CN109502927A - A kind of integrated A 2O bioreactor - Google Patents
A kind of integrated A 2O bioreactor Download PDFInfo
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- CN109502927A CN109502927A CN201910008017.4A CN201910008017A CN109502927A CN 109502927 A CN109502927 A CN 109502927A CN 201910008017 A CN201910008017 A CN 201910008017A CN 109502927 A CN109502927 A CN 109502927A
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- 238000004062 sedimentation Methods 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 24
- 239000001301 oxygen Substances 0.000 claims abstract description 24
- 239000002351 wastewater Substances 0.000 claims abstract description 23
- 239000006228 supernatant Substances 0.000 claims abstract description 13
- 239000010802 sludge Substances 0.000 claims description 53
- 238000010992 reflux Methods 0.000 claims description 48
- 230000008676 import Effects 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 6
- 229920006262 high density polyethylene film Polymers 0.000 claims description 4
- 239000010865 sewage Substances 0.000 abstract description 42
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 28
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 18
- 239000011574 phosphorus Substances 0.000 abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 15
- 229910052799 carbon Inorganic materials 0.000 abstract description 15
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 14
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 6
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 abstract description 3
- 239000005416 organic matter Substances 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 230000004060 metabolic process Effects 0.000 description 7
- 239000011259 mixed solution Substances 0.000 description 6
- 238000005276 aerator Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000002798 spectrophotometry method Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000012286 Chitinases Human genes 0.000 description 1
- 108010022172 Chitinases Proteins 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004176 ammonification Methods 0.000 description 1
- -1 ammonium aluminate Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000018875 hypoxemia Diseases 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention provides a kind of integrated A 2O bioreactor, the direction along drainage flow successively includes anaerobic pond, anoxic selection pond, anoxic pond, aerobic tank and sedimentation basin；The anaerobic pond is provided with wastewater inlet, and the top of the sedimentation basin is provided with supernatant outlet.The setting in anoxic selection pond can reduce oxygen and anoxic pond be added in carbon source and raw water the not guilty consumption for carrying carbon source, so that reducing additional carbon adds cost, meanwhile, the purification of removing and water quality to nitrogen phosphorus has facilitation.Sewage is after anaerobic pond, anoxic selection pond and anoxic pond, realize effective denitrogenation dephosphorizing, ammonia nitrogen and organic matter in the sewage available fully degraded in aerobic tank, simultaneously, phosphorus in sewage can obtain further effectively removing in aerobic tank, and sewage passes through in sedimentation basin to be separated by solid-liquid separation, the supernatant outlet discharge that sewage supernatant after treatment is arranged from sedimentation basin top, it is more excellent to obtain preferably Nitrogen/Phosphorus Removal, effluent quality.
Description
Technical field
The present invention relates to technical field of sewage more particularly to a kind of integrated A 2O bioreactors.
Background technique
A2O technique is also known as AAO technique, is the abbreviation (anaerobism-of English Anaerobic-Anoxic-Oxic first letter
Anaerobic-aerobic method), it is a kind of common sewage treatment process, can be used for secondary sewage processing or three-level sewage treatment, Yi Jizhong
Water reuse has good Nitrogen/Phosphorus Removal.
However, existing A2O technique mostly uses Reinforced Concrete Structure design form, sedimentation basin mostly with biochemistry pool separate design, is deposited
Relatively large in construction investment, construction period is relatively long, and returns of investment recycling is slow, the realistic problems such as rate of return on investment is low, and
Existing Reinforced Concrete Structure can also generate a large amount of building wastes in transformation process, pollute environment.Meanwhile existing A2O technique pair
Carbon source consumption is larger, and for denitrogenation dephosphorizing efficiency up for improving, effluent quality is poor.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is that a kind of integrated A 2O bioreactor is provided, using this
Kind bioreactor sewage treatment, can obtain preferably Nitrogen/Phosphorus Removal, effluent quality is more excellent.
The present invention provides a kind of integrated A 2O bioreactor, the direction along drainage flow successively include anaerobic pond,
Anoxic selects pond, anoxic pond, aerobic tank and sedimentation basin；The anaerobic pond is provided with wastewater inlet, and the top of the sedimentation basin is set
It is equipped with supernatant outlet.
It preferably, further include anaerobic selection pond；
The outlet of sewer in the anaerobic selection pond is connected with the anaerobic pond.
Preferably, it is provided with aerobic mixed liquor stripping reflux device in the aerobic tank, is used for aerobic tank outlet of sewer
The part of contaminated water at place is back to aerobic tank entrance.
Preferably, further include nitrification liquid stripping reflux device, the phegma import of the nitrification liquid stripping reflux device with
The phegma outlet of the aerobic tank is connected, and phegma outlet and the anoxic of the nitrification liquid stripping reflux device select pond
It is connected.
Preferably, separator for mud and water is provided in the sedimentation basin.
Preferably, the separator for mud and water is inclined tube or inclined plate.
Preferably, sludge reflux air-lift device is additionally provided in the sedimentation basin, the sludge reflux air-lift device is used for
Partial sludge in sedimentation basin is delivered in anaerobic selection pond.
Preferably, be provided with returned sludge slot at the top of the sedimentation basin, the import of the returned sludge slot with it is described
The returned sludge outlet of sludge reflux air-lift device is connected, the reflux of the outlet and the anaerobic selection pond of the returned sludge slot
Sludge import is connected.
Preferably, the pool wall and bottom of pond of the anaerobic pond, anoxic selection pond, anoxic pond, aerobic tank and sedimentation basin are
HDPE film.
Preferably, the partition wall between the anaerobic pond, anoxic selection pond, anoxic pond, aerobic tank and sedimentation basin is non-concrete
Partition.
The present invention provides a kind of integrated A 2O bioreactor, the direction along drainage flow successively include anaerobic pond,
Anoxic selects pond, anoxic pond, aerobic tank and sedimentation basin；The anaerobic pond is provided with wastewater inlet, and the top of the sedimentation basin is set
It is equipped with supernatant outlet.The setting in anoxic selection pond can use microbial degradation polluter and carry out aerobic metabolism to disappear
The oxygen incorporated in anoxic selection pond is consumed, so that it is guaranteed that will not aerobic band by the muddy water mixed solution that anoxic selection pond enters anoxic pond
Enter and influence the realization of respective metabolism environment, reduces an innocent person that included carbon source in carbon source and raw water is added to anoxic pond in oxygen and disappear
Consumption, so that reducing additional carbon adds cost, meanwhile, the purification of removing and water quality to nitrogen phosphorus has facilitation.Sewage passes through
After anaerobic pond, anoxic selection pond and anoxic pond, effective denitrogenation dephosphorizing is realized, the ammonia nitrogen and organic matter in sewage are in aerobic tank
Available fully degraded, meanwhile, the phosphorus in sewage can obtain further effectively removing in aerobic tank, and sewage is in sedimentation basin
The middle supernatant outlet that by being separated by solid-liquid separation, sewage supernatant after treatment is arranged from sedimentation basin top discharge, to obtain
It is more excellent to obtain preferably Nitrogen/Phosphorus Removal, effluent quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the integrated A 2O bioreactor that one embodiment of the present of invention provides.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of integrated A 2O bioreactor, the direction along drainage flow successively include anaerobic pond,
Anoxic selects pond, anoxic pond, aerobic tank and sedimentation basin；The anaerobic pond is provided with wastewater inlet, and the top of the sedimentation basin is set
It is equipped with supernatant outlet.
Structure is that the structure for the integrated A 2O bioreactor that one embodiment of the present of invention provides is shown referring to Fig. 1, Fig. 1
It is intended to.Wherein, 1 is anaerobic selection pond, and 2 be anaerobic pond, and 3 select pond for anoxic, and 4 be anoxic pond, and 5 be aerobic tank, and 6 be precipitating
Pond, 7 be aerator, and 8 be aerobic mixed liquor stripping reflux device, and 9 be nitrification liquid stripping reflux device, and 10 be mud-water separation
Device, 11 be sludge reflux air-lift device, and 12 be sludge reflux slot, and 13 be advanced treatment of wastewater unit, and 14 be sludge storage pool.
Integrated A 2O bioreactor in the present invention includes anaerobic pond 2.The anaerobic pond is provided with original water inlet and dirt
Water out.Sewage (i.e. raw water) to be treated enters anaerobic pond from original water inlet.PolyP bacteria in anaerobic pond is in anaerobic environment
Under release phosphorus, part itrogenous organic substance carries out ammonification, meanwhile, convert degradable COD.Aerator, sewage are not provided in anaerobic pond
In pollutant concentration it is higher, because decomposing pollutant consumes dissolved oxygen, so that being practically free of dissolution in water body in anaerobic pond
Oxygen is suitable for the activity of anaerobe.In the embodiment of the present invention, the anaerobic pond is additionally provided with deoxidation wastewater inlet.
In an embodiment of the present invention, the integrated A 2O bioreactor further includes anaerobic selection pond 1.The anaerobism
The metabolic exhaustion that the setting in selection pond can use the progress of microorganism aerobic degradation polluter falls the involvement in anaerobic selection pond
Oxygen can reduce oxygen so that it is guaranteed that the muddy water mixed solution for subsequently entering anaerobic pond does not influence the realization of subsequent anaerobic pond anaerobic environment
An innocent person's consumption to carbon source, reduces additional carbon and adds cost.The anaerobic selection pond is provided with outlet of sewer and returned sludge
Import.The outlet of sewer in the anaerobic selection pond is connected with the anaerobic pond.The returned sludge import is for receiving from precipitating
Pond conveys the returned sludge to come.Muddy water mixed solution into anaerobic selection pond needs to consume oxygen using microbe survival metabolism
Characteristic realizes combined oxygen and the fully effective removing herein of free state oxygen, and the muddy water mixed solution after deoxidation is from the anaerobism
The outlet of sewer discharge in pond is selected, the deoxidation wastewater inlet through anaerobic pond enters anaerobic pond.
In certain embodiments of the present invention, the design residence time in the anaerobic selection pond is no more than 1h.In the present invention
Integrated A 2O bioreactor further include anoxic selection pond 3.Anoxic selection pond is provided with wastewater inlet and sewage goes out
Mouthful.The wastewater inlet in anoxic selection pond is connected with the outlet of sewer of the anaerobic pond.It is flowed out from the outlet of sewer of anaerobic pond
Sewage enter anoxic selection pond.
In certain embodiments of the present invention, anoxic selection pond is additionally provided with phegma import, for receiving from good
Oxygen pond conveys the reflux nitrification liquid to come.The setting in anoxic selection pond can use microorganism aerobic degradation polluter into
Capable metabolism and consuming incorporates oxygen (such as nitrification liquid stripping reflux incorporate oxygen) in anoxic selection pond, so that it is guaranteed that anoxic is selected
Selecting pond and entering the muddy water mixed solution of anoxic pond does not influence the realization of subsequent anoxic pond anaerobic environment, reduces oxygen and disappears to an innocent person of carbon source
Consumption reduces additional carbon and adds cost, realizes effective removing of combined oxygen and free state oxygen.Nitrification liquid stripping reflux because compared with
Low energy consumption can realize the large scale reflux higher than tradition machinery pump, can promote the promotion of traditional A2O nitric efficiency.
In certain embodiments of the present invention, the design residence time in anoxic selection pond is no more than 1h.
Integrated A 2O bioreactor in the present invention further includes anoxic pond 4.The anoxic pond be provided with wastewater inlet and
Outlet of sewer.The wastewater inlet of the anoxic pond is connected with the outlet of sewer in anoxic selection pond.Pond is selected from the anoxic
Outlet of sewer discharge sewage the anoxic pond carry out denitrification denitrogenation, realize effective removing of nitrogen.Anoxic pond is in nothing
It is suitable for the growth and breeding of denitrifying bacterium, to improve the removal efficiency of nitrogen in the case where oxygen or hypoxemia and sufficient carbon source.
In certain embodiments of the present invention, the anoxic pond is additionally provided with original water inlet.Sewage to be treated is (i.e. former
Water) for a part into anaerobic pond, another part enters anoxic pond.Sewage (i.e. raw water) to be treated carries out in the anoxic pond
Denitrification denitrogenation realizes effective removing of nitrogen.
Integrated A 2O bioreactor in the present invention further includes aerobic tank 5.The aerobic tank be provided with wastewater inlet and
Outlet of sewer.The wastewater inlet of the aerobic tank is connected with the outlet of sewer of the anoxic pond.Go out from the sewage of the anoxic pond
The sewage of mouth discharge enters aerobic tank.In an embodiment of the present invention, it is provided with aerator 7 in the aerobic tank, for giving
Aerobic tank is efficiently oxygenated.More suitable environment is provided for the growth and breeding of aerobic microbiological, to be effectively treated in sewage
Polluter.The present invention has no special limitation to the installation site of the aerator, using known to those skilled in the art
Installation site.In certain embodiments of the present invention, the aerator is aerobic air blower.
In an embodiment of the present invention, aerobic mixed liquor stripping reflux device 8 is provided in the aerobic tank, for that will get well
The part of contaminated water of oxygen Chi Wushuichukouchu is back to aerobic tank entrance, to dilute the dirt of high concentration at aerobic tank wastewater inlet
Water.In the embodiment of the present invention, the aerobic mixed liquor stripping reflux device is mixed using the muddy water that air is realized as power source
The air-lift device that liquid is promoted is closed, the present invention has no special limitation to this, can be commercially available gas device, such as PTB-65-
D25 type air-lift device (Ou Ji (Shanghai) Environmental Protection Technology Co., Ltd).The present invention is to the aerobic mixed liquor stripping reflux device
Installation site have no special limitation, can be by first part's sewage backflow at aerobic tank outlet of sewer to aerobic tank import
Place.The effect of the aerobic mixed liquor stripping reflux device is thoroughly mixed and waterpower plug-flow provides side for aerobic tank realization
It helps, to realize that the aerobic tank of traditional A2O is changed into the fluidised form being thoroughly mixed with plug-flow phase perfect combination by pulling flow type, reaches true
Complete low upshift operation in positive meaning, the effective superiority environment for ensureing that the low matrix growth metabolism of nitrifier is required, improves
System impact resistance promotes nitration reaction thoroughly to carry out, and improves denitrogenation removal efficiency.In certain embodiments of the present invention,
The stripping reflux of aerobic mixed liquor is than under normal conditions not less than 20 times of water inlet in the aerobic tank.Ammonia nitrogen in sewage and have
Machine object available fully degraded in aerobic tank, meanwhile, the phosphorus in sewage can obtain further effectively de- in aerobic tank
It removes.
In certain embodiments of the present invention, the aerobic tank is additionally provided with phegma outlet.
In an embodiment of the present invention, the integrated A 2O bioreactor further includes nitrification liquid stripping reflux device 9.
The nitrification liquid stripping reflux device 9 is used to for the second part sewage (i.e. reflux nitrification liquid) in 5 exit of aerobic tank being back to
Anoxic selects pond 3.The nitrification liquid stripping reflux device is provided with phegma import and phegma outlet.The nitrification liquid air lift
The phegma import of reflux unit is connected with the outlet of the phegma of the aerobic tank, the reflux of the nitrification liquid stripping reflux device
Liquid outlet is connected with anoxic selection pond.In certain embodiments of the present invention, time of the nitrification liquid stripping reflux device
Flow liquid outlet is connected with the phegma import in anoxic selection pond.Peace of the present invention to the nitrification liquid stripping reflux device 9
Holding position has no special limitation, can be back to the second part sewage (i.e. reflux nitrification liquid) in 5 exit of aerobic tank scarce
Oxygen selects pond 3.In certain embodiments of the present invention, the nitrification liquid stripping reflux device is real by power source of air
Existing air promotes the air-lift device of nitrification liquid, and the present invention has no special limitation to this, can be commercially available gas device, such as
PTB-65-X25 type air-lift device (Ou Ji (Shanghai) Environmental Protection Technology Co., Ltd).In an embodiment of the present invention, the nitrification
Liquid stripping reflux than being between 150~500% under normal conditions.
Integrated A 2O bioreactor in the present invention further includes sedimentation basin 6.It is discharged from the outlet of sewer of the aerobic tank
Sewage enter sedimentation basin.In an embodiment of the present invention, it is provided with separator for mud and water 10 in the sedimentation basin, for that will enter
Sewage in sedimentation basin is separated by solid-liquid separation.In an embodiment of the present invention, the top of the sedimentation basin is provided with supernatant and goes out
Mouthful.In certain embodiments of the present invention, the separator for mud and water is inclined tube or inclined plate.The present invention is to the inclined tube and inclined plate
Material has no special limitation, can be Propylene polymerization material, glass steel or stainless steel.In certain embodiments of the present invention,
The separator for mud and water is provided with wastewater inlet, outlet of sewer and sludge outlet.The wastewater inlet of the separator for mud and water and institute
The outlet of sewer for stating aerobic tank is connected.The sludge being discharged from the sludge outlet of the separator for mud and water can be temporarily stored into sedimentation basin bottom
Portion.The sewage being discharged from the outlet of sewer of separator for mud and water is discharged via the outlet of sewer of sedimentation basin, and water quality is more excellent.The present invention couple
The installation site of the separator for mud and water has no special limitation, can be realized into the sewage of sedimentation basin separation of solid and liquid i.e.
It can.
In an embodiment of the present invention, sludge reflux air-lift device 11 is additionally provided in the sedimentation basin, the sludge returns
Stream air-lift device 11 is for the partial sludge in sedimentation basin 6 to be delivered in anaerobic selection pond.In an embodiment of the present invention, institute
It states sedimentation basin and is provided with returned sludge outlet.In certain embodiments, the sludge reflux air-lift device is provided with returned sludge
Import and returned sludge outlet.The returned sludge import of the sludge reflux air-lift device and the returned sludge of the sedimentation basin go out
Mouth is connected, and the returned sludge outlet of the sludge reflux air-lift device is connected with the returned sludge import in the anaerobic selection pond.
In certain embodiments of the present invention, the sludge reflux air-lift device is that sludge air may be implemented by power source of air to mention
The air-lift device risen, the present invention have no special limitation to this, can be commercially available gas device, such as PTB-65-L25 type gas
Mention device (Ou Ji (Shanghai) Environmental Protection Technology Co., Ltd).In an embodiment of the present invention, sludge air lift reflux ratio usual situation
It is 150~350%.
In certain embodiments of the present invention, returned sludge slot 12 is provided at the top of the sedimentation basin, the reflux is dirty
The returned sludge outlet of the import of mud groove and the sludge reflux air-lift device is connected, the outlet of the returned sludge slot with it is described
The returned sludge import in anaerobic selection pond is connected.
In an embodiment of the present invention, the sedimentation basin is additionally provided with excess sludge outlet.
In an embodiment of the present invention, the integrated A 2O bioreactor further includes advanced treatment of wastewater unit 13.Institute
It states advanced treatment of wastewater to be connected with the outlet of sewer of the sedimentation basin, the sewage being discharged from sedimentation basin can be in advanced treatment of wastewater
Unit carries out further advanced treating.The present invention has no special limit to the structure and equipment of the advanced treatment of wastewater unit
System can according to need and increase corresponding advanced treatment of wastewater equipment.
In certain embodiments of the present invention, the integrated A 2O bioreactor further includes sludge storage pool 14.The dirt
Mud reservoir is connected with the outlet of the excess sludge of the sedimentation basin, for remaining sludge in settlement on storage pond.
In an embodiment of the present invention, the anaerobic selection pond, anaerobic pond, anoxic select pond, anoxic pond, aerobic tank and sink
The pool wall and bottom of pond in shallow lake pond are HDPE film.The present invention replaces the Reinforced Concrete Structure of the prior art using HDPE film, has very high
Corrosion-resistant, resistance to oxidation characteristic, it is adaptable to different influent qualities.Especially its low, short construction period of investment and it was transformed
Too many secondary pollution will not be caused in journey to environment.
In an embodiment of the present invention, the anaerobic selection pond, anaerobic pond, anoxic select pond, anoxic pond, aerobic tank and sink
Partition wall between the pond of shallow lake is non-concrete partition.In certain embodiments, the shape of the non-concrete partition is corrugated or bee
Nest shape, the non-concrete partition are lightweight PP plate, glass epoxy or stainless steel plate.The present invention is replaced existing using non-concrete partition
Reinforced Concrete Structure in technology, can be effectively reduced cost of investment.
The present invention, as separator for mud and water, can effectively improve the surface loading of traditional sedimentation basin extremely using inclined tube or inclined plate
1.5~3.0m3/(m2It * h), while can be effectively 5~12g/L by the sludge concentration control in aerobic tank.
The water quality being discharged from the outlet of sewer of sedimentation basin is more excellent, and Nitrogen/Phosphorus Removal is more excellent.
Using a kind of integrated A 2O bioreactor sewage treatment provided by the invention, preferably denitrogenation can be obtained and removed
Phosphorus effect, effluent quality are more excellent.
The present invention provides a kind of integrated A 2O bioreactor, the direction along drainage flow successively include anaerobic pond,
Anoxic selects pond, anoxic pond, aerobic tank and sedimentation basin；The anaerobic pond is provided with wastewater inlet, and the top of the sedimentation basin is set
It is equipped with supernatant outlet.The setting in anoxic selection pond can use microbial degradation polluter and carry out aerobic metabolism to disappear
The oxygen incorporated in anoxic selection pond is consumed, so that it is guaranteed that will not aerobic band by the muddy water mixed solution that anoxic selection pond enters anoxic pond
Enter and influence the realization of respective metabolism environment, reduces an innocent person that included carbon source in carbon source and raw water is added to anoxic pond in oxygen and disappear
Consumption, so that reducing additional carbon adds cost, meanwhile, the purification of removing and water quality to nitrogen phosphorus has facilitation.Sewage passes through
After anaerobic pond, anoxic selection pond and anoxic pond, effective denitrogenation dephosphorizing is realized, the ammonia nitrogen and organic matter in sewage are in aerobic tank
Available fully degraded, meanwhile, the phosphorus in sewage can obtain further effectively removing in aerobic tank, and sewage is in sedimentation basin
The middle supernatant outlet that by being separated by solid-liquid separation, sewage supernatant after treatment is arranged from sedimentation basin top discharge, to obtain
It is more excellent to obtain preferably Nitrogen/Phosphorus Removal, effluent quality.
In order to further illustrate the present invention, anti-to a kind of integrated A 2O biology provided by the invention with reference to embodiments
It answers device to be described in detail, but limiting the scope of the present invention cannot be understood as.
Embodiment 1
Integrated A 2O bioreactor shown in FIG. 1 is used for the sewage treatment in the Jiyuan village Jiu Hezhuan.Dirt before processing
Water COD value is 228mg/L, ammonia-nitrogen content 69.6mg/L, total phosphorus content 3.5mg/L, total nitrogen content 72.6mg/L, solid
Suspended matter is 66mg/L.
According to HJ 828-2017 " the measurement dichromate titration of water chemical oxygen demand " standard, the COD of effluent quality is detected
Value；According to HJ 535-2009 " the measurement Berthelot spectrophotometry of Water quality ammonia nitrogen " standard, the ammonia nitrogen of effluent quality is detected
Value；According to GB 11893-1989 " the measurement ammonium aluminate spectrophotometry of water quality total phosphorus " standard, the total phosphorus of effluent quality is detected
Value；According to HJ 636-2012 " the measurement alkaline chitinase of water quality total nitrogen clears up ultraviolet spectrophotometry " standard, detection water outlet
Total values of nitrogen might of water quality；According to GB 11901-1989 " the measurement gravimetric method of water quality suspended matter " standard, the total phosphorus of effluent quality is detected
Value.
After processing, the COD value for the water body being discharged from the outlet of sewer of sedimentation basin is 35mg/L, and ammonia-nitrogen content is
0.383mg/L, total phosphorus content 0.084mg/L, total nitrogen content 2.66mg/L, solid suspension 7mg/L.As can be seen that
The Nitrogen/Phosphorus Removal of integrated A 2O bioreactor provided by the invention is more excellent, and effluent quality is more excellent.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of integrated A 2O bioreactor, the direction along drainage flow successively includes anaerobic pond, anoxic selection pond, lacks
Oxygen pond, aerobic tank and sedimentation basin；The anaerobic pond is provided with wastewater inlet, and the top of the sedimentation basin is provided with supernatant and goes out
Mouthful.
2. integrated A 2O bioreactor according to claim 1, which is characterized in that further include anaerobic selection pond；
The outlet of sewer in the anaerobic selection pond is connected with the anaerobic pond.
3. integrated A 2O bioreactor according to claim 1, which is characterized in that be provided in the aerobic tank
Oxygen mixed liquor stripping reflux device, for the part of contaminated water at aerobic tank outlet of sewer to be back to aerobic tank entrance.
4. integrated A 2O bioreactor according to claim 1, which is characterized in that further include nitrification liquid stripping reflux
The phegma import of device, the nitrification liquid stripping reflux device is connected with the outlet of the phegma of the aerobic tank, the nitrification
The phegma outlet of liquid stripping reflux device is connected with anoxic selection pond.
5. integrated A 2O bioreactor according to claim 1, which is characterized in that be provided with mud in the sedimentation basin
Separator.
6. integrated A 2O bioreactor according to claim 5, which is characterized in that the separator for mud and water is inclined tube
Or inclined plate.
7. integrated A 2O bioreactor according to claim 2, which is characterized in that be additionally provided in the sedimentation basin
Sludge reflux air-lift device, the sludge reflux air-lift device are used to the partial sludge in sedimentation basin being delivered to anaerobic selection pond
In.
8. integrated A 2O bioreactor according to claim 2, which is characterized in that set at the top of the sedimentation basin
It is equipped with returned sludge slot, the import of the returned sludge slot is connected with the outlet of the returned sludge of the sludge reflux air-lift device,
The outlet of the returned sludge slot is connected with the returned sludge import in the anaerobic selection pond.
9. integrated A 2O bioreactor according to claim 1, which is characterized in that the anaerobic pond, anoxic selection
Pond, anoxic pond, aerobic tank and sedimentation basin pool wall and bottom of pond be HDPE film.
10. integrated A 2O bioreactor according to claim 1, which is characterized in that the anaerobic pond, anoxic selection
Partition wall between pond, anoxic pond, aerobic tank and sedimentation basin is non-concrete partition.
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| CN110386738A (en) * | 2019-08-13 | 2019-10-29 | 青岛思普润水处理股份有限公司 | A kind of long runner stripping reflux MBBR integral system and operation method |
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