CN102631841A - Membrane filter with double filtration - Google Patents
Membrane filter with double filtration Download PDFInfo
- Publication number
- CN102631841A CN102631841A CN2012100526681A CN201210052668A CN102631841A CN 102631841 A CN102631841 A CN 102631841A CN 2012100526681 A CN2012100526681 A CN 2012100526681A CN 201210052668 A CN201210052668 A CN 201210052668A CN 102631841 A CN102631841 A CN 102631841A
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- Prior art keywords
- filter
- film
- double filtration
- screen cloth
- membrane
- 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
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- 238000001914 filtration Methods 0.000 title claims abstract description 42
- 239000012528 membrane Substances 0.000 title abstract description 30
- 239000004744 fabric Substances 0.000 claims abstract description 32
- 238000005516 engineering process Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 2
- 210000001601 blood-air barrier Anatomy 0.000 abstract 6
- 238000010297 mechanical methods and process Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 9
- 239000010865 sewage Substances 0.000 description 4
- 238000005374 membrane filtration Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- Filtering Materials (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a membrane filter with double filtration, which belongs to the fields of environment-friendly water treatment technologies and membrane separation technologies. The membrane filter is particularly suitable for an immersed membrane bioreactor (MBR). The membrane filter with double filtration is characterized by consisting of a plurality of membrane filtering units, wherein a plurality of capillary membranes are wrapped and protected by virtue of a mesh filter sleeve. As each capillary membrane is provided with a protecting jacket, the problem that the root part of each capillary membrane is fragile is solved; due to being filtered by the mesh filter sleeve, fiber matters have no chance to contact and wind the capillary membranes; as the fiber matters outside membrane bundles are relatively easy to be removed though a mechanical method, the trouble of damaging the capillary membranes by the fiber matters does not need to be worried about; and as produced water is filtered through a filter cloth filter sleeve and the capillary membranes, the quality of the produced water is better ensured.
Description
Technical field
The invention belongs to environmental protection water technology and membrane separation technique field, particularly a kind of film filter of double filtration comprises nanofiltration, ultrafiltration and microporous filtration.This kind film filter is specially adapted to submerged membrane bioreactor (MBR), intensified membrane bioreaction device (MEBR) and membrane filtration.
Background technology
Common decomposition pressure formula of hollow-fibre membrane or capillary-pipe film or submerged membrane filter in the known technology.See that for clear present patent application is defined as 0.03-0.1mm with reference to the division of United States Patent (USP) (7517421B2) to hollow-fibre membrane, capillary-pipe film and tubular membrane respectively with hollow-fibre membrane, capillary-pipe film and tubular membrane external diameter; 0.2-3mm and 4-50mm.The present invention relates to the capillary-pipe film of 0.2-3.0mm.Be referred to as perforated membrane (filtering accuracy is the 0.005-1 micron) to NF membrane, micro-filtration membrane and milipore filter in this specification in addition.
The submerged membrane filter is normally used for the higher liquid of impurity screening.The submerged membrane filter generally through in the liquid around the film from bottom to top gas expose to the sun and lower solid impurity in the liquid in the deposition on film surface with to the pollution on film surface.A kind of special applications of submerged membrane filter is the biochemical reaction liquid in the biochemical reactor that filters in the sewage disposal; This technology that biochemical reactor and membrane filtration are combined is called as membrane bioreactor.Chinese patent (application number 200610002387X) has disclosed " intensified membrane bioreaction device " that biofilm reactor and membrane filtration are combined (MEBR) in addition.
The submerged membrane filter has forms such as curtain formula, pillar and pasture and water formula.Wherein the curtain formula is comparatively common.Curtain type membrane filter film silk root is comparatively fragile.(Chinese patent ZL 200510064771.8) uses weaving manner to strengthen usually in the known technology, but the litzendraht wire in the knitting skill might cause the damage on film surface.Simultaneously,, pile up winding between the capillary-pipe film, cause membrane flux decline and film silk to fracture through being everlasting owing to the existence of hair fiber in the sewage and paper fiber.
The object of the invention is exactly the submerged membrane filter that discloses a kind of double filtration.
Summary of the invention
The present invention to solve submergence film filter in the prior art exist root comparatively fragile with sewage in fiber around capillary-pipe film, pile up the technical problem of winding, disclose a kind of film filter of double filtration.
The film filter of double filtration of the present invention comprises at least one filter element, and two are drawn sap cavity, two draw the sap cavity shell with at least one with draw the production fluid pipe that sap cavity is come round; Wherein said filter element comprises many capillaries film; At least one screen cloth crossed filter ruffle and said many capillaries film and screen cloth crossed the filter ruffle two ends and be cast in two LIFTs together respectively; Said many capillaries film is crossed filter ruffle by screen cloth and is wrapped up fully between two said LIFTs; Said many capillaries film two ends are all open, and with the said sap cavity UNICOM of drawing, simultaneously said many capillaries film outside and screen cloth are crossed the inside and outside side of filter ruffle and are all drawn the sap cavity isolation with said.
The film filter beneficial effect of double filtration of the present invention is owing to every bundle capillary-pipe film protective sleeve is provided all, has solved the fragile problem of capillary-pipe film root; Because screen cloth is crossed filter ruffle and has been filtered fibrous matter, makes these materials no longer include chance and contacts and twine with capillary-pipe film; Fibrous matter outside the film bundle is easier to remove through mechanical means, and needn't worry to injure capillary-pipe film; Produce water and filter cover and capillary-pipe film filtration through filter cloth, the product quality is more guaranteed.
Description of drawings
Fig. 1 is the film filter longitudinal profile sketch map of first kind of double filtration of the present invention.
Fig. 2 is an AA horizontal section sketch map in the film filter longitudinal profile sketch map of first kind of double filtration of the present invention.
Fig. 3 is the film filter longitudinal profile sketch map of second kind of double filtration of the present invention.
Fig. 4 is an AA horizontal section sketch map in the film filter longitudinal profile sketch map of second kind of double filtration of the present invention.
The film filter of 100. double filtrations among Fig. 1, Fig. 2, Fig. 3 or Fig. 4,101. filter elements, the film of capillary more than 110., 116. screen cloths are crossed filter ruffle, and 120. draw sap cavity, 121. production fluid pipes, 122. draw the sap cavity shell, 140. filter element LIFTs
141. assembly LIFTs among Fig. 1 or Fig. 2
117. filter elements are built shell among Fig. 3 or Fig. 4,118. filter element connectors
The specific embodiment
Referring to Fig. 1 to 4, the film filter of double filtration of the present invention (100 or 200) comprises at least one filter element (101), and two are drawn sap cavity (120), and two are drawn sap cavity shell (122) and at least one and draw the production fluid pipe (121) that sap cavity (122) communicates; It is characterized in that wherein said filter element (101) comprises many capillaries film (110); At least one screen cloth crossed filter ruffle (116) and said many capillaries film (110) and screen cloth crossed filter ruffle (116) two ends and be cast in two LIFTs (140) together respectively; Said many capillaries film (110) is crossed filter ruffle (116) by screen cloth and is wrapped up fully between two said LIFTs (140); Said many capillaries film (110) two ends are all open; And with said sap cavity (120) UNICOM of drawing, simultaneously said many capillaries film (110) outside and screen cloth are crossed in the filter ruffle (116) outside and are all drawn sap cavity (120) isolation with said.
Referring to Fig. 1 and Fig. 2; The film filter (100) of first kind of double filtration of the present invention is characterized in that at least one filter element (101) realizes that through two assembly LIFTs (141) said many capillaries films (110) outside and screen cloth cross in the filter ruffle (116) outside and all draw sap cavity (120) isolation with said.
Referring to Fig. 3 and Fig. 4, the film filter (200) of second kind of double filtration of the present invention is characterized in that said filter element comprises that also two filter elements build shell (117); Said at least one filter element (101) through two independently filter element connector (118) and said filter element build shell (117) and said and draw sap cavity shell (122) and cooperate and realize that said many capillaries film (110) outside and screen cloth cross in the filter ruffle (116) outside and all draw sap cavity (120) isolation with said, wherein said independent connector (118) be the known technology connector one or more.This moment, said filter element can independent dismounting or replacing.
The film filter of said double filtration of the present invention comprises at least one row's filter element (101), when including only row's filter element (101), is called the film filter of curtain formula double filtration, when comprising many row filter unit (101), is called the film filter of pillar double filtration.
Said screen cloth cross filter ruffle (101) by the net of any kind or cloth through thermal weld, ultrasonic bonding, bonding or make and process tubular or tubulose.
Said screen cloth is crossed filter ruffle (101) filtering accuracy between the 1-200 micron.It is excessively dirty stifled to cause screen cloth to cross filter ruffle when this filtering accuracy is higher than 1 micron, when this filtering accuracy is lower than 200 microns in the sewage part fibrous matter can penetrate screen cloth and cross filter ruffle.
Said screen cloth is crossed filter ruffle (101) and is returned circular diameter between 3-50mm.This diameter makes preparation cost increase less than 3mm, during greater than 50mm between its internal membrane silk pollutant be difficult to remove through backwash.
Said capillary-pipe film be external diameter between 0.5-3.5mm, the capillary filtering film of filtering accuracy between the 0.005-1 micron.
When using the film filter of double filtration of the present invention this film filter is immersed in and is filtered in the liquid, placing direction is not limit; The production fluid mouth is connected with production fluid pump (not shown), and the function of this production fluid pump is with production fluid output and for film filter production fluid side negative pressure is provided in case of necessity that the filter below is provided with the aerator (not shown).Being filtered liquid is supplying under the same-action ecto-entad to see through at first that screen cloth crosses that filter ruffle sees through that the capillary membranous wall gets into the capillary-pipe film inner chamber again and through production fluid pipe output under the effect of liquid pool liquid level pressure or in liquid pool liquid level pressure and production fluid pump negative pressure.The big suspension, particularly fiber substance that are intercepted leave screen cloth and cross filter ruffle under the gas disturbance.Crossing when screen cloth that filter ruffle and/or capillary-pipe film surface is dirty can be through backwash or Chemical cleaning recovery filter efficiency when stifled.
Claims (8)
1. the film filter of a double filtration comprises at least one filter element (101), and two are drawn sap cavity (120), and two are drawn sap cavity shell (122) and at least one and draw the production fluid pipe (121) that sap cavity communicates; It is characterized in that wherein said filter element (101) comprises many capillaries film (110); At least one screen cloth crossed filter ruffle (116) and said many capillaries film (110) and screen cloth crossed filter ruffle (116) two ends and be cast in two LIFTs (140) together respectively; Said many capillaries are crossed filter ruffle (116) by screen cloth and are wrapped up fully between two said LIFTs (140); Said capillary two ends are all open; And with said sap cavity (120) UNICOM of drawing, simultaneously said many capillaries film (110) outside and screen cloth are crossed in the filter ruffle (116) outside and are all drawn sap cavity (120) isolation with said.
2. the film filter of double filtration according to claim 1 is characterized in that said at least one filter element (101) realizes that through two assembly LIFTs (141) said many capillaries films (110) outside and screen cloth cross in the filter ruffle (116) outside and all draw sap cavity (120) isolation with said.
3. the film filter of double filtration according to claim 1 is characterized in that said filter element comprises that also two filter elements build shell (117); Said at least one filter element (101) through two independently filter element connector (118) and said filter element build shell (117) and said and draw and realize that said many capillaries film (110) outside and screen cloth cross in the filter ruffle (116) outside and all draw sap cavity (120) isolation with said cooperating of sap cavity shell (122), wherein said independent connector (118) be the known technology connector one or more.
4. the film filter of double filtration according to claim 1 is characterized in that the film filter of said double filtration comprises at least one row's filter element (101).
5. the film filter of double filtration according to claim 1, it is characterized in that said screen cloth cross filter ruffle (101) by the net of any kind or cloth through thermal weld, ultrasonic bonding, bonding or make and process tubular or tubulose.
6. the film filter of double filtration according to claim 1 is characterized in that said screen cloth crosses filter ruffle (101) filtering accuracy between the 1-200 micron.
7. the film filter of double filtration according to claim 1 is characterized in that said screen cloth crosses filter ruffle (101) and return circular diameter between 3-50mm.
8. the film filter of double filtration according to claim 1, it is characterized in that said capillary-pipe film be external diameter between 0.5-3.5mm, the capillary filtering film of filtering accuracy between the 0.005-1 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100526681A CN102631841A (en) | 2012-03-02 | 2012-03-02 | Membrane filter with double filtration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100526681A CN102631841A (en) | 2012-03-02 | 2012-03-02 | Membrane filter with double filtration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102631841A true CN102631841A (en) | 2012-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100526681A Pending CN102631841A (en) | 2012-03-02 | 2012-03-02 | Membrane filter with double filtration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102631841A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768135A (en) * | 1993-09-02 | 1995-03-14 | Mitsubishi Rayon Co Ltd | Electrodialysis method |
| US7063788B2 (en) * | 1995-08-11 | 2006-06-20 | Zenon Environmental Inc. | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes |
| CN101497000A (en) * | 2009-01-08 | 2009-08-05 | 王俊川 | Immersion type hollow fiber membrane component and complete equipment thereof |
| CN201305485Y (en) * | 2008-12-11 | 2009-09-09 | 孟广祯 | An immersed gas stripping membrane filter |
| CN102010032A (en) * | 2010-11-10 | 2011-04-13 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Membrane filtration water purifying bucket and water purifying method thereof |
| CN202569957U (en) * | 2012-03-02 | 2012-12-05 | 北京坎普尔环保技术有限公司 | Membrane filter with double filtration function |
-
2012
- 2012-03-02 CN CN2012100526681A patent/CN102631841A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768135A (en) * | 1993-09-02 | 1995-03-14 | Mitsubishi Rayon Co Ltd | Electrodialysis method |
| US7063788B2 (en) * | 1995-08-11 | 2006-06-20 | Zenon Environmental Inc. | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes |
| CN201305485Y (en) * | 2008-12-11 | 2009-09-09 | 孟广祯 | An immersed gas stripping membrane filter |
| CN101497000A (en) * | 2009-01-08 | 2009-08-05 | 王俊川 | Immersion type hollow fiber membrane component and complete equipment thereof |
| CN102010032A (en) * | 2010-11-10 | 2011-04-13 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Membrane filtration water purifying bucket and water purifying method thereof |
| CN202569957U (en) * | 2012-03-02 | 2012-12-05 | 北京坎普尔环保技术有限公司 | Membrane filter with double filtration function |
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| 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: 20120815 |