CN1134311A - Method for raising separation efficiency of ultra-filteration diaphragm - Google Patents
Method for raising separation efficiency of ultra-filteration diaphragm Download PDFInfo
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- CN1134311A CN1134311A CN 95103432 CN95103432A CN1134311A CN 1134311 A CN1134311 A CN 1134311A CN 95103432 CN95103432 CN 95103432 CN 95103432 A CN95103432 A CN 95103432A CN 1134311 A CN1134311 A CN 1134311A
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- diaphragm
- separation
- filteration
- ultra
- separation efficiency
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Abstract
By increasing an inverse cleaning system for inverse diaphragm flushing into the hollow-fibre filtration diaphragm separation or concentration process, the present invention solves the problem of diaphragm pollution during separation and raises the separation efficiency of diaphragm. Without altering original separation process, the present invention is suitable for use in industry.
Description
The invention belongs to the membrane separation technique field, relate to a kind of particularly method of hollow-fibre membrane separative efficiency of milipore filter that is used to improve.
The milipore filter isolation technics is a new technology of rising in recent years, it separates with small-molecule substance big molecule under normal temperature condition with selected film with certain pore size by pressure, can finish the separation and concentrated two technical process of material by a kind of mode of operation simultaneously.Because this technology has the energy of saving, easy to operate and equipment characteristic of simple, and material composition is damaged, thereby obtain to develop rapidly.But at present film separate or concentration process particularly hollow-fibre membrane separate or concentration process in, because the aspect factors such as process conditions in film, material and the separation process, often cause the pollution of face, cause the permeability rate and even the film separative efficiency of film seriously to descend, influenced the application in industrial-scale production and the popularization of membrane separating technology to a great extent.Relevant research and use department has following several for addressing this problem the method that proposes and adopt so far both at home and abroad: dodge the method for blowing: promptly strengthen mass flow in moment, improve its flow velocity, wash out the formed pollutant of face with fluid 1.; 2. reverse flush: promptly in separation process, regularly make fluid do reverse flow, wash away the appended pollutant of face down by forward and reverse alternately the flowing of fluid; 3. regularly clean: promptly after equipment moves a period of time, the film separation process is temporarily stopped, then contaminated face being cleaned with cleaning agent.Though above-mentioned all methods also respectively have certain effect, all can not solve membrane pollution problem by efficiently and effectively.
The objective of the invention is at the existing defective of state of the art, thereby provide a kind of simple and can solve the method that membrane pollution problem improves the film separative efficiency effectively.
Technical solution of the present invention is to set up a reverse purging system that can carry out back flush to face in the flow process of hollow fiber filter membrane separation or condensed matter.Like this, after filter membrane is polluted and causes its permeability rate and drop to a certain degree,, make filter membrane see through liquid and pump into membrane module for reverse time, sweep away pollutant accompanying on the face, reach the cleaning purpose with certain pressure and flow velocity by opening reverse purging system.After cleaning finishes, turn-off reverse purging system, then ultrafiltration apparatus is proceeded normal detached job.
A specific embodiment of the present invention's design as shown in Figure 1.
Label 1 is for concentrating flow container among Fig. 1; 2 is circulating pump; 3 is hollow fiber film assembly; 4 is flowmeter; 6 is scavenging pump; 6 is controller.Parts 1,2,3,4 constitute the work system of existing milipore filter equipment in interior, its technological process is: the dense liquid that coils up in the jar 1 is pumped to membrane module 3 by circulating pump 2, low-molecular material in the liquid sees through the hollow-fibre membrane surface current goes into through the liquid basin, and the things of being held back by face such as hmw protein then are back to dense coiling up in the jar 1 through flowmeter 4.Reverse purging system of the present invention constitutes by being located at the scavenging pump 5 and the controller 6 of face through liquid one side, when ultrafiltration membrane system work a period of time of after, hollow-fibre membrane 3 surfaces are descended because of polluting permeability rate, this moment, controller 6 can be opened scavenging pump 5 automatically by timing or quantitative manner, the liquid another mistake that sees through the fiber face is pumped into membrane module 3 to returning, face is carried out reverse cleaning; After cleaning finishes, by controller 6 scavenging pump 5 cuts out automatically again, then the former separation process of ultrafiltration membrane system is proceeded.
Compared with prior art, the advantage that has of the present invention is: 1. owing to utilize and see through liquid pair Face carries out reverse cleaning, so it is more thorough to remove the film damage ratio; 2. removing film pollution operation is In separation process with regularly or quantitative manner automatically carry out, just need not to stop former ultrafiltration system Normal separation process; 3. used cleaning fluid is the filter permeate, thereby does not affect separation of material originally The characteristic of body.
Claims (2)
1, a kind of method that is used to improve the hollow fiber filter membrane separative efficiency is characterized in that setting up a reverse purging system that can carry out back flush to face in the flow process of hollow fiber filter membrane separation or condensed matter.
2, the method for claim 1 is characterized in that said reverse purging system is made of scavenging pump (5) and controller (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95103432 CN1134311A (en) | 1995-04-24 | 1995-04-24 | Method for raising separation efficiency of ultra-filteration diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95103432 CN1134311A (en) | 1995-04-24 | 1995-04-24 | Method for raising separation efficiency of ultra-filteration diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1134311A true CN1134311A (en) | 1996-10-30 |
Family
ID=5074714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95103432 Pending CN1134311A (en) | 1995-04-24 | 1995-04-24 | Method for raising separation efficiency of ultra-filteration diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1134311A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444936C (en) * | 2006-01-28 | 2008-12-24 | 北京·松下彩色显象管有限公司 | Automatic cleaning method for super filter film in waste water treating system |
| CN108854558A (en) * | 2018-06-12 | 2018-11-23 | 合肥丰洁生物科技有限公司 | A kind of membrane separation plant being timed flushing |
-
1995
- 1995-04-24 CN CN 95103432 patent/CN1134311A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444936C (en) * | 2006-01-28 | 2008-12-24 | 北京·松下彩色显象管有限公司 | Automatic cleaning method for super filter film in waste water treating system |
| CN108854558A (en) * | 2018-06-12 | 2018-11-23 | 合肥丰洁生物科技有限公司 | A kind of membrane separation plant being timed flushing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |