CN108404678A - A kind of MBR films off-line cleaning device and cleaning method - Google Patents
A kind of MBR films off-line cleaning device and cleaning method Download PDFInfo
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- CN108404678A CN108404678A CN201810244330.3A CN201810244330A CN108404678A CN 108404678 A CN108404678 A CN 108404678A CN 201810244330 A CN201810244330 A CN 201810244330A CN 108404678 A CN108404678 A CN 108404678A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/168—Use of other chemical agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/20—By influencing the flow
- B01D2321/2066—Pulsated flow
- B01D2321/2075—Ultrasonic treatment
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of MBR films off-line cleaning device and cleaning methods.Cleaning device of the present invention includes cleaning container, ultrasonic unit, oxidation unit, self-cleaning filter, water circulating pump, and the ultrasonic vibrator of ultrasonic unit is placed in cleaning container, and is connect with supersonic generator by high frequency lead；Water circulating pump water inlet is connect with cleaning container bottom, and water outlet is connected by pipeline and self-cleaning filter, and self-cleaning filter water outlet is connect by pipeline with oxidation unit water inlet, and oxidation unit water outlet is connect with cleaning container upper end water inlet.Cleaning method of the present invention includes：Membrane module to be cleaned is placed in cleaning container, ejected wash water to rinsing membrane module is added and is completely submerged, is cleaned by ultrasonic with ultrasonic unit；Ejected wash water is extracted from the bottom of cleaning container be promoted to filtration treatment in self-cleaning filter with water circulating pump；Self-cleaning filter water outlet introduces in oxidation unit and is back to cleaning container after progress oxidation processes, and cleaning is completed after cleaning 0.5 8h.
Description
Technical field
The present invention relates to a kind of Membrane cleaning device and method, especially a kind of MBR films off-line equipment and cleaning method.
Background technology
MBR films are a kind of special submerged ultrafiltrations, are usually placed in activated sludge, by negative-pressure ward by water by film
Silk extrudes outside to inside, and to realize mud-water separation, extensive use is able in sewage treatment field.Common MBR films are clear offline
The mode of washing is to lift film case to cleaning container, and chemical cleaning medicament is added and is impregnated, and carries out air-blowing purging.Chinese invention
Patent 201410169057.4 discloses a kind of cleaning method of submerged ultrafiltration in reusing sewage, mainly uses hydrochloric acid, lemon
Lemon acid, oxalic acid pickling, sodium hypochlorite, neopelex and sodium tripolyphosphate alkali cleaning and pickling, alkali cleaning are combined
Method.The use of a large amount of chemicals had both been easy to cause to damage to film, also led to largely to clean waste liquid being discharged into sewerage,
Increase sewage disposal system difficulty.
Invention content
The present invention is for problem existing for prior art Membrane cleaning, it is proposed that a kind of cleaning process is without using chemical drugs
Agent, and anacidity, alkali and strong oxidizing property waste water generate, to which the off-line cleaning device and method of damage will not be caused to MBR films.
The present invention is achieved especially by following technical solution：
A kind of MBR films off-line cleaning device, the device is mainly by cleaning container, ultrasonic unit, oxidation unit, self-cleaning
Filter, water circulating pump are constituted, and the ultrasonic unit is by ultrasonic vibrator, supersonic generator and high frequency lead structure
At the ultrasonic vibrator is placed in the cleaning container, and is connect with supersonic generator by high frequency lead；Institute
The water circulating pump water inlet stated is connect with cleaning container bottom, and the water outlet of water circulating pump is connected by pipeline and self-cleaning filter
It connects, self-cleaning filter water outlet is connect with oxidation unit water inlet, and oxidation unit water outlet connects with the import of cleaning container upper end
It connects, to make Membrane cleaning water return to cleaning after water circulating pump flows through self-cleaning filter and oxidation unit processing from cleaning container
Container recycles.
Wherein, the oxidation unit is preferably electroxidation device, by DC power supply, electroxidation slot, electrode plate and conducting wire
It constitutes, wherein DC power supply is connected by conducting wire with electrode plate.
The present invention also provides a kind of cleaning method based on above-mentioned MBR films off-line cleaning device, cleaning step includes：
1) membrane module to be cleaned is placed in cleaning container, ejected wash water to membrane module is added in cleaning container and is soaked completely
Not yet, it is cleaned by ultrasonic using ultrasonic unit, wherein ultrasonic frequency is 20kHz-40kHz, intensity 3-50kw/m2；
2) ejected wash water is extracted from the bottom of cleaning container be promoted to the self-cleaning that filtering accuracy is 5-100 μm with water circulating pump
In filter, the filtration treatment in self-cleaning filter；
3) and then self-cleaning filter is discharged to introduce in oxidation unit and carries out oxidation processes；The oxidation unit is preferred
Operation voltage for the electroxidation device being made of DC power supply, electroxidation slot, electrode plate and conducting wire, electroxidation device is 30-
60V, electric current 5-100A；
4) oxidation unit water outlet is back to cleaning container from cleaning container upper end, and control backflow water yield is 5-50m3/h；
5) after cleaning 0.5-8h, oxidation unit and ultrasonic unit are closed, the MBR films after cleaning are taken out, emptying cleaning
Water in container；
Wherein the ejected wash water is that fresh water or ultrafiltration membrane produce water.
In above-mentioned technology cleaning method,
The cleaning container is water tank or pond.
The ejected wash water addition is highly preferred to exceed membrane module 0.5-1.5m.
The self-cleaning filter filtering accuracy is preferably 10-50 μm.
The ultrasonic frequency is preferably 20kHz-40kHz, intensity 5-20kw/m2。
The preferred operations voltage of the electroxidation device is 30-60V, electric current 10-50A.
The backflow water yield is preferably 5-10m3/h。
A kind of MBR films off-line cleaning device of the present invention and cleaning method have the characteristics that compared with prior art：
1) apparatus of the present invention clean MBR films with by the way of oxidation unit use in conjunction using ultrasonic unit, profit
The huge energy generated with ultrasonic unit makes film surface pollutant be stripped, disperses even to emulsify, to de- from film surface
It falls；The various low-concentration oxidizing free love bases and newborn oxygen continuously generated using oxidation unit (especially electroxidation device),
In oxidation removal ejected wash water and the remaining organic matter of film surface；The bulky grain pollutant to fall off retains side by side through self-cleaning filter
Go out.The use in conjunction of ultrasonic unit, electroxidation device and self-cleaning filter can effectively realize the cleaning of MBR films, restore
Membrane flux.
2) use apparatus of the present invention to clean MBR films, entire cleaning process is not required to additional any chemical agent, anacidity, alkali with
And strong oxidizing property waste water generates；
3) cleaning method cleaning process of the present invention is simple, easy to operate, easily realizes automation.
Description of the drawings
Fig. 1 is a kind of flow diagram of MBR films off-line cleaning method.
Wherein 1-MBR membrane modules；2- cleaning containers；3- supersonic generators；4- ultrasonic activation plates；5- water circulating pumps；
6- self-cleaning filters；7- electroxidation slots；8- DC power supplies；9- high frequency leads；10- conducting wires；11- pipelines；12- valves.
Specific implementation mode
MBR films off-line cleaning device of the present invention and cleaning method are done with reference to the accompanying drawings and examples further details of
Illustrate, but the scope of protection of present invention is not limited to the range of embodiment restriction.
Embodiment 1
Using MBR films off-line cleaning device of the present invention and cleaning method to the MBR films in certain printing and dyeing industry garden sewage disposal
Component is cleaned offline, and cleaning device is packaged type, and line cleaning process is：MBR membrane modules 1 in one group of membrane cisterna are lifted
To cleaning water tank 2, while to the production water that ultrafiltration membrane is added is cleaned in water tank 2, water level exceeds MBR membrane module 1.5m, opens super
Sonic generator 3 is cleaned by ultrasonic under the effect of ultrasonic plate 4；ON cycle water pump 5 draws water from 2 bottom of cleaning water tank
It is promoted to self-cleaning filter 6, removes large particulate matter in water removal；Self-cleaning filter water outlet enters electroxidation slot 7, in electroxidation
Various strong oxidizing property groups are generated in slot 7,7 effluent recycling of electroxidation slot extremely cleans in water tank, regurgitant volume 5m3/h.According to upper
After stating cleaning process 2h, supersonic generator 3 and DC power supply are closed, MBR membrane modules 1 are taken out, given up in discharge cleaning water tank 2
Water, cleaning finish.Wherein, the filtering accuracy of self-cleaning filter 6 is 50 μm, ultrasonic frequency 30kHz, intensity 10kw/
m2, 7 operating voltage of electroxidation device is 50V, electric current 30A.
After the cleaning of above-mentioned apparatus, flow and operating parameter, the main working parameters of MBR membrane modules restore as follows：
| Transmembrane pressure (kPa) | Water yield (m3/h) | |
| Before cleaning | 37 | 103 |
| After cleaning | 19 | 136 |
Embodiment 2
Using MBR films off-line cleaning device of the present invention and cleaning method to one group of MBR of certain municipal sewage plant
Film is cleaned offline, and cleaning process is：The lifting of MBR membrane modules 1 is extremely cleaned in pond 2, while being added into cleaning pond 2
The production water of ultrafiltration membrane, water level exceed membrane module 0.5m, and ON cycle water pump 5 draws water from cleaning 2 bottom of pond and is promoted to self-cleaning
Filter 6 removes large particulate matter in water removal；The water outlet of self-cleaning filter 6 enters electroxidation slot 7, is generated in electroxidation slot 7 each
Kind strong oxidizing property group, 7 effluent recycling of electroxidation slot extremely clean in pond, regurgitant volume 8m3/h.According to above-mentioned cleaning process
After 0.5h, supersonic generator 3 and DC power supply are closed, MBR membrane modules are taken out, waste water in discharge cleaning pond 2 has cleaned
Finish.Wherein, the filtering accuracy of self-cleaning filter 6 is 10 μm, ultrasonic frequency 20kHz, frequency 5kw/m2, electroxidation dress
It is 30V, electric current 10A to set operating voltage.
After the cleaning of above-mentioned apparatus, flow and operating parameter, the main working parameters of MBR membrane modules restore as follows：
| Transmembrane pressure (kPa) | Water yield (m3/h) | |
| Before cleaning | 32 | 238 |
| After cleaning | 16 | 324 |
Embodiment 3
The MBR films of certain Love psychology processing system are cleaned using off-line cleaning method of the present invention, are cleaned
Device is packaged type, and cleaning process is：One group of MBR membrane module 1 lifting in MBR membrane cisternas is extremely cleaned in water tank 2, while to
Film is added in water tank 2 and produces water, water level exceeds membrane module 1.1m, and ON cycle water pump 5 draws water from 2 bottom of cleaning water tank and is promoted to
Self-cleaning filter 6 removes large particulate matter in water removal；The water outlet of self-cleaning filter 6 enters electroxidation slot 7, in electroxidation slot 7
Generate various strong oxidizing property groups, 7 effluent recycling of electroxidation slot is to cleaning water tank, regurgitant volume 10m3/h.According to above-mentioned flow
After cleaning 4h, supersonic generator 3 and DC power supply are closed, is taken the film out, waste water in discharge cleaning water tank, cleaning finishes.Its
In, the filtering accuracy of self-cleaning filter 6 is 100 μm, ultrasonic frequency 40kHz, ultrasound energy density 20kw/cm2,
Electroxidation device operating voltage is 60V, electric current 50A.
After the cleaning of above-mentioned apparatus, flow and operating parameter, the main working parameters of MBR membrane modules restore as follows：
| Transmembrane pressure (kPa) | Water yield (m3/h) | |
| Before cleaning | 38 | 20 |
| After cleaning | 21 | 26 |
Claims (10)
1. a kind of MBR films off-line cleaning device, it is characterised in that：Described device includes cleaning container, ultrasonic unit, oxidation dress
It sets, self-cleaning filter, water circulating pump, the ultrasonic unit is led by ultrasonic vibrator, supersonic generator and high frequency
Line is constituted, and wherein ultrasonic vibrator is placed in the cleaning container, and is connect with supersonic generator by high frequency lead；
The water circulating pump water inlet is connect with cleaning container bottom, and the water outlet of water circulating pump passes through pipeline and self-cleaning filter
Even, self-cleaning filter water outlet is connect by pipeline with oxidation unit water inlet, on oxidation unit water outlet and cleaning container
Hold water inlet connection.
2. the apparatus according to claim 1, which is characterized in that the oxidation unit is electroxidation device, by direct current
Source, electroxidation slot, electrode plate and conducting wire are constituted, and wherein DC power supply is connected by conducting wire with electrode plate.
3. a kind of method for cleaning MBR films with MBR films off-line cleaning device described in claim 1, which is characterized in that including such as
Lower step：
1) membrane module to be cleaned is placed in cleaning container, ejected wash water to membrane module is added in cleaning container and is completely submerged,
It is cleaned by ultrasonic using ultrasonic unit, wherein ultrasonic frequency is 20kHz-40kHz, intensity 3-50kw/m2；
2) ejected wash water is extracted from the bottom of cleaning container be promoted to the self-cleaning filtering that filtering accuracy is 5-100 μm with water circulating pump
In device, the filtration treatment in self-cleaning filter；
3) and then self-cleaning filter is discharged to introduce in oxidation unit and carries out oxidation processes；
4) oxidation unit water outlet is back to cleaning container from cleaning container upper end, and control backflow water yield is 5-50m3/h；
5) after cleaning 0.5-8h, oxidation unit and ultrasonic unit are closed, the MBR films after cleaning are taken out, is vented cleaning container
Interior water；
Wherein the ejected wash water is that fresh water or ultrafiltration membrane produce water.
4. according to the method described in claim 3, it is characterized in that, the oxidation unit be by DC power supply, electroxidation slot,
The electroxidation device that electrode plate and conducting wire are constituted, and the operation voltage of electroxidation device is 30-60V, electric current 5-100A.
5. according to the method described in claim 3, it is characterized in that, the cleaning container is water tank or pond.
6. according to the method described in claim 3, it is characterized in that, the height that the ejected wash water is added is to exceed membrane module
0.5-1.5m。
7. according to the method described in claim 3, it is characterized in that, the self-cleaning filter filtering accuracy is 10-50 μm.
8. according to the method described in claim 3, it is characterized in that, the ultrasonic frequency is 20kHz-40kHz, intensity is
5-20kw/m2。
9. according to the method described in claim 3, it is characterized in that, the backflow water yield is 5-10m3/h。
10. according to the method described in claim 4, it is characterized in that, the operation voltage of the electroxidation device be 30-60V,
Electric current is 10-50A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810244330.3A CN108404678A (en) | 2018-03-23 | 2018-03-23 | A kind of MBR films off-line cleaning device and cleaning method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810244330.3A CN108404678A (en) | 2018-03-23 | 2018-03-23 | A kind of MBR films off-line cleaning device and cleaning method |
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| Publication Number | Publication Date |
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| CN108404678A true CN108404678A (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810244330.3A Pending CN108404678A (en) | 2018-03-23 | 2018-03-23 | A kind of MBR films off-line cleaning device and cleaning method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110327785A (en) * | 2019-07-08 | 2019-10-15 | 南京环美科技股份有限公司 | A kind of nanofiltration/reverse osmosis single branch membrane component detection cleaning device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884631A (en) * | 2006-05-25 | 2006-12-27 | 天津理工大学 | Method and device for cleaning organic matter using electrochemical method |
| CN202606042U (en) * | 2012-03-23 | 2012-12-19 | 苏州市新能膜材料科技有限公司 | Membrane cleaning device |
-
2018
- 2018-03-23 CN CN201810244330.3A patent/CN108404678A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884631A (en) * | 2006-05-25 | 2006-12-27 | 天津理工大学 | Method and device for cleaning organic matter using electrochemical method |
| CN202606042U (en) * | 2012-03-23 | 2012-12-19 | 苏州市新能膜材料科技有限公司 | Membrane cleaning device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110327785A (en) * | 2019-07-08 | 2019-10-15 | 南京环美科技股份有限公司 | A kind of nanofiltration/reverse osmosis single branch membrane component detection cleaning device |
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Application publication date: 20180817 |
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