CN106554075A - Micro- aerobic recirculating fluidized bed membrane bioreactor and system - Google Patents
Micro- aerobic recirculating fluidized bed membrane bioreactor and system Download PDFInfo
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
A kind of micro- aerobic recirculating fluidized bed membrane bioreactor, the main body of the reactor include：And oxygen reaction zone, the outer cylinder portion of main body is constituted, organic sewage enters the region by the water inlet water-distributing device that portion's periphery on the area is arranged, and is distributed with this region and oxygen sludge, carries out biological decomposition and removal to some organic pollutants in organic sewage；And micro- aerobic ciculation fluidized reaction zone, constitute the inner cylindrical portion of main body, it is arranged on the middle part of this and oxygen reaction zone, and its bottom is connected with simultaneous oxygen reaction zone, by ciculation fluidized between the solidliquid mixture of inner/outer tube, and micro- aerobic condition is maintained in micro- aerobic ciculation fluidized reaction so that micro- aerobic microbiological is distributed with micro- aerobic ciculation fluidized reaction zone, further biological decomposition and removal are carried out to the organic pollution in organic sewage.The present invention can process high solids content, the cultivation slaughtering wastewater of high pollution thing and industrial organic sewage.Can the such waste water of effectively solving bring high pollution, difficult degradation the problems such as.
Description
Technical field
The present invention relates to a kind of combine doughnut film process large arch dam using simultaneous oxygen and micro- aerobic microbiological
Amount, the cultivation slaughtering wastewater of high pollution thing and the equipment of industrial organic sewage, it is more particularly to a kind of micro- aerobic
Recirculating fluidized bed membrane bioreactor, it is based on multiple-microorganism composite flora, with reference to recycle stream
The organic contamination in waste water is carried out the combination work of a large amount of removals to change bed process and Hollow Fiber Membrane Separation Technology
Skill, belongs to the technical field of sewage of environmental protection.
Background technology
In recent years, with China's structure of agricultural production adjustment and agriculture industrialization propulsion, it is scale, intensive
The livestock and poultry breeding industry of change is able to fast development, becomes the important component part of China's rural economy.But this
The development of a little plants also becomes the important pollution sources of polluted-water.The waste water row of the annual livestock and poultry cultivation of China
High-volume more than 10,000,000,000 tons, considerably beyond national industrial wastewater and sanitary wastewater discharge capacity summation.Raise simultaneously
The fluctuation of the poultry waster water water yield is big, and dregginess, organic matter and concentration of nitrogen and phosphorus are high, and treatment technology is not mature enough, pipe
Reason operating cost is high, and the effluent quality overwhelming majority not yet reaches national grade one discharge standard, and environmental pollution is asked
Topic is also increasingly serious.Pollution from livestock and poultry has become the third-largest dirt after industrial pollution, domestic pollution
Dye source.Therefore, it is effectively reduction pollution of the livestock breeding wastewater to environment, it is ensured that our province livestock and poultry breeding industry
Steady and sound development, research and develop with suiting measures to local conditions waste water of livestock poultry efficiently, the treatment technology of low cost compels
In the eyebrows and eyelashes.
Traditional cropland application and Natural treatment mode can not meet Outskirts of City due to being limited by soil
The requirement that a large amount of waste water of livestock poultry are processed, therefore in the urgent need to finding a kind of economic, efficient industrial treatment
Pattern is limited the waste water of livestock poultry in area and processes to process soil.Through the research and application of decades, livestock and poultry
Breeding wastewater anaerobic treatment process has preliminarily formed several technology modes, and conventional technique includes completely
Hybrid anaerobic reactor (CSTR), anaerobic filter (AF), Anaerobic Sequencing Bath Reactor (ASBR),
Anaerobic baffle reactor (ABR), hybrid anaerobic reactor (UBF), internal-circulation anaerobic reactor (IC),
Up-flow anaerobic sludge blanket (UASB) etc..Although anaerobic bio-treated can directly process high concentration livestock and poultry
Waste water, and pollutant levels are still very high in reclaiming the energy, but Anaerobic Treatment water outlet, particularly ammonia nitrogen
Substantially do not remove, after entering water body, the impact to environment is still very big, needs further work-up.
Simultaneously because aerobe technique directly processes high concentration waste water of livestock poultry high energy consumption, operating cost is expensive, adopts
It is the most economical method generally acknowledged at present with anaerobic-aerobic combined treatment process.China's major part scale at present
Pig farm all adopts anaerobic-aerobic disposal to process animal farm wastewater, as SBR techniques can be constructed at one
Biodegradable and two kinds of effects of sludge settling are completed in thing, a complete set of second pond and sludge reflux facility is reduced,
While and energy denitrogenation dephosphorizing, it is widely used in the combination of one aerobic process of anaerobism.SBR techniques
Mainly there are two kinds of combinations, one kind is anaerobism to be controlled in hydrolysis stage, is followed by SBR techniques, such as has
There is floor space little, good treatment efficiency, the hydrolysis-SBR techniques of the low feature of operating cost.It is another kind of
It is that anaerobic reactor is followed by SBR techniques, such as precipitates-UASB-SBR techniques and " CSTR+SBR " work
Skill.The combination of two kinds of handling process has respective advantage, and hydrolysis process is with respect to anaerobic treatment process, energy
Significantly shorten process time, improve and process load, while Anaerobic Treatment has higher removal efficiency again, respectively
There are pros and cons.
Wherein, MBR is also known as membrane bioreactor (Membrane Bio-Reactor), is one kind by film
The new water technology that separative element is combined with biological processing unit.Using membrane structure type be mainly
Flat Membrane and hollow-fibre membrane.Be it is ripe be market-oriented technology, it is not necessary to protect.SBR is sequence
The abbreviation of batch activated sludge process, be it is a kind of by intermittent aerating mode come the activated sludge sewage disposal for running
Technology.Its orderly and intermittently operated being mainly characterized by operationally, the core of SBR technologies is SBR
Reaction tank, Chi Ji homogenizing, it is just heavy, biodegradable, two the function such as sink in a pond, without sludge reflux system
System.It is particularly suited for the larger occasion of intermittent discharge and changes in flow rate.It is widely used at home at present,
Water decanter is a key equipment of the method.
Although there is increasing Large-scale pig farm to employ some new technologies in recent years, introduce new
Technical equipment, but there are problems that mainly there is the following aspects：
1st, some technical equipment and technique have ignored the overall operation cost of plant in research process, cause
Operational management high cost is made to become the restraining factors that waste water of livestock poultry processes normal operation.
2nd, the nitrogen phosphorus enriched in breeding wastewater is all non-renewable resource, and these misplace the resource of position very
Easily ignored by people.
3rd, without the discharge that livestock breeding wastewater is controlled from source, difficulty and the place of wastewater treatment are increased
Reason cost, does not meet the thought of sustainable development society.
The content of the invention
To overcome the defect of prior art, the present invention to provide a kind of micro- aerobic recirculating fluidized bed membrane biological reaction
Device, can low-cost high-efficiency process high solids content, the cultivation slaughtering wastewater of high pollution thing and industry it is organic
Sewage.
To realize the purpose of the present invention, according to one embodiment of present invention, it is a kind of micro- aerobic ciculation fluidized
Bed membrane bioreactor, the main body of the reactor include：And oxygen reaction zone, constitute the outer cylindrical portion of the main body
Point, organic sewage enters the region by the water inlet water-distributing device arranged in the region outer tube top periphery,
It is distributed with this region and oxygen sludge, using the facultative microbe in this and oxygen sludge in organic sewage
Some organic pollutants carry out biological decomposition and removal；And micro- aerobic ciculation fluidized reaction zone, constitute
The inner cylindrical portion of the main body, micro- aerobic ciculation fluidized reaction zone are arranged on the middle part of this and oxygen reaction zone,
And its bottom is connected with this and oxygen reaction zone, by ciculation fluidized between the solidliquid mixture of inner/outer tube,
And micro- aerobic condition is maintained in micro- aerobic ciculation fluidized reaction zone so that this is micro- aerobic ciculation fluidized
Micro- aerobic microbiological is distributed with reaction zone, using micro- aerobic microbiological to organic sewage in organic dirt
Dye thing carries out further biological decomposition and removal.
Wherein the reactor also includes：Aerator, is arranged under micro- aerobic ciculation fluidized reaction zone
Side, maintains the described micro- aerobic condition in micro- aerobic ciculation fluidized reaction zone to be passed through air,
The organic sewage of the simultaneous oxygen reaction zone realizes inner/outer tube using aerodynamic castering action of the aerator
Solidliquid mixture between it is described ciculation fluidized；And hollow fiber film assembly, it is arranged on this micro- aerobic
Ciculation fluidized reaction zone middle and upper part, the mud of solidliquid mixture after the hollow fiber film assembly realizes reaction
Water is separated, and organic sludge is throttled in micro- aerobic ciculation fluidized reaction zone, while clear water is extracted out should
Reactor.
The flow of the reactor is entered by controlling organic sewage wherein, and by controlling between inner/outer tube
Different oxygen content so that the microorganism in the reactor reaches the voluntarily balance for generating and consuming.
Wherein the reactor also includes：Mixed liquor deflector, is arranged on micro- aerobic ciculation fluidized reaction zone
Barrel bottom outside, forms to the ciculation fluidized state for promoting mixed liquor；And auxiliary aerator, insert
Enter in the bottom of the hollow fiber film assembly, it is to be passed through air to the hollow fiber film assembly bottom, real
Aeration is aided in now, while washing away the cleaning hollow fiber film assembly to avoid in sludge impurity blocking membrane module
Duct.
The dissolved oxygen of the wherein simultaneous oxygen reaction zone is controlled in 0-0.5mg/l；Micro- aerobic ciculation fluidized reaction zone
Dissolved oxygen control in 0.5-1.0mg/l.
Wherein the ratio of height to diameter of the main body is 2: 1～10: 1.
The inner loop flow of the wherein reactor is process sewage quantity 2-20 times.
Reaction time of the wherein described organic sewage in reactor is 1-4 days.
Wherein the reaction temperature of the reactor is 10-60 DEG C, the pH of microorganism suitable growth in the reactor
It is worth for 5.5～8.5.
The removal efficiency of the wherein pollutant of the reactor can reach more than 90%.
Wherein the reactor sludge yield is seldom or without output.
According to another embodiment of the present invention, a kind of micro- aerobic recirculating fluidized bed membrane bio-reaction system, bag
Micro- aerobic recirculating fluidized bed membrane bioreactor as above is included, the wherein system also includes：It is vertical-flow
Sedimentation basin, adds flocculant in pending organic sewage, subsequently into the vertical sedimentation basin, leads to
Cross precipitation and remove the large particulate matter in sewage；Intermediate pool, from the supernatant that the sedimentation basin flows out
The intermediate pool is flowed into, for storing sewage and ensureing the water inlet of next stage treatment facility, has so far been completed
The pre-treatment of machine sewage, the water outlet after pre-treatment enter micro- aerobic recirculating fluidized bed membrane bioreactor,
Organic sewage is maintained by the effect of local aeration and oxygen and environment that is micro- aerobic and depositing in the reactor, and
Fluidisation is circulated by aeration effect, the micro- aerobic microbiological, facultative microbe in the reactor is to institute
Stating COD and polluter in organic sewage, sludge carries out degradation treatment, realizes the near of activated sludge
Zero-emission；And discharge bay, enter from the water outlet of micro- aerobic recirculating fluidized bed membrane bioreactor outflow
Enter the discharge bay, realize qualified discharge.
The present invention using facultative microbe, micro- aerobic microbiological collective effect by the COD in sewage and
Polluter carries out Degradation and Transformation, and the removal efficiency of pollutant can reach more than 90%.With existing anaerobism,
Aerobic treatment process is compared, the technology have high treating effect, sludge zero discharge, take up an area less, technique knot
The advantages of structure integration.
Description of the drawings
Fig. 1 is the structural representation of the micro- aerobic recirculating fluidized bed membrane bioreactor of the present invention；
Fig. 2 is the configuration figure of the micro- aerobic recirculating fluidized bed membrane bio-reaction system of the present invention.
Description of reference numerals therein is as follows：
1st, simultaneous oxygen reaction zone；2nd, micro- aerobic ciculation fluidized reaction zone；3rd, water inlet water-distributing device；4th, expose
Device of air；5th, hollow fiber film assembly；6th, mixed liquor deflector；7th, water entering section；8th, outlet part；9、
Auxiliary aerator.
Specific embodiment
Describe the present invention with reference to the accompanying drawings and examples.
As shown in figure 1, for the present invention micro- aerobic recirculating fluidized bed membrane bioreactor structural representation.
An embodiment of the invention, micro- aerobic recirculating fluidized bed membrane bioreactor include main body, the master
Body device is cylindrical shape.The main body includes：And oxygen reaction zone 1, the outer cylinder portion of the main body is constituted, is had
Machine sewage enters the reactor from water entering section 7, and by setting in the simultaneous 1 outer tube top periphery of oxygen reaction zone
The water inlet water-distributing device 3 put enters the region, and the water (flow) direction in the region is from top to bottom, using the area
Facultative microbe in domain carries out bioconversion to the COD and sludge in organic sewage, and can realize
The near-zero release of activated sludge.
Micro- aerobic recirculating fluidized bed membrane bioreactor also includes micro- aerobic ciculation fluidized reaction zone 2, structure
Into the inner cylindrical portion of the main body, micro- aerobic ciculation fluidized reaction zone 2 is arranged on the simultaneous oxygen reaction zone 1
Middle part, and connected with this and oxygen reaction zone 1 by its bottom, in micro- aerobic ciculation fluidized reaction zone 2
It is middle to maintain micro- aerobic condition, by ciculation fluidized between the solidliquid mixture of inner/outer tube so that flow to
Solidliquid mixture in the reaction zone 2 is formed as micro- aerobic microbiological, using micro- aerobic microbiological to having
Organic pollution in machine sewage carries out further biological decomposition and removal.Exist in the inner core reaction zone 2
Most organic pollutions in sewage can be decomposed and be removed by a large amount of organic active sludge.
The reactor also includes：Aerator 4, is arranged under micro- aerobic ciculation fluidized reaction zone 2
Side, realizes inner/outer tube using the castering action of aerator 4 by the organic sewage of the simultaneous oxygen reaction zone 1
Solidliquid mixture between it is ciculation fluidized, the aerator 4 is realizing the solid-liquid using air push power
Mixture it is ciculation fluidized while, also to adjust the dissolving in micro- aerobic ciculation fluidized reaction zone 2
Oxygen concentration, maintains micro- aerobic condition, and the water (flow) direction of area's sewage is from the bottom up, using micro- aerobic micro-
Biology is further degraded to the COD in sewage；And hollow fiber film assembly 5, it is arranged on this micro-
Aerobic 2 middle and upper part of ciculation fluidized reaction zone, less than ciculation fluidized liquid level, by hollow fiber film assembly 5
The mud-water separation of solidliquid mixture after realizing reacting, organic sludge is throttled micro- aerobic ciculation fluidized anti-at this
Answer in area 2, while extracting clear water out the reactor.
The hollow fiber film assembly 5 is market ripe, is embedded generally by steel body framework and closely
Macromolecule organic material lamination constitute, the hole of inside and outside connection is also distributed with the organic material lamination
Road, here is omitted.
The reactor also includes：Mixed liquor deflector 6, is arranged on micro- aerobic ciculation fluidized reaction zone 2
Barrel bottom outside, forms to the ciculation fluidized state for promoting mixed liquor, i.e. in the simultaneous oxygen reaction zone 1
Sewage when flowing from top to bottom, water conservancy diversion is carried out by mixed liquor deflector 6, to prevent sludge in bottom of pond
Accumulation, it is to avoid formed in " dead band "；And auxiliary aerator 9, it is inserted in the hollow fiber film assembly 5
Bottom, be passed through air to the membrane module bottom, realize auxiliary aeration effect, while from auxiliary aeration dress
Put 9 outflows bubble also wash away cleaning the hollow fiber film assembly 5, to avoid sludge and reaction product
The duct in membrane module is blocked Deng impurity.
Under aerobic reaction environment, substantial amounts of extracellular polymeric can be produced, these polymer easily block film
Duct in component, and in the reactor of the present invention, it is micro- aerobic reaction environment, produce extracellular polymeric
Amount is fewer, therefore, the hollow fiber film assembly 5 in the reactor of the present invention is easier to cleaning and washes away.
Wherein the water inlet water-distributing device 3 is arranged on ciculation fluidized liquid level, along the outer tube wall of agent set
The inner side girth distribution of the outer wall of oxygen reaction zone 1 (i.e. and), realizes water distribution uniformity in the form of cloth mill weir.
The dissolved oxygen of the wherein simultaneous oxygen reaction zone 1 is controlled in 0-0.5mg/l；Micro- aerobic ciculation fluidized reaction
The dissolved oxygen in area 2 is controlled in 0.5-1.0mg/l.
The inner loop flow of the wherein reactor is process sewage quantity 2-20 times, i.e. the present invention's follows
Ring vulcanization bed (including simultaneous oxygen reaction zone 1 and micro- aerobic 2 two parts of ciculation fluidized reaction zone) is with one
Interior circulation parameter, refers to the amount of mixed liquor circulation in the reactor in the unit interval, and it is every that this amount is required
2-20 times of the new sewage quantity that its reactor was processed within the unit interval.
The removal efficiency of the wherein pollutant of the reactor can reach more than 90%.
The reactor of the present invention is using the outlet part 8 being made up of self-priming centrifugal pump and water-supply-pipe from the membrane module
Draw water in 5, that realizes muddy water is separated by filtration (that is, one of major function of the hollow fiber film assembly 5
Exactly it is separated by filtration), water outlet can be up to standard, and the membrane module 5 can be carried out instead according to actually used situation
Rinse.
Facultative microbe in described and oxygen reaction zone 1 is slow by inoculation of activated-sludge when equipment starts
It is slow to cultivate out.
Facultative microbe is that seed sludge brings, as long as being passed through activated sludge when equipment starts, with
The operation of equipment, can slowly turn out the good simultaneous oxygen sludge of new settling property or floc sludge, the sludge
In contain substantial amounts of facultative microbe, so-called facultative microbe refers to anaerobe and micro- aerobic microbiological
And a kind of state deposited, its Dissolved Oxygen concentration Control is in 0-0.5mg/l.
In an embodiment of the present invention, the main body is cylindrical shape, and the ratio of height to diameter of main body reactor is 2: 1～10:
1.The reaction temperature of the reactor is 10-60 DEG C, and in the reactor, the pH value of microorganism suitable growth is
5.5～8.5.
Reaction time of the organic sewage in reactor is 1-4 days.
The flow of the reactor is entered by controlling organic sewage, and it is different between inner/outer tube by controlling
Oxygen content, and hollow fiber film assembly 5 with the use of causing most of organic sludge to be trapped within this
In reactor so that the microorganism in the reactor reaches the voluntarily balance for generating and consuming, i.e. in dirt
The normal operating phase of water process, the sludge yield of the reactor are few or without output, it is thus achieved that
The near-zero release of sludge.
Further, since the near-zero release of sludge, its long-term savings participation reaction in the reactor so that this
Content of microorganisms in the reactor of invention can reach the 3～4 of prior art (such as anaerobic reactor)
Times, the benefit of sewage disposal is drastically increased, the nitrogen phosphorus contained in sludge is after accumulation to a certain extent
Nitrogen (N can be automatically converted to2) and hydrogen phosphide (H3P) gas discharges outer (that is, the present invention of reactor
Denitrogenation and dephosphorization when can realize sewage disposal), wherein hydrogen phosphide it is extraneous meet oxygen after can aoxidize quickly
Into nontoxic P2O5Crystalline powder.The phosphatization hydrogen amount of present invention discharge seldom, and its be converted at once it is nontoxic
P2O5Crystalline powder, thus air will not be polluted.
Fig. 2 is the system configuration with micro- aerobic recirculating fluidized bed membrane bioreactor as core of the present invention
Figure.
Fig. 2 is referred to, according to another embodiment of the present invention, a kind of micro- aerobic recirculating fluidized bed film is biological
Reaction system, including micro- aerobic recirculating fluidized bed membrane bioreactor as above, the wherein system also
Including：Vertical sedimentation basin, adds flocculant in pending organic sewage, subsequently into the perpendicular stream
Formula sedimentation basin, removes the large particulate matter in sewage by precipitation；Intermediate pool, from the sedimentation basin
The supernatant of outflow flows into the intermediate pool, for storing sewage and ensureing the water inlet of next stage treatment facility,
So far the pre-treatment of organic sewage is completed, the water outlet after pre-treatment enters micro- aerobic recirculating fluidized bed film
Bioreactor, in the reactor organic sewage by local aeration effect maintain and oxygen and it is micro- it is aerobic simultaneously
The environment deposited, and be circulated fluidisation by aeration effect, it is micro- aerobic microbiological in the reactor, simultaneous
Oxygen animalcule carries out degradation treatment to the COD and polluter in the organic sewage, sludge, realizes
The near-zero release of activated sludge；And discharge bay, from micro- aerobic recirculating fluidized bed membrane bioreactor
The water outlet of outflow enters the discharge bay, realizes qualified discharge.
Present device using facultative microbe, micro- aerobic microbiological collective effect by the COD in sewage
And polluter carries out Degradation and Transformation, the removal efficiency of pollutant can reach more than 90%.Detest with existing
Oxygen, aerobic treatment process are compared, the technology have high treating effect, sludge zero discharge, take up an area less, work
The advantages of skill is structure-integrated.
The present invention also developed one kind based on multiple-microorganism composite flora, combine Circulating Fluidized Bed Process
And the system that the organic contamination in waste water is carried out a large amount of removals by Hollow Fiber Membrane Separation Technology, height can be processed
Solid content, the cultivation slaughtering wastewater of high pollution thing and industrial organic sewage.Such waste water can effectively be solved
The high pollution that brings, the problem of difficult degradation.
Claims (10)
1. a kind of micro- aerobic recirculating fluidized bed membrane bioreactor, the main body of the reactor include：
And oxygen reaction zone (1), the outer cylinder portion of the main body is constituted, organic sewage is by the region outer tube
The water inlet water-distributing device (3) that top periphery is arranged is distributed with and oxygen sludge in this region into the region,
The some organic pollutants in organic sewage are carried out with biological point using the facultative microbe in this and oxygen sludge
Solution and removal；And
Micro- aerobic ciculation fluidized reaction zone (2), constitutes the inner cylindrical portion of the main body, micro- aerobic recycle stream
Change the middle part that reaction zone (2) is arranged on this and oxygen reaction zone (1), and its bottom and this and oxygen reaction zone
(1) connect, by ciculation fluidized between the solidliquid mixture of inner/outer tube, and in micro- aerobic circulation
Micro- aerobic condition is maintained in fluidized reaction zone (2) so that in micro- aerobic ciculation fluidized reaction zone (2)
Micro- aerobic microbiological is distributed with, the organic pollution in organic sewage is carried out using micro- aerobic microbiological
Further biological decomposition and removal.
2. micro- aerobic recirculating fluidized bed membrane bioreactor according to claim 1, the wherein reaction
Device also includes：
Aerator (4), is arranged on the lower section of micro- aerobic ciculation fluidized reaction zone (2), to logical
Enter air to maintain the described micro- aerobic condition in micro- aerobic ciculation fluidized reaction zone (2), in the simultaneous oxygen
The organic sewage of reaction zone (1) is realized interior using aerodynamic castering action of the aerator (4)
It is described ciculation fluidized between the solidliquid mixture of outer tube；And
Hollow fiber film assembly (5), is arranged on micro- aerobic ciculation fluidized reaction zone (2) middle and upper part,
After the hollow fiber film assembly (5) realizes reaction, the mud-water separation of solidliquid mixture, dirty by organic oxygen
Mud throttling is interior in micro- aerobic ciculation fluidized reaction zone (2), while extracting clear water out the reactor.
3. micro- aerobic recirculating fluidized bed membrane bioreactor according to claim 1 and 2, wherein leading to
The flow that control organic sewage enters the reactor is crossed, and is contained by controlling different oxygen between inner/outer tube
Amount so that the microorganism in the reactor reaches the voluntarily balance for generating and consuming.
4. micro- aerobic recirculating fluidized bed membrane bioreactor according to claim 2, the wherein reaction
Device also includes：
Mixed liquor deflector (6), is arranged on outside the barrel bottom of micro- aerobic ciculation fluidized reaction zone (2)
Side, forms to the ciculation fluidized state for promoting mixed liquor；And
Auxiliary aerator (9), is inserted in the bottom of the hollow fiber film assembly (5), to this
Hollow fiber film assembly (5) bottom is passed through air, realizes auxiliary aeration, while wash away cleaning the hollow fibre
Dimension membrane module (5) blocks the duct in membrane module to avoid sludge impurity.
5. micro- aerobic recirculating fluidized bed membrane bioreactor according to claim 1 and 2, wherein should
And the dissolved oxygen of oxygen reaction zone (1) is controlled in 0-0.5mg/l；Micro- aerobic ciculation fluidized reaction zone (2)
Dissolved oxygen control in 0.5-1.0mg/l.
6. micro- aerobic recirculating fluidized bed membrane bioreactor according to claim 1 and 2, wherein should
The ratio of height to diameter of main body is 2: 1～10: 1.
7. micro- aerobic recirculating fluidized bed membrane bioreactor according to claim 1 and 2, wherein should
The inner loop flow of reactor is 2-20 times which processes sewage quantity.
8. micro- aerobic recirculating fluidized bed membrane bioreactor according to claim 1 and 2, wherein institute
Reaction time of the organic sewage in the reactor is stated for 1-4 days.
9. micro- aerobic recirculating fluidized bed membrane bioreactor according to claim 1 and 2, wherein should
The reaction temperature of reactor is 10-60 DEG C, and in the reactor, the pH value of microorganism suitable growth is
5.5～8.5.
10. a kind of micro- aerobic recirculating fluidized bed membrane bio-reaction system, including such as claim 1 to 9 times
Micro- aerobic recirculating fluidized bed membrane bioreactor described in meaning one, the wherein system also include：
Vertical sedimentation basin, adds flocculant in pending organic sewage, vertical-flow subsequently into this
Sedimentation basin, removes the large particulate matter in sewage by precipitation；
Intermediate pool, the supernatant flowed out from the sedimentation basin flow into the intermediate pool, for store sewage and
Ensure the water inlet of next stage treatment facility, so far complete the pre-treatment of organic sewage, the water outlet after pre-treatment
Into micro- aerobic recirculating fluidized bed membrane bioreactor, organic sewage is by local in the reactor
Aeration effect is maintained and oxygen and environment that is micro- aerobic and depositing, and is circulated fluidisation by aeration effect, should
Micro- aerobic microbiological, facultative microbe in reactor is to the COD and pollutant in the organic sewage
Matter, sludge carry out degradation treatment, realize the near-zero release of activated sludge；And
Discharge bay, the water outlet flowed out from micro- aerobic recirculating fluidized bed membrane bioreactor enter the water outlet
Pond, realizes qualified discharge.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483635A (en) * | 2018-06-06 | 2018-09-04 | 江苏联合创业环保有限公司 | Membrane bioreaction auxiliary device of aerobic circulating fluidized bed |
| CN110092474A (en) * | 2019-05-31 | 2019-08-06 | 北京联合创业环保工程股份有限公司 | A-ACMBR technique exempts from the sewage disposal system of additional carbon removal total nitrogen |
| CN111559834A (en) * | 2020-06-10 | 2020-08-21 | 华电水务科技股份有限公司 | Synchronous denitrification coupling enhanced nitrification sewage treatment system and method |
| CN111777171A (en) * | 2020-07-10 | 2020-10-16 | 盐城工学院 | Rural domestic sewage treatment plant of ASBR |
| CN112250173A (en) * | 2020-09-09 | 2021-01-22 | 长江大学 | OIC denitrification sewage treatment device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108483635A (en) * | 2018-06-06 | 2018-09-04 | 江苏联合创业环保有限公司 | Membrane bioreaction auxiliary device of aerobic circulating fluidized bed |
| CN108483635B (en) * | 2018-06-06 | 2020-10-30 | 江苏联合创业环保有限公司 | Membrane bioreaction auxiliary device of aerobic circulating fluidized bed |
| CN110092474A (en) * | 2019-05-31 | 2019-08-06 | 北京联合创业环保工程股份有限公司 | A-ACMBR technique exempts from the sewage disposal system of additional carbon removal total nitrogen |
| CN111559834A (en) * | 2020-06-10 | 2020-08-21 | 华电水务科技股份有限公司 | Synchronous denitrification coupling enhanced nitrification sewage treatment system and method |
| CN111777171A (en) * | 2020-07-10 | 2020-10-16 | 盐城工学院 | Rural domestic sewage treatment plant of ASBR |
| CN111777171B (en) * | 2020-07-10 | 2022-02-08 | 盐城工学院 | Rural domestic sewage treatment plant of ASBR |
| CN112250173A (en) * | 2020-09-09 | 2021-01-22 | 长江大学 | OIC denitrification sewage treatment device and method |
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