CN104496013B - MBR sewage treatment process - Google Patents
MBR sewage treatment process Download PDFInfo
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- CN104496013B CN104496013B CN201410805456.5A CN201410805456A CN104496013B CN 104496013 B CN104496013 B CN 104496013B CN 201410805456 A CN201410805456 A CN 201410805456A CN 104496013 B CN104496013 B CN 104496013B
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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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Abstract
The invention discloses a kind of MBR sewage treatment process, first membrane module is carried out hydrophilic process；Then membrane module is fixed in Aeration tank, adds in Aeration tank after water, activated carbon and activated sludge are mixed in proportion；Start MBR operation of sewage disposal system；Finally through cartridge filter, water is flowed to membrane module recoil.The Modern sewage treatment technology that the membrane bioreactor that the present invention provides is activated sludge process and membrance separation combines, water quality reaches country's miscellaneous water standard, can be used as flushing the toilet, carwash, greening, view and municipal water use, it is possible to as industrial colling and farming, forestry, fishing and husbandary water etc..MBR sewage disposal device is small-sized, efficient, energy-conservation, is particularly suitable for the waste water control of middle-size and small-size industrial enterprise, hotel, dining room and residential quarter.Make sewage treatment in situ, middle water direct reuse, accomplished zero-emission, substantial amounts of water resource can be saved, be the optimum selection of energy-saving and emission-reduction and sustainable development.
Description
Technical field
The present invention relates to sewage treatment area, especially relate to a kind of MBR sewage treatment process.
Background technology
Membrane biological reactor process is the relatively rapid a kind of sewage treatment process of development recently, and it mainly will
Membrane separation technique and bioreaction technology organically combine, and substantially increase system solid-liquid separation effect, thus
Making system effluent quality and volumetric loading all be greatly improved, its process form mainly has integral type film
The polytype such as bioreactor and separate film biological reactor.Due to the filtration of film, biological complete
Entirely it is trapped within bioreactor, it is achieved that being completely separated of hydraulic detention time and sludge age, makes raw
Higher MLSS is kept in thing reactor.Nitrification ability is strong, and pollutants removal rate is high.
The main method controlling fouling membrane at present has film group device aeration, Chemical cleaning and uses clear water backwash；
But membrane biological reactor process operation energy consumption in practical engineering application is high and sludge yield coefficient is high, surplus
Remaining Treatment of Sludge difficulty is big, causes wastewater treatment efficiency the best.
Existing sewage disposal system, it is therefore necessary to improved.
Summary of the invention
The deficiency existed for above-mentioned prior art, it is an object of the invention to provide a kind of MBR sewage disposal
Technique.
To achieve these goals, the technical solution adopted in the present invention is:
The object of the present invention is achieved like this:
The MBR sewage treatment process that the present invention provides, comprises the following steps:
S1: membrane module is carried out hydrophilic process；
S2: be fixed in Aeration tank by membrane module, by stable placement perpendicular at the bottom of membrane module and pond；
S3: pipe laying and valve, and be connected with blower fan and water pump；
S4: after detection MBR sewage disposal system is installed, running parameter is the most normal；
S5: add in Aeration tank after water, activated carbon and activated sludge are mixed in proportion；
S6: carry out acclimated activated sludge by sequential；
S7: start MBR operation of sewage disposal system；
S8: judge the water level of MBR water tank, when the water level of MBR water tank attains to a high place, system is normal
Work enters controlling the water circulation flow process；When the water level of MBR water tank reaches lowest order, go out water pump and stop water outlet, drum
Blower fan works on, and when going out water pump continuous anhydrous entrance in Preset Time, then aerator enters dormancy shape
State；When water tank recovers to intake to certain water level, and aerator restarts work, to peak level, water pump
Reopen water outlet；
S9: periodically start backpurge system, specific as follows: the water of recoil flows to film through cartridge filter
Assembly；The operating pressure of recoil controls in preset pressure threshold value；The recoil time is for presetting recoil time threshold.
Further, the preset pressure threshold value in described step S9 is 0 to 0.01MPa；Preset the recoil time
Threshold value is 2～5 minutes.
Further, the default recoil time threshold in described step S9 is automatically to be arranged by time controller
Control.
Further, described membrane module is carried out hydrophilic process；Specific as follows: straight after hydrophilizing agent is diluted
Connect and add from outlet；Each membrane module uses hydrophilizing agent concentrated solution about 100mL.
Further, described hydrophilizing agent is diluted to 9-11 times.
Further, after described detection MBR sewage disposal system is installed, running parameter is the most normal, specifically walks
Rapid as follows:
1) tap water is full of pond；
2) by fan starting requirement, blower fan is debugged, opens blower fan, regulate oil dripping speed and air quantity,
Whether inspection system has gas leak phenomenon；
3) opens solenoid valve, opens all flowing water Valves, and according to water outlet situation, checking that electromagnetic valve is opened is
No normally；
4) opening water pump, determine water pressure, whether inspection system has drainage；And measure from the beginning
In the case of water, system water flow under discharge pressure threshold value.
It is 4, according to claim 1, it is characterised in that: described discharge pressure threshold value is-0.03Mpa
To-0.02Mpa.
Further, also include the in-situ chemical cleaning method of MBR membrane module, specifically include following steps:
First determine whether whether the attenuation of the saturating rate of water reaches the 18-22% of initial value, if it is, by following
Step carries out situ cleaning:
1) preparation cleanout fluid, by standby after cleaning solution dilution, each membrane module adapted 200mL cleanout fluid；
2) stop aeration, stop water inlet, water level is reduced to safety level or water pump near 1.2-1.6 rice noodle
When can be automatically switched off, close outlet valve, open abluent liquid feeding valve, allow abluent under gravity
Flow into the inner chamber of membrane module；
3) after adding cleanout fluid, closing liquid feeding valve, place about 1.8-2.2 hour, then aeration is overnight；
4) open all flowing water Valves, start and water pump；Water outlet is entered in regulating reservoir, wait water outlet water
Row discharge again after matter is normal.
Use after said structure, the present invention the most advantageously:
At the Modern sewage that the membrane bioreactor that the present invention provides is activated sludge process and membrance separation combines
Reason technology.It is particularly suitable for the sewage processing COD less than 500mg/L.After process, COD can be down to 50mg/L
Hereinafter, water quality reaches country's miscellaneous water standard, can be used as flushing the toilet, carwash, greening, view and municipal administration are used
Water, it is possible to as industrial colling and farming, forestry, fishing and husbandary water etc..MBR sewage disposal device is small-sized, efficient,
Energy-conservation, it is particularly suitable for the waste water control of middle-size and small-size industrial enterprise, hotel, dining room and residential quarter.Make dirt
Water treatment in situ, middle water direct reuse, accomplish zero-emission, substantial amounts of water resource can have been saved, be energy-conservation
Reduce discharging and the optimum selection of sustainable development.
Separation film used by this device uses Polypropylene Hollow Fibrous Membranes With Microporous.Have that intensity is high, aperture is equal
The feature such as even, porosity is high, flux is big, chemical stability is good, resistance to soiling is excellent.Its surface apertures energy
Stopping that microorganism, pathogenic bacterium and mud pass through, therefore, water quality is particularly excellent.This capillary polypropylene hollow
Fibrous membrane can preserve in dry state, can use after irrigating with a small amount of reagent before using.To storage and transport band
Greatly facilitate.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings:
Fig. 1 is the MBR sewage treatment process figure of the present invention；
Fig. 2 is the MBR sewage disposal system schematic diagram of the present invention；
Fig. 3 is that the in-situ chemical of MBR membrane module cleans schematic diagram.
In figure, regulating reservoir 1, sewage pump 2, Aeration tank 3, membrane bioreactor 4, backpurge system 5,
Liquid level 6, aerator 7, centrifugal pump 8, vacuum meter 9, electromagnetic valve 10, effusion meter 11, valve 12.
Detailed description of the invention
The following stated is only presently preferred embodiments of the present invention, the most therefore limits protection scope of the present invention.
Embodiment 1, as shown in Fig. 1 to Fig. 3:
The MBR sewage treatment process that the present embodiment provides, comprises the following steps:
S1: membrane module is carried out hydrophilic process；
S2: be fixed in Aeration tank by membrane module, by stable placement perpendicular at the bottom of membrane module and pond；
S3: pipe laying and valve, and be connected with blower fan and water pump；
S4: after detection MBR sewage disposal system is installed, running parameter is the most normal；
S5: add in Aeration tank after water, activated carbon and activated sludge are mixed in proportion；
S6: carry out acclimated activated sludge by sequential；
S7: start MBR operation of sewage disposal system；
S8: judge the water level of MBR water tank, when the water level of MBR water tank attains to a high place, system is normal
Work enters controlling the water circulation flow process；When the water level of MBR water tank reaches lowest order, go out water pump and stop water outlet, drum
Blower fan works on, and when going out water pump continuous anhydrous entrance in Preset Time, then aerator enters dormancy shape
State；When water tank recovers to intake to certain water level, and aerator restarts work, to peak level, water pump
Reopen water outlet；
S9: periodically start backpurge system, specific as follows: the water of recoil flows to film through cartridge filter
Assembly；The operating pressure of recoil controls in preset pressure threshold value；The recoil time is for presetting recoil time threshold.
Preset pressure threshold value in described step S9 is 0 to 0.01MPa；Preset recoil time threshold be 2～
5 minutes.
Default recoil time threshold in described step S9 is automatically to be arranged control by time controller.
Described membrane module is carried out hydrophilic process；Specific as follows: directly from water outlet after hydrophilizing agent is diluted
Mouth adds；Each membrane module uses hydrophilizing agent concentrated solution about 100mL.
Described hydrophilizing agent is diluted to 9-11 times.
After described detection MBR sewage disposal system is installed, running parameter is the most normal, specifically comprises the following steps that
1) tap water is full of pond；
2) by fan starting requirement, blower fan is debugged, opens blower fan, regulate oil dripping speed and air quantity,
Whether inspection system has gas leak phenomenon；
3) opens solenoid valve, opens all flowing water Valves, and according to water outlet situation, checking that electromagnetic valve is opened is
No normally；
4) opening water pump, determine water pressure, whether inspection system has drainage；And measure from the beginning
In the case of water, system water flow under discharge pressure threshold value.
Described discharge pressure threshold value is-0.03Mpa to-0.02Mpa.
Also include the in-situ chemical cleaning method of MBR membrane module, specifically include following steps:
First determine whether whether the attenuation of the saturating rate of water reaches the 18-22% of initial value, if it is, by following
Step carries out situ cleaning:
1) preparation cleanout fluid, by standby after cleaning solution dilution, each membrane module adapted 200mL cleanout fluid,
It is 2000mL after dilution；
2) stop aeration, stop water inlet, water level is reduced to safety level or water pump near 1.2-1.6 rice noodle
When can be automatically switched off, close outlet valve, open abluent liquid feeding valve, allow abluent under gravity
Flow into the inner chamber of membrane module；
3) after adding cleanout fluid, closing liquid feeding valve, place about 1.8-2.2 hour, then aeration is overnight；
4) open all flowing water Valves, start and water pump；Water outlet is entered in regulating reservoir, wait water outlet water
Row discharge again after matter is normal.
The MBR sewage disposal system that the present embodiment also provides for, including grid, regulating reservoir 1, sewage lifting
Pump 2, aerating system, Aeration tank 3, overflow pipe, film bio-aeration pool, membrane bioreactor 4, recoil
System 5, middle pond and electric control box；
Described grid is arranged at regulating reservoir entrance point for removing large granular impurity；
Described sewage pump be arranged at the regulating reservoir port of export for by the sewage lifting in regulating reservoir to aeration
Pond；Described aerating system increases oxygen in Aeration tank；
Described Aeration tank upper end is provided with overflow pipe；It is biological that sewage in Aeration tank enters film through overflow pipe
Aeration tank；
Described membrane bioreactor is arranged in film bio-aeration pool, and the sewage in film bio-aeration pool is micro-
Biodegradation generates COD water up to standard, and described water up to standard is had the separating film module of a large amount of micropore again by surface
Reason；Water after process stores up with water in the microorganism isolated in described film bio-aeration pool, described middle water
Store in middle pond；Middle discharge is determined by the effusion meter 11 arranged；Also depend on before effusion meter 11
Secondary it is provided with at valve 12 and electromagnetic valve 10；It is additionally provided with between valve 12 and membrane bioreactor 4
Vacuum meter 9；The middle water in described middle pond acts on the membrane module in membrane bioreactor 4 by backpurge system；
Middle water is transported to the membrane module in membrane bioreactor 4 by centrifugal pump 8 by backpurge system.
Described electric control box respectively with sewage pump, aerating system, membrane bioreactor and recoil system
System connects.
Three lattice it are divided into for storing the pond container of sewage inside described regulating reservoir.
Described grid uses pore stainless (steel) wire to make.
Described sewage pump is placed in regulating reservoir 1；Described sewage pump 2 is provided with in hydropenia
Time can the Liquid level 6 of autostop, the Liquid level of the present embodiment uses floating-ball level switch.
Described Aeration tank includes first order Aeration tank and second level Aeration tank；The appearance of described first order Aeration tank
Long-pending length, width and height are respectively 1 meter * 1 meter * 2.5 meters；The length, width and height of the volume of the second Aeration tank are respectively 1 meter
* 1.5 meters * 2.5 meters；
Described first order Aeration tank, for storing sewage and inputting the oxygen amount required for aerobic microbiological or incite somebody to action
Sewage and activated sludge are fully contacted conjunction, thus all kinds of organic matters in decomposition water；
Described second level Aeration tank, all kinds of organic matters in further decomposition water；
Middle water in described film bio-aeration pool is to be extracted out from membrane module by suction pump；Described suction pump
For the one in centrifugal pump 8, peripheral pump or self priming pump；Described suction pump is arranged on below liquid level, described in take out
The outlet pipe of sucking pump is placed lower than the position of liquid level.
Described aerator is swinging blower fan.
The separation film of described membrane bioreactor uses Polypropylene Hollow Fibrous Membranes With Microporous；
The surface apertures of described Polypropylene Hollow Fibrous Membranes With Microporous is 0.2～0.3 μm；
Described Polypropylene Hollow Fibrous Membranes With Microporous is the film that dry state preserves；
The external diameter of described Polypropylene Hollow Fibrous Membranes With Microporous is 1.2mm；
The wall thickness of described Polypropylene Hollow Fibrous Membranes With Microporous is 0.3mm；
The tensile break strength of described Polypropylene Hollow Fibrous Membranes With Microporous is more than 2.7MPa；
The elongation at break of described Polypropylene Hollow Fibrous Membranes With Microporous is more than 85；
The pure water flux of described Polypropylene Hollow Fibrous Membranes With Microporous is more than 300-500L/h.m2/0.02MPa。
Described Polypropylene Hollow Fibrous Membranes With Microporous uses doughnut curtain to assemble.
Polypropylene Hollow Fibrous Membranes With Microporous can select the diaphragm of a height of 800-1500mm.
The MBR sewage treatment process that the present embodiment provides, comprises the following steps:
S1: membrane module is carried out hydrophilic process；It is specific as follows: after special hydrophilizing agent is diluted 10 times,
Directly add from outlet；Each membrane module uses hydrophilizing agent concentrated solution about 100mL；During perfusion permissible
See that hydrophilizing agent oozes out from fiber；
S2: be fixed in Aeration tank by membrane module, stablizes substantially vertical at the bottom of membrane module and pond, placement；
S3: pipe laying and valve, and be connected with blower fan and water pump；
S4: detecting system is installed the most correct, specific as follows:
1) tap water is full of pond；
2) by fan starting requirement, blower fan is debugged, opens blower fan, regulate oil dripping speed and air quantity,
Whether inspection system has gas leak phenomenon；
3) opens solenoid valve 10, open all flowing water Valves, according to water outlet situation, check that electromagnetic valve is opened
The most normal；
4) opening water pump, determine water pressure, whether inspection system has drainage；And measure from the beginning
In the case of water, system water flow under not higher than-0.02Mpa；
S5: start MBR and run, specific as follows:
Before startup, should add in every L water in the ratio addition Aeration tank of 5g activated carbon and 5g activated sludge；
Then acclimated activated sludge is carried out by sequential (aerator leaves 3 hours, closes 1 hour)；The domestication time is two weeks left sides
Right (depending on temperature, one week can be as short as summer, winter, president was to January)；After the domestication stage completes, Ji Kezheng
Often run；
In the machine running；When the water level of MBR water tank attains to a high place, aerator and to go out water pump normal
Work；System enters normal controlling the water circulation flow process；When the water level of MBR water tank reaches lowest order, go out water pump and stop
Only work, system stops water outlet；Aerator 7 works on；Such as anhydrous entrance in continuous 2 hours, air blast
Machine enters resting state, works per hour 5 minutes, stops 55 minutes；When water tank recovers water inlet to certain water
Position, aerator restarts work, and to peak level, water pump reopens water outlet；
Native system uses the technique that periodically recoils, and to ensure the useful life of film, reduces the pollution of film；Recoil
Water could need to use through cartridge filter；The filter element of cartridge filter need to be made regular check on and change；
The operating pressure of recoil should control within 0.1MPa；The recoil time is usually set to 2～5 minutes；?
It is observed that the back-flushing flow of the system of entrance can be continuously increased in back flushing process；Show the pollution feelings of film
Condition makes moderate progress；Recoil is automatically arranged control by time controller；
Operation process condition:
Properly functioning operating pressure is :-0.02MPa, when discharge pressure leads to higher than-0.02MPa, water
Amount, less than the 20% of design load, i.e. needs stop cleaning.
It is 8-12g/L (10g/L) that the machine controls the sludge concentration in MBR pond；Conventional method is to check dirt
30 minutes settling volumes of mud；Water containing mud is placed in the graduated cylinder of a 1000mL, stands 30
The height of mud is measured after minute；It is normal at 50%～80%；As sludge concentration is too high, consider to fit
Work as blowdown；Generally to measure once weekly；
Discharge pressure is controlled at below-0.02MPa, the highest less than-0.02MPa；As pressure is higher than
-0.0MPa, flux less than the 20% of design load, then answers stop cleaning.
The in-situ chemical cleaning method of the MBR membrane module that the present embodiment provides, comprises the following steps:
First determine whether whether the attenuation of the saturating rate of water reaches the 20% of initial value, if it is, by following step
Suddenly situ cleaning is carried out:
1) preparation cleanout fluid, standby after special cleaning is diluted 10 times, each membrane module adapted 200mL
Cleanout fluid, is 2000mL after dilution；
2) stop aeration, stop water inlet, water level is reduced to safety level or water pump meeting near 1.5 rice noodles
When being automatically switched off, close outlet valve, open abluent liquid feeding valve, allow abluent flow under gravity
Enter the inner chamber of membrane module；
3) after adding cleanout fluid, closing liquid feeding valve, place about 2 hours, then aeration is overnight；
4) open all flowing water Valves, start and water pump；Water outlet is entered in regulating reservoir, wait water outlet water
Row discharge again after matter is normal.
In order to prevent algae and bacterial growth, middle pond should periodically be thrown in a small amount of medicament.
Regulating reservoir i.e. anaerobic tank, is used for storing sewage, makes sewage uniform component；
The capacity of regulating reservoir typically should be greater than 1/3 of the day output equal to sewage；
Regulating reservoir is equipped with grid, to prevent large-sized solid impurity from entering in pond；
Regulating reservoir capacity is long * width * height=2*3*2 (m), can store sewage 10m3Left and right；
Three lattice are made inside regulating reservoir；
Sewage pump is placed in regulating reservoir；
Sewage pump carries floating-ball level switch, can autostop when hydropenia；
The start-stop of sewage pump is controlled by the liquid-level switch in Aeration tank；
Aeration tank is made up of fiberglass or steel concrete；
The volume of Aeration tank is 1*1*2.5, and the volume of the second Aeration tank is 1*1.5*2.5；Total measurement (volume) is 6M3；
Sewage is the actual time of staying about 10 hours in biochemistry pool；
Left side source of sewage, left side kind Rhizoma Seu Herba Bergeniae calabash, absorbed nitrogen phosphorus, anaerobism (nitrifier), interposition 150
Drainage screen, the right are that software blocks oil barrier, oxygen consumption effect.
Embodiment 2
The membrane Bio-reactor Technology that the present embodiment provides is the modern times that activated sludge process combines with membrance separation
Technology of waste water control, has that efficiency is high, effluent quality is good and the feature such as anti impulsion load, accordingly, it is capable to
Ensure that effluent quality reaches country's I level water discharge standard.
This process unit is as shown in Figure 2.This apparatus main body structure is made up of three parts, i.e. anaerobic tank, holds concurrently
Oxygen reaction tank and Aerobic Pond (including membrane bioreactor).Toilet wastewater is introduced into anaerobic tank, by feces etc.
Solid pollutant separates.Liquid sewage, after grid removes solid sundries further, pumps into double with elevator pump
Oxygen pond.The effect of oxygen compatibility pool is to cooperate with aerobic process and completes the nitration denitrification of nitrogen, to remove in sewage
Ammonia-nitrogen.Oxygen compatibility pool is connected with membrane bioreactor, is injected in MBR pond by top overflow.In this pond
In, sewage is decomposed by aerobic microbiological, makes COD drop to below 50mg/L.Water in the high-quality generated
Separating with mud through membrane separation assemblies, transport pump is to asking pond by centrifugation.For preventing antibacterial and microorganism raw
Long, clear water reserviors need to periodically be quantitatively adding disinfectant.Part clear water can Reusability, be used for flushing the toilet,
Greening etc..Unnecessary water can directly discharge.In order to remove the ammonia nitrogen in sewage, the foul water fraction of Aerobic Pond
Overflow, in cesspool, is reinjected in oxygen compatibility pool by elevator pump, completes the denitrification of ammoniacal nitrogen.Through above-mentioned
Technological process, it is ensured that effluent quality reaches country's miscellaneous water and first discharge standard.
According to design, the actual floor space of this apparatus main body structure is 11m2, wherein anaerobic tank is buried
Structure, the gross area is 6m2, hold concurrently oxygen and aerobic employing half superstructure, height overall 3m.The design of Aerobic Pond
Volume is 5M3, and design dwell time of sewage is about 12 hours, power consumption about 1KWh per hour.
MBR sewage disposal system is widely used at present, and other structure and principle are same as the prior art,
Here repeat no more.
Claims (4)
1.MBR sewage treatment process, it is characterised in that: comprise the following steps:
S1: membrane module is carried out hydrophilic process；
S2: be fixed in Aeration tank by membrane module, by stable placement perpendicular at the bottom of membrane module and pond；
S3: pipe laying and valve, and be connected with blower fan and water pump；
S4: after detection MBR sewage disposal system is installed, running parameter is the most normal；
S5: add in Aeration tank after water, activated carbon and activated sludge are mixed in proportion；
S6: carry out acclimated activated sludge by sequential；
S7: start MBR operation of sewage disposal system；
S8: judge the water level of MBR water tank, when the water level of MBR water tank reaches highest order, system worked well enters controlling the water circulation flow process；When the water level of MBR water tank reaches lowest order, going out water pump and stop water outlet, aerator works on, and when going out water pump continuous anhydrous entrance in Preset Time, then aerator enters resting state；When MBR water tank recovers to intake to certain water level, and aerator restarts work, to highest order, goes out water pump and reopens water outlet；
S9: periodically start backpurge system, specific as follows: the water of recoil flows to membrane module through cartridge filter；The operating pressure of recoil controls in preset pressure threshold value；The recoil time is for presetting recoil time threshold；
Described membrane module uses Polypropylene Hollow Fibrous Membranes With Microporous；
Preset pressure threshold value in described step S9 is 0 to 0.01MPa；Presetting recoil time threshold is 2～5 minutes；
Default recoil time threshold in described step S9 is automatically to be arranged control by time controller；
Described membrane module is carried out hydrophilic process；Specific as follows: directly to add from outlet after hydrophilizing agent is diluted；Each membrane module uses hydrophilizing agent concentrated solution 100mL；
Also include the in-situ chemical cleaning method of MBR membrane module, specifically include following steps:
First determine whether whether the attenuation of the saturating rate of water reaches the 18-22% of initial value, if it is, carry out situ cleaning according to the following steps:
1) preparation cleanout fluid, by standby after cleaning solution dilution, each membrane module adapted 200mL cleanout fluid；
2) stop aeration, stop water inlet, water level be reduced to 1.2-1.6 rice noodle safety level or go out water pump when can be automatically switched off, closing outlet valve, open cleanout fluid liquid feeding valve, allow cleanout fluid flow under the influence of gravity into the inner chamber of membrane module；
3) after adding cleanout fluid, closing liquid feeding valve, place 1.8-2.2 hour, then aeration is overnight；
4) open all flowing water Valves, start and water pump；Water outlet is entered in regulating reservoir, row discharge again after waiting effluent quality is normal.
MBR sewage treatment process the most according to claim 1, it is characterised in that: described hydrophilizing agent is diluted to 9-11 times.
MBR sewage treatment process the most according to claim 1, it is characterised in that: after described detection MBR sewage disposal system is installed, running parameter is the most normal, specifically comprises the following steps that
1) tap water is full of pond；
2) debugging blower fan by fan starting requirement, open blower fan, regulation oil dripping speed and air quantity, whether inspection system has gas leak phenomenon；
3) opens solenoid valve, opens all flowing water Valves, according to water outlet situation, checks that electromagnetic valve is opened the most normal；
4) opening out water pump, determine water pressure, whether inspection system has drainage；And measure in the case of tap water, system water flow under discharge pressure threshold value.
MBR sewage treatment process the most according to claim 3, it is characterised in that: described discharge pressure threshold value is-0.03Mpa to-0.02Mpa.
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| CN109179869A (en) * | 2018-09-19 | 2019-01-11 | 梁善武 | The sewage treatment process and autocontrol operation method of no additional carbon removal total nitrogen |
| CN114516693B (en) * | 2022-03-03 | 2022-12-16 | 哈尔滨工业大学 | No-cleaning sewage recycling device based on ultra-low pressure driving and method for treating secondary effluent by using same |
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| CN2405929Y (en) * | 1998-10-14 | 2000-11-15 | 同济大学 | Integrated membrane biological reaction apparatus |
| US7118674B2 (en) * | 2004-10-14 | 2006-10-10 | Itt Manufacturing Enterprises, Inc. | Energy-efficient biological treatment with membrane filtration |
| CN201520702U (en) * | 2009-09-24 | 2010-07-07 | 李强 | Intelligent MBR engineering module waste water processing device |
| CN201704167U (en) * | 2010-04-06 | 2011-01-12 | 浙江云洲科技有限公司 | System for recovering and processing fecal sewage from train |
| CN102580544B (en) * | 2011-12-29 | 2015-02-18 | 北京清大国华环保科技有限公司 | High-flux contamination-resisting type flat membrane bioreactor and flat MBR (Membrane Bioreactor) device |
| CN102701434B (en) * | 2012-07-10 | 2013-08-28 | 哈尔滨工业大学 | Combined self-control membrane bioreactor and method for treating low-temperature low-turbidity high-chroma high-ammonia nitrogen source water using same |
| CN103214147A (en) * | 2013-04-16 | 2013-07-24 | 北京航空航天大学 | Oil-refining wastewater treatment method and device |
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