CN105923754B - A method of cleaning MBR in real time in wastewater treatment process - Google Patents
A method of cleaning MBR in real time in wastewater treatment process Download PDFInfo
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- CN105923754B CN105923754B CN201610409520.7A CN201610409520A CN105923754B CN 105923754 B CN105923754 B CN 105923754B CN 201610409520 A CN201610409520 A CN 201610409520A CN 105923754 B CN105923754 B CN 105923754B
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- mbr
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
-
- 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
- B01D2321/18—Use of gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
The method that the invention discloses a kind of to clean MBR in real time in wastewater treatment process, in the aerobic tank equipped with MBR, using ozone and air intermittent aerating, air aeration amount is 1 4L/ (m2Min), lasting aeration；Ozonation aerated amount is 0.05 0.4L/ (m2Min), ozonation aerated 5~30s of time, ozonation aerated 2~10min of period.The present invention restrained effectively fouling membrane, realize the longtime running of MBR techniques, and MBR water yields greatly increase.Present invention process flow is simple, efficient, and effluent quality is high, at low cost, may be implemented to promote and apply.
Description
Technical field
The method of the present invention relates to a kind of in wastewater treatment process on-line cleaning MBR, belongs to field of waste water treatment.
Background technology
With the continuous consumption of economic fast development and water resource, shortage of water resources has become global problem.It is right
Sewage recycled, is regenerated and reuse, the problem of can efficiently solving shortage of water resources.
Membrane bioreactor (MBR) is the novel water technology for being combined membrane separation technique with biologic treating technique,
Have many advantages, such as that effluent quality is high, stable, management is convenient, sludge yield is few, has in waste water recycling and recycling field
Extremely wide application prospect.However, in the process of running, membrane module is easy to happen pollution, the reduction of membrane module flux is resulted in；
And membrane module cleaning process is sufficiently complex, and it is relatively low to cause membrane module utilization rate so that MBR operating costs greatly increase, this is all
Applications of the MBR in water process and Treated sewage reusing is limited to a certain extent.Thus, efficiently antipollution MBR is ten for exploitation
Point it is necessary to.
Currently, MBR mainly uses PVDF hollow fiber film assemblies, wherein PVDF to pass through hydrophilic modifying to improve its anti-pollution more
Metachromia.With the operation of MBR techniques, pvdf membrane hole and film surface gradually adsorb organic matter, cause the hydrophily of PVDF to reduce, film
Contamination phenomenon increases, and membrane flux is caused to gradually decrease.Currently, mostly using the modes roots such as air aeration, washing, chemical reagent cleaning
According to the degree rinsing membrane module of fouling membrane, it is made to restore membrane flux.However, in air aeration, aeration production water 8 minutes, sky exposes
Water is not produced 2 minutes, cause the practical production water running time obviously on the low side；It is clear to membrane module to wash the double production water speed of generally use
It washes, leads to the reduction of practical water yield, and membrane module needs to take out cleaning out of membrane cisterna, thus run time is long；Chemistry
Reagent cleans the solution such as generally use sodium hypochlorite and is cleaned to membrane module, needs to take out membrane module out of membrane cisterna, technological operation
Sufficiently complex, scavenging period is long, and the practical water that produces is reduced.The above cleaning way causes to clean there is no the hydrophily for restoring PVDF
Period is shorter and shorter, has seriously affected the application of MBR techniques.Thus, the cleaning that exploitation MBR is run steadily in the long term is very
Important.
Although there is the technique using ozone treatment MBR at present, it pre-processes sewage simply by ozone, subtracts
The COD etc. of few sewage, or MBR is taken out, waste water treatment process is interrupted, it is cleaned using other technique,
How MBR to be made to be reused in actual wastewater treatment process, this is that those skilled in the art want to realize for a long time
Target.
Invention content
The purpose of the present invention is to provide it is a kind of make MBR run steadily in the long term water outlet in wastewater treatment process it is clear in real time
The method for washing MBR.
Technical scheme of the present invention：
A method of cleaning MBR in real time in wastewater treatment process, in the aerobic tank equipped with MBR, expose into ozone with
Air, air aeration amount are 1-4L/ (m2Min), air is persistently aerated；Ozonation aerated amount is 0.05-0.4L/ (m2Min),
Ozone intermittent aerating, ozonation aerated 5~30s of time, ozonation aerated 2~10min of period.
The present invention further comprises following preferred technical solution：
In preferred scheme, ozone is passed through mouth and is arranged in around MBR.
Ozone is concentrated mainly on around membrane module and is intermittent, not only to the microorganism in aerobic tank substantially without shadow
It rings, additionally it is possible to while obtaining efficient cleaning performance.
It is ozonation aerated using PLC control intervals in preferred scheme, ozone, the ozone are obtained by ozone generator
The ozone output of generator is 1~5kg/h.
In preferred scheme, the MBR is immersion PVDF hollow fiber film assemblies.
In preferred scheme, the membrane aperture of the MBR is 0.03~0.45 μm.
In preferred scheme, the membrane flux of the MBR is 15~40L/ (m2·h)。
In preferred scheme, the oxyty in the aerobic tank is more than 2mg/L.
In preferred scheme, the influent quality COD of the aerobic tank is 200-500mg/L.
In preferred scheme, the ammonia-nitrogen content of the aerobic tank is 30-60mg/L, total phosphorus content 3-10mg/L.
In preferred scheme, the waste water passes through anoxic pond, aerobic tank successively using continuum micromeehanics.
In preferred scheme, the oxyty of the anoxic pond is 0.2~0.5mg/L.
By the above preferred scheme, the acquisition of advantageous effect of the present invention can be further ensured.
Compared with the prior art, the advantageous effects that technical scheme of the present invention is brought：
The use of MBR can effectively be handled waste water, but the pollution of membrane bioreactor is big in the prior art
Its actual processing effect is reduced greatly, and existing conventional treatment is to be drawn off, and is cleaned to it, then adds wastewater disposal basin
Middle reuse, but such processing procedure is very complicated, can also largely effect on the treatment effect of waste water.
For above-mentioned present situation, inventor has done a large amount of experiment, has finally just obtained the present invention's by largely studying
Scheme obtains the unexpected effect for cleaning MBR in real time in wastewater treatment process by using the solution of the present invention.
In specific processing procedure, inventor is passed through by using ozone and air intermittent aerating into aerobic tank
It the aeration quantity of control air, ozonation aerated amount, ozonation aerated time, ozonation aerated period, not only realizes at good waste water
Manage effect, it is most important that can effectively be cleaned to MBR simultaneously, further increase waste water treatment efficiency.This is to this field
For have very important realistic meaning, huge economic benefit can be brought.
The present invention greatly controls the fouling membrane of MBR, and can restore even to improve its hydrophily, effectively enhances it
Resistance tocrocking.Moreover, MBR can be discharged with longtime running, cleaning need not be interrupted.Ozone is concentrated mainly on around membrane module and is
It is intermittent, the microorganism in aerobic tank is not influenced substantially.
The present invention effectively on-line cleaning MBR, solution MBR membrane pollution problems can realize the long-term fortune of MBR techniques
Row, MBR water yields greatly increase.Moreover, this process MBR stable operations always are discharged.This method is simple, efficient, effluent quality
Height, it is at low cost, it may be implemented to promote and apply.
Description of the drawings
Fig. 1 is the comparison of the MBR transmembrane pressures of embodiment 1 and comparative example 1-3.
Specific implementation mode
Embodiment 1
It is water inlet, influent quality COD about 250mg/L, ammonia nitrogen about 20mg/L, total phosphorus about 4mg/L with municipal sanitary wastewater.It is whole
A technique includes mainly anoxic pond, aerobic tank, membrane module, ozone generator and aerator etc..Waste water passes through anoxic pond successively
And aerobic tank, water is discharged out of membrane module using suction in aerobic tank.Dissolved oxygen in anoxic pond maintains 0.3mg/L, good
The dissolved oxygen in oxygen pond maintains 3mg/L, and the aperture of MBR is 0.05 μm, and membrane flux is maintained 20L/ (m2H), air aeration amount 2L/
(m2Min), ozonation aerated amount 0.1L/ (m2Min), ozone output 2kg/h, ozonation aerated time are 10s, aeration period
For 5min.The transmembrane pressure (TMP) of MBR is with the relationship of time as shown in Figure 1, finding to expose jointly using interval ozone and air
The TMP of gas, MBR slowly rises, and changes unobvious, can effectively inhibit fouling membrane phenomenon.
Comparative example 1
It is water inlet, influent quality COD about 250mg/L, ammonia nitrogen about 20mg/L, total phosphorus about 4mg/L with municipal sanitary wastewater.It is whole
A technique includes mainly anoxic pond, aerobic tank, membrane module and aerator etc..Waste water passes through anoxic pond and aerobic tank successively,
Water is discharged out of membrane module using suction in aerobic tank.Dissolved oxygen in anoxic pond maintains 0.3mg/L, the dissolved oxygen dimension of aerobic tank
It holds in 3mg/L, the aperture of MBR is 0.05 μm, and membrane flux is maintained 20L/ (m2H), air aeration amount 2L/ (m2·min)。MBR
Transmembrane pressure (TMP) and time relationship as shown in Figure 1, as the TMP of the operation MBR of time is significantly increased.
Comparative example 2
It is water inlet, influent quality COD about 250mg/L, ammonia nitrogen about 20mg/L, total phosphorus about 4mg/L with municipal sanitary wastewater.It is whole
A technique includes mainly anoxic pond, aerobic tank, membrane module and aerator etc..Entire technique include mainly anoxic pond, aerobic tank,
Membrane module, ozone generator and aerator etc..Waste water passes through anoxic pond and aerobic tank successively, will using suction in aerobic tank
Water is discharged out of membrane module.Dissolved oxygen in anoxic pond maintains 0.3mg/L, and the dissolved oxygen in aerobic tank maintains 3mg/L, MBR's
Aperture is 0.05 μm, and membrane flux is maintained 20L/ (m2H), air aeration amount 2L/ (m2Min), ozonation aerated amount 0.01L/
(m2Min), ozone output 2kg/h, ozonation aerated time are 10s, aeration period 5min.It is found by Fig. 1, with the time
Operation, the TMP of MBR increased, and cannot obviously be played and apparent be inhibited fouling membrane.
Comparative example 3
It is water inlet, influent quality COD about 250mg/L, ammonia nitrogen about 20mg/L, total phosphorus about 4mg/L with municipal sanitary wastewater.It is whole
A technique includes mainly anoxic pond, aerobic tank, membrane module and aerator etc..Entire technique include mainly anoxic pond, aerobic tank,
Membrane module, ozone generator and aerator etc..Waste water passes through anoxic pond and aerobic tank successively, will using suction in aerobic tank
Water is discharged out of membrane module.Dissolved oxygen in anoxic pond maintains 0.3mg/L, and the dissolved oxygen in aerobic tank maintains 3mg/L, MBR's
Aperture is 0.05 μm, and membrane flux is maintained 20L/ (m2H), air aeration amount 2L/ (m2Min), ozonation aerated amount 1L/ (m2·
Min), ozone output 2kg/h, ozonation aerated time are 10s, aeration period 5min.As a result aerobic microbiological in aerobic tank
Mortality.
Claims (10)
1. a kind of method for cleaning MBR in real time in wastewater treatment process, which is characterized in that in the aerobic tank equipped with MBR, expose
Enter ozone and air, air aeration amount is 1-4L/ (m2Min), air is persistently aerated；Ozonation aerated amount is 0.05-0.4L/
(m2Min), ozone intermittent aerating, ozonation aerated 5~30s of time, ozonation aerated 2~10min of period.
2. according to the method described in claim 1, it is characterized in that, ozone is passed through mouth is arranged in around the membrane module of MBR.
3. according to the method described in claim 1, it is characterized in that, using PLC control interval it is ozonation aerated, occurred by ozone
Device obtains ozone, and the ozone output of the ozone generator is 1~5kg/h.
4. according to the method described in claim 1, it is characterized in that, the MBR uses immersion PVDF hollow fiber film assemblies.
5. method according to claim 1 or 4, which is characterized in that the membrane aperture of the MBR is 0.03~0.45 μm.
6. according to the method described in claim 5, it is characterized in that, the membrane flux of the MBR is 15~40L/ (m2·h)。
7. according to the method described in claim 1, it is characterized in that, the oxyty in the aerobic tank is more than 2mg/L.
8. method according to claim 1 or claim 7, which is characterized in that the influent quality COD of the aerobic tank is 200-
500mg/L。
9. method according to claim 1 or claim 7, which is characterized in that the ammonia-nitrogen content of the aerobic tank is 30-60mg/L,
Total phosphorus content is 3-10mg/L.
10. according to the method described in claim 1, it is characterized in that, the waste water using continuum micromeehanics successively pass through anoxic pond,
Aerobic tank；The oxyty of the anoxic pond is 0.2~0.5mg/L.
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| CN201610409520.7A CN105923754B (en) | 2016-06-13 | 2016-06-13 | A method of cleaning MBR in real time in wastewater treatment process |
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| CN201610409520.7A CN105923754B (en) | 2016-06-13 | 2016-06-13 | A method of cleaning MBR in real time in wastewater treatment process |
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| CN105923754A CN105923754A (en) | 2016-09-07 |
| CN105923754B true CN105923754B (en) | 2018-08-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430835A (en) * | 2016-11-07 | 2017-02-22 | 天津傲人环保科技有限公司 | Embedded ozone membrane bioreactor (MBR) device and embedded ozone MBR treatment method |
| CN108503019B (en) * | 2018-03-20 | 2024-05-07 | 清华大学深圳研究生院 | Membrane bioreactor and sewage treatment method |
| CN108889137B (en) * | 2018-09-06 | 2020-09-25 | 杭州近源环保科技有限公司 | MBR (membrane bioreactor) online catalytic oxidation cleaning method |
| CN111252932B (en) * | 2018-11-30 | 2022-07-05 | 广州中国科学院先进技术研究所 | Membrane absorption deamination method and system based on direct contact type micropore aeration reinforcement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361054A (en) * | 2001-06-12 | 2002-12-17 | Nkk Corp | Method for washing membrane filtration apparatus |
| CN101935138A (en) * | 2010-09-07 | 2011-01-05 | 东北电力大学 | Submerged membrane bioreactor with automatic online washing function |
| CN202070291U (en) * | 2011-05-25 | 2011-12-14 | 厦门绿邦膜技术有限公司 | Online cleaning device for ceramic membranes |
| CN102485328A (en) * | 2010-12-02 | 2012-06-06 | 东丽纤维研究所（中国）有限公司 | Cleaning method of immersion membrane filtration system |
| CN203474588U (en) * | 2013-09-04 | 2014-03-12 | 苏州市瑞华水处理工程有限公司 | Device for recycling domestic sewage |
-
2016
- 2016-06-13 CN CN201610409520.7A patent/CN105923754B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361054A (en) * | 2001-06-12 | 2002-12-17 | Nkk Corp | Method for washing membrane filtration apparatus |
| CN101935138A (en) * | 2010-09-07 | 2011-01-05 | 东北电力大学 | Submerged membrane bioreactor with automatic online washing function |
| CN102485328A (en) * | 2010-12-02 | 2012-06-06 | 东丽纤维研究所（中国）有限公司 | Cleaning method of immersion membrane filtration system |
| CN202070291U (en) * | 2011-05-25 | 2011-12-14 | 厦门绿邦膜技术有限公司 | Online cleaning device for ceramic membranes |
| CN203474588U (en) * | 2013-09-04 | 2014-03-12 | 苏州市瑞华水处理工程有限公司 | Device for recycling domestic sewage |
Non-Patent Citations (1)
| Title |
|---|
| 臭氧对膜法水处理中膜污染的影响;朱洪涛等;《环境科学》;200901;第30卷(第1期);303-312 * |
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