CN108744984A - A kind of wound membrane element - Google Patents
A kind of wound membrane element Download PDFInfo
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- CN108744984A CN108744984A CN201810506388.0A CN201810506388A CN108744984A CN 108744984 A CN108744984 A CN 108744984A CN 201810506388 A CN201810506388 A CN 201810506388A CN 108744984 A CN108744984 A CN 108744984A
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- water
- water flow
- guiding screen
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- center
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- 239000012528 membrane Substances 0.000 title claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 182
- 238000004519 manufacturing process Methods 0.000 claims abstract description 43
- 238000000746 purification Methods 0.000 claims abstract description 41
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 12
- 239000002202 Polyethylene glycol Substances 0.000 claims description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 9
- 229920001223 polyethylene glycol Polymers 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005374 membrane filtration Methods 0.000 claims description 4
- -1 polyethylene pyrrole Polymers 0.000 claims description 4
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000001223 reverse osmosis Methods 0.000 claims description 3
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 3
- 238000000108 ultra-filtration Methods 0.000 claims description 3
- 239000012498 ultrapure water Substances 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 2
- 239000003431 cross linking reagent Substances 0.000 claims description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims 2
- 150000001336 alkenes Chemical class 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 150000003839 salts Chemical class 0.000 abstract description 6
- 238000011010 flushing procedure Methods 0.000 abstract description 3
- 230000010148 water-pollination Effects 0.000 abstract description 3
- 229920002521 macromolecule Polymers 0.000 abstract description 2
- 102000010637 Aquaporins Human genes 0.000 description 4
- 108010063290 Aquaporins Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 241000196171 Hydrodictyon reticulatum Species 0.000 description 1
- 238000006136 alcoholysis reaction Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- 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
- B01D63/08—Flat membrane modules
-
- 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
- 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
- B01D61/027—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
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/145—Ultrafiltration
-
- 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
- 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
-
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/04—Specific sealing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/08—Flow guidance means within the module or the apparatus
Abstract
The invention discloses a kind of wound membrane elements, including center water producing pipe, and it is wrapped at least one set of water purification diaphragm group on the water producing pipe of center, the water purification diaphragm group includes a production water flow-guiding screen, two Separation membranes and a raw water flow-guiding screen, it is raw water runner between two Separation membrane inner surfaces, it is arranged in raw water runner for production water flow passage, the raw water flow-guiding screen between the outer surface of two Separation membranes, the production water flow-guiding screen is arranged in producing water flow passage.The more traditional wound membrane element of the present invention differ in membrane component raw water flow-guiding screen and production water flow-guiding screen carry out hydrophilic macromolecule it is coating modified, it increases raw water flow-guiding screen and produces the hydrophily of water flow-guiding screen, the effective water that improves is to the flushing effect of membrane surface and the water conservancy diversion speed of water purification, come reach improve membrane component salt rejection rate and flux, increase the purpose of the stain resistance of membrane component.
Description
Technical field
The present invention relates to a kind of membrane component, belong to filter technology field in purifier.
Background technology
The principle of membrane filtration is the process sieved using the pore size of film, is driving with the pressure difference of film both sides
Power, using film as filter medium, stoste flows through film surface under pressure, and the micropore of film surface only allows water and small molecule object
Matter by by become permeate, and in stoste grain size be more than film surface micropore substance be then trapped within film liquid feeding side become it is dense
Contracting liquid realizes the separation and concentration of stoste.
For existing wound membrane element generally use plastic wire as aquaporin filter is given, the purpose is to provide one for water inlet
As close possible to the access of turbulent flow, makes to be parallel to membrane component direction between rolling diaphragm into water and fully flow, and in production flow
Using plastic wire as production aquaporin in road, production water flows into central tube along longitudinal circulation perpendicular to membrane component.It is more in the market
Number wound membrane elements using producing the production water in water flow passage by the way of the vertical wraparound one-way flow of membrane component, produce water ring around
Membrane component to flow to central tube and finally collect and be directed to the production water collection pipe outside membrane component by central tube, because
This, the flux magnitude of membrane component is directly influenced to the material of the production aquaporin in aquaporin filter and production water flow passage.
With extensive utilization of the membrane component in industrial production and the water treatment procedure of daily life, people are for membrane component
Performance requirement be also constantly to improve, be contemplated for high throughput, equipment with high desalinization, low consumption and the strong membrane component of stain resistance.
And processing scheme conventional at present is so that membrane component is had equipment with high desalinization, low consumption and resistant by improving the performance of diaphragm
The advantages that metachromia is strong, but these processing modes are with the continuous promotion of diaphragm performance itself, effect increasingly unobvious.
Invention content
In view of the problems of the existing technology, the present invention proposes a kind of wound membrane element effectively improving permeant flux.
The present invention solves the technical solution of the above technical problem：A kind of wound membrane element, including center water producing pipe, and twine
At least one set of water purification diaphragm group being wound on the water producing pipe of center；The water purification diaphragm group include a production water flow-guiding screen, two points
From diaphragm and a raw water flow-guiding screen；It is raw water runner between two Separation membrane inner surfaces, two Separation membranes
It is production water flow passage between outer surface；The raw water flow-guiding screen is arranged in raw water runner；The production water flow-guiding screen setting is being produced
In water flow passage；The center water producing pipe is equipped with axial endoporus, and tube wall is equipped with multiple limbers for being connected to its endoporus；It is described
Endoporus one end of center water producing pipe is closed, and the other end is equipped with water purification outlet, and water purification outlet sealing ring is equipped at the water purification outlet.
Further, flow direction of the raw water in water purification diaphragm group is parallel with the axis of center water producing pipe.
Further, the production water flow passage in every group of water purification diaphragm group is connected to the limbers on the water producing pipe of center.
Further, a part for the production water flow-guiding screen of the water purification diaphragm group or production water flow passage is close to center production water
Pipe, rectangular after the production water flow passage expansion, the limbers of rectangle connection center water producing pipe keeps clear on one side, excess-three
While being closed by adhesive bond.
Further, two Separation membranes Yu center water producing pipe of every group of water purification diaphragm group are produced parallel and close to center
The side of water pipe passes through adhesive bond.
Further, the Separation membrane of the water purification diaphragm group is reverse osmosis membrane or NF membrane or ultrafiltration membrane.
Further, the lateral surface of the water purification diaphragm group is wound with sealant tape, and the outside of the sealant tape is equipped with Y
Type sealing collar.
Further, the raw water flow-guiding screen and production water flow-guiding screen are by the coating modified of water-soluble high-molecular material
's.Specifically comprise the steps of：
S1：A certain amount of water-soluble high-molecular material is added to heating in quantitative ultra-pure water to make it dissolve, after dissolving
It is cooling；
S2：Raw water flow-guiding screen and production water flow-guiding screen are dipped into aqueous solution made from S1 and are taken out after a certain period of time, and is put
Enter baking oven, is taken out after being heated under certain condition；
S3：It soaks in certain density crosslinking agent and catalyst, is heated under the conditions of certain temperature, obtain hydrophilic coating
By raw water flow-guiding screen and production water flow-guiding screen.
Further, the water-soluble high-molecular material includes but not limited to polyvinyl alcohol (PVA), polyethylene glycol (PEG),
Polyethylene pyrrole network alkanone (PVP), polyacrylic acid (PAA), polyethylene glycol oxide (PEO) etc..
Further, the water-soluble high-molecular material should have high temperature water-soluble, and room temperature is insoluble in water, crosslinkable
Property.
Beneficial effects of the present invention：The more traditional wound membrane element of the present invention is differed to the original in membrane component
Water flow-guiding screen and production water flow-guiding screen progress hydrophilic macromolecule are coating modified, increase raw water flow-guiding screen and produce the parent of water flow-guiding screen
It is aqueous, the water conservancy diversion speed of the effective flushing effect and water purification for improving membrane surface water, to reach the desalination for improving membrane component
Rate and flux increase the purpose of the stain resistance of membrane component.The present invention raw water flow-guiding screen has been carried out it is hydrophilically modified, to subtract
Hydrophobic contaminant is lacked to adsorb in the deposition of raw water net and film surface, has increased flushing effect of the raw water to film surface, reduce
The concentration of the brine on diaphragm surface layer, increases the salt rejection rate of membrane component, enhances stain resistance.Produce the hydrophily of water flow-guiding screen
Increase can allow water purification to be more easy to pass through, and be conducive to promote pure water flux.
Description of the drawings
In order to be easier to understand technical scheme of the present invention and beneficial technique effect, by referring to what is be shown in the accompanying drawings
The specific implementation mode of the present invention is described in detail the present invention.These attached drawings, which depict only the typical of the present invention, to be implemented
Mode does not constitute the limitation to protection scope of the present invention, wherein：
Fig. 1 is the structure explanation of the embodiment of the present invention 1.
Fig. 2 is the appearance diagram of the embodiment of the present invention 1.
Fig. 3 is that the structure expansion of the embodiment of the present invention 1 and pure water flow to schematic diagram.
Fig. 4 is that the structure expansion of the embodiment of the present invention 1 and raw water flow to schematic diagram.
In Fig. 1~4：1. center water producing pipe；2. water purification diaphragm group；3. Separation membrane；4. raw water flow-guiding screen；5. producing water water conservancy diversion
Net；6. limbers；7. binder；8. sealant tape；9.Y type sealing rings；10. water purification outlet sealing ring；11. producing water flow passage；12.
Water purification outlet；13. raw water runner.
Specific implementation mode
Embodiment 1
As shown in Figures 1 to 4, the present embodiment provides a kind of wound membrane elements, including center water producing pipe 1, and are wrapped in
At least one set of water purification diaphragm group 2 on the water producing pipe of center；The water purification diaphragm group 2 includes 5, two separation of a production water flow-guiding screen
Diaphragm 3 and a raw water flow-guiding screen 4, the self-control diaphragm doubling that two Separation membranes 3 are long 1m wide 0.32m form；Described two
It is raw water runner 13 between 3 inner surface of Separation membrane, is production water flow passage 11 between the outer surface of two Separation membranes 3；Institute
It states raw water flow-guiding screen 4 to be arranged in raw water runner 13, thickness 0.5mm, length 51cm, width 0.32m；The production water is led
Drift net 5 is arranged in producing water flow passage 11；The center water producing pipe 1 is equipped with axial endoporus, and tube wall is connected to it equipped with multiple
The limbers 6 of endoporus；Endoporus one end of the center water producing pipe 1 is closed, and the other end is equipped with water purification outlet 12, the water purification outlet
Water purification outlet sealing ring 10 is equipped at 12.
Flow direction of the raw water in the water purification diaphragm group 2 is parallel with the axis of the center water producing pipe 1.Every group of water purification
Production water flow passage 11 in diaphragm group 2 is connected to the limbers 6 on center water producing pipe 1.The production water flow-guiding screen of the water purification diaphragm group 2
It 5 or produces the part of water flow passage 11 and is close to center water producing pipe, the production water flow passage 11 is rectangular after being unfolded, during which is connected to
The limbers 6 of heart water producing pipe 1 keeps clear on one side, and excess-three side is bonded by binder 7 and closed.Every group of water purification diaphragm
Side of two Separation membranes 3 of group 2 with center water producing pipe 1 parallel and close to center water producing pipe 1 is bonded by binder 7.
The Separation membrane 3 of the water purification diaphragm group 2 is reverse osmosis membrane or NF membrane or ultrafiltration membrane.In this way, by water purification diaphragm described in five groups
Group 2 is wound into center water producing pipe 1, and outside is sealed with sealant tape 8, and the outside of the sealant tape 8 is equipped with Y types sealing collar 9.Institute
It is by the coating modified of water-soluble high-molecular material to state raw water flow-guiding screen 4 and production water flow-guiding screen 5.It include specifically following step
Suddenly：
S1：The polyvinyl alcohol (PVA) for measuring 1kg alcoholysis degrees 98%, is added in the ultra-pure water of 50KG and is heated to 100 DEG C simultaneously
It stirs to dissolve, dissolves postcooling；
S2：It will be taken out after 1h in the aqueous solution for the PVA that raw water flow-guiding screen and production water flow-guiding screen are dipped into preparation, and be put into baking
Case is taken out after heating 1h under the conditions of 80 DEG C；
S3：After immersing 3% glutaraldehyde and 0.5% aqueous sulfuric acid 30s, 3min is heated under the conditions of 100 DEG C, obtains hydrophily
Coating by raw water flow-guiding screen and production water flow-guiding screen.
The water-soluble high-molecular material includes but not limited to polyvinyl alcohol (PVA), polyethylene glycol (PEG), polyethylene pyrrole
Network alkanone (PVP), polyacrylic acid (PAA), polyethylene glycol oxide (PEO).
The hydrophilic coating material should have high temperature water-soluble, and room temperature is insoluble in water, crosslinkable property.
The test situation of the wound membrane element of the present embodiment is as follows：
Use certain city municipal tap water straight as raw water the membrane component of the two panels 1812-50G rolled without coating treatment
Test is connect, test result is under the conditions of 0.41MPa pressure, 20% rate of recovery：When 25 DEG C of normal temperatures, water flux 165mL/
Min, salt rejection rate 98%；The membrane component water flux of the two panels 1812-50G rolled by coating treatment is 190mL/min, desalination
Rate 99%.Result is shown after follow-on test 180 days：Non-modified membrane component water flux declines 35%, salt rejection rate 95%；It applies
The modified membrane component water flux of layer declines 5%, salt rejection rate 98%.Show that raw water flow-guiding screen and production water flow-guiding screen change through hydrophilic coating
After property, water flux, salt rejection rate and the anti-pollution ability of film are improved in various degree.
Above specific embodiment has carried out further specifically the purpose of the present invention, technical solution and advantageous effect
It is bright, it should be understood that these are only specific embodiments of the present invention, it is not intended to restrict the invention, it is all in the present invention
Spirit and principle within, any modification, equivalent substitution, improvement and etc. done, should be included in protection scope of the present invention it
It is interior.
Claims (4)
1. a kind of wound membrane element, including center water producing pipe, and at least one set of water purification diaphragm for being wrapped on the water producing pipe of center
Group；The water purification diaphragm group includes a production water flow-guiding screen, two Separation membranes and a raw water flow-guiding screen；Two separation
It is raw water runner between diaphragm inner surface, is production water flow passage between the outer surface of two Separation membranes；The raw water water conservancy diversion
Net is arranged in raw water runner；The production water flow-guiding screen is arranged in producing water flow passage；The center water producing pipe is equipped with the interior of axial direction
Hole, and tube wall is equipped with multiple limbers for being connected to its endoporus；Endoporus one end of the center water producing pipe is closed, and the other end is equipped with
Water purification outlet is equipped with water purification outlet sealing ring at the water purification outlet.
Flow direction of the raw water in water purification diaphragm group is parallel with the axis of center water producing pipe.
Production water flow passage in every group of water purification diaphragm group is connected to the limbers on the water producing pipe of center.
The production water flow-guiding screen of the water purification diaphragm group or the part for producing water flow passage are close to center water producing pipe, the production water flow passage
Rectangular after expansion, the limbers of rectangle connection center water producing pipe keeps clear on one side, and excess-three side is viscous by binder
Close closing.
Two Separation membranes of every group of water purification diaphragm group are parallel with center water producing pipe, and equal close to the side of center water producing pipe
Pass through adhesive bond.
The Separation membrane of the water purification diaphragm group is reverse osmosis membrane or NF membrane or ultrafiltration membrane.
The lateral surface of the water purification diaphragm group is wound with sealant tape, and the outside of the sealant tape is equipped with Y type sealing collars.
Wherein, the production water flow-guiding screen in every group of Separation membrane group has carried out hydrophilic coating；Every group of Separation membrane group
In raw water flow-guiding screen carried out hydrophilic coating.
2. a kind of wound membrane element according to claim 1, which is characterized in that the raw water flow-guiding screen and production water flow-guiding screen
It is by the coating modified of water-soluble high-molecular material.Specifically comprise the steps of：
S1：A certain amount of water-soluble high-molecular material is added to heating in quantitative ultra-pure water to make it dissolve, dissolves postcooling；
S2：Raw water flow-guiding screen and production water flow-guiding screen are dipped into aqueous solution made from S1 and are taken out after a certain period of time, and is put into baking
Case takes out after heating under certain condition；
S3：It soaks in certain density crosslinking agent and catalyst, is heated under the conditions of certain temperature, obtain hydrophilic coating will be former
Water flow-guiding screen and production water flow-guiding screen.
3. a kind of wound membrane element according to claim 2, which is characterized in that the water-soluble high-molecular material include but
It is not limited to polyvinyl alcohol (PVA), polyethylene glycol (PEG), polyethylene pyrrole network alkanone (PVP), polyacrylic acid (PAA), polyoxyethylene
Alkene (PEO) etc..
4. a kind of wound membrane element according to claim 2, it is characterised in that：The water-soluble high-molecular material should have
High temperature is water-soluble, and room temperature is insoluble in water, crosslinkable property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810506388.0A CN108744984A (en) | 2018-05-16 | 2018-05-16 | A kind of wound membrane element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810506388.0A CN108744984A (en) | 2018-05-16 | 2018-05-16 | A kind of wound membrane element |
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| Publication Number | Publication Date |
|---|---|
| CN108744984A true CN108744984A (en) | 2018-11-06 |
Family
ID=64005167
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|---|---|---|---|
| CN201810506388.0A Pending CN108744984A (en) | 2018-05-16 | 2018-05-16 | A kind of wound membrane element |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114082310A (en) * | 2022-01-20 | 2022-02-25 | 湖南叶之能科技有限公司 | Roll type membrane element and preparation method and application thereof |
| CN114713031A (en) * | 2022-04-19 | 2022-07-08 | 杭州卧特松环保科技有限公司 | Reverse osmosis membrane layer assembly and reverse osmosis membrane element resistant to high COD and impurity pollution |
| CN115430294A (en) * | 2022-08-03 | 2022-12-06 | 宁波方太厨具有限公司 | Roll type nanofiltration membrane element capable of efficiently removing trace heavy metals |
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| CN105195027A (en) * | 2015-09-10 | 2015-12-30 | 中国海洋大学 | Forward osmosis membrane based on interface hydrophilic modification and preparation method of forward osmosis membrane |
| CN107050927A (en) * | 2017-04-27 | 2017-08-18 | 苏州捷尔沃科技有限公司 | Composite structured oil-water separation mesh film and preparation method thereof |
| CN208694721U (en) * | 2018-05-16 | 2019-04-05 | 南京帝膜净水材料开发有限公司 | A kind of wound membrane element |
-
2018
- 2018-05-16 CN CN201810506388.0A patent/CN108744984A/en active Pending
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|---|---|---|---|---|
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| CN101306327A (en) * | 2008-07-08 | 2008-11-19 | 大连理工大学 | Spiral carbon membrane and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114082310A (en) * | 2022-01-20 | 2022-02-25 | 湖南叶之能科技有限公司 | Roll type membrane element and preparation method and application thereof |
| CN114082310B (en) * | 2022-01-20 | 2022-04-19 | 湖南叶之能科技有限公司 | Roll type membrane element and preparation method and application thereof |
| CN114713031A (en) * | 2022-04-19 | 2022-07-08 | 杭州卧特松环保科技有限公司 | Reverse osmosis membrane layer assembly and reverse osmosis membrane element resistant to high COD and impurity pollution |
| CN115430294A (en) * | 2022-08-03 | 2022-12-06 | 宁波方太厨具有限公司 | Roll type nanofiltration membrane element capable of efficiently removing trace heavy metals |
| CN115430294B (en) * | 2022-08-03 | 2024-04-02 | 宁波方太厨具有限公司 | Rolling nanofiltration membrane element capable of efficiently removing trace heavy metals |
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