WO2023088407A1 - Procédé de préparation d'une membrane d'osmose inverse destinée au dessalement d'eau de mer et membrane d'osmose inverse préparée à partir dudit procédé - Google Patents

Procédé de préparation d'une membrane d'osmose inverse destinée au dessalement d'eau de mer et membrane d'osmose inverse préparée à partir dudit procédé Download PDF

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WO2023088407A1
WO2023088407A1 PCT/CN2022/132771 CN2022132771W WO2023088407A1 WO 2023088407 A1 WO2023088407 A1 WO 2023088407A1 CN 2022132771 W CN2022132771 W CN 2022132771W WO 2023088407 A1 WO2023088407 A1 WO 2023088407A1
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Prior art keywords
reverse osmosis
osmosis membrane
trimellitate
solution
preparation
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PCT/CN2022/132771
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English (en)
Chinese (zh)
Inventor
刘庚
杨兴胜
肖剑
胡利杰
梁松苗
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沃顿科技股份有限公司
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Publication of WO2023088407A1 publication Critical patent/WO2023088407A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/34—Polyvinylidene fluoride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/40—Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
    • B01D71/42—Polymers of nitriles, e.g. polyacrylonitrile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/56—Polyamides, e.g. polyester-amides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
    • B01D71/62—Polycondensates having nitrogen-containing heterocyclic rings in the main chain
    • B01D71/64—Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
    • B01D71/68—Polysulfones; Polyethersulfones
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

Definitions

  • the disclosure relates to a method for preparing a seawater desalination reverse osmosis membrane and a reverse osmosis membrane prepared therefrom, belonging to the field of seawater desalination treatment.
  • nanomaterials graphene oxide, metal oxide nanomaterials, carbon nanotubes, etc.
  • reducing the cross-linking degree of the membrane and preparing a loose reverse osmosis membrane can also increase the flux of the membrane.
  • the present disclosure intends to start from the interfacial polymerization reaction process, and provide a simple and convenient method for preparing a seawater desalination reverse osmosis membrane with a loose polyamide layer structure and the reverse osmosis membrane prepared thereby, so as to promote the reverse osmosis membrane in seawater. Further applications in the field of desalination.
  • the present disclosure is mainly aimed at the existing reverse osmosis membrane technology, by simply adjusting the interfacial polymerization process, preparing a polyamide layer with a loose structure, and preparing a seawater desalination reverse osmosis membrane with high flux while ensuring a certain desalination performance.
  • [1] a kind of preparation method of seawater desalination reverse osmosis membrane, it comprises the following steps:
  • step (2) contacting the base film obtained in step (1) with an acid chloride monomer solution containing a plasticizer to form a polyamide layer on the base film;
  • the plasticizer has the following structure:
  • R1 is a linear or branched alkyl group containing 1-10 carbons, and R2 and R3 are independently -H or -COOR1.
  • the base membrane is selected from polysulfone-based membranes, polyethersulfone-based membranes, sulfonated polyethersulfone-based membranes, polyimide One or more of amine-based membranes, polyvinylidene fluoride-based membranes, polyacrylonitrile-based membranes, polypropylene-based membranes, and polyvinyl chloride-based membranes;
  • the polyamine monomer is selected from one or more of m-phenylenediamine, piperazine, ethylenediamine, p-phenylenediamine, o-phenylenediamine and s-phenylenediamine;
  • the content of the polyamine monomer is 0.1-10wt%.
  • step (2) the acid chloride monomer is selected from trimesoyl chloride, cyanuric chloride, dansyl chloride, isophthaloyl chloride One or more of formyl chloride, terephthaloyl chloride, phthaloyl chloride, and bipylloyl chloride;
  • the solvent of the acid chloride monomer solution is selected from one or more of n-hexane, n-heptane, cyclohexane, ethylcyclohexane, Isopar M, Isopar H, Isopar L, Isopar E or Isopar G;
  • the content of the acid chloride monomer is 0.001-3 wt%.
  • the plasticizer is selected from dimethyl terephthalate, diethyl terephthalate, terephthalate Dipropyl phthalate, dibutyl terephthalate, dipentyl terephthalate, dihexyl terephthalate, diheptyl terephthalate, dioctyl terephthalate, terephthalate Dinonyl formate, Didecyl terephthalate; Trimethyl trimellitate, Triethyl trimellitate, Tripropyl trimellitate, Tributyl trimellitate, Trimellitate Pentyl trimellitate, trihexyl trimellitate, triheptyl trimellitate, trioctyl trimellitate, trinonyl trimellitate, tridecyl trimellitate, tris(810 ) ester; tetramethyl pyromellitic acid, tetraethy
  • the content of the plasticizer is 0.001-5 wt%.
  • step (4) immersing the reverse osmosis membrane obtained in step (3) into a weakly alkaline substance containing 1-5 wt % Washing with an aqueous solution, the weakly alkaline substance is selected from one or more of sodium carbonate, sodium bicarbonate, sodium citrate, sodium sulfite, sodium bisulfite.
  • step (5) immersing the reverse osmosis membrane obtained in step (4) in an aqueous solution containing 30-60 wt% alcohols for washing, the The alcohols are selected from one or more of ethanol, n-propanol, isopropanol, phenoxyethanol, and ethylene glycol.
  • step (6) coating the surface of the reverse osmosis membrane obtained in step (5) with a protective layer solution, and the protective layer solution is selected from poly One or more of vinyl alcohol solution, polyethylene glycol solution, and tannic acid solution;
  • the concentration of the protective layer solution is 1-10wt%.
  • a seawater desalination reverse osmosis membrane prepared by the preparation method according to any one of [1] to [9].
  • the technical effect created by the present disclosure is reflected in the preparation of a reverse osmosis membrane with high flux while ensuring a certain desalination performance by introducing an environmentally friendly plasticizer into the organic phase solution.
  • the present disclosure does not need to introduce additional devices, can be improved on the existing technology, and can significantly reduce the cost.
  • the seawater desalination reverse osmosis membrane provided by the present disclosure has the characteristics of high water yield while ensuring qualified desalination performance, and can be applied to water treatment fields such as seawater desalination.
  • the flux of the reverse osmosis membrane of the present disclosure can reach 36.28Lm -2 .h -1 , and the desalination rate can reach 99.75%.
  • the present disclosure provides a preparation method of seawater desalination reverse osmosis membrane, which comprises the following steps:
  • step (2) contacting the base film obtained in step (1) with an acid chloride monomer solution containing a plasticizer to form a polyamide layer on the base film;
  • the plasticizer has the following structure:
  • R1 is a linear or branched alkyl group containing 1-10 carbons, and R2 and R3 are independently -H or -COOR1.
  • each step of the preparation method of the present disclosure is described in detail below. If not specified, various raw materials used in the preparation method of the present disclosure can be obtained commercially or prepared by known methods. In addition, if the type of solvent is not specified, the solution used in the preparation method of the present disclosure is an aqueous solution.
  • step (1) the base film is contacted with the polyamine monomer solution.
  • the type of the base membrane is not particularly limited.
  • the base membrane is selected from polysulfone-based membranes, polyethersulfone-based membranes, sulfonated polyethersulfone-based membranes, polyimide-based membranes, and polyvinylidene fluoride-based membranes.
  • the pore diameter of the base film is not particularly limited, preferably 30-50 nm; the thickness of the base film is not particularly limited, preferably 40-60 ⁇ m.
  • the polyamine monomer refers to a monomer having more than two functional amino functional groups, preferably selected from m-phenylenediamine, piperazine, ethylenediamine, p-phenylenediamine, o-phenylenediamine and s-phenylenediamine one or more of.
  • the content of the polyamine monomer is 0.1-10 wt%, preferably 0.3-3 wt%. If the content of polyamine monomers is lower than 0.1wt%, the desalination performance of the membrane is poor, and it is impossible to prepare reverse osmosis membranes operating under seawater desalination conditions; if its content is higher than 10wt%, the formed polyamide layer is weak Thick and dense, membranes have low or no flux.
  • the polyamine monomer solution optionally also contains other components, such as pH regulators and surfactants, the pH regulators such as sodium hydroxide, potassium hydroxide, triethyl One or more of amines, camphorsulfonic acid, etc., and the surfactant is one or more of sodium dodecylbenzenesulfonate, sodium lauryl sulfate, sodium dodecylsulfonate, etc.
  • pH regulators such as sodium hydroxide, potassium hydroxide, triethyl One or more of amines, camphorsulfonic acid, etc.
  • the surfactant is one or more of sodium dodecylbenzenesulfonate, sodium lauryl sulfate, sodium dodecylsulfonate, etc.
  • the polyamine monomer solution may contain 0.1-10wt% polyamine monomer, 1-5wt% triethylamine, 1-8wt% camphorsulfonic acid, 0-1wt% sodium dodecylbenzenesulfonate , based on the total weight of the polyamine monomer solution.
  • the contact time between the base film and the polyamine monomer solution is preferably 10-60 seconds. If the contact time is less than 10 seconds, the base film cannot absorb a sufficient amount of polyamine monomers for interfacial polymerization; if the contact time is more than 60 seconds, the amount of polyamine monomers adsorbed is too large, and the prepared The polyamide layer is thicker, which affects the permeability of the membrane.
  • the contact temperature is not limited, and may be room temperature, or within a temperature range of 20 to 40°C.
  • step (2) the base film obtained in step (1) is contacted with an acid chloride monomer solution containing a plasticizer to form a polyamide layer on the base film. That is, the interfacial polymerization reaction between the polyamine monomer and the acid chloride monomer on the base film in the step (2) forms a polyamide layer.
  • the type of the acid chloride monomer is not limited, preferably selected from trimesoyl chloride, cyanuric acid chloride, dansyl chloride, isophthaloyl dichloride, terephthaloyl dichloride, phthaloyl dichloride, bipylloyl chloride one or more of.
  • the solvent of the acid chloride monomer solution is an organic solvent, preferably selected from n-hexane, n-heptane, cyclohexane, ethylcyclohexane, Isopar M, Isopar H, Isopar L, Isopar E or Isopar G one or more.
  • the content of the acid chloride monomer is 0.001-3 wt%, preferably 0.05-0.5 wt%. If the content of the acid chloride monomer is lower than 0.001wt%, the polyamide layer with a dense structure cannot be formed, and there are many defects on the surface of the membrane, which affects the performance of the reverse osmosis membrane; if the content is higher than 3wt%, the formed polyamide The amide layer is thicker, and the prepared reverse osmosis membrane has no flux.
  • the prepared reverse osmosis membrane has high flux while ensuring a certain desalination performance.
  • plasticizer is selected from dimethyl terephthalate, diethyl terephthalate, dipropyl terephthalate, dibutyl terephthalate, dipentyl terephthalate, terephthalate Dihexyl formate, diheptyl terephthalate, dioctyl terephthalate, dinonyl terephthalate, didecyl terephthalate; trimethyl trimellitate, trimethyl trimellitate Ethyl trimellitate, Tripropyl trimellitate, Tributyl trimellitate, Tripentyl trimellitate, Trihexyl trimellitate, Triheptyl trimellitate, Trioctyl trimellitate , trinonyl trimellitate, tridecyl trimellitate, tri(810) trimellitate; tetramethyl pyromellitic acid, tetraethyl pyromellitic acid, tetrapropyl pyromellitic acid, t
  • the content of the plasticizer is lower than 0.001wt%, the effect of improving the performance of the reverse osmosis membrane cannot be achieved; if the content is higher than 5wt%, the prepared reverse osmosis membrane has lower desalination performance and cannot meet the actual use need.
  • the contact time between the base film and the acid chloride monomer solution is preferably 10-60 seconds. If the contact time is less than 10 seconds, the interfacial polymerization reaction is incomplete, forming a polyamide layer with defects, and the performance of the prepared reverse osmosis membrane is poor; if the contact time is more than 60 seconds, the formed polyamide layer is thicker, and the preparation The reverse osmosis membrane flux is low.
  • the contact temperature is not limited, and may be room temperature, or within a temperature range of 20 to 40°C.
  • the weight ratio of the polyamine monomer to the acid chloride monomer is (1-100):1, preferably (10-50):1.
  • the polyamide layer is further cross-linked by heating to form a reverse osmosis membrane.
  • the heating temperature range is 40-90°C, preferably 50-75°C; the heating time is 1-10 minutes, preferably 2-6 minutes. Heating can help the polyamide layer to cross-link and solidify, thereby promoting the formation of the reverse osmosis membrane; on the contrary, if this process is lacking or this process is not fully implemented, the membrane surface of the formed reverse osmosis membrane is prone to defects, resulting in the reverse osmosis membrane performance is poor.
  • the reverse osmosis membrane obtained in this step (3) can also be called "primary reverse osmosis membrane".
  • the reverse osmosis membrane of the present disclosure can be obtained.
  • the preparation method of the present disclosure may further include the following steps (4) to (6).
  • step (4) the reverse osmosis membrane obtained in step (3) is immersed in an aqueous solution containing 1-5 wt% of weakly alkaline substances for washing.
  • the purpose of this washing is to remove excess unreacted monomer to optimize the performance of the reverse osmosis membrane.
  • the weakly alkaline substance is selected from one or more of sodium carbonate, sodium bicarbonate, sodium citrate, sodium sulfite, and sodium bisulfite.
  • the washing time in step (4) is 1-8 minutes, preferably 3-5 minutes; washing can be performed at 60-80°C.
  • step (5) the reverse osmosis membrane obtained in step (4) is immersed in an aqueous solution containing 30-60 wt% alcohols for washing.
  • the purpose of this washing is to remove excess plasticizer in order to optimize the performance of the reverse osmosis membrane.
  • the alcohols are selected from one or more of ethanol, n-propanol, isopropanol, phenoxyethanol, and ethylene glycol.
  • the washing time in step (5) is 1-5 minutes, preferably 2-3 minutes; washing can be performed at 20-40°C.
  • step (6) the surface of the reverse osmosis membrane obtained in step (5) is coated with a protective layer solution, and the protective layer solution is selected from one of polyvinyl alcohol solution, polyethylene glycol solution, tannic acid solution or Various.
  • the protective layer solution is selected from one of polyvinyl alcohol solution, polyethylene glycol solution, tannic acid solution or Various.
  • a protective layer of polyvinyl alcohol, polyethylene glycol or tannic acid on the surface of the reverse osmosis membrane can reduce the damage of the surface of the reverse osmosis membrane during post-treatment.
  • the concentration of the protective layer solution is 1-10wt%. If the concentration is lower than 1wt%, the requirement for protecting the membrane surface cannot be met; if the concentration is higher than 10wt%, the membrane surface cannot be dried in the subsequent drying process, thereby affecting the performance of the reverse osmosis membrane.
  • the coating time is 10-20 seconds, and the coating temperature is 20-40°C.
  • the reverse osmosis membrane obtained by carrying out the above steps (1) to (3) or steps (1) to (6) can also be post-treated to obtain the final reverse osmosis membrane.
  • the post-treatment mainly includes heating and drying.
  • the heating and drying temperature range is 50-90° C., and the drying time is 1-10 minutes.
  • reverse osmosis membrane can be treated with hot water and/or soaked in glycerin, and then dried.
  • the present disclosure also provides the reverse osmosis membrane prepared according to the preparation method.
  • the reverse osmosis membrane has a water flux of 30-42 L.m -2 .h -1 and a desalination rate of over 99%. The water flux is improved while ensuring a certain desalination rate.
  • the reverse osmosis membrane can be applied to separation and concentration technologies in the fields of water treatment, dyestuff, biochemical industry, food, environmental protection and the like.
  • the polysulfone particles are dissolved in a solvent of N,N-dimethylformamide in a proportion of 18wt%, and 3wt% polyethylene glycol pore-forming additive is added at the same time.
  • the obtained casting solution is coated on the polyester non-woven fabric by an automatic scraping machine, immersed in a pure water cold water bath at 10-20°C for 3 minutes to solidify to form a film, and the polysulfone with a porous structure is obtained by washing with water basement membrane.
  • Carry out heat treatment in a 60°C oven for 3 minutes soak the reverse osmosis membrane in a 70°C aqueous solution containing 2wt% sodium carbonate and wash with water for 3 minutes, rinse with pure water, then soak the reverse osmosis membrane in a normal temperature aqueous solution containing 40wt% ethanol for 2 minutes, and oxidize it with nitrous acid 2min, after rinsing with pure water, soak in 10wt% glycerin aqueous solution for 8min, coat 3wt% polyvinyl alcohol solution, coating time 10s, temperature 25°C, take it out and dry it in an oven at 60°C to obtain polyamide reverse osmosis membrane.
  • test on the cross-flow type membrane test bench test condition is to comprise the aqueous solution of 32000ppm NaCl, operating pressure 800psi, temperature 25°C, pH 8.
  • the test stabilization time is 60 minutes.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Manufacturing & Machinery (AREA)
  • Nanotechnology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

La présente invention concerne un procédé de préparation d'une membrane d'osmose inverse destinée au dessalement de l'eau de mer et une membrane d'osmose inverse préparée à partir dudit procédé. Ledit procédé de préparation de la présente invention comprend les étapes suivantes : (1) la mise en contact d'une membrane de base avec une solution de monomère de polyamine ; (2) la mise en contact de la membrane de base obtenue à l'étape (1) en contact avec une solution de monomère de chlorure d'acyle contenant un plastifiant pour former une couche de polyamide sur la membrane de base ; et (3) le chauffage de la couche de polyamide pour la réticuler davantage de façon à former une membrane d'osmose inverse. Le plastifiant présente la structure suivante : dans laquelle R1 est un groupe alkyle linéaire ou ramifié contenant 1 à 10 atomes de carbone, et R2 et R3 sont chacun indépendamment -H ou -COOR1. La membrane d'osmose inverse destinée au dessalement de l'eau de mer selon la présente invention présente la caractéristique d'un rendement en eau élevé dans des conditions où les performances de dessalement sont assurées, et peut être utilisée dans le domaine du traitement de l'eau, par exemple dans le dessalement de l'eau de mer.
PCT/CN2022/132771 2021-11-22 2022-11-18 Procédé de préparation d'une membrane d'osmose inverse destinée au dessalement d'eau de mer et membrane d'osmose inverse préparée à partir dudit procédé WO2023088407A1 (fr)

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CN202111388161.9A CN116143234A (zh) 2021-11-22 2021-11-22 一种海水淡化反渗透膜的制备方法和由其制备的反渗透膜
CN202111388161.9 2021-11-22

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Cited By (1)

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WO2024114370A1 (fr) * 2022-11-28 2024-06-06 沃顿科技股份有限公司 Procédé de préparation d'une membrane de nanofiltration et membrane de nanofiltration préparée à l'aide de celui-ci

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CN117919946B (zh) * 2024-03-21 2024-06-18 中山大学 海水淡化反渗透复合膜及其制备方法和应用

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Publication number Priority date Publication date Assignee Title
US6723422B1 (en) * 1997-07-02 2004-04-20 Nitto Denko Corporation Composite reverse osmosis membrane and process for preparing the same
CN104525005A (zh) * 2014-12-30 2015-04-22 胡群辉 一种亲水性抗污染聚酰胺复合反渗透膜及其制备方法
CN108057346A (zh) * 2017-12-08 2018-05-22 南京工业大学 一种高通量聚合物分离膜、制备方法、稀释剂组合物以及应用
CN110665377A (zh) * 2019-10-15 2020-01-10 恩泰环保科技（常州）有限公司 一种高通量抗污染反渗透膜及其制备方法
CN111151137A (zh) * 2020-01-03 2020-05-15 浙江工业大学 一种高通量高截盐反渗透复合膜及其制备方法

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