CN207986809U - The AAO biochemical treatment tanks of treated sewage - Google Patents
The AAO biochemical treatment tanks of treated sewage Download PDFInfo
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- CN207986809U CN207986809U CN201720910401.XU CN201720910401U CN207986809U CN 207986809 U CN207986809 U CN 207986809U CN 201720910401 U CN201720910401 U CN 201720910401U CN 207986809 U CN207986809 U CN 207986809U
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- 239000010865 sewage Substances 0.000 title claims abstract description 83
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 216
- 239000001301 oxygen Substances 0.000 claims abstract description 216
- 238000005273 aeration Methods 0.000 claims abstract description 199
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 190
- 239000010802 sludge Substances 0.000 claims abstract description 33
- 238000010992 reflux Methods 0.000 claims abstract description 24
- 239000002351 wastewater Substances 0.000 claims description 42
- 238000005192 partition Methods 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 24
- 239000004744 fabric Substances 0.000 claims description 13
- 206010021143 Hypoxia Diseases 0.000 claims description 12
- 208000018875 hypoxemia Diseases 0.000 claims description 12
- 238000001556 precipitation Methods 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 10
- 238000005276 aerator Methods 0.000 claims description 8
- 210000004534 cecum Anatomy 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000012549 training Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 11
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 238000006396 nitration reaction Methods 0.000 abstract description 4
- 239000005416 organic matter Substances 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 11
- 229910052698 phosphorus Inorganic materials 0.000 description 11
- 239000011574 phosphorus Substances 0.000 description 11
- 241000894006 Bacteria Species 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229910002651 NO3 Inorganic materials 0.000 description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000012223 aqueous fraction Substances 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
This application discloses a kind of AAO biochemical treatment tanks of treated sewage, including anaerobic zone, anoxic zone, low-oxygen aeration area and the settling zone being wholely set, anaerobic zone is adjacent with anoxic zone, anoxic zone is adjacent with low-oxygen aeration area, low-oxygen aeration area is adjacent with settling zone, and sludge reflux channel is provided between settling zone and anaerobic zone；Sewage carries out denitrification denitrogenation in anaerobic zone, carries out anti-nitration reaction, in low-oxygen aeration area progress denitrogenation dephosphorizing, degradation COD in anoxic zone successively, enters back into the separation that settling zone carries out sludge and clear water, sludge is back to anaerobic zone through sludge reflux channel.Biochemical treatment tank provided by the utility model, realize that the synchronous of nitrification and denitrification carries out in single pond body, efficiently accomplish the thorough removal to organic matter, the system not only simplifies the operational process of system denitrogenation, energy consumption has been saved, the demand to carbon source has been reduced, improves nitric efficiency, the adverse effect brought due to NO3-N accumulation is also avoided simultaneously, has the advantages that anti-impact force is strong.
Description
Technical field
The present disclosure relates generally to sewage treatment field more particularly to a kind of AAO biochemical treatment tanks of treated sewage.
Background technology
With the development of society, the problem of water scarcity getting worse, water will be as a weight of restriction social development
Want factor.People also increasingly pay attention to the exploitation and improvement of water technology.
Biologic process for treating sewage is one kind more special in sewage treatment process, also known as activated sludge process.Activity
Sludge is a kind of method removing the pollutants such as nitrogen, phosphorus in sewage by Microbial Communities in Activated Sludge for operative body, can be divided
For aerobic method and anaerobic process etc..
AAO Process is also known as A2O methods are the abbreviation (anaerobism-of English Anaerobic-Anoxic-Oxic first letters
Anaerobic-aerobic method), it is a kind of common sewage treatment process, can be used for secondary sewage processing or three-level sewage disposal, Yi Jizhong
Water reuse has good denitrogenation dephosphorization effect.
Traditional AAO methods there are the problem of：
1.AAO techniques are difficult the effect of the denitrogenation dephosphorizing obtained simultaneously；
2. sludge circulation, than small, stability is poor；
3. by sewage disposal to complying with standard, the residence time of sewage is long, and treatment effeciency is low.
And in the prior art with AAO methods be to remove the sewage disposal system of principle there are many pool-type structure, it all deposits mostly
In investment height, high energy consumption, take up a large area, the shortcomings of impact resistance is weak.
Utility model content
In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of AAO biochemical treatment tanks of treated sewage.
The utility model provides a kind of AAO biochemical treatment tanks of treated sewage, including be wholely set anaerobic zone, anoxic
Area, low-oxygen aeration area and settling zone, the anaerobic zone, the anoxic zone and the low-oxygen aeration area are disposed adjacent successively and difference
It is separated by midfeather, water stream channel is provided on the midfeather；The anaerobic zone, the anoxic zone, the hypoxemia
Aeration zone is disposed adjacent with the settling zone, the anaerobic zone, the anoxic zone, the low-oxygen aeration area and the settling zone
Abutting end be provided with cloth waterwall, the water distributing pore for being connected to the low-oxygen aeration area and the settling zone is provided on the cloth waterwall；
Sludge reflux channel is additionally provided between the settling zone and the anaerobic zone.
Preferably, the anaerobic zone, the anoxic zone, the low-oxygen aeration area is adjacent successively and is arranged in parallel, described heavy
Shallow lake area is set to the one end in the low-oxygen aeration area, and the width of the settling zone is equal to the anaerobic zone, the anoxic zone and institute
State the width summation of low-oxygen aeration area three；
The anaerobic zone is equipped with wastewater inlet, and the wastewater inlet is arranged in the anaerobic zone far from the settling zone
Half side, the water stream channel between the anaerobic zone and the anoxic zone is set to the rwo one end far from the wastewater inlet.
Preferably, the anoxic zone is divided into the first anoxic zone and the second anoxic zone, first anoxic by the first partition wall
Area is adjacent with the anaerobic zone, and far from the low-oxygen aeration area；Second anoxic zone is adjacent with the low-oxygen aeration area, and
Far from the anaerobic zone；First partition wall both ends are respectively arranged with water stream channel；The anoxic zone and the low-oxygen aeration area
Between water stream channel be set to the rwo one end far from the wastewater inlet；Between the anaerobic zone and the anoxic zone
Water stream channel between water stream channel and the anoxic zone and the low-oxygen aeration area is right against first partition wall.
Preferably, pushing flow mixer is equipped in the anaerobic zone；
The one end at least in first anoxic zone far from the wastewater inlet and in second anoxic zone and/or
It is both provided with pushing flow mixer close to one end of the wastewater inlet.
Preferably, the low-oxygen aeration area is divided into the first low-oxygen aeration area and the second low-oxygen aeration area by the second partition wall,
First low-oxygen aeration area is adjacent with the anoxic zone, and second low-oxygen aeration area is far from the anoxic zone；Described first
Low-oxygen aeration area is provided with air plug-flow area in its water inlet end；Second low-oxygen aeration area is sunk by the water distributing pore with described
Shallow lake area is connected.
Preferably, the water inlet in first low-oxygen aeration area is arranged in first low-oxygen aeration area close to the precipitation
The one end in area；Air plug-flow area includes the water conservancy diversion wall one, opposite with the water conservancy diversion wall one close to the settling zone
Water conservancy diversion wall two and the air impeller being arranged between the water conservancy diversion wall one and the water conservancy diversion wall two；The training wall
More than liquid level, the bottom end of the water conservancy diversion wall one is detached with bottom of pond on the top of body one；The top of the water conservancy diversion wall two is in liquid
Face is hereinafter, the bottom end of the water conservancy diversion wall two is connected with bottom of pond.
Preferably, it is provided with suction mud scraper below the settling zone, sludge outlet and the sludge reflux for inhaling mud scraper are logical
Road is connected, and water outlet major trough is provided with above the settling zone, and one end of the water outlet major trough extends to outside pond；Go out described in
Water major trough both sides are respectively arranged with multiple water outlet branch slots for communicating therewith and extending to both sides, and the water outlet branch slot is along the precipitation
The length direction in area is arranged.
Preferably, it is provided with hose aerator in the low-oxygen aeration area；
And/or online PH meters are provided in the low-oxygen aeration area；
And/or online dissolved oxygen meter is provided in the low-oxygen aeration area, the online dissolved oxygen meter is connected with control system.
The utility model additionally provides a kind of AAO biochemical treatment tanks of treated sewage, including integrated setting and by every
Anaerobic zone, anoxic zone, low-oxygen aeration area and the settling zone that wall separates are provided with water stream channel on the partition wall；The anaerobic zone,
The anoxic zone and the low-oxygen aeration area are disposed adjacent successively, and the anaerobic zone is disposed adjacent with the low-oxygen aeration area；
The anaerobic zone, the low-oxygen aeration area are disposed adjacent with the settling zone；Between the settling zone and the anaerobic zone also
It is provided with sludge reflux channel.
Preferably, the anaerobic zone and the anoxic zone are adjacent and be arranged in parallel, and the low-oxygen aeration area is set to described
The side of anaerobic zone, the length in the low-oxygen aeration area are equal to the length summation of both the anaerobic zone and described anoxic zone；Institute
It states anaerobic zone and is equipped with wastewater inlet, the wastewater inlet is arranged in the anaerobic zone close to the half side of the settling zone；
The settling zone is adjacent with the anaerobic zone and is arranged in parallel, and the settling zone is set to the one of the anaerobic zone
End, the width of the settling zone are equal to the width summation of the anaerobic zone and the low-oxygen aeration area.
Preferably, the anaerobic zone is divided into the first anaerobic zone and the second anaerobic zone, first anaerobism by third partition wall
Area is adjacent with the settling zone, the low-oxygen aeration area, second anaerobic zone and the anoxic zone, low-oxygen aeration area phase
It is adjacent；Third partition wall both ends are respectively arranged with water stream channel；
Water stream channel between the anoxic zone and the anaerobic zone is set to the rwo close to the one of the wastewater inlet
End.
Preferably, the anoxic zone is divided into the first anoxic zone and the second anoxic zone, first anoxic by the 4th partition wall
Area is adjacent with second anaerobic zone, and far from the low-oxygen aeration area；Second anoxic zone and second anaerobic zone, institute
It is adjacent to state low-oxygen aeration area；The 4th partition wall both ends are respectively arranged with water stream channel；
Water stream channel between the anoxic zone and the low-oxygen aeration area is set to the rwo close to the wastewater inlet
One end.
Preferably, the low-oxygen aeration area is divided into the first low-oxygen aeration area and second low-oxygen aeration by the 5th partition wall
Area, first low-oxygen aeration area is adjacent with the anaerobic zone, and second low-oxygen aeration area is far from the anaerobic zone；Described
One low-oxygen aeration area is provided with air plug-flow area in its water inlet end；Second low-oxygen aeration area is connected with the settling zone.
Preferably, the water inlet in first low-oxygen aeration area is arranged in first low-oxygen aeration area close to the precipitation
The one end in area；Air plug-flow area includes the water conservancy diversion wall one, opposite with the water conservancy diversion wall one close to the settling zone
Water conservancy diversion wall two and the air impeller being arranged between the water conservancy diversion wall one and the water conservancy diversion wall two；The training wall
More than liquid level, the bottom end of the water conservancy diversion wall one is detached with bottom of pond on the top of body one；The top of the water conservancy diversion wall two is in liquid
Face is hereinafter, the bottom end of the water conservancy diversion wall two is connected with bottom of pond.
Preferably, the first effluent trough extended along its length is equipped with above the settling zone and along its width direction
The second effluent trough extended, second effluent trough is centrally located on the length direction of the settling zone, along the settling zone
Width direction described in be equipped with apopore at left and right sides of the second water outlet trench bottom, first effluent trough is connected with the second effluent trough
Logical, the one end of second effluent trough far from first effluent trough is cecum, and the top of second effluent trough is higher than liquid level；
The both sides of second effluent trough are respectively equipped with water receiving tank, cecum phase of the water receiving tank in second effluent trough
It is connected to and connects outlet pipe, the top of the water receiving tank is less than liquid level；
Second low-oxygen aeration area is connected with first effluent trough.
Preferably, it is provided with hose aerator in the low-oxygen aeration area；
And/or it is provided with online PH in the low-oxygen aeration area and calculates；
And/or online dissolved oxygen meter is provided in the low-oxygen aeration area, the online dissolved oxygen meter is connected with control system.
The AAO biochemical treatment tanks of treated sewage provided by the utility model are integrated biochemical treatment tank, in single pond body
It realizes that the synchronous of nitrification and denitrification carries out, efficiently accomplishes the thorough removal to organic matter, it is de- which not only simplifies system
The operational process of nitrogen, has saved energy consumption, reduces the demand to carbon source, improves nitric efficiency, while also avoiding due to nitre
State nitrogen accumulates the adverse effect brought, and has the advantages that anti-impact force is strong.
Description of the drawings
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the structural schematic diagram of the AAO biochemical treatment tanks for the treated sewage that one embodiment of the utility model provides；
Fig. 2 is the structural schematic diagram of the AAO biochemical treatment tanks for the treated sewage that another embodiment of the utility model provides；
Fig. 3 is the sectional view in the directions 1-1 in Fig. 2；
Fig. 4 is the sectional view in the directions 2-2 in Fig. 2.
Specific implementation mode
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining relevant utility model, rather than the restriction to the utility model.It further needs exist for illustrating
, illustrate only for ease of description, in attached drawing and the relevant part of utility model.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The AAO biochemical treatment tanks of treated sewage provided by the utility model, including be wholely set anaerobic zone, anoxic zone,
Low-oxygen aeration area and settling zone, anaerobic zone is adjacent with anoxic zone, and anoxic zone is adjacent with low-oxygen aeration area, low-oxygen aeration area and precipitation
Area is adjacent, and sludge reflux channel is provided between settling zone and anaerobic zone；Sewage successively in anaerobic zone carry out denitrification denitrogenation,
In the degradation that anoxic zone carries out anti-nitration reaction, carries out in low-oxygen aeration area COD, ammonia nitrogen, the pollutants such as total nitrogen, it is heavy to enter back into
Shallow lake area carries out the separation of sludge and clear water, and sludge is back to anaerobic zone through sludge reflux channel.
Embodiment 1
As shown in Figure 1, one embodiment of the utility model provides a kind of AAO biochemical treatment tanks of treated sewage, including one
Anaerobic zone 1, anoxic zone 2, low-oxygen aeration area 3 and the settling zone 4 of body setting, anaerobic zone 1, anoxic zone 2 and low-oxygen aeration area 3 are successively
It is disposed adjacent and is separated respectively by midfeather, water stream channel is provided on midfeather；Anaerobic zone 1, anoxic zone 2, hypoxemia
Aeration zone 3 is disposed adjacent with settling zone 4, and anaerobic zone 1, anoxic zone 2, low-oxygen aeration area 3 and the abutting end of settling zone 4 are provided with
Cloth waterwall 5 is provided with the water distributing pore 6 in connection low-oxygen aeration area 3 and settling zone 4 on the cloth waterwall；Between settling zone and anaerobic zone
It is additionally provided with sludge reflux channel 7.
In the present embodiment, midfeather, cloth waterwall can be wall, or partition board.
The AAO biochemical treatment tanks of treated sewage provided in this embodiment, including the anaerobic zone, anoxic zone, low that is wholely set
Oxygen aeration zone and settling zone, anaerobic zone can be used as anaerobic pond, anoxic zone that can be used as anoxic pond, and low-oxygen aeration area being capable of conduct
Hypoxemia pond, settling zone can be used as sedimentation basin, and anaerobism, anoxic, aerobic, precipitation function are realized in same pond body；It saves simultaneously
Secondary settling tank is omited so that pond body structure simplifies, and takes up an area and the comprehensive method of investment is reduced.
Further, anaerobic zone 1, anoxic zone 2, low-oxygen aeration area 3 is adjacent successively and is arranged in parallel, settling zone 4 is set to
The width of the one end in low-oxygen aeration area 3, settling zone 4 is total equal to the width of 3 three of anaerobic zone 1, anoxic zone 2 and low-oxygen aeration area
With；
Anaerobic zone 1 is equipped with wastewater inlet 8, and half side, the anaerobic zone far from settling zone 4 in anaerobic zone 1 is arranged in wastewater inlet 8
Water stream channel between 1 and anoxic zone 2 is set to the rwo one end far from wastewater inlet 8.Sewage enters from wastewater inlet 8 to be detested
Oxygen area is arranged such with the liquid mixed diluting in anaerobic zone so that mixed liquor can obtain the sufficient space of comparison and carry out instead
Denitrification reaction is nitrified, it will not short circuit.
Further, anoxic zone 2 is divided by the first partition wall 9 for the first anoxic zone 2a and the second anoxic zone 2b, the first anoxic
Area 2a is adjacent with anaerobic zone 1, and far from low-oxygen aeration area 3；Second anoxic zone 2b is adjacent with low-oxygen aeration area 3, and far from anaerobism
Area 1；First partition wall both ends are respectively arranged with water stream channel；Water stream channel between anoxic zone 2 and low-oxygen aeration area 3 is set to this
The one end of the two far from wastewater inlet；Water stream channel and anoxic zone 2 between anaerobic zone 1 and anoxic zone 2 and low-oxygen aeration area 3 it
Between water stream channel be right against the first partition wall 9.
Water stream channel quilt between water stream channel between anaerobic zone 1 and anoxic zone 2 and anoxic zone 2 and low-oxygen aeration area 3
First partition 9 separates, and sewage enters anoxic zone 2 from the water inlet end of anoxic zone, is mixed rapidly with the phegma in anoxic zone 2 dilute
It releases, flows into the second anoxic zone 2b from the first anoxic zone 2a, part flows into low-oxygen aeration area 3, most of to continue to follow in anoxic zone
Ring, so set, mixed liquor, which can obtain the sufficient space of comparison, carries out biodegradation, it will not short circuit.
Further, in anaerobic zone be equipped with pushing flow mixer 10, be stirred newly into sewage and anaerobic pond in liquid
Body；
And/or one end at least in the first anoxic zone far from wastewater inlet and in the second anoxic zone close to wastewater inlet
One end be both provided with pushing flow mixer 10, the original phegma in anoxic zone is newly stirred into the sewage of anoxic zone with from anaerobic zone
It mixes uniformly mixed.
Further, low-oxygen aeration area 3 is divided by the second partition wall 11 for the first low-oxygen aeration area 3a and the second low-oxygen aeration
Area 3b, the first low-oxygen aeration area 3a is adjacent with anoxic zone 2, and the second low-oxygen aeration area 3b is far from anoxic zone 2；First low-oxygen aeration area
3a is provided with air plug-flow area 12 in its water inlet end；Second low-oxygen aeration area 3b is connected by water distributing pore 6 with settling zone 4.
In the present embodiment, wastewater inlet 8 is arranged in anaerobic zone 1 far from the half side of settling zone 4, anaerobic zone 1 and anoxic zone 2 it
Between water stream channel be set to the rwo one end far from wastewater inlet 8；Flow between anoxic zone 2 and low-oxygen aeration area 3 is logical
Road is set to the rwo one end far from wastewater inlet.The water inlet of the first low-oxygen aeration area 3a is arranged such that close to precipitation
Area, it is convenient that cloth waterwall is set on the abutting end of the second low-oxygen aeration area 3b Yu settling zone 4, in order to the second low-oxygen aeration area 3b
It is directly connected to settling zone by the water distributing pore on cloth waterwall, connects the second low-oxygen aeration area without in addition adding channel and sink
Shallow lake area.
Further, the water inlet of the first low-oxygen aeration area 3b is arranged in the first low-oxygen aeration area close to the one of settling zone
End；Air plug-flow area includes the water conservancy diversion wall one close to settling zone, the water conservancy diversion wall two opposite with water conservancy diversion wall one and setting
Air impeller between water conservancy diversion wall one and water conservancy diversion wall two；The top of water conservancy diversion wall one is more than liquid level, water conservancy diversion wall
One bottom end is detached with bottom of pond；The top of water conservancy diversion wall two is in liquid level hereinafter, the bottom end of water conservancy diversion wall two is connected with bottom of pond.It is dirty
Water level is less than one top of water conservancy diversion wall and is higher than two top of water conservancy diversion wall, and by air impeller in one He of water conservancy diversion wall
Bubble is generated between water conservancy diversion wall two, sewage is mixed with bubble so that the sewage density between two walls is less than water conservancy diversion wall one
The sewage density in outside, thus under the action of pressure difference and gas rising bring water flowing, the sewage in one outside of water conservancy diversion wall
It can constantly be flowed into water conservancy diversion wall one and water conservancy diversion wall two via one bottom of water conservancy diversion wall, under the effect of air tightness difference so that
The liquid level of two inside of water conservancy diversion wall is higher than the liquid level in outside, and prevents liquid level from arbitrarily flowing by water conservancy diversion wall one so that liquid stream
It is constantly flowed out through two top of water conservancy diversion wall, is not necessarily to water acquisition pump reflux or diving mixer, not only avoids high power consumption, also
With preferable sewage plug-flow effect.
Further, settling zone 4 preferably uses the form of inclined-tube sedimentation tank, and the lower section of settling zone 4 is provided with suction mud scraper
(not shown), the sludge outlet for inhaling mud scraper are connected with sludge reflux channel, so as to the sludge of 3 bottom of pond of settling zone into
Row is scraped and is delivered in sludge reflux channel 6, to realize reflux；
The top of settling zone 4 is provided with water outlet major trough 4-1, and one end of water outlet major trough 4-1 extends to outside pond；Along water outlet major trough
The both sides 4-1 are respectively arranged with multiple water outlet branch slot 4-2 for communicating therewith and extending to both sides, length of the water outlet branch slot along settling zone
Direction is arranged, and is pooled to water outlet major trough after the clear liquid to collect 4 top of settling zone, and discharge.
Further, hose aerator (not shown) is provided in low-oxygen aeration area, so as to low-oxygen aeration area
And 2 be aerated；
And/or online PH meters (not shown) is provided in low-oxygen aeration area, with to mixed liquor in low-oxygen aeration area
PH value is monitored on-line；
And/or online dissolved oxygen meter (not shown) is provided in low-oxygen aeration area, online dissolved oxygen meter is connected with control system
System, the dissolved oxygen in low-oxygen aeration area is monitored on-line and be controlled.
In the present embodiment, the abutting end in anoxic zone 2 and settling zone 4, anoxic zone 2 is equipped with axial-flow pump 13.Second hypoxemia
Aeration zone 3b is connected to by the water distributing pore 6 on cloth waterwall 5 with settling zone 4, and the foul water fraction in the second low-oxygen aeration area passes through water distribution
Hole enters settling zone, is partly back to anoxic zone 2 by axial-flow pump 13, that is, realizes that the reflux of nitrification liquid, reflux ratio are 1~4, nitre
Nitrate can be supplemented to anoxic zone 2 by changing liquid reflux, and nitrate nitrogen, strengthened denitrification effect are provided for denitrification denitrogenation.
In the present embodiment, the aerator, pushing flow mixer, suction mud scraper and air impeller are the prior art
In commonly used equipment, its structure is repeated no more at this.
The AAO biochemical treatment tanks of treated sewage provided in this embodiment include for the process of treated sewage：Sewage passes through
The water inlet pipe of connection wastewater inlet enters anaerobic zone 1, realizes denitrification denitrogenation, while the anaerobism in anaerobic zone under anaerobic
It is that follow-up sewage disposal lightens the load that bacterium can be reacted by hydrolysis acidification.
Then, sewage enters anoxic zone 2 under the action of pushing flow mixer, and it is anti-to be substantially carried out denitrification under anoxic conditions
Should be that nitrogen is removed from sewage by nitrate reduction, thermophilic phosphorus bacterium anoxic releases phosphorus.Flow through anoxic zone 2 a sewage part enter it is low
Oxygen aeration zone 3, it is most of to continue the cycle in anoxic zone 2.
Into the sewage in low-oxygen aeration area 3 micro- life is utilized by controlling the dissolved oxygen in aeration tank (being less than 0.5mg/L)
Object completes the degradation to pollutants such as COD, ammonia nitrogen, total nitrogens, meanwhile, thermophilic phosphorus bacterium provides energy using carbon source organic matter in low-oxygen environment
Amount realizes increasing rapidly and breeding for cell, by H from external environment3PO4Intake is internal, and a large amount of phosphorus are absorbed under low-oxygen environment,
Anoxic zone 2, the low-oxygen aeration area 3 being arranged by pond body create being circulated throughout for a good anoxic-hypoxemia-precipitation discharge
Journey, by the phosphorus in sewage with mud discharging.
Effluent cycle is realized by air plug-flow area 12 in low-oxygen aeration area 3, in 3 end of low-oxygen aeration area (i.e. second
Low-oxygen aeration area) a part of sewage continues cycling through the process of repetition denitrogenation dephosphorizing, the COD that degrades；Another part sewage flow to water distribution
Wall, flowing to has part to flow into settling zone by water distributing pore in the sewage of cloth waterwall, separately has part by being arranged on settling zone 2
Axial-flow pump is back to anoxic zone, and the sewage that settling zone is flowed by water distributing pore realizes mud-water separation, upper layer clear water warp by inclined tube
It receives water branch slot and collects and enter receipts water major trough, be discharged through outlet pipe；Lower layer's sludge settling is scraped, sludge through Travelling Mud Sucker and Scraper suction
It is back to anaerobic zone through sludge reflux channel, the circular treatment for continuing to participate in sewage is mixed with water inlet.
Embodiment 2
As shown in Figures 2 to 4, the utility model provides a kind of AAO biochemical treatment tanks of treated sewage, including integration
It is logical to be provided with flow on partition wall for anaerobic zone 1, anoxic zone 2, low-oxygen aeration area 3 and the settling zone 4 for being arranged and being separated by partition wall
Road；Anaerobic zone 1, anoxic zone 2 and low-oxygen aeration area 3 are disposed adjacent successively, and anaerobic zone 1 is disposed adjacent with low-oxygen aeration area 2；Detest
Oxygen area 1, low-oxygen aeration area 3 are disposed adjacent with settling zone 4；Sludge reflux channel is additionally provided between settling zone 4 and anaerobic zone 1
23。
In the present embodiment, midfeather, cloth waterwall can be wall, or partition board.
The AAO biochemical treatment tanks of treated sewage provided in this embodiment, including the anaerobic zone, anoxic zone, low that is wholely set
Oxygen aeration zone and settling zone, anaerobic zone can be used as anaerobic pond, anoxic zone that can be used as anoxic pond, and low-oxygen aeration area being capable of conduct
Hypoxemia pond, settling zone can be used as sedimentation basin, and anaerobism, anoxic, aerobic, precipitation function are realized in same pond body；It saves simultaneously
Secondary settling tank is omited so that pond body structure simplifies, and takes up an area and the comprehensive method of investment is reduced.
Further, anaerobic zone 1 and anoxic zone 2 are adjacent and be arranged in parallel, and low-oxygen aeration area 3 is set to the one of anaerobic zone 1
Side, the length in low-oxygen aeration area 3 are equal to the length summation of both anaerobic zone 1 and anoxic zone 2；Anaerobic zone 1 is equipped with wastewater inlet
14, wastewater inlet 14 is arranged in anaerobic zone 1 close to the half side of settling zone 2；
Settling zone 4 is adjacent with anaerobic zone 1 and is arranged in parallel, and settling zone 4 is set to one end of anaerobic zone 1, the width of settling zone 4
Width summation of the degree equal to anaerobic zone 1 and low-oxygen aeration area 2.
Further, anaerobic zone 1 is divided by third partition wall 15 for the first anaerobic zone 1A and the second anaerobic zone 1B, the first anaerobism
Area 1A is adjacent with settling zone 4, low-oxygen aeration area 3, and the second anaerobic zone 1B is adjacent with anoxic zone 2, low-oxygen aeration area 3；Third partition wall
Both ends are respectively arranged with water stream channel；Water stream channel between anoxic zone 2 and anaerobic zone 1 is set to the rwo close to wastewater inlet
One end.So set, sewage enters from wastewater inlet in anaerobic zone, recycles, have fully through the first anaerobic zone, the second anaerobic zone
Space carry out denitrification denitrogenation reaction, will not short circuit.
Further, anoxic zone 2 is divided by the 4th partition wall 16 for the first anoxic zone 2A and the second anoxic zone 2B, the first anoxic
Area 2A is adjacent with the second anaerobic zone 1B, and far from low-oxygen aeration area 3；Second anoxic zone 2B and the second anaerobic zone 1B, low-oxygen aeration
Area 3 is adjacent；4th partition wall both ends are respectively arranged with water stream channel；Water stream channel setting between anoxic zone 2 and low-oxygen aeration area 3
In the rwo close to one end of wastewater inlet.The above-mentioned water stream channel referred between anoxic zone and anaerobic zone is set to the rwo and leans on
One end of nearly wastewater inlet, so set, sewage enters anoxic zone from anaerobic zone, it can be through the first anoxic zone, the second anoxic zone
Cycle has sufficient space to carry out anti-nitration reaction, will not short circuit.
Further, low-oxygen aeration area 3 is divided by the 5th partition wall 17 for the first low-oxygen aeration area 3A and the second low-oxygen aeration
Area 3B, the first low-oxygen aeration area 3A is adjacent with anaerobic zone 1, and the second low-oxygen aeration area 3B is far from anaerobic zone 1；First low-oxygen aeration area
3A its water inlet end be provided with air plug-flow area 18 (structure in the air plug-flow area 18 in the present embodiment with embodiment 1 in refer to
Air plug-flow area 12 structure)；Second low-oxygen aeration area 3B is connected with settling zone 4.
In the present embodiment, wastewater inlet 14 is arranged in anaerobic zone 1 close to the half side of settling zone 2；Anoxic zone 2 and anaerobic zone 1
Between water stream channel be set to the rwo one end close to wastewater inlet；Flow between anoxic zone 2 and low-oxygen aeration area 3 is logical
Road is set to the rwo one end close to wastewater inlet.That is, the water inlet of low-oxygen aeration area 3 (alternatively, first low-oxygen aeration area 3A)
End is close to settling zone 4.So set, the abutting end in the second low-oxygen aeration area and settling zone, the second low-oxygen aeration area and precipitation
The partition wall in area is equipped with water stream channel, and sewage recycles in low-oxygen aeration area, has sufficient space to carry out denitrogenation dephosphorizing, degradation
COD connects the second low-oxygen aeration area and settling zone without in addition adding channel.
Further, one end close to settling zone in the first low-oxygen aeration area is arranged in the water inlet in the first low-oxygen aeration area；
Air plug-flow area includes that the water conservancy diversion wall one close to settling zone, the water conservancy diversion wall two opposite with water conservancy diversion wall one and setting are being led
Flow the air impeller between wall one and water conservancy diversion wall two；The top of water conservancy diversion wall one more than liquid level, water conservancy diversion wall one
Bottom end is detached with bottom of pond；The top of water conservancy diversion wall two is in liquid level hereinafter, the bottom end of water conservancy diversion wall two is connected with bottom of pond.Sewage liquid
Face is less than one top of water conservancy diversion wall and is higher than two top of water conservancy diversion wall, and by air impeller in water conservancy diversion wall one and water conservancy diversion
Bubble is generated between wall two, sewage is mixed with bubble so that the sewage density between two walls is less than one outside of water conservancy diversion wall
Sewage density, to which under the action of pressure difference and gas rising bring water flowing, the sewage in the outside of water conservancy diversion wall one can
It is constantly flowed into water conservancy diversion wall one and water conservancy diversion wall two via one bottom of water conservancy diversion wall, under the effect of air tightness difference so that water conservancy diversion
The liquid level of two inside of wall is higher than the liquid level in outside, and prevents liquid level from arbitrarily flowing by water conservancy diversion wall one so that liquid stream is continuous
It is flowed out through two top of water conservancy diversion wall, is not necessarily to water acquisition pump reflux or diving mixer, not only avoids high power consumption, also have
Preferable sewage plug-flow effect.
Further, as shown in Figure 3 and Figure 4, settling zone 4 preferably uses the form of inclined-tube sedimentation tank, 4 top of settling zone to set
The the second effluent trough 4B for having the first effluent trough 4A extended along its length and extending along its width direction, the second effluent trough
4B is centrally located on the length direction of settling zone, is set at left and right sides of the second water outlet trench bottom described in the width direction along settling zone
There are apopore (not shown), the first effluent trough 4A to be connected with the second effluent trough 4B, the second effluent trough 4B goes out far from first
One end of sink 4A is cecum, and the top of the second effluent trough 4B is higher than liquid level；
The both sides of second effluent trough 4B are respectively equipped with water receiving tank 4C, and cecums of the water receiving tank 4C in the second effluent trough 4B is connected
And outlet pipe 19 is connected, the top of water receiving tank 4C is less than liquid level；
Second low-oxygen aeration area 3B is connected with the first effluent trough 4A.
In the present embodiment, the bottom left 20 of the second effluent trough 4B, bottom right 21 are provided with apopore (not shown),
First effluent trough, the second effluent trough are detached with bottom of pond, and sewage enters after the second effluent trough by its bottom left 20, bottom, right
The apopore of side 21 flows into below settling zone, and clear water enters water receiving tank, the bottom of pond of sludge settling to settling zone.
In the present embodiment, anoxic zone 2 is adjacent with low-oxygen aeration area 3, anaerobic zone 1 is spaced between settling zone 4, in anoxic
One end far from wastewater inlet is equipped with axial-flow pump 22 (with what is referred in embodiment 1 on partition wall between area 2 and low-oxygen aeration area 3
Axial-flow pump 13), the part of contaminated water in low-oxygen aeration area is back to by anoxic zone 2 by axial-flow pump, that is, realizes the reflux of nitrification liquid,
Reflux ratio is 1~4, and nitrification liquid reflux can supplement nitrate to anoxic zone 2, and nitrate nitrogen, strengthened denitrification are provided for denitrification denitrogenation
Effect.Embodiment Axial-Flow pump is set up directly on the partition wall between anoxic zone and low-oxygen aeration area, is different from embodiment 1
Axial-flow pump absorbs the sewage between the second low-oxygen aeration area and cloth waterwall, and sewage enters from the second low-oxygen aeration area in the embodiment
When settling zone, the second low-oxygen aeration area is directly connected with the first effluent trough 4A in settling zone.
Further, hose aerator (not shown) is provided in low-oxygen aeration area, so as to low-oxygen aeration area
And 2 be aerated；
And/or online PH meters (not shown) is provided in low-oxygen aeration area, with to mixed liquor in low-oxygen aeration area
PH value is monitored on-line；
And/or online dissolved oxygen meter (not shown) is provided in low-oxygen aeration area, online dissolved oxygen meter is connected with control system
System, the dissolved oxygen in low-oxygen aeration area is monitored on-line and be controlled.
In the present embodiment, the aerator, pushing flow mixer, suction mud scraper and air impeller are the prior art
In commonly used equipment, its structure is repeated no more at this.
The AAO biochemical treatment tanks of treated sewage provided in this embodiment include for the process of treated sewage：Sewage passes through
The water inlet pipe of connection wastewater inlet enters anaerobic zone 1, realizes denitrification denitrogenation, while the anaerobism in anaerobic pond under anaerobic
It is that follow-up sewage disposal lightens the load that bacterium can be reacted by hydrolysis acidification.
Then, sewage enters anoxic zone 2 under the action of training wall, and being substantially carried out anti-nitration reaction under anoxic conditions will
Nitrate reduction is that nitrogen is removed from sewage, and thermophilic phosphorus bacterium anoxic releases phosphorus.The sewage part for flowing through anoxic zone 2 enters hypoxemia exposure
Gas area 3, it is most of to continue to recycle in anoxic zone 2.
Into the sewage in low-oxygen aeration area 3 micro- life is utilized by controlling the dissolved oxygen in aeration tank (being less than 0.5mg/L)
Object completes the degradation to pollutants such as COD, ammonia nitrogen, total nitrogens, meanwhile, thermophilic phosphorus bacterium provides energy using carbon source organic matter in low-oxygen environment
Amount realizes increasing rapidly and breeding for cell, by H from external environment3PO4Intake is internal, and a large amount of phosphorus are absorbed under low-oxygen environment,
Anoxic zone 2, the low-oxygen aeration area 3 being arranged by pond body create being circulated throughout for a good anoxic-hypoxemia-precipitation discharge
Journey, by the phosphorus in sewage with mud discharging.
Effluent cycle is realized by air plug-flow area in low-oxygen aeration area 3, in low-oxygen aeration area end (i.e. the second hypoxemia
Aeration zone) a part of sewage continues cycling through the process of repetition denitrogenation dephosphorizing, the COD that degrades；Another part sewage through the first effluent trough,
Second effluent trough flows into settling zone, and mud-water separation, outlet pipe of the upper layer clear water through effluent trough, connection effluent trough are realized by inclined tube
Discharge；Lower layer's sludge settling is scraped through Travelling Mud Sucker and Scraper suction, and sludge is back to anaerobic zone through sludge reflux channel, with water inlet
Mixing continues to participate in the circular treatment of sewage.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that utility model range involved in the application, however it is not limited to made of the specific combination of above-mentioned technical characteristic
Technical solution, while should also cover in the case where not departing from utility model design, by above-mentioned technical characteristic or its be equal
Feature carries out other technical solutions of arbitrary combination and formation.Such as features described above has with (but not limited to) disclosed herein
The technical solution for thering is the technical characteristic of similar functions to be replaced mutually and being formed.
Claims (16)
1. a kind of AAO biochemical treatment tanks of treated sewage, which is characterized in that including the anaerobic zone, anoxic zone, hypoxemia being wholely set
Aeration zone and settling zone, during the anaerobic zone, the anoxic zone and the low-oxygen aeration area are disposed adjacent and pass through respectively successively
Division wall separates, and water stream channel is provided on the midfeather；The anaerobic zone, the anoxic zone, the low-oxygen aeration area
It is disposed adjacent with the settling zone, the anaerobic zone, the anoxic zone, the low-oxygen aeration area are adjacent with the settling zone
End is provided with cloth waterwall, and the water distributing pore for being connected to the low-oxygen aeration area and the settling zone is provided on the cloth waterwall；It is described heavy
Sludge reflux channel is additionally provided between shallow lake area and the anaerobic zone.
2. the AAO biochemical treatment tanks of treated sewage according to claim 1, which is characterized in that the anaerobic zone, it is described lack
Oxygen area, the low-oxygen aeration area is adjacent successively and is arranged in parallel, and the settling zone is set to the one end in the low-oxygen aeration area, institute
The width for stating settling zone is equal to the width summation of the anaerobic zone, the anoxic zone and the low-oxygen aeration area three；
The anaerobic zone is equipped with wastewater inlet, and half far from the settling zone in the anaerobic zone is arranged in the wastewater inlet
Side, the water stream channel between the anaerobic zone and the anoxic zone are set to the rwo one end far from the wastewater inlet.
3. the AAO biochemical treatment tanks of treated sewage according to claim 2, which is characterized in that the anoxic zone passes through
One partition wall is divided into the first anoxic zone and the second anoxic zone, and first anoxic zone is adjacent with the anaerobic zone, and far from described low
Oxygen aeration zone；Second anoxic zone is adjacent with the low-oxygen aeration area, and far from the anaerobic zone；First partition wall both ends
It is respectively arranged with water stream channel；Water stream channel between the anoxic zone and the low-oxygen aeration area is set to the rwo far from institute
State one end of wastewater inlet；Water stream channel and the anoxic zone between the anaerobic zone and the anoxic zone are exposed with the hypoxemia
Water stream channel between gas area is right against first partition wall.
4. the AAO biochemical treatment tanks of treated sewage according to claim 3, which is characterized in that set in the anaerobic zone
There is pushing flow mixer；
The one end at least in first anoxic zone far from the wastewater inlet and close in second anoxic zone and/or
One end of the wastewater inlet is both provided with pushing flow mixer.
5. the AAO biochemical treatment tanks of treated sewage according to claim 2, which is characterized in that the low-oxygen aeration area is logical
It crosses the second partition wall and is divided into the first low-oxygen aeration area and the second low-oxygen aeration area, first low-oxygen aeration area and the anoxic zone phase
Neighbour, second low-oxygen aeration area is far from the anoxic zone；First low-oxygen aeration area is provided with air in its water inlet end and pushes away
Flow area；Second low-oxygen aeration area is connected by the water distributing pore with the settling zone.
6. the AAO biochemical treatment tanks of treated sewage according to claim 5, which is characterized in that first low-oxygen aeration
One end close to the settling zone in first low-oxygen aeration area is arranged in the water inlet in area；Air plug-flow area includes close
The water conservancy diversion wall one of the settling zone, the water conservancy diversion wall two opposite with the water conservancy diversion wall one and setting are in the water conservancy diversion wall
Air impeller between one and the water conservancy diversion wall two；The top of the water conservancy diversion wall one is more than liquid level, the training wall
The bottom end of body one is detached with bottom of pond；The top of the water conservancy diversion wall two is in liquid level hereinafter, the bottom end and pond of the water conservancy diversion wall two
Bottom is connected.
7. the AAO biochemical treatment tanks of treated sewage according to claim 1, which is characterized in that the lower section of the settling zone
It is provided with suction mud scraper, the sludge outlet for inhaling mud scraper is connected with sludge reflux channel, is provided with above the settling zone
It is discharged major trough, one end of the water outlet major trough extends to outside pond；It is respectively arranged with and multiple connects with it along the water outlet major trough both sides
Lead to and to the water outlet branch slot that both sides extend, length direction of the water outlet branch slot along the settling zone is arranged.
8. the AAO biochemical treatment tanks of treated sewage according to claim 1, which is characterized in that in the low-oxygen aeration area
It is provided with hose aerator；
And/or online PH meters are provided in the low-oxygen aeration area；
And/or online dissolved oxygen meter is provided in the low-oxygen aeration area, the online dissolved oxygen meter is connected with control system.
9. a kind of AAO biochemical treatment tanks of treated sewage, which is characterized in that detest including integrated setting and by what partition wall separated
Oxygen area, anoxic zone, low-oxygen aeration area and settling zone are provided with water stream channel on the partition wall；The anaerobic zone, the anoxic zone
It is disposed adjacent successively with the low-oxygen aeration area, and the anaerobic zone is disposed adjacent with the low-oxygen aeration area；The anaerobic zone,
The low-oxygen aeration area is disposed adjacent with the settling zone；Sludge is additionally provided between the settling zone and the anaerobic zone to return
Circulation road.
10. AAO biochemical treatment tanks according to claim 9, which is characterized in that the anaerobic zone and the anoxic zone are adjacent
And be arranged in parallel, the low-oxygen aeration area is set to the side of the anaerobic zone, and the length in the low-oxygen aeration area is equal to described
The length summation of both anaerobic zone and the anoxic zone；The anaerobic zone is equipped with wastewater inlet, and the wastewater inlet setting exists
The anaerobic zone is half side close to the settling zone；
The settling zone is adjacent with the anaerobic zone and is arranged in parallel, and the settling zone is set to one end of the anaerobic zone, institute
The width for stating settling zone is equal to the width summation of the anaerobic zone and the low-oxygen aeration area.
11. AAO biochemical treatment tanks according to claim 10, which is characterized in that the anaerobic zone passes through third partition wall point
For the first anaerobic zone and the second anaerobic zone, first anaerobic zone is adjacent with the settling zone, the low-oxygen aeration area, and described
Two anaerobic zones are adjacent with the anoxic zone, the low-oxygen aeration area；Third partition wall both ends are respectively arranged with water stream channel；
Water stream channel between the anoxic zone and the anaerobic zone is set to the rwo close to one end of the wastewater inlet.
12. AAO biochemical treatment tanks according to claim 11, which is characterized in that the anoxic zone passes through the 4th partition wall point
For the first anoxic zone and the second anoxic zone, first anoxic zone is adjacent with second anoxic zone, and is exposed far from the hypoxemia
Gas area；Second anoxic zone is adjacent with second anaerobic zone, the low-oxygen aeration area；The 4th partition wall both ends are set respectively
It is equipped with water stream channel；
Water stream channel between the anoxic zone and the low-oxygen aeration area is set to the rwo close to the one of the wastewater inlet
End.
13. AAO biochemical treatment tanks according to claim 10, which is characterized in that the low-oxygen aeration area by the 5th every
Wall is divided into the first low-oxygen aeration area and the second low-oxygen aeration area, and first low-oxygen aeration area is adjacent with the anaerobic zone, described
Second low-oxygen aeration area is far from the anaerobic zone；First low-oxygen aeration area is provided with air plug-flow area in its water inlet end；Institute
The second low-oxygen aeration area is stated with the settling zone to be connected.
14. AAO biochemical treatment tanks according to claim 13, which is characterized in that the water inlet in first low-oxygen aeration area
One end in first low-oxygen aeration area close to the settling zone is arranged in mouth；Air plug-flow area includes close to the precipitation
The water conservancy diversion wall one in area, the water conservancy diversion wall two opposite with the water conservancy diversion wall one and setting are in the water conservancy diversion wall one and described
Air impeller between water conservancy diversion wall two；The top of the water conservancy diversion wall one is more than liquid level, the bottom of the water conservancy diversion wall one
End is detached with bottom of pond；The top of the water conservancy diversion wall two is in liquid level hereinafter, the bottom end of the water conservancy diversion wall two is connected with bottom of pond.
15. AAO biochemical treatment tanks according to claim 13, which is characterized in that
The first effluent trough extended along its length and extend along its width direction second is equipped with above the settling zone
Effluent trough, second effluent trough are centrally located on the length direction of the settling zone, the width direction along the settling zone
It is equipped with apopore at left and right sides of the second water outlet trench bottom, first effluent trough is connected with the second effluent trough, and described the
The one end of two effluent troughs far from first effluent trough is cecum, and the top of second effluent trough is higher than liquid level；
The both sides of second effluent trough are respectively equipped with water receiving tank, and the water receiving tank is connected in the cecum of second effluent trough
And outlet pipe is connected, the top of the water receiving tank is less than liquid level；
Second low-oxygen aeration area is connected with first effluent trough.
16. AAO biochemical treatment tanks according to claim 9, which is characterized in that
It is provided with hose aerator in the low-oxygen aeration area；And/or
Online PH meters are provided in the low-oxygen aeration area；And/or
Online dissolved oxygen meter is provided in the low-oxygen aeration area, the online dissolved oxygen meter is connected with control system.
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| CN201720910401.XU CN207986809U (en) | 2017-07-25 | 2017-07-25 | The AAO biochemical treatment tanks of treated sewage |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109516571A (en) * | 2018-12-27 | 2019-03-26 | 中冶焦耐(大连)工程技术有限公司 | Efficient fixed-biofilm-free coking wastewater denitrification process and device |
| CN110615530A (en) * | 2019-09-05 | 2019-12-27 | 中国市政工程中南设计研究总院有限公司 | High-efficiency energy-saving multi-mode enhanced denitrification sewage treatment system |
| CN110981108A (en) * | 2019-12-25 | 2020-04-10 | 广东慧信环保有限公司 | Improved generation A2System of O process system and sewage treatment method |
| CN115465953A (en) * | 2022-10-19 | 2022-12-13 | 大连安能杰科技有限公司 | AOD biochemical reaction system for treating sewage and sewage treatment method thereof |
-
2017
- 2017-07-25 CN CN201720910401.XU patent/CN207986809U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109516571A (en) * | 2018-12-27 | 2019-03-26 | 中冶焦耐(大连)工程技术有限公司 | Efficient fixed-biofilm-free coking wastewater denitrification process and device |
| CN110615530A (en) * | 2019-09-05 | 2019-12-27 | 中国市政工程中南设计研究总院有限公司 | High-efficiency energy-saving multi-mode enhanced denitrification sewage treatment system |
| CN110615530B (en) * | 2019-09-05 | 2024-03-12 | 中国市政工程中南设计研究总院有限公司 | High-efficiency energy-saving multi-mode enhanced denitrification sewage treatment system |
| CN110981108A (en) * | 2019-12-25 | 2020-04-10 | 广东慧信环保有限公司 | Improved generation A2System of O process system and sewage treatment method |
| CN115465953A (en) * | 2022-10-19 | 2022-12-13 | 大连安能杰科技有限公司 | AOD biochemical reaction system for treating sewage and sewage treatment method thereof |
| CN115465953B (en) * | 2022-10-19 | 2023-09-22 | 大连安能杰科技有限公司 | AOD biochemical reaction system for treating sewage and sewage treatment method thereof |
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