CN117285161B - Oxidation ditch sewage treatment device - Google Patents
Oxidation ditch sewage treatment device Download PDFInfo
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- CN117285161B CN117285161B CN202311584082.4A CN202311584082A CN117285161B CN 117285161 B CN117285161 B CN 117285161B CN 202311584082 A CN202311584082 A CN 202311584082A CN 117285161 B CN117285161 B CN 117285161B
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- 239000010865 sewage Substances 0.000 title claims abstract description 118
- 230000003647 oxidation Effects 0.000 title claims abstract description 27
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 27
- 239000010802 sludge Substances 0.000 claims abstract description 46
- 238000004062 sedimentation Methods 0.000 claims abstract description 40
- 238000010992 reflux Methods 0.000 claims abstract description 18
- 238000005273 aeration Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 230000002950 deficient Effects 0.000 claims 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/006—Regulation methods for biological treatment
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses an oxidation ditch sewage treatment device, which comprises a sewage treatment tank, wherein an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone are arranged in the sewage treatment tank, an aeration device is arranged at the bottom of the aerobic zone, the lower part of the sedimentation zone is communicated with the aerobic zone, a sludge reflux structure for refluxing part of sludge precipitated in the zone into the anaerobic zone is arranged at the lower part of the sedimentation zone, a mixing device is also arranged in the anaerobic zone, a first impeller is arranged in the aerobic zone, the aerobic zone is also provided with a check door component which can be pushed away by sewage when the sewage is larger than a preset value and can be automatically closed when the sewage amount is smaller than the preset value, and when the sewage amount is smaller than the preset value, the check door component is closed to limit the circulation of the sewage in the aerobic zone, so that the sewage flows into the sedimentation zone is quickened, and the aerobic treatment efficiency is improved; when the sewage quantity is larger than a preset value, the sewage can wash the check door assembly open to circulate in the aerobic zone, so that the sewage fully performs an aerobic reaction.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an oxidation ditch sewage treatment device.
Background
At present, the general method for dephosphorizing and denitrifying in the biological treatment of sewage comprises the following steps: in the process of A-A-O, common structures comprise an anaerobic-anoxic-aerobic square pool structure, various oxidation ditch structures and the like, and a sedimentation tank and a sludge reflux well are added after the structures are needed, so that the floor area is large, the sludge reflux ratio is difficult to control, the sludge at the bottom of the sedimentation tank is easy to deposit and anaerobic, a floating sludge phenomenon occurs, and the sludge leakage or the sludge loss phenomenon occurs when the sludge at the bottom of the sedimentation tank is too much, thereby influencing the sewage treatment effect. In the aerobic zone, when the sewage inflow is small, the sewage is excessively circulated in the aerobic zone, and electric energy is wasted.
For example, patent application number 202120925745.4, patent literature with a sewage treatment device without pump in oxidation ditch, discloses a sewage treatment device, which comprises a treatment tank and a water inlet pipe, wherein an anoxic zone, an anaerobic zone and an aerobic zone are arranged in the treatment tank, and a water outlet of the water inlet pipe is arranged at the anoxic zone and the anaerobic zone; the anoxic zone is wrapped outside the anaerobic zone, and the aerobic zone is wrapped outside the anoxic zone; the anaerobic zone and the anoxic zone are respectively provided with a reflux regulating mechanism at the communicated positions of the anaerobic zone and the anoxic zone, and sewage in the treatment tank forms circulating water flow through the reflux regulating mechanisms; the aerobic zone is internally provided with a sedimentation zone which is communicated with the aerobic zone, and the sedimentation zone is provided with a water outlet pipe. This scheme just exists when the volume of sewage in good oxygen district is less, and sewage is in good oxygen district excessive circulation, and the electric energy is comparatively extravagant to when the mixed liquor of sedimentation zone contains mud volume great, can run mud and mud come-up phenomenon, this not only influences sewage treatment efficiency, thereby mud can pile up in the overflow weir moreover and block up the delivery port, and then need often clear up the overflow weir, has improved the disadvantage of human cost.
The present invention has been made based on the above-described circumstances.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the oxidation ditch sewage treatment device which can accelerate the aerobic treatment efficiency and reduce the labor cost.
The invention is realized by the following technical scheme:
the utility model provides an oxidation ditch sewage treatment plant, includes the sewage treatment pond, be equipped with anaerobic zone, anoxic zone, aerobiotic zone and sedimentation zone in the sewage treatment pond, be provided with the sewage import in the lower part of anaerobic zone, anoxic zone and anaerobic zone its upper portion be linked together, anoxic zone and aerobiotic zone its lower part be linked together, be equipped with aeration equipment in the bottom of aerobiotic zone, sedimentation zone's lower part is linked together with aerobiotic zone, sedimentation zone's lower part is equipped with the sludge reflux structure that flows back the partial mud that deposits in this district into anaerobic zone, still be equipped with the mixing arrangement who mixes backward flow mud and the sewage that gets into in the anaerobic zone, still be equipped with in aerobiotic zone and promote the sewage along its circumference first impeller that flows, still be equipped with in the aerobiotic zone and be pushed away by sewage when sewage is greater than the default, can the self-closing when sewage volume is less than the default.
The non-return door assembly comprises the door beams connected to the tank walls on two sides of the aerobic zone, the door beams are rotatably connected with the door plates which can be pushed away by sewage, and a reset structure which can reset the door plates is arranged between the door plates and the door beams.
The oxidation ditch sewage treatment device is characterized in that the door beam is provided with the connecting shaft, the door plate is rotationally connected to the connecting shaft, the reset structure comprises the torsion spring, the torsion spring is sleeved on the connecting shaft, one end of the torsion spring is connected to the connecting shaft or the door beam, and the other end of the torsion spring is abutted to the door plate.
According to the oxidation ditch sewage treatment device, the three-phase separator for separating mud from water to obtain sludge is arranged in the sedimentation zone, the sedimentation zone is divided into the clear water part and the pre-anoxic zone by the three-phase separator, the clear water part is arranged above the three-phase separator, the pre-anoxic zone is arranged below the three-phase separator, and the bottom of the pre-anoxic zone is provided with the inclined sludge hopper for converging the sludge.
The sewage treatment device for the oxidation ditch comprises the return pipe and the first pump body arranged on the return pipe, wherein one end of the return pipe extends into the inclined mud bucket, and the other end extends into the anaerobic zone.
The sewage treatment device for the oxidation ditch is characterized in that a conveying structure for conveying mixed liquid in the pre-anoxic zone into the anoxic zone is arranged between the pre-anoxic zone and the anoxic zone, the conveying structure comprises a conveying pipe and a second pump body arranged on the conveying pipe, one end of the conveying pipe extends into the pre-anoxic zone, and the other end of the conveying pipe extends into the anoxic zone.
The sewage treatment device with the oxidation ditch is characterized in that the sewage treatment tank is internally provided with the discharge structure for discharging sludge, the discharge structure comprises the discharge pipe and the third pump body arranged on the discharge pipe, one end of the discharge pipe extends into the inclined mud bucket, and the other end of the discharge pipe extends out of the sewage treatment tank.
The oxidation ditch sewage treatment device is characterized in that a second impeller for pushing sewage to flow along the circumferential direction is arranged in the anoxic zone.
According to the oxidation ditch sewage treatment device, the third impeller for pushing sewage to flow along the circumferential direction of the sewage is arranged in the pre-anoxic zone.
According to the oxidation ditch sewage treatment device, the upper part of the outer side inner wall of the sedimentation zone is provided with the water outlet structure.
Compared with the prior art, the invention has the following advantages:
1. the first impeller for pushing the sewage to flow along the circumferential direction is arranged in the aerobic zone, the check door assembly capable of being automatically closed is also arranged in the aerobic zone, and when the sewage quantity is smaller than a preset value, the check door assembly is closed to limit the sewage to circulate in the aerobic zone, so that the sewage can flow into the sedimentation zone quickly, and the aerobic treatment efficiency is improved; when the sewage quantity is larger than a preset value, the sewage can wash the check door assembly open to circulate in the aerobic zone, so that the sewage fully performs an aerobic reaction.
2. The three-phase separator is arranged at the bottom of the sedimentation zone and is used for separating mud, water and gas, the three-phase separator divides the sedimentation zone into a clear water part above and a pre-anoxic zone below, and the mud continuously slides from the three-phase separator to the pre-anoxic zone below, so that the mud is not accumulated at the bottom of the sedimentation zone, anaerobic floating mud can not be caused, too much mud can not be caused, the mud can not run, the accumulation of the mud in a water outlet structure is reduced, the cleaning times of the water outlet structure are reduced, and the cost of manpower is reduced. In the pre-anoxic zone, the sinking sludge is mixed with sewage, so that denitrification can be realized.
3. The sludge reflux structure comprises a reflux pipe and a first pump body arranged on the reflux pipe, sludge is conveyed into the anaerobic zone through the first pump body and subjected to anaerobic biological reaction together with sewage to remove phosphorus, a sludge reflux pump station and a pipeline are saved, the resistance of water is reduced, and the power of the reflux pump is smaller and electric energy is saved.
4. A second pump body and a conveying pipe are arranged between the pre-anoxic zone and the anoxic zone, and mixed liquid in the pre-anoxic zone is conveyed into the anoxic zone for denitrification through the second pump body and the conveying pipe, and meanwhile, the pre-anoxic zone also has a denitrification function, so that total nitrogen of effluent is lower, and an external carbon source can be reduced.
5. The sedimentation zone is fed with water from the bottom of the three-phase separator, the water is uniformly distributed, the upward flow speed is low, the disturbance to the sludge sedimentation is reduced, the sedimentation effect is good, the load is large, and the treatment capacity is strong.
6. The sewage treatment tank is also internally provided with a discharge structure for discharging sludge, and when the sludge is excessive, the sludge can be discharged out of the sewage treatment tank through the discharge structure.
Drawings
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a vertical cross-sectional view of the present invention;
FIG. 2 is a transverse cross-sectional view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic diagram of a three-phase separator according to the present invention;
FIG. 5 is a schematic view of the structure of the check door of the present invention;
FIG. 6 is a top view of the check door structure of the present invention;
fig. 7 is a cross-sectional view of a check door structure in the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
an oxidation ditch sewage treatment device as shown in fig. 1 to 7 comprises a sewage treatment tank 1, wherein an anaerobic zone 11, an anoxic zone 12, an aerobic zone 13 and a sedimentation zone 14 are arranged in the sewage treatment tank 1, a sewage inlet 111 is arranged at the lower part of the anaerobic zone 11, the anoxic zone 12 and the upper part of the anaerobic zone 11 are communicated through a first communication hole 100, the anoxic zone 12 and the lower part of the aerobic zone 13 are communicated through a second communication hole 200, a mixed solution flows into the aerobic zone 13 from the anoxic zone 12 through the second communication hole 200 after rotating for one circle, an aeration device 2 is arranged at the bottom of the aerobic zone 13, the lower part of the sedimentation zone 14 is communicated with the aerobic zone 13 through a third communication hole 300, and a mixed solution in the aerobic zone 13 flows into a pre-anoxic zone 142 from the aerobic zone 13 through the third communication hole 300 after rotating for one circle.
The lower part of the pre-anoxic zone 142 is provided with a sludge reflux structure for refluxing part of sludge precipitated in the zone into the anaerobic zone 11, the anaerobic zone 11 is also internally provided with a mixing device 3 for mixing the refluxed sludge with the entered sewage, the aerobic zone 13 is internally provided with a first pusher 4 for pushing the sewage to flow along the circumferential direction of the sewage, and the aerobic zone 13 is also internally provided with a non-return door assembly 5 which can be pushed away by the sewage when the sewage quantity is larger than a preset value and can be automatically closed when the sewage quantity is smaller than the preset value. The arrow direction in the figure is the flow direction of the water. The preset value is the critical sewage amount when the sewage amount reaches a certain degree and can overcome the pulling force of the check door assembly 5 of the reset structure pair so as to push the check door assembly 5 open.
When the amount of sewage is small, the check door assembly 5 limits the sewage to circulate in the aerobic zone 13, so that the sewage can flow into the sedimentation zone 14 quickly, and the aerobic treatment efficiency is improved; when the amount of sewage is excessive, the sewage can wash open the check door assembly 5 to circulate in the aerobic zone 13, so that the sewage is fully subjected to aerobic reaction.
The non-return door assembly 5 comprises door beams 51 connected to the tank walls on two sides of the aerobic zone 13, door plates 52 capable of being pushed away by sewage are rotatably connected to the door beams 51, and reset structures 53 capable of resetting the door plates 52 are arranged between the door plates 52 and the door beams 51. The door beam 51 can be connected to the tank walls at the two sides of the aerobic zone 13 through threaded fasteners or explosion-pulling screws.
The door beam 51 is provided with a connecting shaft 511, the door plate 52 is rotatably connected to the connecting shaft 511, the reset structure 53 comprises a torsion spring, the torsion spring is sleeved on the connecting shaft 511, one end of the torsion spring is connected to the connecting shaft 511 or the door beam 51, and the other end of the torsion spring is abutted to the door plate 52. When the pushing force of the sewage to the door panel 52 is greater than the pulling force of the door panel 52 of the torsion spring pair, the door panel 52 opens the sewage to circulate, and when the pushing force of the sewage to the door panel 52 is less than the pulling force of the door panel 52 of the torsion spring pair, the door panel 52 closes. In an embodiment, the door beam 51 is provided with a row of door panels 52, a side wall of the aerobic zone 13 is provided with a baffle column 54, when the door panels 52 are closed, the free end of the door panel 52 closest to the baffle column 54 is abutted against the baffle column 54, and the free end of the next door panel 52 is abutted against the previous door panel 52. The baffle column 54 can be connected to the tank walls at the two sides of the aerobic zone 13 through threaded fasteners or explosion-pulling screws.
The above-mentioned mixing device 3 consists of a motor and a propeller. The first impeller 4 and the mixing device 3 are fixed by arranging a mounting frame in the sewage treatment tank 1, and the first impeller 4 and the mixing device 3 can be QDT low-speed impellers.
Two second flow pushing devices 41 for pushing sewage to flow along the circumferential direction are arranged in the anoxic zone 12. The second impeller 41 may be a QDT low-speed impeller, which prevents sludge deposition and pushes the mixture to rotate.
Four third flow ejectors 42 for pushing sewage to flow along the circumferential direction are arranged in the pre-anoxic zone 142, and the third flow ejectors 42 can be QDT low-speed flow ejectors for preventing sludge deposition and pushing the mixed liquid to rotate.
The three-phase separator 7 for separating mud from water to obtain sludge is arranged in the sedimentation zone 14, the sedimentation zone 14 is divided into a clear water part 141 and a pre-anoxic zone 142 by the three-phase separator 7, the clear water part 141 is arranged above the three-phase separator 7, and the pre-anoxic zone 142 is arranged below the three-phase separator 7.
The three-phase separator 7 may be a model MY-120 three-phase separator. The sedimentation zone 14 is divided into a clear water part 141 and a pre-anoxic zone 142 by the three-phase separator 7, so that sludge is sedimentated in the pre-anoxic zone 142, clear water after the sludge is separated in the clear water part 141, and mixed liquid in the pre-anoxic zone 142 rises to the clear water part 141 of the sedimentation zone 14 through an inclined slot channel of the three-phase separator 7; thereby reducing the accumulation of mud in the water outlet structure 20 and further reducing the cleaning times of the water outlet structure 20, and reducing the cost of manpower. The three-phase separator 7 may be secured in the settling zone 14 by threaded fasteners. The three-phase separator 7 is also connected with an exhaust pipe 40 for exhausting the separated gas into the aerobic zone 13.
The bottom of the pre-anoxic zone 142 is provided with an inclined sludge hopper 6 for converging sludge, the sludge backflow structure comprises a backflow pipe 81 and a first pump body 82 arranged on the backflow pipe 81, one end of the backflow pipe 81 extends into the inclined sludge hopper 6, and the other end extends into the anaerobic zone 11. Sludge is fed into the anaerobic zone 11 through the first pump 82, and anaerobically reacts with sewage to remove phosphorus. The first pump body 82 may be a low lift return pump.
A conveying structure for conveying the mixed liquid in the pre-anoxic zone 142 into the anoxic zone 12 is arranged between the pre-anoxic zone 142 and the anoxic zone 12, the conveying structure comprises a conveying pipe 30 and a second pump body 301 arranged on the conveying pipe 30, one end of the conveying pipe 30 extends into the pre-anoxic zone 142, and the other end extends into the anoxic zone 12. The mixed liquor in the pre-anoxic zone 142 is conveyed into the anoxic zone 12 for denitrification through the conveying structure, and meanwhile, the pre-anoxic zone 142 also has a denitrification function, so that the total nitrogen of the effluent is lower, and the additional carbon source can be reduced. The second pump body 301 may be a low-lift reflux pump.
The sewage treatment tank 1 is internally provided with a discharge structure for discharging sludge, the discharge structure comprises a discharge pipe 101 and a third pump body 102 arranged on the discharge pipe 101, one end of the discharge pipe 101 extends into the inclined mud bucket 6, the other end extends out of the sewage treatment tank 1, and when excessive sludge exists in the sedimentation zone 14, the sludge can be discharged out of the sewage treatment tank 1 through the discharge structure. The third pump body 102 may be a low-lift reflux pump.
The upper part of the outer side inner wall of the sedimentation zone 14 is provided with a water outlet structure 20, the water outlet structure 20 can be an overflow weir, and the outer side wall of the overflow weir is provided with a water outlet.
The anaerobic zone 11, the anoxic zone 12, the aerobic zone 13 and the sedimentation zone 14 are all circular or elliptical.
Claims (10)
1. An oxidation ditch sewage treatment plant which is characterized in that: comprises a sewage treatment tank (1), an anaerobic zone (11), an anoxic zone (12) surrounding the anaerobic zone (11), an aerobic zone (13) surrounding the anoxic zone (12) and a sedimentation zone (14) surrounding the aerobic zone (13), wherein a sewage inlet (111) is arranged at the lower part of the anaerobic zone (11), the anoxic zone (12) is communicated with the upper part of the anaerobic zone (11), the anoxic zone (12) and the aerobic zone (13) are communicated with each other through a second communication hole (200), an aeration device (2) is arranged at the bottom of the aerobic zone (13), the lower part of the sedimentation zone (14) is communicated with the aerobic zone (13) through a third communication hole (300), a sludge reflux structure for refluxing part of sludge precipitated in the anaerobic zone (11) is arranged at the lower part of the sedimentation zone (14), a mixing device (3) for mixing the refluxed sludge with the entered sewage is also arranged in the anaerobic zone (11), the sewage flow is pushed by a sewage pushing device (13) to be automatically closed when the sewage flow is in a preset value of a preset value (5), the sewage flow is set in the preset value, and when the sewage flow is automatically pushed by the preset value is smaller than a preset value (13), the sewage flow is closed when the preset value is set in the preset value, the check door component (5) prevents sewage from circulating in the aerobic zone (13) and accelerates the sewage to flow into the sedimentation zone (14); when the sewage quantity is larger than a preset value, the sewage rushes open the check door assembly (5) to circulate in the aerobic zone (13).
2. An oxidation ditch sewage treatment apparatus according to claim 1, wherein: the non-return door assembly (5) comprises door beams (51) connected to tank walls on two sides of the aerobic zone (13), door plates (52) capable of being pushed away by sewage are rotatably connected to the door beams (51), and reset structures (53) capable of resetting the door plates (52) are arranged between the door plates (52) and the door beams (51).
3. An oxidation ditch sewage treatment apparatus according to claim 2, wherein: the door beam (51) on be equipped with connecting axle (511), the door plant rotates to be connected on connecting axle (511), reset structure (53) include the torsional spring, the torsional spring cup joints on connecting axle (511), the one end of torsional spring is connected on connecting axle (511) or door beam (51), the other end butt is on door plant (52).
4. An oxidation ditch sewage treatment apparatus according to claim 1 or 3, wherein: the three-phase separator (7) for separating sludge from mud is arranged in the sedimentation zone (14), the sedimentation zone (14) is divided into a clear water part (141) and a pre-anoxic zone (142) by the three-phase separator (7), the clear water part (141) is arranged above the three-phase separator (7), the pre-anoxic zone (142) is arranged below the three-phase separator (7), and an inclined mud bucket (6) for converging sludge is arranged at the bottom of the pre-anoxic zone (142).
5. The oxidation ditch sewage treatment apparatus according to claim 4, wherein: the sludge backflow structure comprises a backflow pipe (81) and a first pump body (82) arranged on the backflow pipe (81), one end of the backflow pipe (81) stretches into the inclined sludge hopper (6), and the other end stretches into the anaerobic zone (11).
6. The oxidation ditch sewage treatment apparatus according to claim 4, wherein: the oxygen-deficient area (142) is equipped with the conveying structure who carries into oxygen-deficient area (12) with the mixed liquor in the oxygen-deficient area (142) in advance between oxygen-deficient area (12), conveying structure includes conveyer pipe (30) and locates second pump body (301) on conveyer pipe (30), in one end of conveyer pipe (30) stretches into oxygen-deficient area (142) in advance, the other end stretches into oxygen-deficient area (12).
7. The oxidation ditch sewage treatment apparatus according to claim 4, wherein: the sewage treatment tank (1) is internally provided with a discharge structure for discharging sludge, the discharge structure comprises a discharge pipe (101) and a third pump body (102) arranged on the discharge pipe (101), one end of the discharge pipe (101) extends into the inclined mud bucket (6), and the other end extends out of the sewage treatment tank (1).
8. An oxidation ditch sewage treatment apparatus according to claim 1, wherein: the anoxic zone (12) is internally provided with a second impeller (41) for pushing sewage to flow along the circumferential direction of the anoxic zone.
9. The oxidation ditch sewage treatment apparatus according to claim 4, wherein: a third impeller (42) for pushing sewage to flow along the circumferential direction is arranged in the pre-anoxic zone (142).
10. An oxidation ditch sewage treatment apparatus according to claim 1, wherein: the upper part of the outer side inner wall of the sedimentation zone (14) is provided with a water outlet structure (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311584082.4A CN117285161B (en) | 2023-11-25 | 2023-11-25 | Oxidation ditch sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311584082.4A CN117285161B (en) | 2023-11-25 | 2023-11-25 | Oxidation ditch sewage treatment device |
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| CN117285161A CN117285161A (en) | 2023-12-26 |
| CN117285161B true CN117285161B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311584082.4A Active CN117285161B (en) | 2023-11-25 | 2023-11-25 | Oxidation ditch sewage treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU735575A1 (en) * | 1975-06-04 | 1980-05-25 | 3а зиталь | Unit for biological purification of waste water |
| CN101973680A (en) * | 2010-10-28 | 2011-02-16 | 中山市环保实业发展有限公司 | Integrated A2-O oxidation ditch |
| RU110367U1 (en) * | 2011-01-11 | 2011-11-20 | Борис Петрович Ленский | TWO-STAGE BIOLOGICAL SEWAGE TREATMENT STATION (OPTIONS) |
| CN104291530A (en) * | 2014-10-17 | 2015-01-21 | 中山环保产业股份有限公司 | Sequencing batch biochemical sewage treatment device and sedimentation-drainage method thereof |
| CN219341937U (en) * | 2022-11-30 | 2023-07-14 | 广东硕光环保科技有限公司 | Integrated domestic sewage treatment device |
-
2023
- 2023-11-25 CN CN202311584082.4A patent/CN117285161B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU735575A1 (en) * | 1975-06-04 | 1980-05-25 | 3а зиталь | Unit for biological purification of waste water |
| CN101973680A (en) * | 2010-10-28 | 2011-02-16 | 中山市环保实业发展有限公司 | Integrated A2-O oxidation ditch |
| RU110367U1 (en) * | 2011-01-11 | 2011-11-20 | Борис Петрович Ленский | TWO-STAGE BIOLOGICAL SEWAGE TREATMENT STATION (OPTIONS) |
| CN104291530A (en) * | 2014-10-17 | 2015-01-21 | 中山环保产业股份有限公司 | Sequencing batch biochemical sewage treatment device and sedimentation-drainage method thereof |
| CN219341937U (en) * | 2022-11-30 | 2023-07-14 | 广东硕光环保科技有限公司 | Integrated domestic sewage treatment device |
Non-Patent Citations (1)
| Title |
|---|
| 二级厌氧+氧化沟工艺治理薯类酒精糟液;周开;;酿酒科技(第04期);第122-124页 * |
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| CN117285161A (en) | 2023-12-26 |
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