WO2012056668A1 - Structure de membrane d'osmose inverse pour le traitement de l'eau et module membranaire d'osmose inverse - Google Patents

Structure de membrane d'osmose inverse pour le traitement de l'eau et module membranaire d'osmose inverse Download PDF

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Publication number
WO2012056668A1
WO2012056668A1 PCT/JP2011/005919 JP2011005919W WO2012056668A1 WO 2012056668 A1 WO2012056668 A1 WO 2012056668A1 JP 2011005919 W JP2011005919 W JP 2011005919W WO 2012056668 A1 WO2012056668 A1 WO 2012056668A1
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Prior art keywords
reverse osmosis
osmosis membrane
flow path
water
membrane structure
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PCT/JP2011/005919
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English (en)
Japanese (ja)
Inventor
泰子 山田
牛房　信之
敬子 中野
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株式会社日立製作所
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Publication of WO2012056668A1 publication Critical patent/WO2012056668A1/fr

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    • 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
    • B01D61/08—Apparatus therefor
    • 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
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/06—Tubular membrane modules
    • B01D63/066—Tubular membrane modules with a porous block having membrane coated passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/08—Prevention of membrane fouling or of concentration polarisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/14—Dynamic membranes
    • B01D69/141—Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes
    • B01D69/145—Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes containing embedded catalysts
    • 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
    • B01D71/02—Inorganic material
    • B01D71/024—Oxides
    • 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
    • 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
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/20—By influencing the flow
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/10—Photocatalysts
    • 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 present invention relates to a reverse osmosis membrane technology used for wastewater regeneration treatment and seawater desalination treatment.
  • Water recycling refers to removing unnecessary materials from domestic wastewater (sewage) and industrial wastewater, and purifying water according to the intended use, such as domestic water, industrial water, and agricultural water.
  • a water recycling facility there is a method combining a membrane separation activated sludge facility (MBR, Membrane Bio-Reactor) and a reverse osmosis membrane. Since organic substances and salts that cannot be decomposed by organisms are dissolved in water treated with MBR, a reverse osmosis membrane is used for the purpose of removing them. Reverse osmosis membranes are also used for desalination of seawater, production of pure water for the production of precision electronic equipment such as semiconductors, and advanced treatment of clean water.
  • MBR membrane separation activated sludge facility
  • Reverse osmosis membranes are also used for desalination of seawater, production of pure water for the production of precision electronic equipment such as semiconductors, and advanced treatment of clean water.
  • the general structure of a reverse osmosis membrane is that a semipermeable membrane such as an aromatic polyamide membrane or cellulose acetate is superimposed on a microporous porous support, and the thickness of the semipermeable membrane is 200 to 300 nm.
  • a reverse osmosis membrane whose semipermeable membrane is an aromatic polyamide is widely used for industrial use because of its excellent water permeability and electrolyte removal performance.
  • the reverse osmosis membrane module uses a spacer and a reverse osmosis membrane bonded together, and the distance between the spacer and the reverse osmosis membrane is narrow.
  • Patent Document 4 discloses a method of using an adsorbent to remove organic substances dissolved in water when water treatment is performed using a reverse osmosis membrane.
  • the adsorbent has a problem that a large amount of adsorbent is required because the surface area is insufficient.
  • Patent Document 3 a contrivance is made to widen the spacer interval, but it is still about 400 nanometers and there is almost no effect of suppressing clogging.
  • Patent Document 1 discloses a method using an adsorbent made of the same material as the reverse osmosis membrane. Moreover, in order to enlarge the contact area of a treated water and a reverse osmosis membrane, the patent document 2 using a fibrous polymer and a ceramic porous body is disclosed.
  • a reverse osmosis membrane structure that performs reverse osmosis membrane treatment on water to be treated
  • a first surface into which the water to be treated flows and a first surface from which the water to be treated flows out Two surfaces, a plurality of first flow paths formed side by side in a direction intersecting the longitudinal direction thereof, and a plurality of first flow paths formed side by side in the first flow path and not communicating with the first surface
  • a reverse osmosis membrane structure comprising a reverse osmosis membrane in a partition wall between a path and the second flow path is provided.
  • organic substances in the water to be treated can be efficiently removed, clogging is less likely to occur, the frequency of cleaning and replacement of the reverse osmosis membrane is reduced, the running cost is reduced, and water can be stably supplied.
  • FIG. 1 is a schematic view of a water treatment facility according to an embodiment of the present invention.
  • the water treatment facility separates water tank 2 for temporarily storing sewage primary treated water (treated water), pump 3 for pressurizing treated water, and purified water and sewage into pressurized treated water. And a reverse osmosis membrane module.
  • Temporary sewage treatment water is a series of treatments that removes dust, etc. through a screen, adds fine flocculant such as sand, settles and removes it, and decomposes organic matter using microorganisms. Water.
  • dissolved substances such as salts and dissolved organic substances are contained, and the reverse osmosis membrane module separates into purified water with a small amount of dissolved substances and sewage with concentrated dissolved substances.
  • sewage regeneration treatment is taken as an example, but the reverse osmosis membrane module 1 is also used for seawater desalination, pure water production used for the production of precision electronic equipment such as semiconductors, and advanced water treatment. Can do.
  • FIG. 2 is a side view of an example of the reverse osmosis membrane module 1 used in the sewage treatment apparatus.
  • the reverse osmosis membrane module 1 was a structure having a porous ceramic honeycomb structure 6 having a ceramic honeycomb structure.
  • a ceramic honeycomb structure 6 is accommodated by a filter support 4 in a housing 5 (acrylic storage container) via a gripping member.
  • the support 4 allows water to pass through without resistance, and when water is permeated at 0.1 MPa, the change in position at the center of the long axis is within 5% of the length of the fixed end in the long axis direction. It is only necessary to use a material having a strength, thickness, and holding method, and a material that does not have an eluate to water.
  • mesh spacers such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene, etc.
  • a mesh such as stainless steel or titanium, a punching metal, or the like can be used.
  • a punching metal having a thickness of 1 mm was used as the support 4.
  • the upstream side of the ceramic honeycomb structure 6 has an inflow port through which treated water flows, and the downstream side of the treated water is divided into purified water and sewage. There are two waterways called outlets from which water flows out.
  • FIG. 3 is a top view of the ceramic honeycomb structure 6, FIG. 4 is a perspective view thereof, and FIG. 5 is a cross-sectional view thereof.
  • the ceramic honeycomb structure 6 is formed with a large number of flow paths 9 partitioned by porous partition walls. As shown in the figure, the sealing portions 12 are alternately formed on the end face of the flow path 9 on the side where the treated water flows, so that the water can permeate through the partition walls 7.
  • the flow path in which the sealing part 12 is not formed is referred to as a first flow path 9a, and the flow path in which the sealing part 12 is formed is referred to as a second flow path 21b.
  • the partition wall 7 has a large number of communication holes communicating with the flow paths 9 by holes due to the porosity.
  • the same material as the ceramic honeycomb filter 6, an organic material, an inorganic material, or the like that does not dissolve in water can be used.
  • water paths formed of tubes or the like are connected to the respective flow paths 9. Purified water flows through the water channel connected to the first flow path 9a, and dirty water flows through the water channel connected to the second flow path 9b.
  • the water channels connected to the first flow channel 9a merge, and the water channels connected to the second flow channel 9b merge to flow out of the reverse osmosis membrane module 1.
  • the partition wall 7 is coated with a polymer material 11.
  • the portion where the polymer material 11 is applied is the entire surface of the partition wall 7 and may be on the first flow path 9a side or the second flow path 9b side.
  • the surface of the partition wall 7 is covered with a semipermeable membrane of the polymer material 11 and used as a reverse osmosis membrane.
  • the function of the ceramic honeycomb structure 6 of this example will be described with reference to FIG.
  • the treated water pressurized by the pump 3 reaches the reverse osmosis membrane module 1.
  • the water to be treated that has reached the left side of the drawing proceeds into the ceramic honeycomb structure 6 from the inlet of the first flow path 9a where the sealing portion 12 is not formed.
  • a part of the water to be treated passes through the partition wall 7 to which the polymer material 11 is applied and functions as a reverse osmosis membrane, and flows into the second flow path 9b.
  • the water to be treated that has passed through the reverse osmosis membrane becomes purified water having a reduced dissolved substance concentration, and flows out from the outlet (right side of the drawing) of the second channel.
  • the water to be treated that has not permeated through the partition walls 7 has a high dissolved substance concentration and flows out from the outlet of the first flow path 9a as dirty water.
  • the main body of the partition wall 7 is made of ceramics, has a role as an adsorbent using the physical adsorption phenomenon of ceramics, and adsorbs the dissolved matter contained in the water to be treated that passes therethrough.
  • the polymer material 11 is provided on the second channel 9b side of the partition wall 7, the water to be treated passes through the ceramic partition wall 7 before passing through the polymer material 11 as a reverse osmosis membrane.
  • the ceramic adsorbs the dissolved matter in the water to be treated, clogging of the reverse osmosis membrane can be suppressed and the replacement frequency can be reduced.
  • the partition wall 7 has a coarser mesh and is more durable against clogging. In such a structure, the adsorbent and the reverse osmosis membrane used to prevent clogging of the reverse osmosis membrane are performed in one structure.
  • a method for manufacturing the ceramic honeycomb structure 6 will be described.
  • an ultrafine needle having a micrometer order needle tip used for medical use or the like is used for application of the polymer material 11.
  • a porous film that is denser than the pores on the inner wall of the ceramic filter is formed as necessary.
  • a composite film structure in which a desired polymer film is formed after the formation may be used.
  • This polymer membrane 11 functions as a semipermeable membrane and has a role of a reverse osmosis membrane.
  • a polymer containing a —NH— bond having a high affinity for a carbonyl group, a carboxyl group, or an aromatic ring is preferably used as the reverse osmosis membrane material.
  • the polymer containing a —NH— bond in the repeating unit include polyamide, polyimide, polyurethane, urea resin, polypeptide (protein), polyethyleneimine, polybenzimidazole, and polybenzoxazole.
  • materials containing —NH— bonds in the side chain or main chain can also be used.
  • FIG. 6 shows the chemical structure of the polymer.
  • Examples include polyallylamine and polyvinylamine.
  • those having a carbonyl group or a siloxane structure in the main chain or side chain may be used because of the affinity for —NH— bond and siloxanes.
  • the structure contained in the main chain and the side chain is not limited to one type, and by including a plurality of structures, a wide variety of mixtures contained in water can be adsorbed and the adsorption efficiency can be improved. .
  • polyamide and cellulose acetate can be used, but are not limited thereto.
  • a photocatalyst may be supported on the porous filter or the polymer material in order to decompose the organic matter.
  • a photocatalyst titanium oxide, strontium titanate, zinc oxide, iron oxide, tungsten oxide and the like can be used, but are not limited thereto.
  • the honeycomb structure 6 on which the adsorbent is supported is manufactured as follows. Prepare powders of kaolin, talc, silica, alumina, etc. and make cordierite so that the mass ratio is SiO 2 : 48-52%, Al 2 O 3 : 33-37%, MgO: 12-15% Prepare a raw material powder, add a binder such as methylcellulose, hydroxypropylmethylcellulose, and a lubricant to this powder, mix thoroughly in a dry process, add a specified amount of water, and perform sufficient kneading to plasticize the ceramic clay. Create Next, the clay is extruded using an extrusion mold, cut, and dried to obtain a dried body having a honeycomb structure.
  • a binder such as methylcellulose, hydroxypropylmethylcellulose, and a lubricant
  • the outer peripheral portion of the dried body is removed by processing, and the flow path located on the outer periphery does not have a partition wall with the outside, thereby forming a honeycomb structure having a concave groove that opens to the outside and extends in the axial direction.
  • a dried body having a honeycomb structure was obtained.
  • a coating agent containing cordierite particles and colloidal silica is applied to the flow path that opens to the outside and is fired.
  • the cordierite-type ceramic honeycomb structure 6 is formed with a large number of flow paths.
  • the outer diameter (diameter) is 5.66 inches
  • the total length is 6 inches
  • the partition wall thickness is 0.32 mm
  • the partition wall pitch is 1.57 mm
  • the initial pressure loss is 0.85 mmAq (at 7). 0.5 Nm 3 / min).
  • patent document 5 as an example of the manufacturing method of a ceramic honeycomb filter.
  • polyamide was dissolved in N-methylpyrrolidone to prepare a 0.5% polyamide NMP solution.
  • Polyamide is obtained by polymerizing 4,4'-oxydianiline and isophthaloyl dichloride as monomers.
  • this polymer solution 14 was put in a beaker 13, impregnated with a ceramic filter, and polyamide was absorbed into the ceramic filter and applied.
  • the ceramic filter was pulled up.
  • the polymer material was applied to the inside of the flow path with the needle described above. Thereafter, it was dried in an oven at 130 ° C. for 24 hours.
  • Example 2 will be described with reference to FIG.
  • the difference between the present embodiment and the first embodiment is that the intermediate sealing portion 10 is provided and that the polymer material 11 is formed only on the partition wall 7 on the downstream side of the intermediate sealing portion 10. is there.
  • a sealing portion 12 is provided at the upstream end of the first flow path 9a.
  • the intermediate sealing part 10 exists in the upstream of the 2nd flow path 9b, and the 3rd flow path 9c is the upstream of the same hole.
  • the function of the ceramic structure 6 of the present embodiment will be described with reference to FIG.
  • the treated water pressurized by the pump 3 reaches the reverse osmosis membrane module 1.
  • the water to be treated that has reached the left side of the drawing proceeds into the ceramic structure 6 from the inlet of the third flow path 9 c where the sealing portion 12 is not formed. Since the third flow path 9c is blocked by the intermediate sealing portion 10, almost all of the inflowed water to be treated permeates through the partition wall 7 where no polymer material is formed, and the first flow It flows into the path 9a. At this time, organic substances that cause clogging as a reverse osmosis membrane are adsorbed by the ceramics constituting the partition wall 7. Moreover, since the pores of the ceramic forming the partition are larger than the pores of the reverse osmosis membrane, the water to be treated can pass through the partition with a relatively small resistance.
  • the treated water that has flowed into the first flow path follows the same path as in the first embodiment. Specifically, a part of the water to be treated passes through the partition wall 7 to which the polymer material 11 is applied and functions as a reverse osmosis membrane, and flows into the second flow path 9b. The water to be treated that has passed through the reverse osmosis membrane becomes purified water having a reduced dissolved substance concentration, and flows out from the second flow path 9b. On the other hand, the water to be treated that has not permeated through the partition walls 7 has a high dissolved substance concentration and flows out through the first flow path 9a as sewage.
  • the dissolved water is adsorbed in the partition wall 7 that passes when the water to be treated that has flowed into the reverse osmosis membrane module moves from the third flow path 9c to the first flow path 9a. Adhesion of the dissolved matter on the reverse osmosis membrane surface is reduced, an increase in water resistance of the reverse osmosis membrane can be suppressed, and the frequency of replacement of the reverse osmosis membrane structure can be reduced.
  • Example 3 will be described with reference to FIG.
  • the difference between the present embodiment and the second embodiment is that the polymer material 11 is also formed on the partition wall 7 upstream of the intermediate sealing portion 10 in the present embodiment.
  • the thickness of the polymer material 11 is different. That is, a polymer film having two roles is provided depending on the method of applying a polymer material to the ceramic filter.
  • a polymer material that adsorbs and removes organic matter is removed from the surface of the partition wall and the surface of the pores of 5 to 50 ⁇ m inside.
  • the entire surface or a part of the film is applied with a thickness that does not fill the pores inside the partition walls, preferably 100 nm or less.
  • the polymer film 11 since the polymer film 11 is thin, it becomes a rough film due to the influence of the pores of the ceramic partition walls 7.
  • dissolved substances such as organic substances permeate through the pores of the polymer material 11 and do not function as a reverse osmosis film, but function as an adsorbing substance that adsorbs the dissolved substance.
  • the film thickness along the channel 9 is formed on the surface of the partition wall 7 as in the first and second embodiments. Is applied to form a polymer film having a thickness of 100 to 300 nm. In this case, when the polymer material 11 is thick, the influence of the pores of the ceramic is reduced, and a dense film can be obtained. If necessary, a composite film structure in which a desired polymer film is formed after forming a porous film denser than the pores on the inner wall of the ceramic filter 6 may be used. This polymer membrane functions as a semipermeable membrane and has a role of a reverse osmosis membrane.
  • the ceramic partition wall 7 also adsorbs the lysate upstream of the reverse osmosis membrane and suppresses clogging of the reverse osmosis membrane, thereby extending the life.
  • the reverse osmosis membrane and the material are Since they are the same or similar, it is easy to adsorb dissolved substances that cause clogging of the reverse osmosis membrane, and the effect of reducing the frequency of replacement of the reverse osmosis membrane is increased.
  • the upstream polymer film 11 and the downstream polymer film may be the same material or different materials. The same material is convenient for manufacturing.
  • the upstream polymer film is more water-repellent and the downstream polymer film 11 is more hydrophilic, the adsorbing power of organic substances on the upstream polymer film 11 acting as an adsorbing material. And the organic matter is less likely to adhere to the polymer membrane 11 on the downstream side that functions as a reverse osmosis membrane.
  • the water to be treated that has flowed into the reverse osmosis membrane module is dissolved in the partition wall 7 that passes when moving from the third flow path 9c to the first flow path 9a. Since the substance is adsorbed, the adhesion of the dissolved substance to the reverse osmosis membrane surface is reduced.
  • the polymer material 11 on the ceramic of the partition wall 7 the adsorbing power of the dissolved material is increased, and an increase in water flow resistance of the reverse osmosis membrane can be suppressed. Can be reduced.
  • Example 2 both the ceramic structure according to Example 2 and the ceramic honeycomb structure according to Example 3 had less dissolved organic matter after filtration than before filtration. Moreover, compared with Example 2 with no polyamide modification, Example 3 with polyamide modification was able to remove organic substances in the low molecular region.
  • any ceramic honeycomb structure has a TOC concentration ⁇ 236 mg / L after filtration as compared to before filtration, and the adsorbent has an organic substance removing effect.
  • SYMBOLS 1 Reverse osmosis membrane module, 2 ... Water storage tank, 3 ... Pump, 4 ... Filter support body, 5 ... Filter holding container (filter), 6 ... Ceramic structure ( Ceramic filter), 7 ... partition wall, 8 ... channel sealing part, 9 ... channel, 10 ... intermediate sealing part, 11 ... polymer, 13 ... beaker, 14 ..Polymer solution.

Abstract

Dans des membranes d'osmose inverse utilisées pour le traitement tertiaire en recyclage d'eau résiduaire, dessalement d'eau de mer, etc., l'adsorption de substances organiques dissoutes dans l'eau sur la surface de la membrane d'osmose inverse et provoquant le colmatage, réduisant le volume d'eau perméée et augmentant la fréquence d'échange du module membranaire d'osmose inverse est un problème. Pour enlever efficacement les substances organiques dissoutes et résoudre ledit problème, selon l'invention un filtre céramique à structure en nid-d'abeilles ayant une grande surface d'adsorption est utilisé ; les pores communicants du filtre en céramique sont utilisés comme canaux de circulation ; et certains des canaux de circulation sont fermés et l'eau devant être traitée est amenée à passer à travers les parois de séparation et est traitée par la paroi de séparation avec une membrane d'osmose inverse, qui a un polymère de masse moléculaire élevée contenant des groupes amides. Du fait que l'eau devant être traitée est filtrée lorsqu'elle passe à travers les parois de séparation des canaux de circulation, elle devient plus pure et l'adhérence de substances organiques aux membranes d'osmose inverse peut être réduite. En outre, dans la mesure où les canaux de circulation sont larges, de l'ordre de quelques micromètres, le colmatage n'a pas lieu facilement.
PCT/JP2011/005919 2010-10-29 2011-10-24 Structure de membrane d'osmose inverse pour le traitement de l'eau et module membranaire d'osmose inverse WO2012056668A1 (fr)

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JP2010242965A JP2012091150A (ja) 2010-10-29 2010-10-29 水処理用逆浸透膜構造体及び逆浸透膜モジュール
JP2010-242965 2010-10-29

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WO2015000801A1 (fr) * 2013-07-04 2015-01-08 Basf Se Membranes à canaux multiples
WO2016112122A1 (fr) * 2015-01-06 2016-07-14 Nanostone Water Inc. Ensemble membrane à dispositif de capuchon d'extrémité et procédés associés
KR101691612B1 (ko) * 2016-07-25 2017-01-02 (주) 시온텍 고농도 알칼리성 수소수 생성장치

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CN104209021A (zh) * 2014-09-03 2014-12-17 北京林业大学 一种zif-8型金属-有机骨架材料改性的芳香族聚酰胺膜的制备方法
WO2016159531A1 (fr) * 2015-04-01 2016-10-06 한국에너지기술연구원 Dispositif d'osmose de type à réseau

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WO2015000801A1 (fr) * 2013-07-04 2015-01-08 Basf Se Membranes à canaux multiples
WO2016112122A1 (fr) * 2015-01-06 2016-07-14 Nanostone Water Inc. Ensemble membrane à dispositif de capuchon d'extrémité et procédés associés
KR101691612B1 (ko) * 2016-07-25 2017-01-02 (주) 시온텍 고농도 알칼리성 수소수 생성장치

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