CN102371123A - On-line cleaning method of immersed hollow fiber membrane module - Google Patents
On-line cleaning method of immersed hollow fiber membrane module Download PDFInfo
- Publication number
- CN102371123A CN102371123A CN2010102641581A CN201010264158A CN102371123A CN 102371123 A CN102371123 A CN 102371123A CN 2010102641581 A CN2010102641581 A CN 2010102641581A CN 201010264158 A CN201010264158 A CN 201010264158A CN 102371123 A CN102371123 A CN 102371123A
- Authority
- CN
- China
- Prior art keywords
- inner chamber
- medicament
- film
- membrane
- wall
- 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
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to an on-line cleaning method of an immersed hollow fiber membrane module, comprising the following steps: injecting chemicals in the inner cavity of the membrane, soaking the inner wall of the membrane wire for 0.5-60 min, letting partial chemicals penetrate into the outer wall of the membrane wire with the effect of osmotic pressure when soaking to clean the inner cavity, membrane apertures and outer wall simultaneously; carrying out circulating cleaning on the inner cavity of the membrane, applying pressures while carrying out circulating cleaning to let partial chemicals penetrate to the outer wall of the membrane wire through the membrane apertures to clean the inner cavity, membrane apertures and outer wall simultaneously.
Description
Technical field
The invention belongs to the film field of washing, a kind of cleaning method of membrane module is provided, specifically, the invention provides a kind of immersion hollow fiber film assembly on-line cleaning method.
Background technology
MBR (membrane bioreactor) treatment of high concentration organic wastewater adopts the submerged membrane assembly often; So the water quality that the immersion hollow fiber film assembly is handled has following characteristics usually: (1) water quality is complicated; Harmfulness is big, wherein most being classified as in the blacklist of China and U.S. EPA (Environmental Protection Department) environment priority pollutants; (2) COD (COD) and BOD
5(five-day BOD) concentration is high, and COD reaches as high as 90000mg/L, BOD
5Reach as high as 38000mg/L; (3) salt content is high, and common salt is mainly chloride, sulfate and phosphate etc.; (4) the dark and foul smelling of colourity; (5) the nutrient serious disproportion of microorganism needs, common organic matter, nitrogen content height, and P elements comparatively lacks; (6) change of water quality is big, and biodegradability is low.Because the existence of these characteristics makes film pollute aggravation, the strainability of film is restricted like this.
It is the necessary condition that controlling diaphragm pollutes that film cleans; The method of at present membrane module being cleaned generally has physics to clean and two kinds of Chemical cleaning; And the only more suitable water inlet conditions of general physical cleaning are relatively good, and film pollutes low weight occasion, is not very suitable for the submerged membrane assembly.Have only Chemical cleaning just can membrane contaminant be cleaned thoroughly, recover membrane flux better.Common chemical is cleaned and is divided into on-line cleaning and off-line cleaning again at present; It is membrane module in the membrane cisterna to be disassembled soak that off-line cleans; But inadequate problem can appear soaking in immersion process; Promptly clean not thoroughly, and the dismounting membrane module is installed and also can be made cleaning process become complicated.So the chemical cleaning method that often uses is exactly an on-line cleaning.But some on-line cleaning methods of using at present are empty with concentrated water drainage in the membrane cisterna, in membrane cisterna, fill medicament, so just increased dosing, caused serious chemical agent to pollute.
Up to now, this area is still untapped to go out a kind ofly can to make that whole film silk inside and outside wall and fenestra are all cleaned completely, reduces the use of medicament simultaneously effectively, significantly reduces the immersion hollow fiber film assembly on-line cleaning method of secondary pollution.
Therefore, this area presses for to develop and a kind ofly can make that whole film silk inside and outside wall and fenestra are all cleaned completely, reduces the use of medicament simultaneously effectively, significantly reduces the immersion hollow fiber film assembly on-line cleaning method of secondary pollution.
Summary of the invention
The invention provides a kind of immersion hollow fiber film assembly on-line cleaning method of novelty, thereby solved the problem that exists in the prior art.
The invention provides a kind of immersion hollow fiber film assembly on-line cleaning method, this method comprises:
Medicament is injected the film inner chamber, film silk inwall was soaked 0.5-60 minute, when soaking, under the effect of osmotic pressure, the part medicament is penetrated into film silk outer wall through fenestra, thereby inner chamber, fenestra and outer wall are cleaned simultaneously, and
The film inner chamber is done wash cycles, in wash cycles, exert pressure, make the part medicament be penetrated into film silk outer wall, thereby inner chamber, fenestra and outer wall are cleaned simultaneously through fenestra.
One preferred embodiment in, let medicament inject the film inner chamber naturally through the gravity effect, the medicament of injection leaves standstill the film inner chamber is soaked.
Another preferred embodiment in, through the pump power effect medicament is injected the film inner chamber, the medicament of injection leaves standstill the film inner chamber is soaked, and perhaps inner chamber is carried out wash cycles.
Another preferred embodiment in, through ejector medicament is injected the film inner chamber, the medicament of injection leaves standstill the film inner chamber is soaked, and perhaps inner chamber is carried out wash cycles.
Another preferred embodiment in, the dosing of injection calculates according to the summation of pharmaceutical quantities in the volume of film inner chamber and the pipeline; The dosing of film inner chamber wash cycles calculates according to the summation of the pharmaceutical quantities of the volume of film inner chamber and pipeline, pump and medicine-chest consumption.
Another preferred embodiment in, when utilizing the gravity effect that medicament is injected the film inner chamber, medicine-chest is placed on membrane cisterna top greater than 0.2 meter height; Medicine-chest is placed on the height of membrane cisterna top to be confirmed according to the height of membrane module, 0.1 meter of the every increase of membrane module height, and the height that medicine-chest is placed increases 0.1-3 rice.
Another preferred embodiment in, said medicament is acid or alkali; Said bronsted lowry acids and bases bronsted lowry is placed on respectively in the different medicine-chests, to avoid the reaction of soda acid self.
Description of drawings
Fig. 1 is the sketch map according to the on-line cleaning system of an embodiment of the invention.
Fig. 2 is the sketch map of operation result after the on-line cleaning among the embodiment 1.
Fig. 3 is the sketch map of operation result after the on-line cleaning among the embodiment 2.
The specific embodiment
Inventor of the present invention finds after having passed through extensive and deep research, when medicament circulation time in the film silk, can well clean film silk inwall, can effectively remove all contaminations in the film silk; Simultaneously, because film silk inner chamber medicament has certain pressure, medicament can slowly be penetrated into film silk outer wall from fenestra, makes that like this pollutant in the fenestra is also well cleaned; And the medicament that is penetrated into film silk outer wall also scrubs film silk outer wall simultaneously, makes that whole film silk inside and outside wall and fenestra are all cleaned completely; And the use amount that can accurately calculate medicament according to the volume and the on-the-spot pipeline condition of film silk inner chamber during cleaning can not cause the medicament waste, has reduced secondary pollution.Based on above-mentioned discovery, the present invention is accomplished.
The invention provides a kind of immersion hollow fiber film assembly on-line cleaning method, this method comprises: medicament is injected outer press mold inner chamber, film silk inwall was soaked 0.5-60 minute; Again the film inner chamber is done wash cycles; In wash cycles, through applying certain pressure, let the part medicament be penetrated into film silk outer wall, outer surface is cleaned; That is, film silk inner chamber, fenestra and outer wall are cleaned simultaneously.
In the present invention, medicament injects the inner mode of film silk can let medicament inject film silk inner chamber naturally through the gravity effect, and the medicament of injection leaves standstill the film inner chamber is soaked; Perhaps through the pump power effect medicament is injected film silk inner chamber, the medicament of injection leaves standstill the film inner chamber is soaked, and also can carry out wash cycles to inner chamber; Perhaps through ejector medicament is injected film silk inner chamber, the medicament of injection leaves standstill the film inner chamber is soaked, and also can carry out wash cycles to inner chamber.
Preferably, on-line cleaning method of the present invention is applicable to that hollow-fibre membrane silk two ends are all opened wide in the assembly.
In the present invention, consumption that can the accurate Calculation medicament during cleaning, the dosing of injection are the summation of pharmaceutical quantities in volume and the part pipeline of film silk inner chamber; The dosing of wash cycles is the pharmaceutical quantities summation that film silk cavity volume and pipeline, pump and medicine-chest consume in the film silk.
Preferably, when utilizing the gravity effect that medicament is injected film silk inside, the height that medicine-chest is placed on the membrane cisterna top is greater than 0.2 meter; Medicine-chest is placed on the height of membrane cisterna top to be confirmed according to the height of membrane module, 0.1 meter of the every increase of membrane module height, and the height that medicine-chest is placed need increase 0.1-3 rice to be regulated.
In the present invention, the Chemical cleaning medicament can be acid, also can be alkali, and bronsted lowry acids and bases bronsted lowry is placed on respectively in the different medicine-chests, to avoid the reaction of soda acid self.
Below referring to accompanying drawing.
Fig. 1 is the sketch map according to the on-line cleaning system of an embodiment of the invention.As shown in Figure 1, the on-line cleaning system comprises membrane module 1, membrane cisterna 2, medicine- chest 5,6,9,10, valve 3,4,7,8,11,12,13,15,16, pump or ejector 14; Close two product water valves 3 and 4 of membrane module 1 during on-line cleaning earlier; In medicine- chest 9 and 10, pack into acid or alkali are when using wherein a kind of medicament, when for example using the medicament in the medicine-chest 9; Open valve 13,15,16; Close other valves 7,8,11,12, open pump or ejector 14, medicament is injected the membrane module inner chamber; Back shut off valve 13,15,16 left standstill 0.5-60 minute; When leaving standstill, because the effect of osmotic pressure, the part medicament can be penetrated into film silk outer wall, and film silk inner chamber, fenestra and outer wall are done cleaning simultaneously; When wash cycles was done in film silk inside, open valve 13,15,16 was opened pump or ejector 14, let medicament in the circulation of film silk inner chamber, and owing to the pressure effect, the part medicament can be penetrated into film silk outer wall, and fenestra and film silk outer wall are scrubbed simultaneously simultaneously; When the medicament in the use medicine-chest 10, open valve 11,12,13, shut off valve 7,8,15,16 is opened pump or ejector 14, and medicament is injected the membrane module inner chamber, and back shut off valve 11,12,13 left standstill 0.5-60 minute; After open valve 11,12,13 again, open pump or ejector 14, let medicament in the circulation of film silk inner chamber, simultaneously because the pressure effect, the part medicament can be penetrated into film silk outer wall, and fenestra and film silk outer wall are scrubbed simultaneously.
Medicament can also utilize the gravity effect when injecting film silk inside, promptly in medicine- chest 5 and 6, injects acid or alkali, and open valve 7 and 8 injects the membrane module inner chamber with medicament through gravity; Left standstill 0.5-60 minute, medicine- chest 5 and 6 is placed on the height of membrane cisterna top and wants＞0.2 meter; Medicine-chest is placed on the height of membrane cisterna top to be confirmed according to the membrane module height, 0.1 meter of the every increase of membrane module height, and medicine-chest is placed highly needs increase 0.1-3 rice to regulate.
Major advantage of the present invention is:
Method of the present invention can be so that whole film silk inside and outside wall and fenestra be all cleaned completely; And the use amount that can accurately calculate medicament according to the volume and the on-the-spot pipeline condition of film silk inner chamber during cleaning can not cause the medicament waste, has reduced secondary pollution.
Embodiment
Further set forth the present invention below in conjunction with concrete embodiment.But, should be understood that these embodiment only are used to the present invention is described and do not constitute limitation of the scope of the invention.The test method of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.Except as otherwise noted, all percentage and umber are by weight.
Embodiment 1:
Jiangyin refuse-burning plant percolate is handled pilot plant test, adopts LJ1E1-1500PVDF (polyvinylidene fluoride) membrane module four curtains, and the processing water yield is 10m
3/ D, the method for operation is the constant current operation during test, after operating pressure rises, carries out on-line cleaning.10 months test periods, duration of test adopts online cleaning way, and operation pressure was stable, as shown in Figure 2 always in 10 months.
Embodiment 2:
Beijing Running-water Company pilot plant test adopts LJ1E-2000-V160 type PVC (polyvinyl chloride) membrane module eight curtains, handles water yield 8m
3/ h, the method for operation is the constant current operation during test, after operating pressure rises, carries out on-line cleaning.6 months test periods, duration of test adopts online cleaning way, and operation pressure was stable, as shown in Figure 3 always in 6 months.
All documents in that the present invention mentions are all quoted as a reference in this application, are just quoted such as a reference separately as each piece document.Should be understood that in addition after having read above-mentioned teachings of the present invention, those skilled in the art can do various changes or modification to the present invention, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (7)
1. immersion hollow fiber film assembly on-line cleaning method, this method comprises:
Medicament is injected the film inner chamber, film silk inwall was soaked 0.5-60 minute, when soaking, under the effect of osmotic pressure, the part medicament is penetrated into film silk outer wall through fenestra, thereby inner chamber, fenestra and outer wall are cleaned simultaneously; And
The film inner chamber is done wash cycles, in wash cycles, exert pressure, make the part medicament be penetrated into film silk outer wall, thereby inner chamber, fenestra and outer wall are cleaned simultaneously through fenestra.
2. the method for claim 1 is characterized in that, lets medicament inject the film inner chamber naturally through the gravity effect, and the medicament of injection leaves standstill the film inner chamber is soaked.
3. the method for claim 1 is characterized in that, through the pump power effect medicament is injected the film inner chamber, and the medicament of injection leaves standstill the film inner chamber is soaked, and perhaps inner chamber is carried out wash cycles.
4. the method for claim 1 is characterized in that, through ejector medicament is injected the film inner chamber, and the medicament of injection leaves standstill the film inner chamber is soaked, and perhaps inner chamber is carried out wash cycles.
5. the method for claim 1 is characterized in that, the dosing of injection calculates according to the summation of pharmaceutical quantities in the volume of film inner chamber and the pipeline; The dosing of film inner chamber wash cycles calculates according to the summation of the pharmaceutical quantities of the volume of film inner chamber and pipeline, pump and medicine-chest consumption.
6. method as claimed in claim 2 is characterized in that, when utilizing the gravity effect that medicament is injected the film inner chamber, medicine-chest is placed on membrane cisterna top greater than 0.2 meter height; Medicine-chest is placed on the height of membrane cisterna top to be confirmed according to the height of membrane module, 0.1 meter of the every increase of membrane module height, and the height that medicine-chest is placed increases 0.1-3 rice.
7. the method for claim 1 is characterized in that, said medicament is acid or alkali; Said bronsted lowry acids and bases bronsted lowry is placed on respectively in the different medicine-chests, to avoid the reaction of soda acid self.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102641581A CN102371123A (en) | 2010-08-24 | 2010-08-24 | On-line cleaning method of immersed hollow fiber membrane module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102641581A CN102371123A (en) | 2010-08-24 | 2010-08-24 | On-line cleaning method of immersed hollow fiber membrane module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102371123A true CN102371123A (en) | 2012-03-14 |
Family
ID=45790681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102641581A Pending CN102371123A (en) | 2010-08-24 | 2010-08-24 | On-line cleaning method of immersed hollow fiber membrane module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102371123A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014050789A (en) * | 2012-09-06 | 2014-03-20 | Mitsubishi Rayon Co Ltd | Method for cleaning membrane module |
| CN103880164A (en) * | 2012-12-20 | 2014-06-25 | 上海安赐机械设备有限公司 | Membrane processing apparatus and processing method for papermaking middle-stage wastewater |
| CN105499199A (en) * | 2015-12-02 | 2016-04-20 | 北京碧水源膜科技有限公司 | On-line cleaning device and complete membrane filament gel forming equipment comprising same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09103661A (en) * | 1995-10-12 | 1997-04-22 | Kurita Water Ind Ltd | Immersion type membrane separation apparatus |
| JPH11244673A (en) * | 1998-02-26 | 1999-09-14 | Kawasaki Steel Corp | Washing of membrane |
| CN1772355A (en) * | 2005-11-11 | 2006-05-17 | 清华大学 | On-line chemical cleaning method for membrane bioreactor |
| CN1852760A (en) * | 2003-09-22 | 2006-10-25 | 美国废水过滤集团公司 | Backwash and cleaning method |
| JP2007105570A (en) * | 2005-10-11 | 2007-04-26 | Daicel Chem Ind Ltd | Continuous operation method of water cleaning system |
| CN101406808A (en) * | 2008-11-14 | 2009-04-15 | 太平洋水处理工程有限公司 | Immersion type hyperfiltration membrane technique operated in the same diaphragm cell and various membrane units |
| JP2009247936A (en) * | 2008-04-02 | 2009-10-29 | Japan Organo Co Ltd | Method of inline-cleaning immersion type membrane-separation device |
| CN101653701A (en) * | 2008-08-22 | 2010-02-24 | 天津膜天膜工程技术有限公司 | Method and device for chemically cleaning hollow fiber filtration membrane |
-
2010
- 2010-08-24 CN CN2010102641581A patent/CN102371123A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09103661A (en) * | 1995-10-12 | 1997-04-22 | Kurita Water Ind Ltd | Immersion type membrane separation apparatus |
| JPH11244673A (en) * | 1998-02-26 | 1999-09-14 | Kawasaki Steel Corp | Washing of membrane |
| CN1852760A (en) * | 2003-09-22 | 2006-10-25 | 美国废水过滤集团公司 | Backwash and cleaning method |
| JP2007105570A (en) * | 2005-10-11 | 2007-04-26 | Daicel Chem Ind Ltd | Continuous operation method of water cleaning system |
| CN1772355A (en) * | 2005-11-11 | 2006-05-17 | 清华大学 | On-line chemical cleaning method for membrane bioreactor |
| JP2009247936A (en) * | 2008-04-02 | 2009-10-29 | Japan Organo Co Ltd | Method of inline-cleaning immersion type membrane-separation device |
| CN101653701A (en) * | 2008-08-22 | 2010-02-24 | 天津膜天膜工程技术有限公司 | Method and device for chemically cleaning hollow fiber filtration membrane |
| CN101406808A (en) * | 2008-11-14 | 2009-04-15 | 太平洋水处理工程有限公司 | Immersion type hyperfiltration membrane technique operated in the same diaphragm cell and various membrane units |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014050789A (en) * | 2012-09-06 | 2014-03-20 | Mitsubishi Rayon Co Ltd | Method for cleaning membrane module |
| CN103880164A (en) * | 2012-12-20 | 2014-06-25 | 上海安赐机械设备有限公司 | Membrane processing apparatus and processing method for papermaking middle-stage wastewater |
| CN103880164B (en) * | 2012-12-20 | 2015-08-05 | 上海安赐机械设备有限公司 | One is applied to papermaking midcourse wastewater membrane treatment appts and treatment process |
| CN105499199A (en) * | 2015-12-02 | 2016-04-20 | 北京碧水源膜科技有限公司 | On-line cleaning device and complete membrane filament gel forming equipment comprising same |
| CN105499199B (en) * | 2015-12-02 | 2017-09-29 | 北京碧水源膜科技有限公司 | A kind of on-line cleaning device and the film silk gel sizing complete set of equipments comprising the device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103949163A (en) | Method for cleaning immersed ultrafiltration membrane in wastewater reuse | |
| CN202936241U (en) | Device capable of circularly cleaning MBR (Membrane Biological Reactor) membrane unit in offline way | |
| CN101829505A (en) | Chemical cleaning method of hollow fiber membrane and device thereof | |
| CN108434999B (en) | Stable online cleaning membrane bioreactor | |
| CN111286921A (en) | Cleaning device applying electrolyzed water, use method and application thereof | |
| CN103351056A (en) | Apparatus and method of online chemical backwashing membrane assembly | |
| CN110871034A (en) | MBR plate-type membrane cleaning agent and cleaning method | |
| CN102371123A (en) | On-line cleaning method of immersed hollow fiber membrane module | |
| CN201128697Y (en) | Membrane method bubble-free aeration machine | |
| CN101934200B (en) | Method for cleaning hollow fiber membrane | |
| CN110127842A (en) | A kind of fission submerged membrane system | |
| CN205275296U (en) | Microporous aerator | |
| CN107974357A (en) | A kind of heavy oil dirt biological cleaner and preparation method thereof | |
| CN104056555B (en) | Doughnut cleaning agents of membrane and its preparation method and application | |
| CN109569298A (en) | A kind of fermentation liquid membrane filtering method | |
| CN211921981U (en) | Cleaning device using electrolyzed water and washing machine using cleaning device | |
| CN101293702A (en) | Method for controlling membrane pollution in diaphragm bioreactor on line with medium, low voltage | |
| CN205367769U (en) | Intelligence water circulating system | |
| CN202953861U (en) | Overhead tank type washing equipment for automatic control membrane bioreactor assembly | |
| CN210505738U (en) | Split immersed membrane system | |
| CN207294315U (en) | A kind of new membrane bioreactor wastewater treatment equipment | |
| CN109201644B (en) | Cleaning method for bacterial sludge breeding on inner wall of water inlet pipeline of NF/RO membrane unit | |
| CN202529956U (en) | Car-washing wastewater circulating treatment plant | |
| CN207254117U (en) | The cleaning device of beer filtration ceramic membrane | |
| CN205710115U (en) | A kind of soaked datatron of aeration type oxygen rich air |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120314 |