CN114394668B - Combined reaction device for high-pressure biochemical sewage treatment process - Google Patents
Combined reaction device for high-pressure biochemical sewage treatment process Download PDFInfo
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- CN114394668B CN114394668B CN202111585647.1A CN202111585647A CN114394668B CN 114394668 B CN114394668 B CN 114394668B CN 202111585647 A CN202111585647 A CN 202111585647A CN 114394668 B CN114394668 B CN 114394668B
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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
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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
- C02F3/006—Regulation methods for biological treatment
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- 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
Abstract
The invention discloses a combined reaction device for a high-pressure biochemical sewage treatment process, which comprises an aerobic reaction unit, an anoxic reaction unit, an anaerobic reaction unit, a high-pressure aeration system, a sludge regulating system and a pressure and tail gas regulating and controlling device, wherein the aerobic reaction unit, the anoxic reaction unit and the anaerobic reaction unit are sequentially connected, and the high-pressure aeration system, the sludge regulating system and the pressure and tail gas regulating and controlling device are arranged in the device, wherein the pressure and the tail gas regulating and controlling device are arranged in the device, and the high-pressure aeration system is arranged in the device, and the pressure and the tail gas regulating and controlling device is arranged in the device, and is connected with the device through the high-pressure aeration system, the sludge regulating system and the tail gas regulating and controlling device: the air pipe of the high-pressure aeration system is connected with the upper part of the aerobic reaction unit; the pressure and tail gas regulating and controlling device is respectively connected with the aerobic unit, the anoxic reaction unit and the anaerobic reaction unit; the sludge regulating system is connected with the bottoms of the reaction tanks of the aerobic unit, the anoxic reaction unit and the anaerobic reaction unit respectively. The invention firstly realizes the high pressure maintenance in the device through the system combination, and improves the mass transfer and treatment efficiency; the combined reaction device greatly shortens the overall residence time and solves the problem of large sewage biochemical reaction tanks.
Description
Technical Field
The invention belongs to a wastewater treatment device, and particularly relates to a device applied to biochemical treatment of wastewater.
Background
Along with the increasing requirements on sewage discharge, the longer the sewage treatment flow is, the longer the residence time of sewage in a biochemical process section is, the larger the occupied area is, the cost of land is increased, the sewage treatment cost is increased, and the pressure of enterprises is increased; the pressure is not only a problem faced by manufacturers, but also a problem of increased residence time and increased occupied area due to the improvement of emission standards for municipal wastewater treatment.
However, the existing biological sewage treatment process has the problems of large occupied area, small occupied area of a deep well reactor, high cost, more underground extension, great difficulty in maintenance and the like. How to solve the problem of reducing the occupied area of sewage biochemical treatment is an urgent need to be solved at present.
Disclosure of Invention
The invention aims to solve the problem of reducing the large occupied area of sewage biological treatment facilities and provides a combined reaction device for a sewage circulation high-pressure biochemical sewage treatment process.
The invention is realized by the following technical scheme.
The device comprises an aerobic reaction unit, an anoxic reaction unit and an anaerobic reaction unit which are sequentially connected, and also comprises a high-pressure aeration system, a sludge regulating system and a pressure and tail gas regulating and controlling device, wherein:
the aerobic reaction unit, the anoxic reaction unit and the anaerobic reaction unit mainly comprise a reaction tank and a super-dispersion device arranged in the reaction tank;
the air pipe of the high-pressure aeration system is connected with the upper part of the aerobic reaction tank; the pressure and tail gas regulating and controlling device is respectively connected with the aerobic reaction unit, the anoxic reaction unit and the anaerobic reaction unit, so that the inlet air is firstly in the aerobic reaction tank, the tail gas of the aerobic reaction tank enters the anoxic reaction tank after being regulated by the pressure and tail gas regulating and controlling device, and the tail gas of the anoxic reaction tank enters the anaerobic reaction tank after being regulated by the pressure and tail gas regulating and controlling device;
the sludge regulating system is connected with the bottoms of the reaction tanks of the aerobic reaction unit, the anoxic reaction unit and the anaerobic reaction unit respectively and is used for discharging and refluxing redundant sludge;
the pressure and tail gas regulating and controlling device comprises a pressure sensor, an air inlet and outlet controller, a backflow preventing self-locking device and a controller, and is mainly used for pressure monitoring, air exhaust and air inlet regulation, and is used for tail gas emission and pressure control of an aerobic device, air inlet and pressure control of an anoxic device and air inlet and pressure control of an anaerobic device.
In the combined reaction device for the high-pressure biochemical sewage treatment process, the reaction tanks are preferably round reaction tanks, and 1-10 sets of super-dispersion systems are arranged in each reaction tank.
The pressure in the aerobic reaction tank, the anoxic reaction tank and the anaerobic reaction tank is 0.1Mpa-5Mpa; and the pressure gradually decreases.
In the combined reaction device for the high-pressure biochemical sewage treatment process, the aerobic reaction unit, the anoxic reaction unit and the anaerobic reaction unit are preferably selected from the anaerobic reaction unit, the anoxic reaction unit, the aerobic reaction unit or the completely opposite water inlet mode or the combination of the anaerobic reaction unit, the anoxic reaction unit and the aerobic reaction unit.
In the combined reaction device for the high-pressure biochemical sewage treatment process, a water pressurizing device is arranged in front of the water inlets of the anaerobic reaction tank, the anoxic reaction tank and the aerobic reaction tank.
In the combined reaction device for the high-pressure biochemical sewage treatment process, the volume ratio of the reaction tanks of the anoxic reaction tank, the aerobic reaction tank and the anaerobic reaction tank is preferably 2-10:1-5:1.
The invention relates to a combined reaction device for a high-pressure biochemical sewage treatment process, which preferably further comprises a dissolved oxygen testing device or an on-line dissolved oxygen testing device arranged in a reaction tank, so as to link the monitored numerical value with an aeration, pressure control and tail gas regulation control device and regulate aeration.
The combined reaction device for the high-pressure biochemical sewage treatment process further preferably comprises a pressurizing auxiliary device.
The high-pressure aeration system in the device consists of a high-pressure fan, a pressure test and a flow control device; the sludge regulating device consists of a sludge pump and a flow control device.
Compared with the prior art, the method has the following advantages:
the device of the invention firstly realizes that the high pressure is kept in the device through the reaction tank, the high-pressure aeration system and the pressure regulator tail gas control system, improves the mass transfer efficiency of various substances such as oxygen and the like to microorganisms, and secondly utilizes the tail gas of the aerobic reaction tank to stir the anaerobic reaction tank and the anoxic reaction tank to homogenize the inside of the anaerobic reaction tank, the water, the pollutant, the mud and the like, thereby realizing the uniform distribution of the microorganisms in the water and improving the treatment efficiency of the microorganisms. Through once more pressurizing, the increase is realized to many reaction tanks, realizes the very big promotion of efficiency. The device provided by the invention has the advantages that the overall residence time of sewage treated is greatly shortened, the problem of large sewage biochemical reaction tanks is solved, and the purpose of reducing the occupied area is realized.
Drawings
FIG. 1 is a schematic diagram of the combined reactor composition of the high-pressure biochemical sewage treatment process of the invention;
in fig. 1, 1 is an anaerobic reaction tank, 2 is an anoxic reaction tank, 3 is an aerobic reaction tank, 4 is an ultra-split device, 5 is a high-pressure aeration system, 6 is a pressure and tail gas regulating and controlling device, 7 is a sludge regulating system, 8 is a water supercharging device, 9 is a tail gas exhaust port, and 10 is a sludge discharge port.
Detailed Description
The following drawings are provided to further describe the technical scheme of the present invention in detail in connection with specific embodiments.
The following is implemented according to fig. 1: the combined reaction device for the high-pressure biochemical sewage treatment process comprises an anaerobic reaction tank 1, an anoxic reaction tank 2 and an aerobic reaction tank 3 which are connected in sequence; a set of super-dispersing device 4 is arranged in each of the three reaction tanks, and a water pressurizing device 8 is arranged on the pipeline at the front end of each of the three reaction tanks; the combined reaction device also comprises a high-pressure aeration system 5, a pressure and tail gas regulating and controlling device 6 and a sludge regulating system 7, wherein an air pipe of the high-pressure aeration system 5 is connected with the upper part of the aerobic reaction tank 3; the pressure and tail gas regulating and controlling device 6 is connected with the inlet and outlet parts of the tail gas at the tops of the anaerobic reaction tank 1, the anoxic reaction tank 2 and the aerobic reaction tank 3 respectively, and the sludge regulating system 7 is connected with the sludge discharge ports at the bottoms of the anaerobic reaction tank 1, the anoxic reaction tank 2 and the aerobic reaction tank 3 respectively, and redundant sludge is discharged and flows back.
The gas source of the aerobic reaction tank is connected with the high-pressure aeration system, the aeration source of the anoxic reaction tank is about the tail gas of the aerobic reaction tank, and the aeration of the anaerobic reaction tank is from the tail gas of the anoxic reaction tank; specifically, the tail gas of the aerobic reaction tank 3 enters a pressure and tail gas regulating and controlling device 6, and enters an anoxic reaction tank 2 after being regulated, the tail gas of the anoxic reaction tank 2 returns to the pressure and tail gas regulating and controlling device 6, and enters an anaerobic reaction tank 1 after being regulated by the pressure and tail gas regulating and controlling device 6, and the tail gas entering pressure and tail gas regulating and controlling device 6 of the anaerobic reaction tank 1 is discharged or utilized after being regulated; wherein the reaction tanks are all bottom inlet air, and the top of the reaction tank is discharged.
The pressure and tail gas regulating and controlling device 6 comprises a pressure sensor, an air inlet and outlet controller, an anti-backflow self-locking device and a controller, and is mainly used for pressure monitoring, air exhaust and air inlet regulation and is used for exhaust emission and pressure control of an aerobic reaction tank, air inlet and pressure control of an anoxic reaction tank and air inlet and pressure control of an anaerobic reaction tank.
The pressure of the reaction tank is preferably in the range of 0.1Mpa-5Mpa, and the reaction tank is made of stainless steel or a material with better pressure-bearing performance.
The following examples 1-3 are specific application tests for treating wastewater by using a high-pressure biochemical wastewater treatment process combination reactor according to the present invention, to illustrate the technical effects of the technical scheme of the present invention.
Example 1 some petrochemical wastewater has COD of 2480mg/L and ammonia nitrogen of 87mg/L; after stable operation, the load of the device is 1.5m 3 /d/m 3 The COD of the effluent is 140mg/L, and the removal efficiency is 94.35%.
Example 2 raw wastewater COD of a certain refining wastewater is 10010mg/L, and ammonia nitrogen is 108mg/L; after stable continuous operation, the load of the device is 1.8m 3 /d/m 3 The COD of the effluent is 480mg/L, and the removal efficiency is 95.20%.
Example 3 some municipal wastewater raw wastewater COD is 312mg/L, ammonia nitrogen is28mg/L; after stable continuous operation, the load of the device is 1.1m 3 /d/m 3 The COD of the effluent is 18mg/L, and the removal efficiency is 94.23%.
Experiments show that the load of the device is greatly improved compared with the load of the traditional biochemical tank, and the treatment efficiency is obviously improved.
Claims (7)
1. The high-pressure biochemical sewage treatment process is characterized by using a high-pressure biochemical sewage treatment process combined reaction device, wherein the device comprises an aerobic reaction unit, an anoxic reaction unit and an anaerobic reaction unit which are sequentially connected, and further comprises a high-pressure aeration system, a sludge regulating system and a pressure and tail gas regulating and controlling device, wherein:
the aerobic reaction unit, the anoxic reaction unit and the anaerobic reaction unit mainly comprise a reaction tank and a super-dispersion device arranged in the reaction tank;
the air pipe of the high-pressure aeration system is connected with the upper part of the aerobic reaction tank; the pressure and tail gas regulating and controlling device is respectively connected with the aerobic reaction unit, the anoxic reaction unit and the anaerobic reaction unit, so that the inlet air is firstly in the aerobic reaction tank, the tail gas of the aerobic reaction tank enters the anoxic reaction tank after being regulated by the pressure and tail gas regulating and controlling device, and the tail gas of the anoxic reaction tank enters the anaerobic reaction tank after being regulated by the pressure and tail gas regulating and controlling device;
the sludge regulating system is respectively connected with the bottoms of the reaction tanks of the aerobic unit, the anoxic reaction unit and the anaerobic reaction unit and is used for discharging and refluxing the redundant sludge;
the pressure and tail gas regulating and controlling device comprises a pressure sensor, an air inlet and outlet controller, a backflow preventing self-locking device and a controller, so as to monitor the pressure of each reaction tank and simultaneously regulate the pressure of high-pressure aeration or tail gas entering the next reaction tank;
the pressure in the aerobic reaction tank, the anoxic reaction tank and the anaerobic reaction tank is 0.1Mpa-5Mpa; and the pressure gradually decreases;
the water inlet mode of the combined reaction device of the high-pressure biochemical sewage treatment process is an anaerobic reaction tank, an anoxic reaction tank, an aerobic reaction tank or a completely opposite water inlet mode or a combination of the two;
the combined reaction device for the high-pressure biochemical sewage treatment process also comprises a dissolved oxygen testing device or an online dissolved oxygen testing device arranged in the reaction tank, so as to link the monitored numerical value with the aeration, pressure control and tail gas regulation control device and regulate the aeration.
2. The high-pressure biochemical sewage treatment process according to claim 1, wherein the number of the super-dispersing devices arranged in each reaction tank is 1-10.
3. The high-pressure biochemical sewage treatment process according to claim 1, wherein a water pressurizing device is arranged in front of water inlets of the anaerobic reaction tank, the anoxic reaction tank and the aerobic reaction tank.
4. The high pressure biochemical sewage treatment process according to claim 1, further comprising a dosing auxiliary device.
5. The high-pressure biochemical sewage treatment process according to claim 1, wherein the volume ratio of the anoxic reaction tank, the aerobic reaction tank and the anaerobic reaction tank is 2-10:1-5:1.
6. The high-pressure biochemical sewage treatment process according to claim 1, wherein the high-pressure aeration system consists of a high-pressure fan, a pressure test and a flow control device.
7. The high-pressure biochemical sewage treatment process according to claim 1, wherein the sludge regulating system comprises a sludge pump and a flow control device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111585647.1A CN114394668B (en) | 2021-12-23 | 2021-12-23 | Combined reaction device for high-pressure biochemical sewage treatment process |
| PCT/CN2021/144060 WO2023115644A1 (en) | 2021-12-23 | 2021-12-31 | Combined reaction apparatus for high-pressure biochemical wastewater treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111585647.1A CN114394668B (en) | 2021-12-23 | 2021-12-23 | Combined reaction device for high-pressure biochemical sewage treatment process |
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| Publication Number | Publication Date |
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| CN114394668A CN114394668A (en) | 2022-04-26 |
| CN114394668B true CN114394668B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111585647.1A Active CN114394668B (en) | 2021-12-23 | 2021-12-23 | Combined reaction device for high-pressure biochemical sewage treatment process |
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| CN (1) | CN114394668B (en) |
| WO (1) | WO2023115644A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL9500171A (en) * | 1995-01-31 | 1996-09-02 | Pacques Bv | Aerobic wastewater treatment method. |
| WO2001000537A1 (en) * | 1999-06-24 | 2001-01-04 | Linfeng Shi | Process and apparatus for treating waste water |
| KR20090101030A (en) * | 2008-03-20 | 2009-09-24 | 주식회사 동신이엔텍 | J&s cdmr (compact direct micro reactors) |
| CN101767910A (en) * | 2010-01-07 | 2010-07-07 | 同济大学 | Continuous flow sewage hypoxia short distance denitrification treating technique |
| CN205170499U (en) * | 2015-12-01 | 2016-04-20 | 绿地环保科技股份有限公司 | Take sewage treatment device of secondary aeration structure |
| IL261842A (en) * | 2018-09-17 | 2019-01-31 | S G T Sustainable Green Tech Ltd | Efficient operation of an anaerobic-aerobic sbr |
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2021
- 2021-12-23 CN CN202111585647.1A patent/CN114394668B/en active Active
- 2021-12-31 WO PCT/CN2021/144060 patent/WO2023115644A1/en unknown
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| WO2023115644A1 (en) | 2023-06-29 |
| CN114394668A (en) | 2022-04-26 |
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