CN108744984A - A kind of wound membrane element - Google Patents
A kind of wound membrane element Download PDFInfo
- Publication number
- 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
- Authority
- CN
- China
- Prior art keywords
- water
- water flow
- guiding screen
- production
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108744984A true CN108744984A (en) | 2018-11-06 |
Family
ID=64005167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810506388.0A Pending CN108744984A (en) | 2018-05-16 | 2018-05-16 | A kind of wound membrane element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108744984A (en) |
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 that can efficiently remove trace heavy metals |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107568A (en) * | 1985-11-01 | 1987-04-29 | 孟山都公司 | Polymer surface modification and implementation method thereof |
| CN101306327A (en) * | 2008-07-08 | 2008-11-19 | 大连理工大学 | A kind of rolled carbon membrane and preparation method thereof |
| CN104138714A (en) * | 2014-08-22 | 2014-11-12 | 江苏正本净化节水科技实业有限公司 | Spiral-wound film component |
| 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
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107568A (en) * | 1985-11-01 | 1987-04-29 | 孟山都公司 | Polymer surface modification and implementation method thereof |
| CN101306327A (en) * | 2008-07-08 | 2008-11-19 | 大连理工大学 | A kind of rolled carbon membrane and preparation method thereof |
| CN104138714A (en) * | 2014-08-22 | 2014-11-12 | 江苏正本净化节水科技实业有限公司 | Spiral-wound film component |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 陈观文主编, 中国轻工业出版社 * |
Cited By (5)
| 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 |
| 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 that can efficiently remove trace heavy metals |
| CN115430294B (en) * | 2022-08-03 | 2024-04-02 | 宁波方太厨具有限公司 | Spiral nanofiltration membrane element that can efficiently remove trace heavy metals |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI422425B (en) | Method of manufacturing porous multilayered hollow fiber | |
| CN106268355B (en) | A kind of super close/hydrophobic double property polymer films of asymmetry and preparation method thereof | |
| CN100446845C (en) | A blend film of polysulfone and polyvinyl polymer, its preparation method and application | |
| CN105413472B (en) | A kind of membrane for water treatment component | |
| CN108744984A (en) | A kind of wound membrane element | |
| CN104877342A (en) | Charged Porous Polymeric Membrane With High Void Volume | |
| WO2012026373A1 (en) | Hollow fiber type reverse osmosis membrane and process for production thereof | |
| TW200906477A (en) | Flat film element for filtration and flat film filtrating modules | |
| CN108744985A (en) | A kind of wound membrane element | |
| CN101513593B (en) | Hydrophilic polyvinyl chloride membrane and preparation method thereof | |
| CN108421415A (en) | A kind of wound membrane element | |
| Tang et al. | Leaf vein-inspired microfiltration membrane based on ultrathin nanonetworks | |
| JPS5922605A (en) | Filter membrane and production thereof | |
| CN103055701B (en) | Cleanable security filter and its application | |
| CN208694721U (en) | A kind of wound membrane element | |
| CN108421417A (en) | A kind of resistant to pollution wound membrane element | |
| CN105561805B (en) | A kind of composite nanometer filtering film and its preparation method and application | |
| CN208678834U (en) | A kind of resistant to pollution wound membrane element | |
| CN202191847U (en) | Long-flow tubular microfiltration membrane assembly | |
| CN105413473B (en) | A kind of water process membrane stack | |
| CN208694726U (en) | A kind of wound membrane element | |
| CN1415407A (en) | Method for preparing ultra filtration membrane in hollow fiber made from PVC with high flux | |
| CN208542035U (en) | A kind of wound membrane element | |
| CN205241292U (en) | Aeration endless water treatment membrane module | |
| CN104826504A (en) | Preparation method of super stain-resistant braided tube reinforced polyaniline porous hollow fiber membrane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181106 |
|
| WD01 | Invention patent application deemed withdrawn after publication |