CN220597198U - A, A 2 O sewage treatment device - Google Patents
A, A 2 O sewage treatment device Download PDFInfo
- Publication number
- CN220597198U CN220597198U CN202321946250.5U CN202321946250U CN220597198U CN 220597198 U CN220597198 U CN 220597198U CN 202321946250 U CN202321946250 U CN 202321946250U CN 220597198 U CN220597198 U CN 220597198U
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- water inlet
- anoxic
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- 239000010865 sewage Substances 0.000 title claims abstract description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 132
- 239000010802 sludge Substances 0.000 claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- 239000002351 wastewater Substances 0.000 claims abstract description 3
- 238000005273 aeration Methods 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 12
- 238000010992 reflux Methods 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 244000005700 microbiome Species 0.000 description 8
- 238000001556 precipitation Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 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
- 230000009471 action Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses A 2 O sewage treatment plant relates to sewage treatment equipment technical field, a A 2 An O sewage treatment apparatus comprising: an anaerobic zone for anaerobic reaction of the wastewater; the anaerobic zone is communicated with the anoxic zone so as to send the sewage after the anaerobic reaction into the anoxic zone; the aerobic zone is used for carrying out aerobic reaction on sewage, and the anoxic zone is communicated with the aerobic zone so as to send the sewage after the anoxic reaction into the aerobic zone; a mud-water separator arranged in the aerobic zone and capable of separating sewage flowing into the mud-water separator and refluxing the separated sludge to the aerobic zoneA zone for discharging separated sewage; the sludge zone is communicated with the aerobic zone, so that the sludge in the aerobic zone is discharged into the sludge zone, higher reaction efficiency and higher solid-liquid separation efficiency can be realized, and the water outlet effect is better.
Description
Technical Field
The utility model relates to the technical field of sewage treatment equipment, in particular to A 2 O sewage treatment plant.
Background
Under the background of limited environment capacity and insufficient environment bearing capacity, rural domestic sewage treatment has the defects of large fluctuation of water quality and water quantity, large operation and maintenance difficulty and unstable effluent quality. In recent years, various technical improvements are continuously tried, including arrangement forms, sludge backflow improvement, backflow ratio and the like, but the effects are not ideal.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a 2 O sewage treatment plant, in tradition A 2 The O process is improved, so that higher reaction efficiency and higher solid-liquid separation efficiency can be realized, and the water outlet effect is better.
A according to an embodiment of the utility model 2 An O sewage treatment apparatus comprising:
an anaerobic zone for anaerobic reaction of the wastewater;
the anaerobic zone is communicated with the anoxic zone so as to send the sewage after the anaerobic reaction into the anoxic zone;
the aerobic zone is used for carrying out aerobic reaction on sewage, and the anoxic zone is communicated with the aerobic zone so as to send the sewage after the anoxic reaction into the aerobic zone;
the mud-water separator is arranged in the aerobic zone, can separate sewage flowing into the mud-water separator, and returns separated sludge to the aerobic zone to discharge the separated sewage;
the aerobic zone is communicated with the sludge zone so as to discharge the sludge in the aerobic zone into the sludge zone.
A according to an embodiment of the utility model 2 The O sewage treatment device has at least the following beneficial effects: after passing through the anaerobic zone and the anoxic zone in sequence, sewage flows into the aerobic zone, sewage in the aerobic zone flows into the mud-water separator, sludge and sewage are separated in the mud-water separator, high-concentration sludge is trapped in the aerobic zone, and separated water is collected into a water outlet channel through a sewage collecting pipeline and is discharged to a clear water zone from the water outlet channel. After the high-concentration sludge is trapped in the aerobic zone, the aerobic reaction is continued again. The sewage and the activated sludge in the aerobic zone are fully mixed to achieve the effect of efficiently removing pollutants, and meanwhile, the dissolved oxygen efficiency can be improved, and the aeration energy consumption can be reduced. Meanwhile, the independent sedimentation area is not needed, and the occupied area can be effectively reduced. The reaction and the precipitation are coupled, and the integration of reaction, precipitation and separation is realized. The separated sludge enters an aerobic zone, and finally the sludge is discharged into a sludge zone from the aerobic zone.
According to some embodiments of the utility model, the anaerobic zone comprises a plurality of anaerobic cells, wherein the anaerobic cells adopt a vertical flow labyrinth structure and are connected in series by a downward flow interval and an upward flow interval.
According to some embodiments of the utility model, the anoxic zone comprises a plurality of anoxic unit cells, wherein the anoxic unit cells adopt a vertical flow labyrinth structure and are connected in series through downward flow and upward flow intervals.
According to some embodiments of the utility model, the anaerobic treatment system further comprises a first backflow system, wherein the first backflow system is communicated with the water outlet end of the anoxic zone and the water inlet end of the anaerobic zone, and can backflow sewage at the water outlet end of the anoxic zone to the water inlet end of the anaerobic zone.
According to some embodiments of the utility model, the mud-water separator comprises a water inlet bucket, a flow guiding structure, a water collecting tank and a sewage collecting pipeline, wherein the water inlet bucket is arranged in the aerobic zone, the water inlet bucket is provided with a water inlet with an upward opening, the bottom of the water inlet bucket is provided with a mud outlet, the flow guiding structure is arranged at the water inlet, a water inlet channel is formed between the flow guiding structure and the water inlet, the outlet of the water inlet channel faces downwards, the water collecting tank is provided with a water inlet notch, the water inlet notch is arranged in the water inlet bucket and is arranged at the upper part of the water inlet bucket, and the sewage collecting pipeline is communicated with the water collecting tank and the outside of the aerobic zone.
According to some embodiments of the utility model, the flow guiding structure is a cylinder, the cylinder is vertically arranged in the water inlet, and the water inlet channel is formed between the outer wall of the cylinder and the inner wall of the water inlet bucket.
According to some embodiments of the utility model, the aerobic zone is provided with an aeration device, the aeration device is arranged at the bottom of the aerobic zone, and an aeration opening of the aeration device faces the mud outlet.
According to some embodiments of the utility model, the aerobic zone is provided with a plurality of the mud-water separators.
According to some embodiments of the utility model, the anaerobic treatment system further comprises a second backflow system, wherein the second backflow system is communicated with the aerobic zone and the water inlet end of the anoxic zone, and can backflow sludge in the aerobic zone to the water inlet end of the anoxic zone.
According to some embodiments of the utility model, the system further comprises a clean water section, wherein the sludge-water separator is configured to separate the sewage to the clean water section.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 shows an embodiment of the utility model A 2 A flow diagram of the O sewage treatment device;
FIG. 2 is a diagram of an embodiment of the present utility model 2 A structural plan schematic diagram of the O sewage treatment device;
fig. 3 is an enlarged partial schematic view of fig. 1.
Reference numerals:
an anaerobic zone 100; anaerobic unit cell 110;
an anoxic zone 200; anoxic unit cell 210;
an aerobic zone 300;
a mud-water separator 400; a water inlet bucket 410; a water inlet 411; a mud outlet 412; a flow guiding structure 420; a water collection tank 430; a water inlet passage 440;
a sludge zone 500;
a first reflow system 600;
an aeration device 700;
a second reflow system 800;
clear water zone 900.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to FIGS. 1 and 2, the present utility model discloses A 2 An O sewage treatment apparatus comprising:
an anaerobic zone 100 for anaerobic reaction of sewage;
the anaerobic zone 200 is used for carrying out anaerobic reaction on the sewage, and the anaerobic zone 100 is communicated with the anaerobic zone 200 so as to send the sewage after the anaerobic reaction into the anaerobic zone 200;
the aerobic zone 300 is used for carrying out aerobic reaction on sewage, and the anoxic zone 200 is communicated with the aerobic zone 300 so as to send the sewage after the anoxic reaction into the aerobic zone 300;
the mud-water separator 400 is arranged in the aerobic zone 300, and can separate sewage flowing into the mud-water separator 400, and return the separated sludge to the aerobic zone 300, and discharge the separated sewage;
the sludge zone 500, the aerobic zone 300 communicates with the sludge zone 500 to discharge sludge of the aerobic zone 300 into the sludge zone 500.
In this embodiment, sewage to be treated is fed into the anaerobic zone 100, and an anaerobic reaction is performed in the anaerobic zone 100, and in an anaerobic state, organic matters in the sewage are decomposed, metabolized and digested by anaerobic bacteria, so that the organic matter content in the sewage is greatly reduced.
After the anaerobic reaction, the sewage flows into the anoxic zone 200, and in the anoxic zone 200, the effect of removing nitrate nitrogen is achieved by the reaction of microorganisms with the sewage, and at the same time, part of BOD is removed.
After the anoxic reaction, the sewage flows into the aerobic zone 300, where the microorganisms perform the nitrification reaction and the phosphorus absorption reaction while the organic matter is degraded.
The sewage in the aerobic zone 300 flows into the mud-water separator 400, the mud-water separator 400 separates the sludge from the sewage, the high-concentration sludge is trapped in the aerobic zone 300, and the separated water is discharged outside the aerobic zone 300. After the high concentration sludge is trapped in the aerobic zone 300, the aerobic reaction is continued again. The sludge concentration in the aerobic zone 300 is greatly improved, so that the sludge and the activated sludge in the aerobic zone 300 are fully mixed to achieve the effect of efficiently removing pollutants, and meanwhile, the dissolved oxygen efficiency is improved, and the aeration energy consumption is reduced.
Meanwhile, the arrangement of the mud-water separator 400 can achieve the effect that a precipitation area is not required to be arranged independently, and the occupied area can be effectively reduced. Through reaction and precipitation coupling, the integration of reaction, precipitation and separation is realized. The treated sludge is settled at the bottom of the aerobic zone 300 and is finally fed into the sludge zone 500.
Referring to fig. 1 and 2, in some embodiments of the present utility model, the anaerobic zone 100 includes a plurality of anaerobic cells 110, the anaerobic cells 110 being in a vertical flow labyrinth configuration and being connected in series by a downstream and upstream gap.
In this embodiment, in the anaerobic unit cell 110 of the upward flow, since the upward flow of sewage forms a suspended sludge bed, a small portion of sludge enters the anaerobic unit cell 110 of the next downward flow along with the water flow, and most of sludge stays in the anaerobic unit cell 110 due to the action of gravity, so that the structure maintains a high sludge concentration in the anaerobic zone 100, and the reaction efficiency of the unit cell volume is greatly improved.
Meanwhile, the structure prolongs the flow of the anaerobic zone 100 to the maximum extent under the condition of the same tank capacity, not only avoids the short flow of sewage in the reaction tank, but also ensures that the sewage is fully contacted and mixed with microorganisms, prolongs the effective reaction time, and greatly improves the sewage treatment efficiency and the shock resistance.
Referring to fig. 1 and 2, in some embodiments of the present utility model, the anoxic zone 200 includes a plurality of anoxic cells 210, and the anoxic cells 210 are connected in series by a downward flow and an upward flow interval in a vertical flow labyrinth structure.
In this embodiment, in the anoxic unit cell 210 that flows upward, since the sewage that flows upward forms a suspended sludge bed, a small portion of the sludge enters the anoxic unit cell 210 that flows downward next, and a large portion of the sludge remains in the anoxic unit cell 210 due to gravity, so that the structure maintains a high sludge concentration in the anoxic zone 200, and the reaction efficiency per unit cell volume is greatly improved.
Meanwhile, the structure prolongs the flow of the anoxic zone 200 to the maximum extent under the condition of the same tank capacity, not only avoids the short flow of sewage in the reaction tank, but also ensures that the sewage is fully contacted and mixed with microorganisms, prolongs the effective reaction time, and greatly improves the sewage treatment efficiency and the impact resistance.
Referring to fig. 1 and 2, in some embodiments of the present utility model, a first backflow system 600 is further included, where the first backflow system 600 communicates with the water outlet end of the anoxic zone 200 and the water inlet end of the anaerobic zone 100, and is capable of backflow of sewage at the water outlet end of the anoxic zone 200 to the water inlet end of the anaerobic zone 100.
It will be appreciated that in conventional A 2 In the O sewage treatment system, a reflux system is generally adopted, and the reflux system is communicated with the tail end of the aerobic zone to the front end of the anoxic zone. The reflux mode can cause nitrate generated after aerobic reaction to enter the anaerobic zone 100, destroy the anaerobic state of the anaerobic zone 100 and influence the dephosphorization rate of the system.
Based on this, in this embodiment, the sewage at the water outlet end of the anoxic zone 200 is returned to the water inlet end of the anaerobic zone 100, and since the mixed solution returned from the anoxic zone 200 to the anaerobic zone 100 contains more soluble BOD and less nitrate, an optimal condition is provided for the hydrolysis reaction of the organic matters performed in the anaerobic zone 100, and the nitrate nitrogen is prevented from entering the anaerobic zone 100, and the anaerobic state of the anaerobic zone 100 is destroyed to affect the dephosphorization rate of the system.
Referring to fig. 1 and 3, in some embodiments of the present utility model, the mud-water separator 400 includes a water inlet bucket 410, a guide structure 420, a water collecting tank 430, and a sewage collecting pipe, the water inlet bucket 410 is disposed in the aerobic zone 300, the water inlet bucket 410 is provided with a water inlet 411 having an upward opening, a mud outlet 412 is provided at the bottom of the water inlet bucket 410, the guide structure 420 is disposed at the water inlet 411, a water inlet channel 440 is formed between the guide structure 420 and the water inlet 411, an outlet of the water inlet channel 440 is downward, the water collecting tank 430 is provided with a water inlet notch, the water inlet notch is disposed in the water inlet bucket 410 and is disposed at an upper portion of the water inlet bucket 410, and the sewage collecting pipe communicates the water collecting tank 430 with the outside of the aerobic zone 300.
In this embodiment, the water inlet bucket 410 is disposed in the aerobic zone 300, and when sewage in the aerobic zone 300 overflows the water inlet 411, the sewage enters the water inlet bucket 410 along the water inlet channel 440. The sludge is precipitated at the bottom of the water inlet hopper 410 under the action of gravity and flows back to the aerobic zone 300 from the sludge outlet 412, so that the aerobic zone 300 obtains high-concentration sludge. The sewage after mud-water separation in the water inlet bucket 410 is collected by each water collecting tank 430 in the water collecting tank 430, and the collected sewage is discharged outside the aerobic zone 300 through the sewage collecting pipe.
Referring to fig. 1 and 3, in some embodiments of the present utility model, the flow guiding structure 420 is a cylinder vertically disposed within the water inlet 411.
In this embodiment, when sewage in the aerobic zone 300 overflows the water inlet 411, the sewage enters the water inlet hopper 410 along the water inlet channel 440, and the outlet of the water inlet channel 440 is downward, so that sludge is convenient to sink downwards.
Wherein, the reflux ratio from the mud outlet 412 at the bottom of the water inlet hopper 410 to the aerobic zone 300 is 200%. In the aerobic zone 300, the activated sludge is basically in a low-load fully mixed reaction zone, the microorganisms are in a lower-activity state, and the microorganisms gradually enter an endogenous respiration state after entering the sludge zone 500, so that the sludge is partially digested. The sludge mixing effect is better, and the microorganism and the pollutant react more thoroughly.
Referring to fig. 1 and 3, in some embodiments of the present utility model, an aerobic zone 300 is provided with an aeration device 700, the aeration device 700 being disposed at the bottom of the aerobic zone 300, and an aeration port of the aeration device 700 being directed toward a sludge outlet 412.
In this embodiment, the aeration device 700 of the aerobic zone 300 is disposed at the bottom of the aerobic zone 300, and by matching the aeration device 700 and the aeration device, the circulation of the mixed liquid is realized by using the air lifting power, so as to enhance the mass transfer, fully mix the sewage with the activated sludge in the aerobic zone 300, achieve the effect of efficiently removing pollutants, and simultaneously improve the dissolved oxygen efficiency and reduce the aeration energy consumption.
Wherein, the bottom of the sludge zone 500 is also provided with an aeration device 700, which can prevent anaerobic phosphorus release from occurring at the bottom of the sludge zone 500 due to lack of oxygen.
Referring to fig. 1 and 3, in some embodiments of the present utility model, the aerobic zone 300 is provided with a plurality of mud-water separators 400. Can improve the sewage treatment efficiency.
Referring to fig. 1, in some embodiments of the present utility model, a second backflow system 800 is further included, and the second backflow system 800 communicates with the water inlet ends of the aerobic zone 300 and the anoxic zone 200, and is capable of backflow of sludge from the aerobic zone 300 to the water inlet ends of the anoxic zone 200.
In this embodiment, a part of sludge in the aerobic zone 300 flows back to the water inlet end of the anoxic zone 200, and after entering the anoxic zone 200, the activity of the sludge is re-excited, so that the organic matter removal effect is better, and meanwhile, the sludge reduction is realized by the microorganism through self metabolism. Wherein, the reflux ratio of the reflux of the aerobic zone 300 to the anoxic zone 200 is 400%.
Referring to fig. 1, in some embodiments of the present utility model, a clear water zone 900 is further included, and the mud-water separator 400 transfers separated sewage to the clear water zone 900, and is discharged to the outside from the clear water zone 900.
Specifically, the sewage separated by the mud-water separator 400 may be directly discharged into the clean water area 900 through a sewage collecting pipeline, or may be collected in the clean water channel 1000 first and then pumped into the clean water area 900 through a pipeline.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (10)
1. A, A 2 O sewage treatment plant, its characterized in that includes:
an anaerobic zone for anaerobic reaction of the wastewater;
the anaerobic zone is communicated with the anoxic zone so as to send the sewage after the anaerobic reaction into the anoxic zone;
the aerobic zone is used for carrying out aerobic reaction on sewage, and the anoxic zone is communicated with the aerobic zone so as to send the sewage after the anoxic reaction into the aerobic zone;
the mud-water separator is arranged in the aerobic zone, can separate sewage flowing into the mud-water separator, and returns separated sludge to the aerobic zone to discharge the separated sewage;
the aerobic zone is communicated with the sludge zone so as to discharge the sludge in the aerobic zone into the sludge zone.
2. A according to claim 1 2 O sewage treatment plant, its characterized in that: the anaerobic zone comprises a plurality of anaerobic cells, wherein vertical flow labyrinth structures are adopted among the anaerobic cells, and the anaerobic cells are connected in series through downward flow and upward flow intervals.
3. A according to claim 1 2 O sewage treatment plant, its characterized in that: the anoxic zone comprises a plurality of anoxic unit cells, wherein vertical flow labyrinth structures are adopted among the anoxic unit cells, and the anoxic unit cells are connected in series through downward flow and upward flow intervals.
4. A according to claim 1 2 O sewage treatment plant, its characterized in that: the anaerobic treatment device further comprises a first backflow system, wherein the first backflow system is communicated with the water outlet end of the anoxic zone and the water inlet end of the anaerobic zone, and can backflow sewage at the water outlet end of the anoxic zone to the water inlet end of the anaerobic zone.
5. A according to claim 1 2 O sewage treatment plant, its characterized in that: the mud-water separator comprises a water inlet bucket, a flow guiding structure, a water collecting tank and a sewage collecting pipeline, wherein the water inlet bucket is arranged in the aerobic zone, the water inlet bucket is provided with a water inlet with an upward opening, the bottom of the water inlet bucket is provided with a mud outlet, the flow guiding structure is arranged at the water inlet, and the flow guiding structure is used for guiding waterThe structure with be formed with the passageway of intaking between the water inlet, the export of passageway of intaking is down, the water catch bowl is equipped with the notch that intakes, the notch setting of intaking is in the intake bucket, and set up the upper portion of intake bucket, sewage collection pipeline intercommunication in the water catch bowl with the good oxygen district outside.
6. A according to claim 5 2 O sewage treatment plant, its characterized in that: the guide structure is a cylinder, the cylinder is vertically arranged in the water inlet, and a water inlet channel is formed between the outer wall of the cylinder and the inner wall of the water inlet bucket.
7. A according to claim 5 2 O sewage treatment plant, its characterized in that: the aerobic zone is provided with an aeration device, the aeration device is arranged at the bottom of the aerobic zone, and an aeration port of the aeration device faces the mud outlet.
8. A according to claim 5 2 O sewage treatment plant, its characterized in that: the aerobic zone is provided with a plurality of mud-water separators.
9. A according to claim 1 2 O sewage treatment plant, its characterized in that: the anaerobic treatment device further comprises a second backflow system, wherein the second backflow system is communicated with the aerobic zone and the water inlet end of the anoxic zone, and can backflow sludge in the aerobic zone to the water inlet end of the anoxic zone.
10. A according to claim 1 2 O sewage treatment plant, its characterized in that: the sewage treatment system also comprises a clear water area, and the mud-water separator is used for separating sewage into the clear water area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321946250.5U CN220597198U (en) | 2023-07-21 | 2023-07-21 | A, A 2 O sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321946250.5U CN220597198U (en) | 2023-07-21 | 2023-07-21 | A, A 2 O sewage treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220597198U true CN220597198U (en) | 2024-03-15 |
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| CN202321946250.5U Active CN220597198U (en) | 2023-07-21 | 2023-07-21 | A, A 2 O sewage treatment device |
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| Country | Link |
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| CN (1) | CN220597198U (en) |
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- 2023-07-21 CN CN202321946250.5U patent/CN220597198U/en active Active
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