CN111018106A - Sewage treatment device with improved AOAO (argon oxygen optical oxygen evolution) process - Google Patents
Sewage treatment device with improved AOAO (argon oxygen optical oxygen evolution) process Download PDFInfo
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- CN111018106A CN111018106A CN201911205667.4A CN201911205667A CN111018106A CN 111018106 A CN111018106 A CN 111018106A CN 201911205667 A CN201911205667 A CN 201911205667A CN 111018106 A CN111018106 A CN 111018106A
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- 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
Abstract
The invention discloses a sewage treatment device with improved AOAO technology, which comprises: aerobic tank, oxygen deficiency pond and sedimentation tank, wherein: the aerobic tanks and the anoxic tanks are respectively provided with a plurality of tanks, and the aerobic tanks and the anoxic tanks are alternately arranged around the circumferential direction of the sedimentation tank to form an annular structure taking the sedimentation tank as the center; the sedimentation tank is provided with a water inlet pipe externally connected with a sewage pipe, the sedimentation tank is provided with a discharge port connected with one of the anoxic tanks and a water inlet connected with one of the aerobic tanks, and the aerobic tank connected with the water inlet is adjacent to the anoxic tank connected with the water outlet; the side walls between the aerobic tanks and the adjacent anoxic tanks are respectively provided with water through holes for communicating the aerobic tanks and the anoxic tanks, and the water through holes on the side walls are arranged in a staggered manner in the circumferential direction of the sedimentation tank. The invention accelerates the efficiency of sewage treatment, saves the occupied space and ensures the effect of sewage treatment.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device with an improved AOAO (argon oxygen optical oxygen evolution) process.
Background
A2The process flow of the/O is simpler; anaerobic, anoxic and aerobic alternate operation is not beneficial to filamentous fungi propagation, and sludge bulking is not easy to occur; no chemical dosing is needed, the operation cost is low, and the total hydraulic retention time is less than that of other similar processes. But A is2The capital cost and the operation cost of the/O process are both higher than those of the common activated sludge method, the operation management requirement is high, and the method is generally suitable for large and medium-sized urban sewage plants requiring nitrogen and phosphorus removal. However, at present, the types of integrated sewage treatment devices on the market are various, the traditional process is mainly followed in the process, and the activated sludge A/O method and the activated sludge A are mainly adopted2The main improved processes of the/O method, the biomembrane method and some biofilters are as follows: a multi-point water inlet inversion A/O process; a preposed anaerobic reactor and an A/O process; the UCT/VIP process (reactor division, PF reactor principle); the aerobic and anoxic double internal reflux process has the common problems of unreasonable utilization of influent carbon source, low ammonia nitrogen removal rate, unstable effluent quality and the like. While the urban sewage treatment plant is gradually improved, the sewage treatment in vast rural areas is faced with a difficult problem. In addition, the multistage AO reaction tank has more structures, is relatively complex to operate and has high requirements on operators.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a sewage treatment device with an improved AOAO process.
The invention provides a sewage treatment device with improved AOAO technology, which comprises: aerobic tank, oxygen deficiency pond and sedimentation tank, wherein:
the aerobic tanks and the anoxic tanks are respectively provided with a plurality of tanks, and the aerobic tanks and the anoxic tanks are alternately arranged around the peripheral direction of the sedimentation tank at the outer side of the sedimentation tank so as to form an annular structure taking the sedimentation tank as the center;
the sedimentation tank is provided with a water inlet pipe externally connected with a sewage pipe, the sedimentation tank is provided with a discharge port connected with one of the anoxic tanks so that sewage in the sedimentation tank enters the anoxic tank and a water inlet connected with one of the aerobic tanks so that water in the aerobic tank flows into the sedimentation tank, and the aerobic tank connected with the water inlet is adjacent to the anoxic tank connected with the water outlet;
the side walls between the aerobic tanks and the adjacent anoxic tanks are respectively provided with water through holes for communicating the aerobic tanks and the anoxic tanks, and the water through holes on the side walls are arranged in a staggered manner in the circumferential direction of the sedimentation tank.
Preferably, the anoxic pond is externally connected with a water replenishing pipe.
Preferably, at least one of the aerobic tanks is provided with a return pipeline which extends into the bottom of the sedimentation tank and is communicated with the sedimentation tank.
Preferably, the anoxic tank is internally provided with a filler.
Preferably, the aerobic tank is internally provided with a filler.
Preferably, a stirring device is arranged in the aerobic tank.
Preferably, an aeration pipe is laid at the bottom of the aerobic tank.
Preferably, the sedimentation tank is connected with a water outlet pipe.
Preferably, two aerobic tanks are arranged, namely a first aerobic tank and a second aerobic tank; the number of the anoxic tanks is two, namely a first anoxic tank and a second anoxic tank; the first anoxic tank, the first aerobic tank, the second anoxic tank and the second aerobic tank are arranged on the outer side of the sedimentation tank in sequence to form an annular structure taking the sedimentation tank as the center; the sedimentation tank and the first anoxic tank are communicated with the through holes of the sedimentation tank and the first anoxic tank to form a water outlet, and the through holes communicated with the sedimentation tank and the second aerobic tank are arranged between the sedimentation tank and the second aerobic tank to form a water inlet; the side wall between the first anoxic tank and the first aerobic tank, the side wall between the first aerobic tank and the second anoxic tank, the side wall between the second anoxic tank and the second aerobic tank, and the side wall between the second aerobic tank and the first anoxic tank are respectively provided with water passing holes, and the water passing holes on the two adjacent side walls are arranged in a staggered manner.
Preferably, the height of the water passing hole between the first anoxic pond and the first aerobic pond is h1, the height of the water passing hole between the first aerobic pond and the second anoxic pond is h2, the height of the water passing hole between the second anoxic pond and the second aerobic pond is h3, the height of the water passing hole between the second aerobic pond and the first anoxic pond is h4, h1 is less than h2, h3 is less than h2, and h3 is less than h 4.
In the invention, the concentric circle distribution saves the occupied space and saves a secondary sedimentation tank in the traditional process, so that the device is compact and small, and the capital cost and the energy consumption are reduced; and the structure that water passing holes are reserved between the side walls of the anoxic tanks and the aerobic tanks is adopted, so that compared with the traditional single-point water inlet, the carbon source of raw water is more reasonably distributed, and the sewage treatment efficiency is accelerated; by adopting the AOAO process, the mixed liquor can be fully reacted after reaching the sedimentation zone through the anoxic and aerobic zones and then reflowing to the anoxic zone.
In conclusion, the improved sewage treatment device of the AOAO technology integrates water inlet, sedimentation, aeration biological treatment, secondary sedimentation and discharge, reasonably distributes the carbon source of raw water, accelerates the sewage treatment efficiency, saves the occupied space due to concentric circular distribution, is compact and small, and simultaneously ensures the sewage treatment effect.
Drawings
FIG. 1 is a schematic structural diagram of an improved sewage treatment apparatus of AOAO technology.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
As shown in fig. 1, fig. 1 is a schematic structural diagram of an improved sewage treatment device of AOAO process according to the present invention.
Referring to fig. 1, the present invention provides a sewage treatment apparatus with improved AOAO process, comprising: aerobic tank 1, oxygen deficiency pond 2 and sedimentation tank 3, wherein:
the aerobic tank 1 and the anoxic tank 2 are respectively provided with a plurality of tanks, and the aerobic tanks 1 and the anoxic tanks 2 are alternately arranged around the sedimentation tank 3 in the circumferential direction outside the sedimentation tank 3 to form an annular structure taking the sedimentation tank 3 as the center.
The sedimentation tank 3 is provided with a water inlet pipe externally connected with a sewage pipe, the sedimentation tank 3 is provided with a discharge port connected with one of the anoxic tanks 2 so that sewage in the sedimentation tank 3 enters the anoxic tank 2 and a water inlet connected with one of the aerobic tanks 1 so that the water in the aerobic tank 1 flows into the sedimentation tank 3, and the aerobic tank 1 connected with the water inlet is adjacent to the anoxic tank 2 connected with the water outlet. The side walls between the aerobic tanks 1 and the adjacent anoxic tanks 2 are respectively provided with water through holes for communicating the aerobic tanks and the anoxic tanks, and the water through holes on the side walls are arranged in a staggered manner in the circumferential direction of the sedimentation tank 3.
When the invention is used for treating sewage, the sewage enters the sedimentation tank 3 from the water inlet pipe, flows into one of the anoxic tanks 2 through the water outlet after being preliminarily precipitated by the sedimentation tank 3, mainly carries out denitrification reaction in the anoxic tank, and denitrifying bacteria can react NO under the anoxic condition3-N or NO2-N as electron acceptor and organic as electron donor, NO3-N or NO2Stepwise reduction of-N to N2Then, the sewage in the anoxic tank 2 enters the adjacent aerobic tank 1 from the anoxic area, COD is removed and nitration is carried out in the aerobic tank 1, the sewage after aerobic treatment sequentially enters other anoxic tanks 2 and the aerobic tank 1, and finally, the sewage flows back to the sedimentation tank 3 through the water inlet to carry out secondary sedimentation.
Therefore, the invention saves the occupied space and simultaneously saves the secondary sedimentation tank 3 in the traditional process, so that the device is compact and small, and the capital cost and the energy consumption are reduced; and the structure that water passing holes are reserved between the side walls of the anoxic tanks 2 and the aerobic tanks 1 is adopted, so that the carbon source of raw water is more reasonably distributed compared with the traditional single-point water inlet, and the sewage treatment efficiency is accelerated; by adopting the AOAO process, the mixed liquor can be fully reacted after reaching the sedimentation zone through the anoxic and aerobic zones and then reflowing to the anoxic zone.
In addition, the anoxic pond 2 is externally connected with a water replenishing pipe; because the denitrifying bacteria in the anoxic pond 2 are heterotrophic facultative anaerobic bacteria, the anaerobic bacteria can survive under the action of sufficient carbon source, and if the carbon source in the anoxic pond 2 is insufficient, the growth of the denitrifying bacteria can be influenced, so that the anoxic pond 2 is externally connected with a water replenishing pipe, the carbon source is conveniently and better distributed, and the sewage treatment efficiency is accelerated.
In this embodiment, at least one of the aerobic tanks 1 is provided with a return pipe extending into the bottom of the sedimentation tank 3 and communicating with the sedimentation tank 3, so that the water in the aerobic tank 1 can flow into the bottom of the sedimentation tank 3 through the return pipe, thereby further improving the sewage treatment effect.
In this embodiment, the aerobic tank 1 is provided with a filler to improve the sewage treatment effect. A stirring device is arranged in the aerobic tank 1, and the sewage can be fully contacted with the filler in the tank by the stirring device, so that the reaction process is accelerated;
in this embodiment, the anoxic tank 2 is filled with a filler.
In this embodiment, an aeration pipe is laid at the bottom of the aerobic tank 1. The sedimentation tank 3 is connected with a water outlet pipe.
Example 1
The aerobic tanks 1 are provided with two aerobic tanks, namely a first aerobic tank 11 and a second aerobic tank 12; the number of the anoxic tanks 2 is two, namely a first anoxic tank 21 and a second anoxic tank 22; the first anoxic tank 21, the first aerobic tank 11, the second anoxic tank 22 and the second aerobic tank 12 are sequentially arranged outside the sedimentation tank 3 to form an annular structure taking the sedimentation tank 3 as the center; the sedimentation tank 3 is communicated with the first anoxic tank 21 through holes to form a water outlet, and a water inlet is formed by communicating the sedimentation tank 3 with the second aerobic tank 12 through holes; the side wall between the first anoxic tank 21 and the first aerobic tank 11, the side wall between the first aerobic tank 11 and the second anoxic tank 22, the side wall between the second anoxic tank 22 and the second aerobic tank 12, and the side wall between the second aerobic tank 12 and the first anoxic tank 21 are respectively provided with water passing holes, the height of the water passing hole between the first anoxic tank 21 and the first aerobic tank 11 is h1, the height of the water passing hole between the first aerobic tank 11 and the second anoxic tank 22 is h2, the height of the water passing hole between the second anoxic tank 22 and the second aerobic tank 12 is h3, the height of the water passing hole between the second aerobic tank 12 and the first anoxic tank 21 is h4, h1< h2, h3< h2, and h3< h 4.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. An AOAO process modified sewage treatment plant, comprising: aerobic tank (1), oxygen deficiency pond (2) and sedimentation tank (3), wherein:
the aerobic tanks (1) and the anoxic tanks (2) are respectively provided with a plurality of aerobic tanks, and the aerobic tanks (1) and the anoxic tanks (2) are alternately arranged around the peripheral direction of the sedimentation tank (3) at the outer side of the sedimentation tank (3) to form an annular structure taking the sedimentation tank (3) as the center;
the sedimentation tank (3) is provided with a water inlet pipe externally connected with a sewage pipe, the sedimentation tank (3) is provided with a discharge port connected with one of the anoxic tanks (2) so that sewage in the sedimentation tank (3) enters the anoxic tank (2), and a water inlet connected with one of the aerobic tanks (1) so that water in the aerobic tank (1) flows into the sedimentation tank (3), and the aerobic tank (1) connected with the water inlet is adjacent to the anoxic tank (2) connected with the water outlet;
the side walls between the aerobic tanks (1) and the adjacent anoxic tanks (2) are respectively provided with water passing holes for communicating the aerobic tanks and the anoxic tanks, and the water passing holes on the side walls are arranged in a staggered manner in the circumferential direction of the sedimentation tank (3).
2. Sewage treatment plant with improved AOAO-process according to claim 1, characterized in that the anoxic tank (2) is externally connected with a water replenishing pipe.
3. Sewage treatment plant with improved AOAO-process according to claim 1, characterised in that at least one of the aerobic tanks (1) is provided with a return pipe extending into the bottom of the sedimentation tank (3) and communicating with the sedimentation tank (3).
4. Sewage treatment plant with improved AOAO-process according to claim 1, characterized in that inside the anoxic tank (2) there is a filling.
5. Sewage treatment plant with improved AOAO-process according to claim 1, characterised in that the aerobic tank (1) is provided with a filling.
6. Sewage treatment plant with improved AOAO process according to claim 5 characterized by that inside the aerobic tank (1) is provided a stirring device.
7. The improved sewage treatment plant according to the AOAO technology of claim 1, wherein the bottom of the aerobic tank (1) is laid with an aeration pipe.
8. Sewage treatment plant with improved AOAO-process according to claim 1, characterized in that the sedimentation basin (3) is connected with a water outlet pipe.
9. Sewage treatment plant with improved AOAO-process according to any of claims 1-8, characterised in that the aerobic tank (1) is provided with two, respectively a first aerobic tank (11) and a second aerobic tank (12); the two anoxic tanks (2) are respectively a first anoxic tank (21) and a second anoxic tank (22), and the first anoxic tank (21), the first aerobic tank (11), the second anoxic tank (22) and the second aerobic tank (12) are sequentially arranged on the outer side of the sedimentation tank (3) to form an annular structure taking the sedimentation tank (3) as the center; the sedimentation tank (3) and the first anoxic tank (21) are communicated with the through holes of the sedimentation tank and the first anoxic tank to form a water outlet, and the through holes communicated with the sedimentation tank (3) and the second aerobic tank (12) are arranged between the sedimentation tank and the second aerobic tank to form a water inlet; the side wall between the first anoxic tank (21) and the first aerobic tank (11), the side wall between the first aerobic tank (11) and the second anoxic tank (22), the side wall between the second anoxic tank (22) and the second aerobic tank (12) and the side wall between the second aerobic tank (12) and the first anoxic tank (21) are respectively provided with water through holes, and the water through holes on the two adjacent side walls are arranged in a staggered manner.
10. Sewage treatment plant with improved AOAO-process according to claim 9, characterised in that the height of the water passing holes between the first anoxic tank (21) and the first aerobic tank (11) is h (1), the height of the water passing holes between the first aerobic tank (11) and the second anoxic tank (22) is h (2), the height of the water passing holes between the second anoxic tank (22) and the second aerobic tank (12) is h (3), the height of the water passing holes between the second aerobic tank (12) and the first anoxic tank (21) is h4, h1< h2, h3< h2, h3< h 4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911205667.4A CN111018106A (en) | 2019-11-29 | 2019-11-29 | Sewage treatment device with improved AOAO (argon oxygen optical oxygen evolution) process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911205667.4A CN111018106A (en) | 2019-11-29 | 2019-11-29 | Sewage treatment device with improved AOAO (argon oxygen optical oxygen evolution) process |
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| CN111018106A true CN111018106A (en) | 2020-04-17 |
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| CN201911205667.4A Pending CN111018106A (en) | 2019-11-29 | 2019-11-29 | Sewage treatment device with improved AOAO (argon oxygen optical oxygen evolution) process |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101088930A (en) * | 2007-06-13 | 2007-12-19 | 江苏凌志环保有限公司 | Combined aeration and deposition tank |
| EP2628712A1 (en) * | 2012-02-20 | 2013-08-21 | Sapling sp. z o. o. | Adiabatic, mechanical-biological sewage treatment plant |
| CN105084542A (en) * | 2015-08-31 | 2015-11-25 | 桑德集团有限公司 | Integrated equipment of miniature biological rotating disc |
| CN108128986A (en) * | 2018-01-29 | 2018-06-08 | 北京桑德环境工程有限公司 | Integrated multistage AO decentralized sewage treatment devices and method |
-
2019
- 2019-11-29 CN CN201911205667.4A patent/CN111018106A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101088930A (en) * | 2007-06-13 | 2007-12-19 | 江苏凌志环保有限公司 | Combined aeration and deposition tank |
| EP2628712A1 (en) * | 2012-02-20 | 2013-08-21 | Sapling sp. z o. o. | Adiabatic, mechanical-biological sewage treatment plant |
| CN105084542A (en) * | 2015-08-31 | 2015-11-25 | 桑德集团有限公司 | Integrated equipment of miniature biological rotating disc |
| CN108128986A (en) * | 2018-01-29 | 2018-06-08 | 北京桑德环境工程有限公司 | Integrated multistage AO decentralized sewage treatment devices and method |
Non-Patent Citations (1)
| Title |
|---|
| 吴桐: "《中国城市垃圾、污水处理技术实务》", 31 July 2001, 世界知识出版社 * |
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