CN101337162A - Preparation method of filter membrane for desalinating sea water - Google Patents
Preparation method of filter membrane for desalinating sea water Download PDFInfo
- Publication number
- CN101337162A CN101337162A CNA2007100579851A CN200710057985A CN101337162A CN 101337162 A CN101337162 A CN 101337162A CN A2007100579851 A CNA2007100579851 A CN A2007100579851A CN 200710057985 A CN200710057985 A CN 200710057985A CN 101337162 A CN101337162 A CN 101337162A
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- CN
- China
- Prior art keywords
- room temperature
- solution
- membrane
- sol
- filter membrane
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- 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.)
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- 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
A method for preparing a filter membrane to desalt seawater comprises the following steps: (1) water and anhydrous alcohol are mixed, hydrochloric acid is added, the pH value is 2, and a solution 1 is obtained; (2) methyl silicate is added into the solution 1 drop by drop, and a solution 2 is obtained after stirring; (3) DCCA is added; (4) a settled solution is obtained after sealing and vigorous stirring, stored in a sealing container and aged at the room temperature to obtain a silicon dioxide sol; (5) a silicon dioxide porous ceramic wafer is put and soaked in the sol, taken out and rotated to make the sol spread uniformly and form a sol membrane; (6) the sol membrane is subjected to air-seasoning at the room temperature for obtaining a gel film; and (7) the gel film is subjected to heat treatment and preservation, and the filter membrane is obtained after cooling to the room temperature along with a furnace. The method has the advantages of no crake on the membrane and uniform aperture.
Description
Technical field
The present invention relates to a kind of preparation method of filter membrane for desalinating sea water.
Background technology
Reverse osmosis seawater desalting method, energy consumption is low, but the cost height of film is applied to desalinization with ceramic membrane low-cost, multi-functional, stable performance, overcomes the defective of organic film, reduces cost and large-scale industrial application is a still unsolved at present difficult problem.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of preparation method of filter membrane for desalinating sea water is provided.
Technical scheme of the present invention is: a kind of preparation method of filter membrane for desalinating sea water is characterized in that: 1, water and absolute ethyl alcohol are mixed, add hydrochloric acid, pH value is 2, obtains solution 1; 2, methyl silicate is added drop-wise to stirring in the solution 1, obtains solution 2; 3, add DCCA; 4, sealing, vigorous stirring, settled solution, be kept in the airtight container at room temperature aging silicon dioxide gel; 5, porous silica pottery garden sheet is placed the colloidal sol dip-coating, mention the back rotation colloidal sol is evenly spread out, form dissolved glue film; 6,, get gel film with dissolved glue film air dry at room temperature; 7, with gel film heat treatment insulation, with stove cool to room temperature, i.e. made membrane.
Beneficial effect of the present invention: film does not have cracking, and the aperture is even.
The specific embodiment
Embodiment: a kind of preparation method of filter membrane for desalinating sea water, 1, water and absolute ethyl alcohol are mixed, add hydrochloric acid, pH value is 2, obtains solution 1; 2, methyl silicate is added drop-wise to stirring in the solution 1, obtains solution 2; 3, add DCCA; 4, sealing, vigorous stirring, settled solution, be kept in the airtight container at room temperature aging silicon dioxide gel; 5, porous silica pottery garden sheet is placed the colloidal sol dip-coating, mention the back rotation colloidal sol is evenly spread out, form dissolved glue film; 6,, get gel film with dissolved glue film air dry at room temperature; 7, with gel film heat treatment insulation, with stove cool to room temperature, i.e. made membrane.
Claims (1)
1, a kind of preparation method of filter membrane for desalinating sea water is characterized in that: 1, water and absolute ethyl alcohol are mixed, add hydrochloric acid, pH value is 2, obtains solution 1; 2, methyl silicate is added drop-wise to stirring in the solution 1, obtains solution 2; 3, add DCCA; 4, sealing, vigorous stirring, settled solution, be kept in the airtight container at room temperature aging silicon dioxide gel; 5, porous silica pottery garden sheet is placed the colloidal sol dip-coating, mention the back rotation colloidal sol is evenly spread out, form dissolved glue film; 6,, get gel film with dissolved glue film air dry at room temperature; 7, with gel film heat treatment insulation, with stove cool to room temperature, i.e. made membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100579851A CN101337162A (en) | 2007-07-03 | 2007-07-03 | Preparation method of filter membrane for desalinating sea water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100579851A CN101337162A (en) | 2007-07-03 | 2007-07-03 | Preparation method of filter membrane for desalinating sea water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101337162A true CN101337162A (en) | 2009-01-07 |
Family
ID=40211424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100579851A Withdrawn CN101337162A (en) | 2007-07-03 | 2007-07-03 | Preparation method of filter membrane for desalinating sea water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101337162A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511081A (en) * | 2017-10-13 | 2017-12-26 | 中国科学院生态环境研究中心 | A kind of preparation method of antipollution PTFE CA/SiNPs composite membranes |
| CN107737529A (en) * | 2017-10-13 | 2018-02-27 | 中国科学院生态环境研究中心 | A kind of preparation method of super-hydrophobic oleophobic composite membrane |
-
2007
- 2007-07-03 CN CNA2007100579851A patent/CN101337162A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511081A (en) * | 2017-10-13 | 2017-12-26 | 中国科学院生态环境研究中心 | A kind of preparation method of antipollution PTFE CA/SiNPs composite membranes |
| CN107737529A (en) * | 2017-10-13 | 2018-02-27 | 中国科学院生态环境研究中心 | A kind of preparation method of super-hydrophobic oleophobic composite membrane |
| CN107737529B (en) * | 2017-10-13 | 2021-06-01 | 中国科学院生态环境研究中心 | Preparation method of super-hydrophobic and oleophobic composite membrane |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |