CN102302901A - Method for enhancing water flux of polyamide reverse-osmosis composite membrane - Google Patents
Method for enhancing water flux of polyamide reverse-osmosis composite membrane Download PDFInfo
- Publication number
- CN102302901A CN102302901A CN201110154634A CN201110154634A CN102302901A CN 102302901 A CN102302901 A CN 102302901A CN 201110154634 A CN201110154634 A CN 201110154634A CN 201110154634 A CN201110154634 A CN 201110154634A CN 102302901 A CN102302901 A CN 102302901A
- Authority
- CN
- China
- Prior art keywords
- osmosis composite
- polyamide reverse
- water flux
- reverse osmosis
- composite film
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 239000004952 Polyamide Substances 0.000 title claims abstract description 22
- 229920002647 polyamide Polymers 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 20
- 230000004907 flux Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000012528 membrane Substances 0.000 title abstract description 14
- 230000002708 enhancing effect Effects 0.000 title abstract 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 17
- 238000012695 Interfacial polymerization Methods 0.000 claims abstract description 4
- 239000002798 polar solvent Substances 0.000 claims abstract description 3
- 150000003839 salts Chemical class 0.000 claims description 10
- 238000007654 immersion Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract 1
- 150000007513 acids Chemical class 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 150000002576 ketones Chemical class 0.000 abstract 1
- -1 phenolic ethers Chemical class 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- 150000001263 acyl chlorides Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229940018564 m-phenylenediamine Drugs 0.000 description 2
- 238000001728 nano-filtration Methods 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- MCPANHZWUBLTMU-UHFFFAOYSA-N chloro(trimethyl)silane hexane Chemical compound C[Si](Cl)(C)C.CCCCCC MCPANHZWUBLTMU-UHFFFAOYSA-N 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to a method for enhancing water flux of a polyamide reverse-osmosis composite membrane. The polyamide reverse-osmosis composite membrane which is obtained through interfacial polymerization is subjected to being processed for a certain period of time by a saline solution which contains organic polar solvents, acids, alcohols, phenolic ethers, ketones and the like and is then subjected to heat treating and sufficient washing, so that the water flux of the obtained membrane is greatly enhanced.
Description
Technical field
The present invention relates to a kind of method that improves the polyamide reverse osmosis composite film water flux, belong to preparation method's technical field of pellicle.
Background technology
Nanofiltration and reverse osmosis membrane are because of the separating property to the brilliance of organic molecule and inorganic ion, and safety, environmental friendliness, advantage such as easy to operate and become one of key technology of water treatment.Its application comprises the seawater and the bitter degree of saltinessization, water softening, and middle water reclaims, Industrial Wastewater Treatment, wide spectrums such as ultra-pure water preparation.Wherein composite membrane can be with the rejection of film because of it, water flux, performance optimization such as stability and become current with fastest developing speed, use maximum film kinds, surpassing 90% nanofiltration and reverse osmosis membrane in the market is composite membrane.Composite membrane is meant very thin, the different materials fine and close, that the special separation function is arranged of compound one deck on the support counterdie of porous.Compare with integrated film, the surface compact layer thickness of composite membrane is thinner, thereby makes film have the high solute separation rate and the transmission rates of water simultaneously, and optimizable physical chemistry structure, can satisfy various Selective Separation demand.The current composite membrane that is widely used in the water treatment field is mainly taked the mode of interfacial polymerization, polyamide film is compound to micropore supports the counterdie surface.Common technical process has detailed introduction at the United States Patent (USP) 4277344 of initiative.The micropore counterdie that at first polysulfones is coated on the polyester non-woven fabric and forms; Be immersed in the diamines or the polyamines aqueous solution, drench through wind then, methods such as roll-in are removed the unnecessary amine aqueous solution in film surface; Be immersed in again in organic non-polar solution of polynary acyl chlorides and acyl chlorides generation interface polymerization reaction; Thereby form the fine and close polyamide ultrathin active layer with separation function on the surface, after the film forming, fully washing and suitable heat cure are handled and can be increased film properties.
Summary of the invention
The present invention wants the technical solution problem to be: overcome the shortcoming of above-mentioned prior art, a kind of method that improves the polyamide reverse osmosis composite film water flux is provided.
In order to solve above technical problem; A kind of method that improves the polyamide reverse osmosis composite film water flux of the present invention; It is characterized in that: will handle with the saline solution that contains organic polar solvent through the polyamide reverse osmosis composite film of interfacial polymerization gained; Heat-treat after half-dried or the UV processing, the water flux of gained film is greatly improved again.
Further, in the said saline solution, the concentration of salt is 0.1-50%, and salt is inorganic salts or organic salt.
Further, the time that polyamide reverse osmosis composite film uses saline solution to handle is 10 seconds-1 hour.
Further, the polyamide reverse osmosis composite film mode of using saline solution to handle is that surface-coated is handled or immersion treatment.
Said method is mounted to molecules of salt in the polyamide molecule through the swelling action of polyamide molecule in related solution, with molecules of salt (washing) stripping, the gas porosity of film is increased behind the dry solidification, has correspondingly increased the water flux of film.
The specific embodiment
Embodiment provided by the invention is following:
Comparative Examples: the polysulfones counterdie of the about 200A of average pore size was immersed in 2.0% the m-phenylene diamine (MPD) aqueous solution 2 minutes, was immersed in after half-dried with squeegee roll-in film surface in 0.2% the pyromellitic trimethylsilyl chloride hexane solution 30 seconds.Put into 90 ℃ oven 10 minutes after the taking-up.The composite membrane performance of gained is used following condition test: feeding liquid: the 1500ppm NaCl aqueous solution; Test pressure: 1.5MPa; Probe temperature: 25 ℃.The rejection 99.2% of gained test result: NaCl, water flux are 0.87M
3/ M
2.d.
Embodiment 1: Comparative Examples gained composite membrane is used 5%DMAC, and the aqueous solution of 10%NaCl was at room temperature handled 20 minutes, took out the back with 90 ℃ oven 10 minutes, acetone 2 minutes, and test condition is identical with Comparative Examples, and the gained result is listed in table 1.
Embodiment 2: with Comparative Examples gained composite membrane with 5% phenol, 10% glacial acetic acid, 10% the NaCl aqueous solution 20 minutes takes out the back with 90 ℃ oven 10 minutes, acetone 2 minutes, test condition is identical with Comparative Examples, the gained result is listed in table 1.
Table 1
Can know that from last table after the inventive method washing, gained polyamide reverse osmosis composite film water flux is significantly improved.
Except that the foregoing description, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (4)
1. method that improves the polyamide reverse osmosis composite film water flux is characterized in that: will handle with the saline solution that contain organic polar solvent through the polyamide reverse osmosis composite film of interfacial polymerization gained, and heat-treat after half-dried or UV handles again.
2. the method for raising polyamide reverse osmosis composite film water flux according to claim 1 is characterized in that: in the said saline solution, the concentration of salt is 0.1-50%, and salt is inorganic salts or organic salt.
3. the method for raising polyamide reverse osmosis composite film water flux according to claim 1 is characterized in that: the time that polyamide reverse osmosis composite film uses saline solution to handle is 10 seconds-1 hour.
4. the method for raising polyamide reverse osmosis composite film water flux according to claim 1 is characterized in that: the mode that polyamide reverse osmosis composite film uses saline solution to handle is handled or immersion treatment as surface-coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110154634A CN102302901A (en) | 2011-06-10 | 2011-06-10 | Method for enhancing water flux of polyamide reverse-osmosis composite membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110154634A CN102302901A (en) | 2011-06-10 | 2011-06-10 | Method for enhancing water flux of polyamide reverse-osmosis composite membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102302901A true CN102302901A (en) | 2012-01-04 |
Family
ID=45376871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110154634A Pending CN102302901A (en) | 2011-06-10 | 2011-06-10 | Method for enhancing water flux of polyamide reverse-osmosis composite membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102302901A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939951A (en) * | 2018-07-26 | 2018-12-07 | 浙江工业大学 | A kind of self-assembled modified polyamide reverse osmosis composite film and its application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4230583A (en) * | 1975-07-30 | 1980-10-28 | Antonio Chiolle | Supported anisotropic reverse osmosis membranes based on synthetic polyamides and processes for their preparation |
| CN1951549A (en) * | 2006-09-08 | 2007-04-25 | 浙江工商大学 | Method for preparing multilayer polyamide composite film |
| CN101112675A (en) * | 2006-07-27 | 2008-01-30 | 中国科学院大连化学物理研究所 | A kind of composite membrane surface modification method |
| CN101439271A (en) * | 2008-12-04 | 2009-05-27 | 宁波灏钻科技有限公司 | Method for preparing hydrophilic anti-pollution reverse osmosis membrane |
| CN101569836A (en) * | 2009-03-27 | 2009-11-04 | 上海应用技术学院 | High-flux composite reverse osmosis membrane and preparation method thereof |
-
2011
- 2011-06-10 CN CN201110154634A patent/CN102302901A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4230583A (en) * | 1975-07-30 | 1980-10-28 | Antonio Chiolle | Supported anisotropic reverse osmosis membranes based on synthetic polyamides and processes for their preparation |
| CN101112675A (en) * | 2006-07-27 | 2008-01-30 | 中国科学院大连化学物理研究所 | A kind of composite membrane surface modification method |
| CN1951549A (en) * | 2006-09-08 | 2007-04-25 | 浙江工商大学 | Method for preparing multilayer polyamide composite film |
| CN101439271A (en) * | 2008-12-04 | 2009-05-27 | 宁波灏钻科技有限公司 | Method for preparing hydrophilic anti-pollution reverse osmosis membrane |
| CN101569836A (en) * | 2009-03-27 | 2009-11-04 | 上海应用技术学院 | High-flux composite reverse osmosis membrane and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939951A (en) * | 2018-07-26 | 2018-12-07 | 浙江工业大学 | A kind of self-assembled modified polyamide reverse osmosis composite film and its application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107029562B (en) | MXene-based composite nanofiltration membrane and preparation method thereof | |
| Yunos et al. | Studies on fouling by natural organic matter (NOM) on polysulfone membranes: Effect of polyethylene glycol (PEG) | |
| CN106975371A (en) | A kind of composite nanometer filtering film of polyolefin micropore substrate based on hydrophilic modifying and preparation method thereof | |
| CN104474925A (en) | Preparation method of composite high-water-flux polyamide reverse-osmosis membrane | |
| CN104209022A (en) | High-flux polyamide/ZIF-8 nanofiltration composite film and preparation method thereof | |
| JP6109492B2 (en) | NF flat membrane and its manufacturing method | |
| JPWO2012090862A1 (en) | Composite semipermeable membrane | |
| CN107029555A (en) | A kind of solvent resistant NF membrane and preparation method thereof | |
| JP6343470B2 (en) | NF membrane manufacturing method | |
| CN102258949A (en) | Method for adjusting interfacial structure of polyamide reverse osmosis compound membrane | |
| CN103768963A (en) | Preparation method for polyamide composite nanofiltration membrane | |
| CN108187511A (en) | High flux and high retention ratio polyamide composite reverse osmosis membrane and preparation method thereof | |
| Li et al. | Preparation and characterization of high‐selectivity hollow fiber composite nanofiltration membrane by two‐way coating technique | |
| CN102814126A (en) | Preparation method of high-flux antioxidant nanofiltration membrane | |
| JP6642860B2 (en) | Water treatment separation membrane and method for producing the same | |
| CN107486041B (en) | Ultra-low pressure composite reverse osmosis membrane and preparation method thereof | |
| KR101517653B1 (en) | High Flux Reverse Osmosis Membrane Comprising Xanthene Compound And Manufacturing Method Thereof | |
| JP2008246419A (en) | Production method for composite semi-permeable membrane | |
| CN101721927A (en) | Ultrafiltration membrane copoly(phthalazinone aryl ether sulfone) and preparation method thereof | |
| WO2006038409A1 (en) | Process for producing semipermeable composite membrane | |
| CN102210981A (en) | Method for preparing polyamide reverse osmosis composite membrane | |
| WO2006038425A1 (en) | Semipermeable composite membrane and process for producing the same | |
| CN103877875B (en) | A kind of sub-Nano filtering composite membrane and preparation method thereof | |
| CN100484615C (en) | Polyester amide reverse osmosis compound film and its preparation method | |
| CN102210982B (en) | Method for preparing polyamide reverse osmosis composite membrane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |