand and aggregates of different specifications and different limestone powder contents in proportion; and performing crushing and processing, and multistage winnowing, sorting and collecting on recycled dust materials. The whole sand-making production line is perfected, so that the system yield can be effectively increased, and finished product gravel aggregate quality can be effectively improved, and therefore, various grading and optimal grading of finished product gravel aggregates are realized; moreover, recycled powder waste is effectively recycled, treatment ability is strong, mountainflour grading can be precisely controlled, and mountain flour of various specifications is prepared; and the thick-thin micro aggregate 6S processing process is used for effectively improving durability and mechanical property of concrete, is low in production cost, and is efficient and energy-saving.
Owner:GUIZHOU CHENGZHI HEAVY IND SCI TECH

Method for removing aluminum of aluminum powder vanadium-removing crude titanium tetrachloride mud

The invention discloses a method for removing aluminum of aluminum powder vanadium-removing crude titanium tetrachloride mud, and belongs to the technical field of metallurgy. In order to solve the the technical problems of a high content of aluminum impurities, a low separation efficiency of the aluminum impurities, high energy consumption, large environmental pollution and the like of existing aluminum powder vanadium-removing crude titanium tetrachloride mud, the invention provides a method for removing aluminum. The method comprises the steps: adding water to the aluminum powder vanadium-removing crude titanium tetrachloride mud for hydrolysis, performing first sedimentation after the hydrolysis, performing stratification so as to obtain a supernatant liquid and bottom concentrated mud, performing second sedimentation on the supernatant liquid obtained from the first sedimentation, performing stratification so as to obtain low-aluminum TiCl4 and bottom concentrated mud, and performing tubular filtration or slurry evaporation treatment on the bottom concentrated mud according to different solid content. A combined process including hydrolysis, first sedimentation, second sedimentation, tubular filtration and slurry evaporation is performed on the aluminum powder vanadium-removing mud, the aluminum impurities in the mud maximally are separated maximally, and titanium tetrachloride in the mud is recovered.
Owner:PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP

Novel ternary composite visible-light-induced photocatalyst for efficiently and stably treating hexavalent chromium wastewater and synthesis method thereof

The invention discloses a ternary composite visible-light-induced photocatalyst and a synthesis method thereof. The synthesis method comprises the following steps: firstly, preparing g-C3N4 by adopting a melamine calcining method; then mixing the g-C3N4 with an N,N-dimethylformamide solution of polyaniline, and carrying out ultrasonic treatment, stirring and solvent evaporation to prepare a polyaniline/g-C3N4 binary compound; and mixing the polyaniline/g-C3N4 binary compound, single-layer graphene oxide and ascorbic acid in deionized water, and carrying out hydrothermal treatment on the mixture to obtain the graphene/g-C3N4/polyaniline ternary compound. The method is simple and easy to implement, the raw materials are rich and easy to obtain, metal and metal compounds are not used, the cost is low, and the obtained graphene/g-C3N4/polyaniline ternary compound not only has high visible light catalytic activity on reduction of hexavalent chromium in a decorative chromium plating solution, but also has good photocatalytic stability and reusability, and can be used as a novel visible-light-induced photocatalyst to be applied to efficient and stable treatment of hexavalent chromium wastewater.
Owner:YANGZHOU UNIV

Gas-solid separating method and system for simple substance sulphur in sulphur-containing exhaust

The invention discloses a gas-solid separating method and a gas-solid separating system for simple substance sulphur in sulphur-containing exhaust. The gas-solid separating method for simple substancesulphur in sulphur-containing exhaust comprises the following steps: first, cooling sulphur-containing exhaust at an extremely high speed; then, separating dust; finally, recycling a heavy liquid phase solvent and simple substance sulphur; according to the method disclosed by the invention, the separating efficiency of the simple substance sulphur is up to 90 percent or above; moreover, the exhaust is further purified, and an environment pollution accident is avoided; in a separating process of the simple substance sulphur, the heavy liquid phase solvent of the simple substance sulphur evaporates to form a gas phase solvent which can be recycled as the liquid phase solvent for reusing through cooling, so that the sulphur removing cost is reduced. The system comprises a quick cooling system, a low-temperature washing purifying system, a light liquid phase and heavy liquid phase separating system, a washing liquid recycling system and a simple substance sulphur recycling system. The system disclosed by the invention has the advantages of stability and high efficiency in high sulphur-containing exhaust treatment, high simple substance sulphur separating efficiency, energy conservation and environmental pollution.
Owner:KUNMING UNIV OF SCI & TECH

Method for quality classification and pipe connection of chemical wastewater

The invention discloses a method for quality classification and pipe connection of chemical wastewater, and belongs to the technical field of wastewater treatment. The method for quality classification and pipe connection of the chemical wastewater specifically comprises the steps that 1, an OUR online measuring instrument is utilized for measuring a breathing rate OUR of the wastewater; 2, an activated sludge breathing instrument is utilized for measuring the breathing rate OUR of an endogenesis of activated sludge of an aeration tank of a wastewater pipe connection system; 3, by comparing the sizes of OUR and OUR endogenesis, the wastewater is divided into three categories including the biodegradable wastewater, the degradation-resistant non-toxic wastewater and the toxic wastewater; 4,different categories of wasterwater are discharged into different treatment systems for treatment respectively. The method solves the problems that in the prior art, non-differential treatment methodsfor chemical wastewater have high cost and unstable treatment effects. The method for quality classification and pipe connection of the chemical wastewater can effectively improve the wastewater treatment effect and achieve the wastewater treatment purpose of substantial reduction of toxic pollutants with economic stability.
Owner:NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST

Processing technology for aluminum alloy battery tray of passenger car

The invention belongs to the technical field of battery tray processing, and particularly relates to a processing technology for an aluminum alloy battery tray of a passenger car. The processing technology comprises the following steps of casting, namely adding the prepared raw materials into a smelting furnace for melting according to technological requirements, and effectively removing miscellaneous slag and gas in a melt by degassing and deslagging refining means; combining an extrusion process for realizing isothermal extrusion by adopting variable-speed regulation and control with a gradient heating process, reducing the temperature of an aluminum bar which is heated before extrusion gradually from front to back along the axis direction of the aluminum bar to form a temperature gradient and realizing isothermal extrusion, so that aheated and processed product is uniform in core surface temperature, bright in surface color and small in mechanical property deviation; and metal elastic deformation generated when a die bears high-temperature and high-pressure heat friction is reduced and avoided, the current situation that the size deviation of the head and the tail of an extruded long material product is larger is effectively improved, and meanwhile, it can be guaranteed that the surface temperature is basically consistent when a profile is discharged, and the product quality is greatly improved.
Owner:GUANGXI UNIV

Process for neutralizing and rectifying high-hydrochloric-acid n-butyl alcohol wastewater

The invention relates to a process for neutralizing and rectifying high-hydrochloric-acid n-butyl alcohol wastewater. The method comprises the following steps: (1) adding high-purity calcium stone into a stone neutralizing tank, wherein the hydrochloric acid in wastewater can be neutralized by calcium carbonate in the calcium stone; (2) arranging a first-stage lift pump in a regulating tank, and controlling high start and low stop by a floating ball liquid level meter to supply water to the neutralizing tank; (3) adding a small amount of calcium carbonate powder into the neutralizing tank to neutralize the wastewater to be neutral, then conveying the wastewater to a security filter through a second-stage lifting pump, and filtering; (4) enabling the wastewater filtered by the security filter to enter a raw material storage tank under the pressure of a pump; (5) arranging a third-stage lift pump in the raw material storage tank, arranging a flow meter and a pneumatic valve, and controlling the flow of the wastewater entering a rectifying tower through the pneumatic valve so as to achieve the separation of n-butyl alcohol from water; and (6) arranging a finished product tank beside the rectifying tower, wherein the finished product tank is used for receiving the separated n-butyl alcohol. The method can be used for efficiently and stably treating the high-hydrochloric-acid n-butyl alcohol wastewater.
Owner:国合恒新环保江苏有限公司

Rubbish penetrating fluid and urban sewage treatment device

The invention discloses rubbish penetrating fluid and an urban sewage treatment device. The device comprises a disinfection and sterilization tank, a heavy metal separation tank, a secondary reactiontank and a precipitation tank, wherein the disinfection and sterilization tank, the heavy metal separation tank and the secondary reaction tank are all internally provided with stirring paddles whichare driven by a motor arranged above, the outer sides of the disinfection and sterilization tank, the heavy metal separation tank and the secondary reaction tank are respectively provided with a firstliquid storage bucket, a second liquid storage bucket and a third liquid storage bucket, in the second liquid storage bucket, a stirring paddle is arranged, a stirring motor is arranged above the second liquid storage bucket, the front end of the disinfection and sterilization tank is connected with an ammonia nitrogen air stripping tower, a water inlet is arranged above the ammonia nitrogen airstripping tower, a water outlet is arranged below the ammonia nitrogen air stripping tower, and the water outlet is connected to the disinfection and sterilization tank through a pipeline. The urban sewage treatment device can be used for achieving efficient and stable treatment of the filtration and decomposition of organic matter, nitrogen, phosphorus and heavy metal, and the discharge standardis met.
Owner:莱州洁宇机械设备有限公司
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