CN106606929A - Anti-pollution reverse osmosis membrane preparation method and preparation device - Google Patents
Anti-pollution reverse osmosis membrane preparation method and preparation device Download PDFInfo
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- CN106606929A CN106606929A CN201611122503.1A CN201611122503A CN106606929A CN 106606929 A CN106606929 A CN 106606929A CN 201611122503 A CN201611122503 A CN 201611122503A CN 106606929 A CN106606929 A CN 106606929A
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- Prior art keywords
- reverse osmosis
- osmosis membrane
- preparation
- pollution
- pretreatment
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Classifications
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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
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0006—Organic membrane manufacture by chemical reactions
-
- 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
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- 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
- B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
- B01D71/78—Graft polymers
-
- 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
- B01D2323/00—Details relating to membrane preparation
- B01D2323/38—Graft polymerization
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/48—Antimicrobial properties
-
- 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
Abstract
The invention discloses an anti-pollution reverse osmosis membrane preparation method comprises the following steps: carrying out plasma treatment of a reverse osmosis membrane substrate; carrying out a reaction in a trimethoxy silane coupling agent pretreatment liquid, wherein the pretreatment liquid is a trimethoxy silane coupling agent; then treating by an anti-pollution coating liquid, wherein the anti-pollution coating liquid is a perfluoropolyether solution with heptadecafluorodecyl triethoxysilane as a solute and/or tridecafluorooctyltriethoxysilane as a solvent; and then carrying out drying treatment on the reverse osmosis membrane substrate, to obtain an anti-pollution reverse osmosis membrane. The invention also discloses an anti-pollution reverse osmosis membrane preparation device. The prepared reverse osmosis membrane has the advantages of good pure water flux and desalination rate, high-efficiency and anti-pollution effects are achieved, and the service life of the reverse osmosis membrane is prolonged.
Description
Technical field
The present invention relates to water process and concentrating and separating technical field, refer in particular to a kind of preparation side of anti-pollution reverse osmosis membrane
Method and preparation facilitiess.
Background technology
Reverse osmosis membrane is that one kind simulates artificial semipermeable membrane made by biological semi-permeable film, generally uses macromolecular material and makes,
Such as cellulose acetate membrane, aromatic polyhydrazide film or aromatic polyamide film.The diameter of reverse osmosis membrane surface micropore typically exists
Between 0.1-1nm, the chemical constitution of the size and film of permeability itself is relevant.Reverse osmosis membrane can be used to separating, concentrate, purification etc.
Chemical engineering unit operation, is mainly used in pure water preparation and water treatment field.
Reverse osmosis membrane isolates solvent with pressure differential as motive force, from solution, applies pressure to the feed liquid of film side, when
When pressure exceedes its osmotic pressure, solvent makees inverse osmosis against the direction of naturally osmotic, so as to the low-pressure side in film is obtained
The penetrating fluid crossed, high-pressure side obtains concentrated solution.Various inorganic ionss, colloidal substance and macromole in reverse osmosis membrane energy trap water
Solute, so as to obtain pure water.
However, in prior art, reverse osmosis membrane such as cellulose acetate membrane, aromatic polyhydrazide film or aromatic polyamide film
It is oxidized easily, service life is shorter, meanwhile, not with antibiotic and sterilizing effect.
In view of this, the present invention develops a kind of preparation method and the preparation of anti-pollution reverse osmosis membrane for overcoming the defect
Thus device, this case produce.
The content of the invention
It is an object of the invention to provide the preparation method and preparation facilitiess of a kind of anti-pollution reverse osmosis membrane, the method preparation
Reverse osmosis membrane there is good pure water flux and salt rejection rate, realize the effect of efficient anti-soil, extend the use longevity of reverse osmosis membrane
Life.
A kind of preparation method of anti-pollution reverse osmosis membrane, comprises the following steps：Will be reverse osmosis membrane base material plasma treated
Afterwards；React in trimethoxysilane coupling agent pretreatment fluid, pretreatment fluid is trimethoxysilane coupling agent；Again through anti-
Dirty coating liquid is processed, and it is 17 fluorine decyl triethoxysilanes and/or ten trifluoro octyl group triethoxies that anti-soil coating liquid is solute
The solution of silane and solvent for PFPE；Then drying and processing is carried out to reverse osmosis membrane base material, obtains anti-soil reverse osmosis membrane.
Further, reverse osmosis membrane base material is aromatic polyamide class reverse osmosis membrane.
Further, the gas that plasma treatment is passed through is oxygen, and throughput is 30-40sccm, and purity is more than 99.9%.
Further, reverse osmosis membrane base material with the speed of 0.2-0.5m/min by carrying out Surface Treatment with Plasma.
Further, in pretreatment fluid, Solute mass volumetric concentration is 10-20%.
Further, reverse osmosis membrane base material with the speed of 0.2-0.5m/min through anti-soil coating liquid.
Further, drying temperature is 50-60 DEG C.
A kind of preparation facilitiess of anti-pollution reverse osmosis membrane, including plasma apparatus, pretreatment-liquid containers, anti-soil coating liquid
Container and baking oven；The plasma apparatus, pretreatment-liquid containers, anti-soil coating liquid container and baking oven are sequentially arranged, pretreatment fluid
Trimethoxysilane coupling agent is housed in container, anti-soil coating liquid container is 17 fluorine decyl triethoxysilanes equipped with solute
And/or tridecafluoro-n-octyltriethoxysilane and solvent are the solution of PFPE；Reverse osmosis membrane base material Jing plasmas successively
Equipment, pretreatment-liquid containers, anti-soil coating liquid container and baking oven.
Further, also including rinsing and air-dried mechanism, rinsing is arranged on baking oven rear end with air-dried mechanism.
After such scheme, the present invention is carried out after plasma modification to reverse osmosis membrane substrate surface so as to which surface is formed
Hydroxyl or carboxyl-reactive group, are then reacted with trimethoxysilane coupling agent, are then occurred with anti-soil coating liquid again anti-
Should, anti-soil coating liquid for solute for 17 fluorine decyl triethoxysilanes and/or tridecafluoro-n-octyltriethoxysilane solvent
For the solution of PFPE, i.e., fluorine-containing low surface energy structures are obtained by grafting process.Contain low surface mass i.e. in film surface
Can prevent pollutant from adhering in film surface deposition, play effective antipollution purpose, extend the service life of reverse osmosis membrane.
The reaction scheme of the present invention is as follows：
Description of the drawings
Fig. 1 is preparation facilitiess schematic diagram of the present invention；
Fig. 2 is the structural representation of preparation facilitiess plasma apparatus of the present invention.
Label declaration
1 power electrode 11 of plasma apparatus
12 anti-soil of ground electrode coats liquid container 2
3 reverse osmosis membrane base material 4 of baking oven
Rinsing and air-dried mechanism 5
Specific embodiment
The present invention is described in detail below in conjunction with drawings and the specific embodiments.
Embodiment one
A kind of preparation method of anti-pollution reverse osmosis membrane, comprises the following steps：
Plasma modification process
Reverse osmosis membrane base material is passed through into gas by plasma apparatus of the polar plate spacing as 2mm with the speed of 0.2m/min
Oxygen of the atmosphere for 30sccm, the frequency of radio-frequency power supply used by plasma apparatus are 8KHz.
Film surface grafting pretreatment
Plasma treated reverse osmosiss base material is entered by trimethoxysilane coupling agent with the speed of 0.2m/min again
Row film surface grafting pretreatment.
Low-surface energy substance is grafted
Jing trimethoxysilane coupling agents are carried out into the reverse osmosis membrane of film surface grafting pretreatment again with the speed of 0.2m/min
Spend by the 17 fluorine decyl triethoxysilanes containing 10% mass fraction, solvent for use is PFPE.
Drying and processing
The reverse osmosiss of Jing surface graft modifications are processed by the baking oven section that temperature is 50 DEG C with the speed of 0.2m/min.
Winding
The reverse osmosis membrane of drying process is wound after air cooling system and obtains final product anti-pollution reverse osmosis membrane.
Embodiment two
A kind of preparation method of anti-pollution reverse osmosis membrane, comprises the following steps：
Plasma modification process
Reverse osmosis membrane base material is passed through into gas by plasma apparatus of the polar plate spacing as 2mm with the speed of 0.5m/min
Oxygen of the atmosphere for 30sccm, the frequency of radio-frequency power supply used by plasma apparatus are 8KHz.
Film surface grafting pretreatment
Plasma treated reverse osmosiss base material is entered by trimethoxysilane coupling agent with the speed of 0.5m/min again
Row film surface grafting pretreatment.
Low-surface energy substance is grafted
Jing trimethoxysilane coupling agents are carried out into the reverse osmosis membrane of film surface grafting pretreatment again with the speed of 0.5m/min
Spend by the 17 fluorine decyl triethoxysilanes containing 10% mass fraction, solvent for use is PFPE.
Drying and processing
The reverse osmosiss of Jing surface graft modifications are processed by the baking oven section that temperature is 50 DEG C with the speed of 0.5m/min.
Winding
The reverse osmosis membrane of drying process is wound after air cooling system and obtains final product anti-pollution reverse osmosis membrane.
Embodiment three
A kind of preparation method of anti-pollution reverse osmosis membrane, comprises the following steps：
Plasma modification process
Reverse osmosis membrane base material is passed through into gas by plasma apparatus of the polar plate spacing as 2mm with the speed of 0.2m/min
Oxygen of the atmosphere for 30sccm, the frequency of radio-frequency power supply used by plasma apparatus are 8KHz.
Film surface grafting pretreatment
Plasma treated reverse osmosiss base material is entered by trimethoxysilane coupling agent with the speed of 0.2m/min again
Row film surface grafting pretreatment.
Low-surface energy substance is grafted
Jing trimethoxysilane coupling agents are carried out into the reverse osmosis membrane of film surface grafting pretreatment again with the speed of 0.2m/min
Spend by the tridecafluoro-n-octyltriethoxysilane containing 10% mass fraction, solvent for use is PFPE.
Drying and processing
The reverse osmosiss of Jing surface graft modifications are processed by the baking oven section that temperature is 50 DEG C with the speed of 0.2m/min.
Winding
The reverse osmosis membrane of drying process is wound after air cooling system and obtains final product anti-pollution reverse osmosis membrane.
Example IV
A kind of preparation method of anti-pollution reverse osmosis membrane, comprises the following steps：
Plasma modification process
Reverse osmosis membrane base material is passed through into gas by plasma apparatus of the polar plate spacing as 3mm with the speed of 0.3m/min
Oxygen of the atmosphere for 30sccm, the frequency of radio-frequency power supply used by plasma apparatus are 8KHz.
Film surface grafting pretreatment
Plasma treated reverse osmosiss base material is entered by trimethoxysilane coupling agent with the speed of 0.3m/min again
Row film surface grafting pretreatment.
Low-surface energy substance is grafted
Jing trimethoxysilane coupling agents are carried out into the reverse osmosis membrane of film surface grafting pretreatment again with the speed of 0.3m/min
Spend by the 17 fluorine decyl triethoxysilanes containing 10% mass fraction, solvent for use is PFPE.
Drying and processing
The reverse osmosiss of Jing surface graft modifications are processed by the baking oven section that temperature is 60 DEG C with the speed of 0.3m/min.
Winding
The reverse osmosis membrane of drying process is wound after air cooling system and obtains final product anti-pollution reverse osmosis membrane.
Embodiment five
A kind of preparation method of anti-pollution reverse osmosis membrane, comprises the following steps：
Plasma modification process
Reverse osmosis membrane base material is passed through into gas by plasma apparatus of the polar plate spacing as 2mm with the speed of 0.4m/min
Oxygen of the atmosphere for 40sccm, the frequency of radio-frequency power supply used by plasma apparatus are 10KHz.
Film surface grafting pretreatment
Plasma treated reverse osmosiss base material is entered by trimethoxysilane coupling agent with the speed of 0.4m/min again
Row film surface grafting pretreatment.
Low-surface energy substance is grafted
Jing trimethoxysilane coupling agents are carried out into the reverse osmosis membrane of film surface grafting pretreatment again with the speed of 0.4m/min
Spend by the 17 fluorine decyl triethoxysilanes containing 10% mass fraction, solvent for use is PFPE.
Drying and processing
The reverse osmosiss of Jing surface graft modifications are processed by the baking oven section that temperature is 60 DEG C with the speed of 0.4m/min.
Winding
The reverse osmosis membrane of drying process is wound after air cooling system and obtains final product anti-pollution reverse osmosis membrane.
As shown in Figures 1 and 2, a kind of preparation facilitiess of anti-pollution reverse osmosis membrane that the present invention is disclosed, including plasma
Equipment 1, pretreatment-liquid containers (not shown), anti-soil coating liquid container 2 and baking oven 3；The plasma apparatus 1, pretreatment
Liquid container, anti-soil coating liquid container 2 and baking oven 3 are sequentially arranged, and trimethoxysilane coupling agent is housed in pretreatment-liquid containers, is resisted
Dirty coating liquid container 2 is molten for 17 fluorine decyl triethoxysilanes and/or tridecafluoro-n-octyltriethoxysilane equipped with solute
Solution of the agent for PFPE；Jing plasma apparatus 1, pretreatment-liquid containers, anti-soil coating liquid hold reverse osmosis membrane base material 4 successively
Device 2 and baking oven 3.
Preparation facilitiess may also include rinsing and air-dried mechanism 5, and rinse carries out air-cooled rear place with air-dried mechanism 5 to reverse osmosis membrane
Reason, usually fan for cooling process.
As shown in Fig. 2 plasma apparatus 1 are atmospheric low-temperature plasma device, in the form of dielectric barrier discharge
Discharged under atmospheric pressure, agent structure is two pieces of metal polar plates (power electrode 11 and ground electrodes arranged in parallel up and down
12), middle is glass as insulator, and centre is passed through gas, and the gas being passed through is oxygen, and throughput is 30-40sccm, purity
More than 99.9%.Polar plate spacing is 2-3mm, and the frequency of the high-voltage radio-frequency power supply of plasma apparatus 1 is 8KHz-12HKz.Deng from
Daughter equipment 1 is routine techniquess, and its concrete structure do not repeated herein.
Claims (9)
1. a kind of preparation method of anti-pollution reverse osmosis membrane, it is characterised in that：Comprise the following steps：By reverse osmosis membrane base material Jing etc.
After ion processing；React in trimethoxysilane coupling agent pretreatment fluid, pretreatment fluid is trimethoxysilane coupling agent；
Again through the process of anti-soil coating liquid, it is 17 fluorine decyl triethoxysilanes and/or ten trifluoro octyl groups that anti-soil coating liquid is solute
The solution of triethoxysilane and solvent for PFPE；Then drying and processing is carried out to reverse osmosis membrane base material, obtains anti-soil anti-
Permeable membrane.
2. a kind of preparation method of anti-pollution reverse osmosis membrane as claimed in claim 1, it is characterised in that：Reverse osmosis membrane base material is
Aromatic polyamide class reverse osmosis membrane.
3. a kind of preparation method of anti-pollution reverse osmosis membrane as claimed in claim 1, it is characterised in that：Plasma treatment is passed through
Gas be oxygen, throughput is 30-40sccm, and purity is more than 99.9%.
4. a kind of preparation method of anti-pollution reverse osmosis membrane as claimed in claim 1, it is characterised in that：Reverse osmosis membrane base material with
The speed of 0.2-0.5m/min is by carrying out Surface Treatment with Plasma.
5. a kind of preparation method of anti-pollution reverse osmosis membrane as claimed in claim 1, it is characterised in that：Solute in pretreatment fluid
Mass-volume concentration is 10-20%.
6. a kind of preparation method of anti-pollution reverse osmosis membrane as claimed in claim 1, it is characterised in that：Reverse osmosis membrane base material with
The speed of 0.2-0.5m/min is through anti-soil coating liquid.
7. a kind of preparation method of anti-pollution reverse osmosis membrane as claimed in claim 1, it is characterised in that：Drying temperature is 50-
60℃。
8. a kind of preparation facilitiess of anti-pollution reverse osmosis membrane as claimed in claim 1, it is characterised in that：Set including plasma
Standby, pretreatment-liquid containers, anti-soil coating liquid container and baking oven；The plasma apparatus, pretreatment-liquid containers, anti-soil coating liquid hold
Device and baking oven are sequentially arranged, and trimethoxysilane coupling agent is housed in pretreatment-liquid containers, and anti-soil coating liquid container is equipped with solute
Solution of the solvent for PFPE for 17 fluorine decyl triethoxysilanes and/or tridecafluoro-n-octyltriethoxysilane；Instead
Jing plasma apparatus, pretreatment-liquid containers, anti-soil coat liquid container and baking oven to infiltration film base material successively.
9. a kind of preparation facilitiess of anti-pollution reverse osmosis membrane as claimed in claim 8, it is characterised in that：Also include rinsing and wind
Dry mechanism, rinsing are arranged on baking oven rear end with air-dried mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611122503.1A CN106606929A (en) | 2016-12-08 | 2016-12-08 | Anti-pollution reverse osmosis membrane preparation method and preparation device |
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| CN201611122503.1A CN106606929A (en) | 2016-12-08 | 2016-12-08 | Anti-pollution reverse osmosis membrane preparation method and preparation device |
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| CN201611122503.1A Pending CN106606929A (en) | 2016-12-08 | 2016-12-08 | Anti-pollution reverse osmosis membrane preparation method and preparation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479114A (en) * | 2019-07-30 | 2019-11-22 | 三达膜科技（厦门）有限公司 | A kind of preparation method of anti-pollution type cellulose-acetafolic |
| KR20200107121A (en) * | 2019-03-06 | 2020-09-16 | 주식회사 엘지화학 | Gas separation membrane, gas separation membrane module comprising the same and preparation method for the same |
| CN114892400A (en) * | 2021-11-01 | 2022-08-12 | 中国电力科学研究院有限公司 | Material surface treatment device and method |
| CN115010697A (en) * | 2022-06-21 | 2022-09-06 | 广西大学 | Preparation of cation photosensitizer quaternary ammonium salt grafted cellulose acetate reverse osmosis membrane |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200107121A (en) * | 2019-03-06 | 2020-09-16 | 주식회사 엘지화학 | Gas separation membrane, gas separation membrane module comprising the same and preparation method for the same |
| KR102637321B1 (en) | 2019-03-06 | 2024-02-15 | 주식회사 엘지화학 | Gas separation membrane, gas separation membrane module comprising the same and preparation method for the same |
| CN110479114A (en) * | 2019-07-30 | 2019-11-22 | 三达膜科技（厦门）有限公司 | A kind of preparation method of anti-pollution type cellulose-acetafolic |
| CN114892400A (en) * | 2021-11-01 | 2022-08-12 | 中国电力科学研究院有限公司 | Material surface treatment device and method |
| CN114892400B (en) * | 2021-11-01 | 2023-12-26 | 中国电力科学研究院有限公司 | Material surface treatment device and method |
| CN115010697A (en) * | 2022-06-21 | 2022-09-06 | 广西大学 | Preparation of cation photosensitizer quaternary ammonium salt grafted cellulose acetate reverse osmosis membrane |
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Application publication date: 20170503 |