CN103435232A - AABR (Anaerobic Baffled Reactor)-compound type MBR (Membrane Biological Reactor) integrated device and method for treating organic wastewater - Google Patents
AABR (Anaerobic Baffled Reactor)-compound type MBR (Membrane Biological Reactor) integrated device and method for treating organic wastewater Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000002351 wastewater Substances 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 238000006243 chemical reaction Methods 0.000 claims abstract description 87
- 239000000945 filler Substances 0.000 claims abstract description 37
- 238000005273 aeration Methods 0.000 claims description 21
- 239000010815 organic waste Substances 0.000 claims description 19
- 239000010802 sludge Substances 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 4
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- 239000000047 product Substances 0.000 claims description 4
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- 238000004519 manufacturing process Methods 0.000 abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 4
- 239000011574 phosphorus Substances 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 4
- 229910052757 nitrogen Inorganic materials 0.000 abstract 2
- 239000010865 sewage Substances 0.000 description 9
- 239000011259 mixed solution Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
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Abstract
The invention discloses an AABR (Anaerobic Baffled Reactor)-compound type MBR (Membrane Biological Reactor) integrated device and a method for treating organic wastewater. In order to realize standard-reaching treatment of organic wastewater with middle and high concentrations, the integrated device comprises a compound type MBR reaction tank provided with fillers and an MBR membrane assembly; the water outlet end of the compound type MBR reaction tank is communicated with a water production tank; the water inlet side of the compound type MBR reaction tank is provided with an AABR reaction tank communicated with a water inlet pipe; the AABR reaction tank comprises an anoxic section and multi-grade anaerobic tanks; the anoxic section and the multi-grade anaerobic tanks are internally provided with vertically-arranged baffle plates; the mud outlet end of the compound type MBR reaction tank is communicated with the anoxic section and a first-grade anaerobic tank respectively; the water inlet pipe is communicated with the anoxic section and the first-grade anaerobic tank in the multi-grade anaerobic tanks of the AABR reaction tank respectively. According to the AABR-compound type MBR integrated device, an ABR (Aerobic Baffled Reactor) is improved into an AABR and a form of a reversed A/A/O (Anaerobic/Anoxic/Oxic) nitrogen and phosphorus removal process is composed of the AABR and the compound type MBR reaction tank, so that organic matters with the middle and high concentrations are degraded and the nitrogen and phosphorus removal is also realized.
Description
Technical field
The present invention relates to technical field of sewage, relate in particular to a kind of " AABR-combined type MBR " integrated apparatus and method of wastewater treatment of processing organic waste water.
Background technology
The built-in vertical flow deflector of ABR reactor, be separated into reactor several reaction chambers of series connection, and each reaction chamber is a relatively independent upflow sludge blanket (UASB) system.Although can be regarded as the simple series connection of a plurality of UASB at textural ABR, on technique, from single UASB, have differently significantly, ABR is closer to pulling flow type technique.Can inoculate and culture out in each reaction chamber and flow to the sewage quality in this reaction chamber, the microflora that envrionment conditions adapts, thereby causing anaerobic reaction to produce acid is separated along journey with methanogenic phase mutually, be conducive to give full play to the activity of anaerobic bacteria flora, improve the treatment effect of system and the stability of operation.
With respect to other anaerobic reactors, ABR has the structure simplicity of design, does not need expensive water inlet system and Gas-solid-liquid separater, and starts easily, can be in different condition and the different advantages such as granule sludge of formation performance in compartment.Therefore, the less investment of ABR method, working cost is lower.
The MBR membrane bioreactor is that activated sludge process and membrane separation technique are combined, and replaces the sewage disposal novel method of second pond in traditional conventional activated sludge method with membrane separation technique.Have benefited from the high rejection of film, make in bio-reactor the sludge concentration that remains higher, the organic pollutant content of water outlet is dropped to minimum, can effectively remove ammonia nitrogen, also very effective to the trade effluent of difficult degradation.In addition, also have can obtain high quality water quality treatment, floor space little, be easy to install many advantages such as operation is convenient.
The MBR membrane bioreactor can be divided into separated type, integral type (immersion) and combined type according to the process form classification.Wherein combined type MBR also belongs to integral type MBR in form, difference is to install filler and membrane module in the membrane biological reaction pond additional simultaneously, thereby formation combined film bioreactor, the increase of filler has changed the proterties of membrane bioreactor part mud on the one hand, improved the removal efficiency to organic pollutant, can play pre-filtered effect to the MBR membrane module on the other hand, the decelerating membrane pollution degree.
The common feature of ABR reactor and membrane bioreactor (MBR) is that sludge retention time (SRT) separates fully with hydraulic detention time (HRT), reactor volume is dwindled greatly, processing power improves greatly, is a kind of rising energy-saving bioreaction technology.But, due to the characteristics of ABR reactor and membrane bioreactor (MBR) self, for the effluent quality after the treatment of Organic Wastewater of middle and high concentration, do not reach " urban sewage reutilization city miscellaneous water water quality " (GB/T18920-2002) and " integrated wastewater discharge standard " (GB 8,978 1996) secondary standard.
Summary of the invention
In order to realize the processing up to standard of centering high concentrated organic wastewater, the present invention aims to provide a kind of AABR that processes organic waste water-combined type MBR integrated apparatus, this device improves ABR to form anoxic-anaerobic baffled reaction tank (AABR), formed again the form of inversion A/A/O denitrification dephosphorization technique by anoxic-anaerobic baffled reaction tank (AABR) and combined type MBR reaction tank, in the degraded organic while of middle and high concentration, realize denitrogenation dephosphorizing.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of AABR that processes organic waste water-combined type MBR integrated apparatus, comprise combined type MBR reaction tank; Be provided with the filler that is positioned at feed-water end and the MBR membrane module that is positioned at the filler rear side in described combined type MBR reaction tank; The water side of described combined type MBR reaction tank and one is produced pond and is communicated with; Its constructional feature is; The influent side of described combined type MBR reaction tank is provided with the AABR reaction tank be communicated with water inlet pipe, this AABR reaction tank comprises anoxic section and the anoxic section be in series by the multistage anaerobic pond be communicated with the water side of anoxic section, and the last step anaerobic pond in the multistage anaerobic pond is communicated with described combined type MBR reaction tank; Be equipped with the traverse baffle of vertical layout in described anoxic section and anaerobic pond; The mud outlet end of described combined type MBR reaction tank is communicated with the first step anaerobic pond in described anoxic section and multistage anaerobic pond respectively by mud/mixed-liquor return pump, pipeline and valve; Described water inlet pipe is communicated with the anoxic section of described AABR reaction tank and the first step anaerobic pond in the multistage anaerobic pond respectively.
Described inversion A/A/O technique is the sewage treatment process of the branch water inlet that grows up on conventional A/A/O technique basis, by anoxic pond being placed in to the anaerobic pond front, avoided in traditional A/A/O treatment process system, in backflow mixed liquor and returned sluge, a large amount of nitrate has a liking on anaerobic pond the impact that the phosphorus bacterium is put the phosphorus process.
Be below the technical scheme of further improvement of the present invention:
For sewage is fully mixed with mixed solution, Aerobic Pond returned sluge/mixed solution in the anoxic section, be provided with agitator in described anoxic section, preferably be arranged on the bottom of anoxic section.
Described filler is elastic filler, and the below of this elastic filler is provided with the elastic filler district aeration tube that is positioned at combined type MBR reaction tank bottom; Described MBR membrane module below is provided with the MBR district aeration tube that is positioned at combined type MBR reaction tank bottom; Described elastic filler district aeration tube is connected with the MBR district aeration tube gas blower outer with being arranged on combined type MBR reaction tank.Thus, described MBR membrane module bottom and elastic filler bottom configure respectively independent aerating pipelines, the MBR membrane module bottom is carried out aeration, prevent active sludge to be attached in a large number the film surface and make water production rate decline too fast, MBR membrane module bottom aerating pipelines is except slowing down the MBR film pollutes, and is partly dissolved oxygen for the aerobic reaction in front end elastic filler district provides.Front end elastic filler district arranges separately aerating pipelines, by the start and stop of automatic dissolved oxygen instrument control aerating apparatus processed.
Filter screen and valve are housed on described water inlet pipe, thus, adopt the mode of multipoint water feeding, by automatic regulating valve door and flow sensor, automatically regulate the water yield that enters anoxic section and anaerobism section.Install and be not more than 30 purpose filter screens on water inlet pipe, prevent in the large granular impurity access to plant, submersible agitator is installed in anoxic section bottom.Combined type MBR reaction tank front end is installed elastic filler, and rear end is furnished with the MBR membrane module.
According to embodiments of the invention, described AABR reaction tank comprises an anoxic section and the two-stage anaerobic pond be communicated with the water side of anoxic section.
Described MBR membrane module is curtain formula hollow fiber film assembly.
Be provided with blow-down pipe on described anoxic section and MBR reaction tank; Described multistage anaerobic is provided with the collecting methane pipe on pond.
Further, the present invention also provides a kind of method that AABR-combined type MBR integrated apparatus is processed organic waste water of utilizing above-mentioned processing organic waste water, comprises the steps:
1) organic waste water enters respectively in the first step anaerobism section in anoxic section and multistage anaerobic section through water inlet pipe, in the anoxic section of dissolved oxygen≤0.5mg/L, processes 4h-8h, in the anaerobism section, processes 12h ~ 24h;
2) waste water after anoxic, anaerobic treatment enters in the MBR reaction tank, after processing 15h ~ 20h in the MBR reaction tank that is 2mg/L-4mg/L at dissolved oxygen, supernatant liquor drains into and produces pond, mud/mixed-liquor return is to the first step anaerobic pond in anoxic section and multistage anaerobic pond, and sludge age is 8d-20d.
Described MBR membrane module adopts continuous aeration, the mode of water outlet intermittently, by the MBR reaction tank to the time of producing pool water-pumping and stopping producing pool water-pumping than being (7min-9min): (1.5min-2.5min); In described MBR reaction tank, filler bottom gas-water ratio is 3-5:1, and MBR membrane module bottom gas-water ratio is 16-20:1.
Below take the AABR reaction tank with two-stage anaerobic section the present invention will be further explained as example:
The present invention forms successively three compartments of series connection by the AABR reaction tank in water (flow) direction by upper and lower traverse baffle is set, first compartment forms anaerobic environment by submersible agitator, second and third compartment is the anaerobism section, forms thus anoxic-anaerobic baffled reaction tank (AABR).Adopt the mode of multipoint water feeding, control the water yield that enters anoxic section and anaerobism section by valve; Then waste water advances along the upper and lower baffling of flow deflector, enters the anaerobism section, and microbial population is realized producing separating of acid and methanogenic phase along the different compartments of water (flow) direction, reaches two-phase or multiphase operation in single reactor.Waste water through anaerobic reaction enters combined type MBR reaction tank by the gravity flow of AABR reaction tank, and front end hangs elastic filler, carries out the part nitration reaction when removing COD, and can tackle the macrobead suspended substance, alleviates follow-up MBR film and pollutes; Rear end is MBR film reaction district, mainly carries out nitration reaction and further removes COD.Obtain producing water by the vacuum primingpump suction and flow into the product pond.Combined type MBR reaction tank is furnished with mud/mixed-liquor return system, can distribute the mud that enters oxygen-starved area and anaerobic zone/mixing liquid measure, thereby reaches the purpose of denitrogenation dephosphorizing.
The present invention forms successively three compartments of series connection by reaction tank in water (flow) direction by upper and lower traverse baffle, and first compartment forms anaerobic environment by submersible agitator, and second and third compartment is the anaerobism section, forms thus anoxic-anaerobic baffled reaction tank (AABR).Anoxic section top arranges blow-down pipe, and anaerobism section top is firedamp drainage and collection tube.
The present invention consists of the form of inversion A/A/O denitrification dephosphorization technique anoxic-anaerobic baffled reaction tank (AABR) and combined type MBR reaction tank, in the degraded organic while of middle and high concentration, realized denitrogenation dephosphorizing.
The present invention merges into a mud/mixed-liquor return pipe according to the characteristics of inversion A/A/O technique by mud and mixed-liquor return, mud/the mixed solution of mud/mixed-liquor return pump discharge can enter anaerobic zone by the anaerobic zone arm that refluxes, also can enter oxygen-starved area by the oxygen-starved area arm that refluxes, flow sensor and automatic regulating valve door are housed on every arm, can automatically distribute the flow that enters anaerobic zone and oxygen-starved area mud/mixed solution.
The water inlet of each step of the present invention, filtration, backwash, aeration, sludge reflux are all two kinds of control mode operations of automatic/hand.Emptying, spoil disposal is manually to control.
The present invention also has except all advantages that possesses conventional ABR and combined type MBR combination process:
(1) by improving, formed the form of inversion A/A/O denitrification dephosphorization technique by anoxic-anaerobic baffled reaction tank (AABR) and combined type MBR reaction tank, in the degraded organic while of middle and high concentration, reach the purpose of denitrogenation dephosphorizing;
(2) mud return line and mixed-liquor return pipe are merged into to a reflux line, bottom, membrane biological reaction district configures separately aerating pipelines with the elastic filler bottom, and optimizes aeration rate by the mode of variable frequency adjustment rotation speed of fan, thereby has reduced energy consumption.
Compared with prior art, the invention has the beneficial effects as follows: the present invention adopts the mode of multipoint water feeding, by valve, automatically controls the water yield that enters anoxic section and anaerobism section.The anoxic section is furnished with submersible agitator, and sewage is fully mixed with mixed solution, Aerobic Pond returned sluge/mixed solution in the anoxic section; Then waste water advances along the upper and lower baffling of flow deflector, enters the anaerobism section, and microbial population is realized producing separating of acid and methanogenic phase along the different compartments of water (flow) direction, reaches two-phase or multiphase operation in single reactor.Waste water through anaerobic reaction enters combined type MBR reaction tank by the gravity flow of AABR reaction tank, and front end hangs elastic filler, carries out the part nitration reaction when removing COD, and can tackle the macrobead suspended substance, alleviates follow-up MBR film and pollutes; Rear end is MBR film reaction district, mainly carries out nitration reaction and further removes COD.Obtain producing water by the vacuum primingpump suction and flow into the product pond.The MBR membrane module bottom is carried out aeration, prevents that active sludge is attached on film surface and water production rate is descended too fast in a large number, and is partly dissolved oxygen for the aerobic reaction in front end elastic filler district provides.Front end elastic filler district arranges separately aerating pipelines, controls the start and stop of aerating apparatus by automatic dissolved oxygen instrument and valve.Combined type MBR reaction tank is furnished with mud/mixed-liquor return system, can distribute the mud that enters oxygen-starved area and anaerobic zone/mixing liquid measure, thereby reaches the purpose of denitrogenation dephosphorizing.
The present invention is particularly useful for processing the organic waste water of middle and high concentration.
Below in conjunction with drawings and Examples, the present invention is further elaborated.
The accompanying drawing explanation
Fig. 1 is the structure principle chart of one embodiment of the invention.
In the drawings
The 1-water inlet pipe, the 2-filter screen, 3-anoxic section water inlet pipe, 4-anaerobism section water inlet pipe, 5-anoxic section, the 6-submersible agitator, 7, the 8-anaerobism, 9-combined type MBR reaction tank, the 10-elastic filler, the 11-MBR membrane module, the 12-water producing pipe, 13-produces water pump, the 14-backwashing pump, 15-backwash pipe, 16-mud/mixed-liquor return pump, the 17-shore pipe, 18-anaerobic zone mud/mixed-liquor return pipe, 19-oxygen-starved area mud/mixed-liquor return pipe, the 20-gas blower, 21-elastic filler district aeration tube, 22-MBR district aeration tube, 23-produces pond, 24-oxygen-starved area blow-down pipe, 25-anaerobic zone collecting methane pipe, 26-aerobic zone blow-down pipe.
Embodiment
A kind of AABR that processes middle and high concentration organic waste water-combined type MBR integrated apparatus, as shown in Figure 1, adopt the mode of multipoint water feeding, by the automatic valve on anoxic section water inlet pipe 3 and anaerobism section water inlet pipe 4 and flow sensor, control the water yield that enters anoxic section 5 and anaerobism section 7.The anoxic section is furnished with submersible agitator 6, and sewage is fully mixed with mixed solution, Aerobic Pond returned sluge/mixed solution in the anoxic section; Then waste water advances along the upper and lower baffling of flow deflector, gravity flow enters anaerobism section 7,8, combined type MBR reaction tank 9 successively, and combined type MBR reaction tank 9 front ends hang elastic filler 10, carry out the part nitration reaction when removing COD, and can tackle the macrobead suspended substance, alleviate follow-up MBR film and pollute; Rear end, for being furnished with MBR membrane module 11, mainly being carried out nitration reaction and is further removed COD.Obtain producing water by vacuum primingpump 13 suctions and flow into product pond 23.Aeration 22 is carried out in MBR membrane module 11 bottoms, prevents that active sludge is attached on film surface and water production rate is descended too fast in a large number, and is partly dissolved oxygen for the aerobic reaction in front end elastic filler district provides.Front end elastic filler district arranges separately aerating pipelines 21, by the start and stop of automatic dissolved oxygen instrument control aerating apparatus processed.Combined type MBR reaction tank 9 is furnished with mud/mixed-liquor return system, can automatically distribute the mud that enters oxygen-starved area 5 and anaerobic zone 7/mixing liquid measure, thereby reaches the purpose of denitrogenation dephosphorizing.
The sludge concentration that combined type MBR reaction tank 9 is higher not only wins the nitrated needed reaction volume of Aerobic Pond from fixing biochemical reaction pool volume, and the anoxic microenvironment of active sludge flco inside makes the nitrification and denitrification process just synchronously carry out in the period at aeration, thereby created condition for the nitric efficiency of further raising system.
Example one, the processing water yield: certain Wastewater in Biologic Pharmacy 200m
3/ d.
Influent quality: COD:2000 ~ 2700mg/L, BOD:500 ~ 700mg/L, NH
3-N:130 ~ 160mg/L, TP:4 ~ 6mg/L, SS :≤200mg/L.
Design variable: the AABR reaction tank divides three compartments, and the first compartment is the anoxic section, and second and third compartment is the anaerobism section.Each compartment volume is identical, upper and lowerly to stream chamber width ratio, is decided to be 1:4, and the traverse baffle knuckle is 45 °.Anoxic section residence time 6h, anaerobism section residence time 12h, combined type MBR reaction tank residence time 16h.
Lectotype selection: submersible agitating acc power 0.3KW, the MBR membrane module adopts curtain formula hollow fiber film assembly, model FP-A IV, the elastic filler specification: 200 * 1500, blower power: 3kw, mud/mixed-liquor return pump horsepower 2.2kw, produce pump power 3kw, backwashing pump power 1.5kw.
Operational conditions: take out and stop than 8min/2min, backwash cycle 1 time/10min, backwash time 30 ~ 60s.Anoxic section dissolved oxygen≤0.5mg/L, elastic filler bottom gas-water ratio 4:1, dissolved oxygen 2 ~ 4mg/L, MBR membrane module bottom gas-water ratio 18:1, mud/return current ratio of the mixed liquid 200 ~ 300%, sludge age 8 ~ 20d.
Effluent quality: COD≤40mg/L, BOD≤20mg/L, NH3-N≤20mg/L, TP≤1mg/L, SS≤10mg/L.Effluent quality reaches " urban sewage reutilization city miscellaneous water water quality " (GB/T18920-2002) standard.
Power consumption: the power consumption of processing one ton of water is about 0.97kw.h/m
3.
Example two, the processing water yield: certain beet sugar manufacture waste water 1000m
3/ d.
Influent quality: COD:5000 ~ 6000mg/L, BOD:2000 ~ 2800mg/L, NH
3-N :≤50mg/L, SO
4 2-: 350 ~ 600mg/L, SS:1000 ~ 4000mg/L.
Design variable: the AABR reaction tank divides three compartments, and the first compartment is the anoxic section, and second and third compartment is the anaerobism section.Each compartment volume is identical, upper and lowerly to stream chamber width ratio, is decided to be 1:4, and the traverse baffle knuckle is 45 °.Anoxic section residence time 6h, anaerobism section residence time 24h, combined type MBR reaction tank residence time 20h.
Lectotype selection: submersible agitating acc power 1.5KW, the MBR membrane module adopts curtain formula hollow fiber film assembly, model FP-A IV, the elastic filler specification: 200 * 1500, blower power: 15kw, mud/mixed-liquor return pump horsepower 4kw, produce pump power 12kw, backwashing pump power 5.5kw.
Operational conditions: take out and stop than 8min/2min, backwash cycle 1 time/10min, backwash time 30 ~ 60s.Anoxic section dissolved oxygen≤0.5mg/L, elastic filler bottom gas-water ratio 4:1, dissolved oxygen 2 ~ 4mg/L, MBR membrane module bottom gas-water ratio 18:1, mud/return current ratio of the mixed liquid 100 ~ 200%, sludge age 8 ~ 20d.
Effluent quality: COD≤200mg/L, BOD≤100mg/L, NH-N≤20mg/L, SO
4 2-≤ 50mg/L, SS≤50mg/L.Effluent quality reaches " integrated wastewater discharge standard " (GB 8,978 1996) secondary standard.
Power consumption: the power consumption of processing one ton of water is about 0.75kw.h/m
3.
Automatically control explanation: equipment running process comprise into water, filtration, filtration stop, backwash, standby.In operational process, except emptying, spoil disposal and MBR membrane module system, flooding to clean needs outside manual intervention, and other can move automatically, but also manual operation operation.Operation interface adopts touch-screen.
The MBR membrane filtration adopts continuous aeration, and intermittently the mode of water outlet, take out and stop than 8min/2min, and flow sensor and autocontrol valve are installed in the water producing pipe road, realizes that constant flow filters.Carry out automatic clear water backwash while stopping water outlet, backwash time 30 ~ 60s.
Guarantee water producing pipe pressure<50kpa, otherwise the water producing pipe automatic valve is closed, whether artificial decision carries out online medicament backwash.
Gas blower is variable frequency control, can suitably reduce or increase aeration rate according to the variation of dissolved oxygen, but aeration rate can not be 0.When stopping, blower fan can cause closing of water producing pipe automatic valve.
The content that above-described embodiment is illustrated should be understood to these embodiment only for being illustrated more clearly in the present invention, and be not used in, limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
Claims (9)
1. the AABR that processes organic waste water-combined type MBR integrated apparatus, comprise combined type MBR reaction tank (9); Be provided with the filler (10) that is positioned at feed-water end in described combined type MBR reaction tank (9) and be positioned at the MBR membrane module (11) of filler (10) rear side; The water side of described combined type MBR reaction tank (9) and one is produced pond (23) and is communicated with; It is characterized in that; The influent side of described combined type MBR reaction tank (9) is provided with the AABR reaction tank be communicated with water inlet pipe (1), this AABR reaction tank comprise anoxic section (5) and with the water side of anoxic section (5), be communicated with by multistage anaerobic pond (7,8) the anoxic section be in series, last step anaerobic pond (8) in multistage anaerobic pond (7,8) is communicated with described combined type MBR reaction tank (9); Be equipped with the traverse baffle of vertical layout in described anoxic section (5) and anaerobic pond (7,8); The mud outlet end of described combined type MBR reaction tank (9) by mud/mixed-liquor return pump (16), pipeline and valve respectively with described anoxic section (5) and multistage anaerobic pond (7,8) in first step anaerobic pond (7) connection; Described water inlet pipe (1) is communicated with anoxic section (5) and the first step anaerobic pond (7) in multistage anaerobic pond (7,8) of described AABR reaction tank respectively.
2. the AABR of processing organic waste water according to claim 1-combined type MBR integrated apparatus, is characterized in that, is provided with agitator (6) in described anoxic section (5).
3. the AABR of processing organic waste water according to claim 1-combined type MBR integrated apparatus, it is characterized in that, described filler (10) is elastic filler, and the below of this elastic filler is provided with the elastic filler district aeration tube (21) that is positioned at combined type MBR reaction tank (9) bottom; Described MBR membrane module (11) below is provided with the MBR district aeration tube (22) that is positioned at combined type MBR reaction tank (9) bottom; Described elastic filler district aeration tube (21) is connected with MBR district aeration tube (22) gas blower (20) outer with being arranged on combined type MBR reaction tank (9).
4. the AABR of processing organic waste water according to claim 1-combined type MBR integrated apparatus, is characterized in that, filter screen (2) and valve are housed on described water inlet pipe (1).
5. according to the AABR of the described processing organic waste water of one of claim 1 ~ 4-combined type MBR integrated apparatus, it is characterized in that, described AABR reaction tank comprises an anoxic section (5) and the two-stage anaerobic pond (7,8) be communicated with the water side of anoxic section (5).
6. according to the AABR of the described processing organic waste water of one of claim 1 ~ 4-combined type MBR integrated apparatus, it is characterized in that, described MBR membrane module (11) is curtain formula hollow fiber film assembly.
7. according to the AABR of the described processing organic waste water of one of claim 1 ~ 4-combined type MBR integrated apparatus, it is characterized in that, on described anoxic section (5) and MBR reaction tank (9), be provided with blow-down pipe; Be provided with collecting methane pipe (25) on described multistage anaerobic pond (7,8).
8. the method that AABR-combined type MBR integrated apparatus is processed organic waste water of utilizing the described processing organic waste water of one of claim 1-7, is characterized in that, comprises the steps:
1) organic waste water enters respectively anoxic section (5) and multistage anaerobic section (7 through water inlet pipe (1), 8) in the first step anaerobism section (7) in, process 4h-8h in the anoxic section (5) of dissolved oxygen≤0.5mg/L, process 12h ~ 24h in anaerobism section (7,8);
2) waste water after anoxic, anaerobic treatment enters in MBR reaction tank (9), after processing 15h ~ 20h in the MBR reaction tank that is 2mg/L-4mg/L at dissolved oxygen (9), supernatant liquor drains into and produces pond (23), mud/mixed-liquor return is to anoxic section (5) and multistage anaerobic pond (7,8), in the first step anaerobic pond (7) in, sludge age is 8d-20d.
9. the method for the treatment of of Organic Wastewater according to claim 8, it is characterized in that, described MBR membrane module adopts the mode of continuous aeration, water outlet at intermittence, and being drawn water to product pond (23) and stopped producing the time ratio drawn water in pond (23) by MBR reaction tank (9) is (7min-9min): (1.5min-2.5min); The interior filler of described MBR reaction tank (9) bottom gas-water ratio is 3-5:1, and MBR membrane module bottom gas-water ratio is 16-20:1.
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