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30results about How to "Solve the problem of membrane fouling" patented technology
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Methods for edulcoration and desalinization of 1,3-methyl glycol fermentation liquor
ActiveCN101117306ASolve the problem of membrane foulingSolve technical problems such as flow channel blockageHydroxy compound separation/purificationLoss rateDistillation
An impurity removing and desalting method for 1, 3-propanediol zymotic fluid relates to a 1, 3-propanediol zymotic fluid, which provides the An impurity removing and desalting method for 1, 3-propanediol zymotic fluid. Micro filtering impurity removing is that the 1, 3-propanediol zymotic fluid with germ is preprocessed by a filtering bag and enters a ceramics film device micro for micro filtering impurity removing. The germ body and protein macromolecular matter are removed from zymotic fluid to get the zymotic filter fluid of the 1, 3-propanediol. The salt removing by electrodialysis is that zymotic filter fluid containing the 1, 3-propanediol is put into an electrodialysis device to remove salt and completes when filtrate conductance is reduced to 2000 us. Therefore, the electrodialysis operation is stopped. The filter fluid enters the following technics for condensation and purification. The invention has a bigger film flux, a good treating effect and light ion exchanging film pollution. The salt removing by electrodialysis has low energy consumption and good treating effect. The conductance of material liquid can be completely reduced to 2000 us to satisfy techincs demand of following concentration and distillation. The loss rate of the 1, 3-propanediol is low with little environment pollution.
Owner:SUNTAR MEMBRANE ENVIRONMENT TECH +1
MBR and MMBR composite sewage treatment system based on panel ceramic membranes
InactiveCN105906036AGood physical propertiesReduce intensitySemi-permeable membranesBiological treatment apparatusIndustrial effluentSludge
The invention discloses an MBR and MMBR composite sewage treatment system based on panel ceramic membranes. The composite sewage treatment system comprises a raw water facility, a raw water pump, bioreactors, a suction pump and a clean water pond, wherein each bioreactor comprises a reactor body, an aerating device and a sludge discharging system, and panel ceramic membranes and MBBR suspended fillers are organically combined in the same bioreactor and share the aerating device and the sludge discharging system; and an input end of the raw water pump is communicated with the raw water facility, an output end of the raw water pump is communicated with the internal space of the reactor body, an input end of the suction pump is communicated with outlets of the panel ceramic membranes, and an output end of the suction pump is communicated with the clean water pond. By combining the advantages of an MBR and an MBBR, a relatively good sewage treatment effect, particularly to high-COD and unmanageable industrial wastewater can achieved, and furthermore, the occupied area of a sewage plant can be reduced.
Owner:苏州派宁环保科技有限公司
Method for preparing selective oil-water separation dynamic membrane and application of method
InactiveCN107081075AExtended service lifeSimple preparation processSemi-permeable membranesFatty/oily/floating substances removal devicesHydrogen atmosphereEthylic acid
The invention belongs to the technical field of chemical separation materials, relates to oil-water separation membranes and in particular relates to a method for preparing a selective oil-water separation dynamic membrane and application of the method. The method disclosed by the invention comprises the following steps: adding zinc acetate into absolute ethyl alcohol, and heating and refluxing so as to prepare zinc sol; dipping a base membrane into the zinc sol, and performing high temperature annealing so as to obtain a porous basement membrane coated with zinc oxide seeds; carrying out a hydrothermal reaction between the basement membrane and a zinc acetate pH regulator solution, washing and drying so as to obtain a zinc oxide pre-coated porous separation membrane; and removing oxygen deficiency in a hydrogen atmosphere or obtaining the oxygen deficiency in an oxygen atmosphere by utilizing the surface related deficiency influence of the pre-coated zinc oxide, and respectively obtaining a super-hydrophobic surface and a super-hydrophilic surface, so that the problem that the oil-water separation membrane has poor wetting selectivity is solved. The wetted selective oil-water separation dynamic membrane prepared by the method disclosed by the invention can be applied to oil-water separation and can be repeatedly recycled. The method disclosed by the invention is simple in preparation process, does not cause secondary pollution or emission of toxic substances, and is energy-saving and applicable to industrialized production.
Owner:JIANGSU UNIV
Improved rotating membrane sewage filtration device
ActiveCN104772042ASolving Concentration PolarizationSolving Membrane FoulingSemi-permeable membranesWater/sewage treatment bu osmosis/dialysisSlagConcentration polarization
The invention discloses an improved rotating membrane sewage filtration device, which comprises a rack, a filter box, a first rotating shaft, a motor and a filter cartridge. A plurality of filter holes are formed on the circumferential wall of the filter cartridge, the outer circumferential wall of the filter cartridge is fixedly sleeved with a membrane member, the left side wall of the filter cartridge is connected to a liquid inlet tank, the bottom side wall of the filter box is provided with a liquid outlet, the right end side wall of the filter cartridge is provided with a slag outlet, a second rotating shaft in transmission connection with the first rotating shaft is mounted on the filter box, the second rotating shaft is equipped with a gear able to rotate synchronously therewith, and engaging teeth engaged with the gear are formed on the right side of the filter cartridge. The right end of the slag outlet is connected to a convergent cylinder, a rubber sleeve is inserted in the convergent cylinder, the right end of the rubber sleeve is connected to a plurality of petals, and each petal is equipped with an adjustment unit. The improved rotating membrane sewage filtration device provided by the invention well solves the concentration polarization and membrane pollution problems of the membrane surface, significantly increases the membrane permeation flux, and greatly improves the membrane separation performance.
Owner:惠州市同方水务有限公司
Method for cleaning membrane pollution in process of electrodialysis treatment on paper-making reconstituted tobacco extract liquor
InactiveCN111672326AImprove the effect of alkaline cleaning processRestore fluxTobacco preparationTobacco treatmentMembrane foulingProcess engineering
The invention discloses a method for cleaning membrane pollution in the process of electrodialysis treatment on paper-making reconstituted tobacco extract liquor, which is used for cleaning an electrodialysis system generating membrane pollution through the cleaning processes of primary water washing, reversed-pole alkaline washing, secondary water washing, reversed-pole acid washing and tertiarywater washing in sequence. According to the cleaning method, membrane pollution in the electrodialysis process can be effectively solved, the desalination rate of an electrodialysis system is remarkably recovered, and reliable operation guarantee is provided for the process of treating the paper-making process reconstituted tobacco extracting solution through electrodialysis.
Owner:CHINA TOBACCO ANHUI IND CO LTD
Method for preparing soybean whey oligosaccharide through coupling of heating, flocculating, air floating and ultra-filtering
InactiveCN104530143AReduce Maillard reactionIncrease contentSugar derivativesOligosaccharidesCouplingUltrafiltration
The invention relates to a method for extracting a soybean whey oligosaccharide from soybean whey. The method concretely includes the steps that heating, flocculating, air floating and intermittent flow-crossing ultra-filtering are coupled; a segmented treatment mode is adopted in a ground-breaking mode at a pretreatment stage, and ingeniously combined with air floating separation; composite flocculants with specific components and a specific proportion are selected. The high-quality soybean oligosaccharide product low in maillard browning reaction occurrence rate is provided, the extraction ratio of the soybean whey oligosaccharide can reach 85% and is much higher than that at a common level in the field, the effect that all steps and parameters supplement each other and act in a coordinated mode is achieved, the cost is lowered, and the method is high in operability.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY
Rotary membrane sewage filtration device
ActiveCN104773790ASolve the problem of concentration polarizationSolve the problem of membrane foulingWater/sewage treatment bu osmosis/dialysisConcentration polarizationFiltration
The invention discloses a rotary membrane sewage filtration device, which comprises a frame, a filter box, a first rotating shaft, a motor, and a filter cartridge. The filter box is installed on the frame, the first rotating shaft is rotatably installed in the filter box, the motor is used for driving the first rotating shaft to work, the filter cartridge is rotatably sheathed on the first rotating shaft, a plurality of filter holes are formed on the circumferential wall of the filter cartridge, a membrane member is fixedly sleeved on the external circumferential wall of the filter cartridge, the left end side wall of the filter cartridge is connected to a liquid inlet box, the bottom side wall of the filter box is provided with a liquid outlet, the right end side wall of the filter cartridge is provided with a slag hole, a second rotating shaft in transmission connection with the first rotating shaft is mounted on the filter box and is equipped with a gear able to rotate synchronously with it, and meshing teeth engaged with the gear is formed on the right side of the filter cartridge. The rotary membrane sewage filtration device provided by the invention well solves the membrane surface concentration polarization and membrane pollution problems, significantly increases the membrane permeation flux, and greatly improves the separation performance of the membrane.
Owner:南大环保科技服务南通有限公司
Two-stage rotating purification device
InactiveCN104787915ASolve the problem of concentration polarizationSolve the problem of membrane foulingMultistage water/sewage treatmentConcentration polarizationFixed frame
The invention discloses a two-stage rotating purification device. The two-stage rotating purification device comprises a fixing frame, a casing, a rotating drum, a filtering drum and a first motor, wherein multiple first filtering holes are formed in the circumferential wall of the rotating drum, a first membrane piece is mounted on the outer circumferential wall of the rotating drum in a sleeve manner, a liquid outlet is formed in the bottom of the casing, an end cover is detachably connected with the right end of the rotating drum, a first rotating shaft is fixedly connected onto the end cover and connected with an output shaft of the first motor, a mounting hole is formed in the left end side wall of the rotating drum, the filtering drum is communicated with the rotating drum via the mounting hole, the side wall of the filtering drum is connected with a liquid inlet pipe, a filtering plate is inserted and mounted in the filtering drum, multiple second filtering holes are formed in the filtering plate, second membrane pieces are fixedly mounted on the upper surface and the lower surface of the filtering plate, and a positioning groove where the head end of the filtering plate is inserted and mounted is formed in the inner side wall of the filtering drum. With the adoption of the two-stage rotating purification device, problems of concentration polarization of membrane surfaces and membrane pollution can be well solved, and the purification effect of the device is significantly improved.
Owner:谢洁萍
Method for recovering whey protein or protein in MPC through complex enzyme polymerization coupling ultrafiltration
ActiveCN106720925AReduce retentionReduce cleaning frequencyProtein foodstuffs working-upUltrafiltrationWhey protein
The invention relates to an effective method for simultaneously improving the recovery rate of whey protein or protein in MPC, improving the membrane flux and reducing the lactose retention rate through complex enzyme polymerization coupling ultrafiltration. Concretely, laccase and transglutaminase are sequentially added; complex enzyme polymerization and ultrafiltration are effectively combined; a two-section type pretreatment mode is creatively used before complex enzyme polymerization; the mode that the enzyme is not deactivated after the laccase action is also combined, so that the purity and the recovery rate of the whey protein or the protein in the MPC is greatly improved; the membrane flux is improved; the lactose retention rate is reduced. Compared with the prior art, the method has the advantages that the recovery rate of the whey protein or the protein in the MPC is improved by 20 percent; the membrane flux is improved by 30 percent to 40 percent; the lactose retention rate is reduced by 10 percent; the method capable of simultaneously solving a plurality of problems is obtained. The invention also provides a high-quality product of the whey protein or the protein in the MPC; the condition that the product sensitization is obviously reduced is accidentally found; the effect is realized through the result of the complementary and synergic action of all work procedures and parameters; the operability of the method is high; only once filtering is performed; the industrialization is facilitated.
Owner:OCEAN UNIV OF CHINA
Adjustable double-stage-rotation purifying device
ActiveCN104787848ASolve the problem of concentration polarizationSolve the problem of membrane foulingSemi-permeable membranesWater/sewage treatment bu osmosis/dialysisConcentration polarizationFixed frame
The invention discloses an adjustable double-stage-rotation purifying device. The device comprises a fixed frame, an adjusting device, a casing, a rotating drum, a filtering drum and a first motor, wherein multiple first filtering holes are formed in the circumferential wall of the rotating drum, the outer circumferential wall of the rotating drum is sleeved with a first membrane piece, a liquid outlet is formed in the bottom of the casing, an end cover is detachably connected with the right end of the rotating drum, a first rotating shaft is fixedly connected onto the end cover and connected with an output shaft of the first motor, a mounting hole is formed in the left end side wall of the rotating drum, the filtering drum is communicated with the rotating drum through the mounting hole, the side wall of the filtering drum is connected with a liquid inlet pipe, a filtering plate is inserted in the filtering drum, multiple second filtering holes are formed in the filtering plate, and second membrane pieces are fixedly mounted on upper and lower surfaces of the filtering plate. The device can better solve the problems of concentration polarization of membrane surfaces and membrane pollution, the purifying effect of the device can be significantly improved, and the flow of the liquid flowing out of the liquid outlet can be adjusted according to actual operation conditions.
Owner:山西惠净泉环保科技有限公司
Non-ferrous metal raffinate pretreatment method before membrane pretreatment
PendingCN109292884ARemove complexityStop pollutionSpecific water treatment objectivesWater/sewage treatment by sorptionPretreatment methodCellulose acetate
The invention discloses a non-ferrous metal raffinate pretreatment method before membrane pretreatment, and belongs to the technical field of industrial wastewater treatment. The operation steps of the method comprise: 1, degreasing wastewater, and adjusting the pH value; 2, carrying out static adsorption by using ultrafine powdery active carbon, and carrying out solid-liquid separation after achieving a saturated adsorption state; 3, carrying out dynamic adsorption on the ultrafine powdery active carbon adsorption effluent by using granular active carbon; and 4, carrying out deep treatment onthe wastewater by using cellulose acetate filaments, and carrying out deep treatment on the adsorption effluent by using a membrane. According to the present invention, through the selective adsorption of the specific molecular weight organic matter based on the particle size difference in active carbon, and the selective filtration separation property of the cellulose acetate polymer, the selective adsorption separation of the target pollutant is achieved, such that the pollution on the membrane in the subsequent membrane treatment by the target pollutant can be avoided, and the new chemicalis not introduced and the physicochemical properties of the raffinate are not changed so as to provide the technical support for the membrane treatment and reuse of the raffinate.
Owner:云南同硕环保科技有限公司
Method for preparing CoFe-PBA@PVDF composite membrane by combining coordination self-assembly with delayed phase change and application of CoFe-PBA@PVDF PVDF composite membrane
PendingCN114011252ASolve poor compatibilityGood antifouling performanceSemi-permeable membranesMembranesSOYBEAN SEED OILEnvironmental chemistry
The invention belongs to the technical field of preparation of environmental functional materials, and discloses a method for preparing a CoFe-PBA@PVDF composite membrane by combining coordination self-assembly with delayed phase change and application of the CoFe-PBA@PVDF composite membrane. The PVDF composite membrane with efficient oil-water emulsion separation and anti-fouling properties is prepared by regulating and controlling the surface distribution of inorganic nanoparticles on the membrane and the pore size of the membrane. The obtained PVDF composite membrane has super-hydrophilicity, underwater super-oleophobicity, good water / oil separation performance, anti-fouling performance and self-cleaning function. The separation efficiency for oil-in-water emulsion corresponding to dichloroethane, petroleum ether, methylbenzene, soybean oil and normal hexane reaches up to 99.8%. The in-situ growth of PBA on the surface of the membrane can greatly reduce the blockage of the emulsion to pores and channels on the surface of the membrane by virtue of an advanced oxidation method of persulfate PMS. Due to the excellent catalytic performance of PBA, the composite membrane can effectively degrade organic dye. In an experiment of cross flow for 1 hour, the removal rate of MB is kept to be 99% or above.
Owner:JIANGSU UNIV
Improved type filter device
InactiveCN105854614ATo achieve the purpose of filteringImprove permeabilityMembranesSemi-permeable membranesConcentration polarizationBiochemical engineering
The invention discloses an improved type filter device which comprises a fixed frame, a driving component and a filter component installed on the fixed frame. The filter component comprises a spiral stirring part and a filter cartridge. One end of the spiral stirring part is provided with a first gear portion, one end of the filter cartridge is provided with a second gear portion, and the first gear portion and the second gear portion are coaxially arranged and are both driven by the driving component. The two ends of the filter cartridge are open. The spiral stirring part is inserted into the filter cartridge. The filter cartridge is provided with multiple filter holes and sleeved with a filter film and a sleeving shell. The bottom of the sleeving shell is connected with a water outlet pipe. The filter component further comprises a liquid inlet pipe and a bearing pipe, wherein the liquid inlet pipe is inserted to the open end, close to the second gear portion, of the filter cartridge, and the bearing pipe is used for bearing solid particles at the open end, away from the second gear portion, of the filter cartridge. The problems of film face concentration polarization and film pollution can be solved, and the film permeation flux and filter effect are significantly improved.
Owner:江先庆
A treatment process for the degradation of antibiotic wastewater by an electrochemical membrane filtration coupling system
ActiveCN110498491BImprove hydrophilicityLow costSemi-permeable membranesDispersed particle separationFiltrationMembrane fouling
The invention provides a treatment technology for degrading antibiotic wastewater by an electrochemistry and membrane filtration coupling system. The treatment technology utilizes the electrochemistryand membrane filtration coupling system to treat the antibiotic wastewater, and the coupling system comprises a nitrogen cylinder, a hydraulic control device and a reactor which are communicated in sequence; the reactor comprises a reaction chamber, a water inlet is arranged at the upper end of the reactor and is respectively communicated with the reaction chamber and hydraulic control device, anegative electrode material titanium net is horizontally fixed below the water inlet and in the reaction chamber, a positive electrode material conductive film is horizontally fixed at the bottom surface of the reaction chamber, and the bottom surface of the reaction chamber is provided with a water outlet; and the positive electrode material and the negative electrode material are connected withan external power supply through titanium wires. The antibiotic wastewater passes through the negative electrode material titanium net and the positive electrode material conductive film to undergo filtration and electrocatalytic degradation in order to obtain purified wastewater. The technology which combines electrochemistry and the membrane filtration technique makes filtration and degradationof antibiotics carried out at the same time, so membrane pollution is solved, and efficient treatment of antibiotic wastewater is realized.
Owner:SHANDONG UNIV
Torsional vibration type hollow fiber membrane filtering device
ActiveCN113069928ATorsional vibration achievedAvoid energy consumptionSemi-permeable membranesWater/sewage treatment bu osmosis/dialysisConcentration polarizationMembrane fouling
The invention discloses a torsional vibration type hollow fiber membrane filtering device, belonging to the technical field of water treatment. The torsional vibration type hollow fiber membrane filtering device overcomes the problems of a concentration polarization phenomenon and membrane pollution in the process of filtering raw water by using a hollow fiber membrane module in the prior art, and the problems of adverse influence on the filtering effect and many limitations of an existing membrane pollution control method. The invention provides a torsional vibration assembly which is connected with a hollow fiber membrane assembly for use, so torsional vibration of a hollow fiber membrane is realized, the problem of energy consumption caused by axial up-and-down vibration of the hollow fiber membrane in the prior art is avoided, the problem of requirement on the space of a reactor by horizontal vibration of the hollow fiber membrane in the prior art is solved, and the problems of concentration polarization and membrane pollution in a raw water filtering process are effectively solved.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY
Anaerobic digestion and DAMO coupled biological filter column and method for treating carbon-nitrogen sewage
ActiveCN114716012AAchieving autotrophic denitrificationEmission reductionWater treatment compoundsWaste based fuelMicroorganismMethanobacter
The invention discloses a coupling anaerobic digestion and DAMO biological filter column and a method for treating carbon-nitrogen sewage, and the method comprises the steps of anaerobic digestion methane production bottom end starting, DAMO upper end starting, coupling with anaerobic digestion methane production and organic load and nitrogen load increasing stages, by adopting a step-by-step starting method, firstly, anaerobic methanogens are enriched at the lower part of a reactor; dAMO microorganisms are enriched on the upper middle portion of the reactor, methane and nitrite nitrogen / nitrate nitrogen are generated and subjected to a DAMO reaction on the upper middle portion of the reactor, the nitrite nitrogen / nitrate nitrogen is converted into nitrogen, and anaerobic removal of carbon and nitrogen in the sewage with medium and low carbon and nitrogen can be achieved while efficient autotrophic nitrogen and carbon removal of the sewage are completed. According to the method, greenhouse gas emission in the sewage treatment process is reduced, the problem that nitrate in total nitrogen in effluent is too high is solved, and low-consumption nitrogen and carbon removal of medium-and-low-concentration carbon-nitrogen sewage is realized.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Preparation method of supportless forward osmosis membrane
InactiveCN103212309BHighly hydrophilicImprove hydrophilicitySemi-permeable membranesConcentration polarizationSeparation technology
Belonging to the field of environmental engineering, the invention relates to a preparation method of a supportless forward osmosis membrane. The method disclosed in the invention utilizes the high hydrophilicity and film-forming property of polyvinyl alcohol, brings the polyvinyl alcohol into crosslinking with graphene oxide with bactericidal property and flexibility, and adds m-phenylenediamine and trimesoyl chloride to reduce the salt reverse flux of the prepared forward osmosis membrane. The forward osmosis membrane prepared by the method provided in the invention has thickness less than 38 micrometers, and has the characteristics of no support, high hydrophilicity and pollution resistance, well solves the problems of internal concentration polarization and membrane fouling, thus opening up a new way for forward osmosis membrane preparation and being able to promote wider application of a forward osmosis membrane separation technology.
Owner:DALIAN UNIV OF TECH
Comprehensive prevention and control method of electrodialysis membrane pollution for desalination of salty wastewater from coal chemical industry
ActiveCN104016528BSolve the problem of membrane foulingEasy to operateGeneral water supply conservationDispersed particle separationPollution preventionPollution
The invention relates to a method for comprehensively preventing and controlling electrodialytic membrane pollution for desalination of coal chemical brine waste. The method comprises the following steps: (1) pre-removing organic matters, microbes, colloid, particle suspending matters, Ca<2+>, Mg<2+> and other high valence ions by utilizing the coupling and synergizing effects of a physic-chemical method and a membrane technology; (2) improving the anti-pollution performance of equipment by adopting an electrodialyzer for coal chemical brine waste; (3) controlling the application potential, solution flowing speed, temperature, concentrate pH and reversal cycle to run the electrodialysis below the limited current density; (4) carrying out online washing on membrane pollution formed by electrodialysis of coal chemical saline waste. The method is used for preventing and controlling the electrodialytic membrane pollution in the aspects of pre-removing pollutants, using specific electrodialyzer, optimizing the operation process, online washing membrane pollution and the like, which is to prevent and control membrane pollution formed when coal chemical saline waste is treated by electrodialysis by utilizing the synergetic effect of different technologies.
Owner:JIANGXI INST OF RARE EARTHS CHINESE ACAD OF SCI
A method for reclaiming protein in whey protein or MPC by compound enzyme polymerization coupling ultrafiltration
ActiveCN106720925BReduce retentionReduce cleaning frequencyProtein foodstuffs working-upWhey proteinEnzyme action
The invention relates to an effective method for simultaneously improving the recovery rate of whey protein or protein in MPC, improving the membrane flux and reducing the lactose retention rate through complex enzyme polymerization coupling ultrafiltration. Concretely, laccase and transglutaminase are sequentially added; complex enzyme polymerization and ultrafiltration are effectively combined; a two-section type pretreatment mode is creatively used before complex enzyme polymerization; the mode that the enzyme is not deactivated after the laccase action is also combined, so that the purity and the recovery rate of the whey protein or the protein in the MPC is greatly improved; the membrane flux is improved; the lactose retention rate is reduced. Compared with the prior art, the method has the advantages that the recovery rate of the whey protein or the protein in the MPC is improved by 20 percent; the membrane flux is improved by 30 percent to 40 percent; the lactose retention rate is reduced by 10 percent; the method capable of simultaneously solving a plurality of problems is obtained. The invention also provides a high-quality product of the whey protein or the protein in the MPC; the condition that the product sensitization is obviously reduced is accidentally found; the effect is realized through the result of the complementary and synergic action of all work procedures and parameters; the operability of the method is high; only once filtering is performed; the industrialization is facilitated.
Owner:OCEAN UNIV OF CHINA
Disc tube type vacuum multi-effect membrane distillation assembly and system
PendingCN114367198ASolve the problem of low distillation fluxSolve the problem of membrane foulingReverse osmosisWater/sewage treatment bu osmosis/dialysisReverse osmosisMembrane fouling
The invention belongs to the technical field of membrane distillation, and particularly relates to a disc tube type vacuum multi-effect membrane distillation assembly and system. A disc tube type vacuum multi-effect membrane distillation assembly comprises a disc tube type component, and a membrane on a disc type membrane in the disc tube type component is a pervaporation membrane or a distillation membrane. The disc tube type component comprises a shell, an upper flange plate and a lower flange plate are arranged at the two ends of the shell respectively, the upper flange plate and the lower flange plate are fixed through a center pull rod, and a flow guide plate and a disc type membrane are arranged in the shell. A to-be-treated material inlet, a concentrate outlet and a purified water outlet are formed in the upper flange plate or the lower flange plate. According to the invention, the disc tube type reverse osmosis assembly and the membrane distillation technology are coupled to construct the novel membrane distillation assembly, so that the problems of low membrane distillation flux and membrane pollution in the prior art are solved; a vacuum membrane distillation form is adopted, so that certain flux can be improved, and pollution of high-salinity wastewater to a membrane distillation membrane is relieved.
Owner:SHANXI UNIV
Ferrous/ultraviolet synergistically activated sodium hypochlorite coupled ultrafiltration water purification device and operation method thereof
PendingCN112591965AReduce organic loadMitigation of membrane foulingWater/sewage treatment by irradiationWater contaminantsPollutantEnvironmental chemistry
The invention discloses a ferrous / ultraviolet synergistically activated sodium hypochlorite coupled ultrafiltration water purification device and an operation method thereof, and relates to a ferrous / ultraviolet synergistically activated sodium hypochlorite coupled ultrafiltration water purification device and an operation method thereof. The invention aims to solve the problem of poor membrane pollution treatment effect caused by algae extracellular polymeric substances while micromolecules are removed by membrane pretreatment in the existing water treatment process. The device comprises a water inlet pipe, a sodium hypochlorite adding tank, a ferrous iron adding tank, a photochemical reaction area, a membrane filtration water purification area, a water outlet pipe and a backwashing pipe,the water inlet pipe is connected with a water inlet of the photochemical reaction area through a water inlet pump, and a water outlet of the photochemical reaction area is connected with a water inlet of the membrane filtration water purification area through a photochemical reaction area water outlet pump; a water outlet of the membrane filtration water purification area is respectively connected with the water outlet pipe and the backwashing pipe through a tee joint. According to the invention, the activation characteristic of ferrous ions and ultraviolet light on sodium hypochlorite is utilized to realize efficient removal of pollutants and improvement of membrane separation efficiency. The device and method is applied to the technical field of membrane water treatment.
Owner:HARBIN INST OF TECH
Preparation method and application of a dynamic membrane for selective oil-water separation
InactiveCN107081075BExtended service lifeSimple preparation processSemi-permeable membranesFatty/oily/floating substances removal devicesHydrogen atmosphereEthylic acid
Owner:JIANGSU UNIV
An adjustable two-stage rotary purification device
ActiveCN104787848BSolve the problem of concentration polarizationSolve the problem of membrane foulingSemi-permeable membranesWater/sewage treatment bu osmosis/dialysisFixed frameMembrane surface
Owner:山西惠净泉环保科技有限公司
An improved two-stage rotary purification device
ActiveCN104787916BAvoid cloggingHigh permeation fluxMultistage water/sewage treatmentConcentration polarizationMembrane surface
Owner:柳州紫荆技术转移中心有限公司
A two-stage rotary purification device
InactiveCN104787915BSolve the problem of concentration polarizationSolve the problem of membrane foulingMultistage water/sewage treatmentConcentration polarizationMembrane surface
The invention discloses a two-stage rotating purification device. The two-stage rotating purification device comprises a fixing frame, a casing, a rotating drum, a filtering drum and a first motor, wherein multiple first filtering holes are formed in the circumferential wall of the rotating drum, a first membrane piece is mounted on the outer circumferential wall of the rotating drum in a sleeve manner, a liquid outlet is formed in the bottom of the casing, an end cover is detachably connected with the right end of the rotating drum, a first rotating shaft is fixedly connected onto the end cover and connected with an output shaft of the first motor, a mounting hole is formed in the left end side wall of the rotating drum, the filtering drum is communicated with the rotating drum via the mounting hole, the side wall of the filtering drum is connected with a liquid inlet pipe, a filtering plate is inserted and mounted in the filtering drum, multiple second filtering holes are formed in the filtering plate, second membrane pieces are fixedly mounted on the upper surface and the lower surface of the filtering plate, and a positioning groove where the head end of the filtering plate is inserted and mounted is formed in the inner side wall of the filtering drum. With the adoption of the two-stage rotating purification device, problems of concentration polarization of membrane surfaces and membrane pollution can be well solved, and the purification effect of the device is significantly improved.
Owner:谢洁萍
A carbon dioxide-assisted bipolar membrane electrodialysis system and production method for amino acid production
ActiveCN106582293BReduce pollutionImprove recycling efficiencyOrganic chemistryCarbon compoundsNeutral Amino AcidsPhysical chemistry
The invention discloses a carbon dioxide assisted bipolar membrane electrodialysis system and a production method for amino acid production. The carbon dioxide assisted bipolar membrane electrodialysis system is characterized by consisting of a bipolar membrane electrodialysis device and a carbon dioxide assisting device, wherein repetitive units of ''alkali chambers-material liquid chambers-acid chambers'' are formed inside the bipolar membrane electrodialysis device; corresponding storage tanks are additionally arranged inside the bipolar membrane electrodialysis device; and the carbon dioxide assisting device is used for introducing a gas containing carbon dioxide into a material liquid storage tank, so that amino acid salt and CO2 can be converted into corresponding neutral amino acid through an adsorption equilibrium reaction. As amino acid is separated and produced by using the carbon dioxide assisted bipolar membrane electrodialysis system, the recycling efficiency of the amino acid in the electrodialysis process can be improved without introduction of extra acid, and in addition, membrane pollution can be reduced, and the operation cost can be lowered.
Owner:UNIV OF SCI & TECH OF CHINA
An Improved Rotating Membrane Sewage Filtration Device
ActiveCN104772042BQuick inhalationHigh permeation fluxSemi-permeable membranesWater/sewage treatment bu osmosis/dialysisConcentration polarizationSlag
The invention discloses an improved rotating membrane sewage filtration device, which comprises a rack, a filter box, a first rotating shaft, a motor and a filter cartridge. A plurality of filter holes are formed on the circumferential wall of the filter cartridge, the outer circumferential wall of the filter cartridge is fixedly sleeved with a membrane member, the left side wall of the filter cartridge is connected to a liquid inlet tank, the bottom side wall of the filter box is provided with a liquid outlet, the right end side wall of the filter cartridge is provided with a slag outlet, a second rotating shaft in transmission connection with the first rotating shaft is mounted on the filter box, the second rotating shaft is equipped with a gear able to rotate synchronously therewith, and engaging teeth engaged with the gear are formed on the right side of the filter cartridge. The right end of the slag outlet is connected to a convergent cylinder, a rubber sleeve is inserted in the convergent cylinder, the right end of the rubber sleeve is connected to a plurality of petals, and each petal is equipped with an adjustment unit. The improved rotating membrane sewage filtration device provided by the invention well solves the concentration polarization and membrane pollution problems of the membrane surface, significantly increases the membrane permeation flux, and greatly improves the membrane separation performance.
Owner:惠州市同方水务有限公司
Moving bed biofilm reactor-forward osmosis-reverse osmosis composite wastewater treatment device and nitrogen-containing organic wastewater treatment method
ActiveCN106007170BReduce pollutionReduce rateWater treatment parameter controlWater contaminantsMoving bed biofilm reactorReverse osmosis
The invention provides a moving bed biofilm reactor-FO-RO combined wastewater treatment device. The wastewater treatment device mainly comprises a regulation pond, a moving bed biofilm reactor, an aeration pump, an aeration tube, a RO film assembly, a FO film assembly, a regulation settling pond, a driving liquid pond, a sewage return pump and a control valve. The invention also provides an organic nitrogenous waste water treatment method adopting the wastewater treatment device. According to the wastewater treatment device, the moving bed biofilm reactor, the FO film assembly and the RO film assembly are organically and integrally coupled, so that the rate of film fouling can be effectively reduced, the wastewater treatment efficiency can be improved, and when wastewater is treated with the method, the wastewater treatment effect can be enhanced, and the wastewater treatment cost can be reduced.
Owner:SICHUAN UNIV
A method for preparing soybean whey oligosaccharides coupled with heating, flocculation, air flotation and ultrafiltration
InactiveCN104530143BReduce Maillard reactionIncrease contentSugar derivativesOligosaccharidesFlocculationUltrafiltration
The invention relates to a method for extracting a soybean whey oligosaccharide from soybean whey. The method concretely includes the steps that heating, flocculating, air floating and intermittent flow-crossing ultra-filtering are coupled; a segmented treatment mode is adopted in a ground-breaking mode at a pretreatment stage, and ingeniously combined with air floating separation; composite flocculants with specific components and a specific proportion are selected. The high-quality soybean oligosaccharide product low in maillard browning reaction occurrence rate is provided, the extraction ratio of the soybean whey oligosaccharide can reach 85% and is much higher than that at a common level in the field, the effect that all steps and parameters supplement each other and act in a coordinated mode is achieved, the cost is lowered, and the method is high in operability.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY
A rotary membrane sewage filter device
ActiveCN104773790BSolve the problem of concentration polarizationSolve the problem of membrane foulingWater/sewage treatment bu osmosis/dialysisConcentration polarizationFiltration
The invention discloses a rotary membrane sewage filtration device, which comprises a frame, a filter box, a first rotating shaft, a motor, and a filter cartridge. The filter box is installed on the frame, the first rotating shaft is rotatably installed in the filter box, the motor is used for driving the first rotating shaft to work, the filter cartridge is rotatably sheathed on the first rotating shaft, a plurality of filter holes are formed on the circumferential wall of the filter cartridge, a membrane member is fixedly sleeved on the external circumferential wall of the filter cartridge, the left end side wall of the filter cartridge is connected to a liquid inlet box, the bottom side wall of the filter box is provided with a liquid outlet, the right end side wall of the filter cartridge is provided with a slag hole, a second rotating shaft in transmission connection with the first rotating shaft is mounted on the filter box and is equipped with a gear able to rotate synchronously with it, and meshing teeth engaged with the gear is formed on the right side of the filter cartridge. The rotary membrane sewage filtration device provided by the invention well solves the membrane surface concentration polarization and membrane pollution problems, significantly increases the membrane permeation flux, and greatly improves the separation performance of the membrane.
Owner:南大环保科技服务南通有限公司
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