CN219217730U - Inclined plate baffled type A2O reactor for high oxygen transfer - Google Patents

Inclined plate baffled type A2O reactor for high oxygen transfer Download PDF

Info

Publication number
CN219217730U
CN219217730U CN202320179782.4U CN202320179782U CN219217730U CN 219217730 U CN219217730 U CN 219217730U CN 202320179782 U CN202320179782 U CN 202320179782U CN 219217730 U CN219217730 U CN 219217730U
Authority
CN
China
Prior art keywords
anoxic
zone
aerobic
anaerobic
inclined plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202320179782.4U
Other languages
Chinese (zh)
Inventor
叶长兵
李嘉
周志明
李兰
赵斌
马靖
杨玲菲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yuxi Normal University
Original Assignee
Yuxi Normal University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yuxi Normal University filed Critical Yuxi Normal University
Priority to CN202320179782.4U priority Critical patent/CN219217730U/en
Application granted granted Critical
Publication of CN219217730U publication Critical patent/CN219217730U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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

Abstract

The utility model discloses a high-oxygen transfer inclined plate baffled A2O reactor, which relates to the technical field of sewage treatment equipment and comprises a reactor body and a secondary sedimentation tank; the reactor body comprises an anaerobic zone, an anoxic zone and a deep aerobic zone which are sequentially arranged from top to bottom; an anaerobic-anoxic sloping plate is arranged between the anaerobic zone and the anoxic zone; an anoxic-aerobic sloping plate is arranged between the anoxic zone and the deep aerobic zone; the aerobic zone is communicated with the secondary sedimentation tank through a self-flowing pipeline; the bottom of the deep aerobic zone is provided with a microporous aeration disc. The aeration holes are arranged at the water depth of 8 meters, the oxygen transfer rate is improved to 4% by the larger water pressure and longer air-water contact time, and the pollutant degradation rate is accelerated; the baffle plate is designed as an inclined plate, has the gas-liquid (solid) separation function, and the gas escaping from the aeration tank can not influence the environmental conditions of the anaerobic zone/anoxic zone, and reduces the retention and the decomposition of the activated sludge; the occupied area of the reactor is reduced to 1/2 of the original occupied area due to vertical distribution, and the capital cost is obviously reduced due to the reduction of the occupied area.

Description

Inclined plate baffled type A2O reactor for high oxygen transfer
Technical Field
The utility model relates to the technical field of sewage treatment equipment, in particular to a high-oxygen transfer inclined plate baffled A2O reactor.
Background
Biological denitrification and dephosphorization of sewage is mainly achieved by the temporal or spatial variation of the anaerobic-anoxic-aerobic environment in the system (Barnard, 1976; irving, 1989). Among existing biological denitrification and dephosphorization sewage treatment processes, A2O (anaerobic-oxidation) and an improved A2O are the most commonly used processes (Colomer, et al, 2013; lai, et al, 2011; liu, et al, 2013) with higher denitrification and dephosphorization functions. The A2O process was developed by Rabinowitz and Marais in 1980 on the basis of the AO-process denitrification process (Rabinowitz, et al, 1980). After that, expert scholars in various countries continuously raise the theoretical level of biological nitrogen and phosphorus removal of sewage based on the basic theory of traditional biological nitrogen and phosphorus removal, and develop a plurality of improved A2O processes. UCT process was developed by university of Keprindon (Kuba, et al, 1997; stgaard, et al, 1997) to significantly improve the dephosphorization ability of the system, as against the problem of nitrate nitrogen affecting anaerobic section phosphorus release in the A2O process; aiming at the problem of low nitrogen and phosphorus removal efficiency caused by insufficient system carbon source, the university of John Ness of south Africa develops a JHB process (Bortone, et al, 1999) and obtains a comparatively ideal nitrogen and phosphorus removal effect in practical engineering; aiming at the problem of competition of denitrifying bacteria and phosphorus accumulating bacteria on limited carbon sources in an anaerobic stage, the Van professor in the Netherlands develops a BCFS (binary controlled reactor) process through a reasonable carbon source splitting technology between the phosphorus accumulating bacteria and the phosphorus accumulating bacteria (Van Loosdrecht, et al, 1997) and realizes the stable denitrification and dephosphorization effect of the system under a lower SVI value; the venturi et al integrated with other processes using the A2O process, achieved high contaminant removal efficacy with low excess sludge yield (venturi, et al, 2011; hu, et al, 2013); ren Naqi et al developed the HITNP process in a unique reflux, biofilm and activated sludge compounding manner to achieve a high-efficiency denitrification and dephosphorization effect at low carbon in a 'one-carbon dual-purpose' manner (Ren Naqi et al, 2007); some domestic experts and scholars systematically study the pollution removal effect and characteristics of the inverted A2O process, and the result shows that the process has better denitrification and dephosphorization effects (Zhang Bo, 2000, zhang Jianjun, 2013).
In summary, the A2O and modified A2O technologies are mature, and have strong denitrification and dephosphorization effects in the sewage treatment process, but the following two problems also exist: 1) The problems of overlong process flow line and large occupied area exist; (2) The method has the problems of low oxygen transfer utilization rate of the aerobic tank and high operation cost. The specific analysis is as follows:
wastewater treatment processes with simultaneous denitrification and dephosphorization are most typical for SBR and A2O that form anaerobic, nitrogen-deficient, aerobic environments in time and space. The existing research results and engineering application results show that the A2/O process has obvious denitrification and dephosphorization effects and is widely applied to the wastewater treatment at the present stage. However, the traditional A2/O technology has the problem of longer streamline, and the streamline of the A2/O biological purification system only comprises an anaerobic tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank. The longer process streamline not only increases the difficulty in management, but also increases the occupied area of the treated structure, thereby greatly improving the construction cost.
The relationship between the aeration holes and the set depth shows that the set depth of the aeration head has a positive correlation with the oxygen transfer efficiency. Based on the relationship between the two, some expert scholars develop a deepwater aeration activated sludge method, and the deepwater water pressure is utilized to improve the oxygen transfer rate. The aeration holes of the aeration tank of the traditional A2/O process are arranged for 2.5 to 3 meters, and the oxygen transfer rate is lower and is approximately between 2.5 and 3 percent. The lower oxygen transfer rate results in excessive energy consumption and higher operating costs.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the inclined plate baffled type A2O reactor with high oxygen transfer, which obviously improves the oxygen transfer rate and the pollution purification efficiency of an A2O process aerobic tank by using the water pressure with larger water depth; the inclined plate is designed to form the environmental conditions required by the anaerobic zone, the anoxic zone and the deep aerobic zone; the floor space of the utility model is significantly reduced.
In order to achieve the above object, the present utility model provides the following solutions:
the utility model provides a high-oxygen transfer inclined plate baffled A2O reactor, which comprises a reactor body and a secondary sedimentation tank;
the reactor body comprises an anaerobic zone, an anoxic zone and a deep aerobic zone which are sequentially arranged from top to bottom;
an anaerobic-anoxic sloping plate is arranged between the anaerobic zone and the anoxic zone; one end of the anaerobic-anoxic sloping plate is connected with the inner wall at one side of the reactor body, an anaerobic-anoxic communication port is arranged between the other end of the anaerobic-anoxic sloping plate and the inner wall at the other side of the reactor body, and the anaerobic-anoxic communication port is used for communicating the anaerobic zone and the anoxic zone;
an anoxic-aerobic sloping plate is arranged between the anoxic zone and the deep aerobic zone; one end of the anoxic-aerobic reaction plate is connected with the inner wall of the other side in the reactor body, an anoxic-aerobic communication port is arranged between the other end of the anoxic-aerobic reaction plate and the inner wall of one side of the reactor body, the anoxic-aerobic communication port is connected with a guide plate, the guide plate is used for guiding a muddy water mixture to flow to the bottom of a deepwater aerobic zone so as to avoid the phenomenon of short flow of the muddy water mixture in the aerobic zone, and the anoxic-aerobic communication port is used for communicating the anoxic zone and the deepwater aerobic zone;
one side of the deep aerobic zone, which is far away from the anoxic-aerobic communication port, extends upwards to the top of the reactor body to form an aerobic zone;
a water inlet is formed in one side of the upper part of the anaerobic zone;
a first plug flow stirrer is arranged below the water inlet at one side of the upper part of the anaerobic zone;
a second diving flow impeller is arranged on the inner wall of the other side in the reactor body and positioned below the anaerobic-anoxic communication port;
the aerobic zone is communicated with the secondary sedimentation tank through a self-flowing pipeline;
the bottom of the deep aerobic zone is provided with a microporous aeration disc which is communicated with the air outlet end of the deepwater aeration pump.
Optionally, a nitrifying liquid reflux branch is arranged on the self-flow pipeline, one end of the nitrifying liquid reflux branch is connected with the self-flow pipeline, and the other end of the nitrifying liquid reflux branch extends to the anaerobic-anoxic communication port.
Optionally, a second flowmeter and a second reflux pump are arranged on the nitrified liquid reflux branch.
Optionally, a sludge discharge pipe is arranged at the bottom of the secondary sedimentation tank, and a sludge discharge valve is arranged on the sludge discharge pipe; a sludge return pipeline is arranged on the sludge discharge pipe above the sludge discharge valve; one end of the sludge return pipeline is connected with the sludge discharge pipe, and the other end of the sludge return pipeline extends to the water inlet of the anaerobic zone.
Optionally, a third flowmeter and a first reflux pump are arranged on the sludge reflux pipeline.
Optionally, the anoxic-aerobic inclined plate is obliquely downward arranged from one side to the other side of the reactor body.
Optionally, the included angle between the anoxic-aerobic inclined plate and the horizontal plane is 15-35 degrees.
Optionally, the anoxic-aerobic inclined plate is obliquely arranged downwards from the other side to one side of the reactor body.
Optionally, the included angle between the anoxic-aerobic inclined plate and the horizontal plane is 15-35 degrees.
Optionally, a water inlet pump and a first flowmeter are arranged between the water inlet and the anaerobic zone.
Compared with the prior art, the utility model has the following technical effects:
the high-oxygen transfer inclined plate baffled type A2O reactor is characterized in that the A2O reactor is arranged as a folded plate downflow type, and the reactor is divided into an integrated anaerobic zone, an anoxic zone and a deep aerobic zone from top to bottom; the aeration holes are arranged at the water depth of 8 meters, the larger water pressure can improve the oxygen transfer rate to 4 percent, and meanwhile, the purification degradation rate of pollutants is accelerated, so that the efficiency and the low consumption are obvious; the partition boards separating the anaerobic zone, the anoxic zone and the deep aerobic zone are designed as inclined boards, the inclined boards have the gas-liquid (solid) separation function, the environmental conditions of the anaerobic zone/the anoxic zone are not affected by the gas escaping from the aeration tank, and the detention and the decomposition of the activated sludge are avoided; the floor area of the A2O reactor is reduced to only 1/2 of that of the traditional A2O reactor, and the floor area is greatly reduced, so that the construction cost is obviously reduced.
The utility model has difficult estimation of environmental benefit and social benefit due to long-term high-efficiency stability, so the utility model only analyzes the construction and operation cost. Compared with the traditional A2O, the utility model increases the oxygen transfer rate to 4% by the larger water pressure of 8 meters water depth, and can save the aeration energy consumption by 33%; the aeration by the activated sludge method accounts for 50 percent of the total energy consumption, so that the running cost can be saved by 16.5 percent. The previous research results show that the utility model can accelerate the purification degradation rate of pollutants, save the running cost and acquire related data through engineering practice.
In the running process, the high-oxygen transfer inclined plate baffle plate A2O reactor innovatively designs an integrated anaerobic zone, an anoxic zone and an aerobic zone from top to bottom, the occupied area of a treatment construction is reduced to 1/2 of that of the traditional A2O treatment construction, and the land-marking cost can be saved by 50%. The land-feature cost and the migration cost are different according to the different areas of the project, and the ratio of the land-feature cost and the migration cost to the total capital cost is difficult to estimate, so the capital cost saved by the utility model is also difficult to estimate.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the inclined plate baffled A2O reactor for high oxygen transfer of the present utility model.
Reference numerals illustrate: 1. a first flowmeter; 2. an anaerobic zone; 3. anaerobic-anoxic sloping plates; 4. an aerobic zone; 5. a second flowmeter; 6. a third flowmeter; 7. a first return pump; 8. a mud discharging valve; 9. a deep water aeration pump; 10. a secondary sedimentation tank; 11. a second reflux pump; 12. a microporous aeration disc; 13. a deep aerobic zone; 14. anoxic-aerobic sloping plates; 15. a second plug flow mixer; 16. an anoxic zone; 17. a first plug flow mixer; 18. a water inlet pump; 19. a deflector; 20 defoaming micro teeth.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the embodiment provides a high oxygen transfer inclined plate baffled A2O reactor, which comprises a reactor body and a secondary sedimentation tank 10; the reactor body comprises an anaerobic zone 2, an anoxic zone 16 and a deep aerobic zone 13 which are sequentially arranged from top to bottom; an anaerobic-anoxic sloping plate 3 is arranged between the anaerobic zone 2 and the anoxic zone 16; one end of the anaerobic-anoxic sloping plate 3 is connected with the inner wall on one side of the reactor body, and an anaerobic-anoxic communication port is arranged between the other end of the anaerobic-anoxic sloping plate 3 and the inner wall on the other side of the reactor body and is used for communicating the anaerobic zone 2 and the anoxic zone 16; an anoxic-aerobic sloping plate 14 is arranged between the anoxic zone 16 and the deep aerobic zone 13; one end of the anoxic-aerobic reaction is connected with the inner wall of the other side in the reactor body, and an anoxic-aerobic communication port is arranged between the other end of the anoxic-aerobic inclined plate 14 and the inner wall of one side of the reactor body and is used for communicating the anoxic zone 16 and the deep aerobic zone 13; the side of the deep aerobic zone 13, which is far away from the anoxic-aerobic communication port, extends upwards to the reactor body to form an aerobic zone 4; a water inlet is arranged at one side of the upper part of the anaerobic zone 2; a water inlet pump 18 and a first flowmeter 1 are arranged between the water inlet and the anaerobic zone 2; a first submersible stirrer 17 is arranged below the water inlet on one side of the upper part of the anaerobic zone 2; a second submersible stirrer 15 is arranged on the inner wall of the other side of the reactor body and positioned below the anaerobic-anoxic communication port, and the second submersible stirrer 15 is positioned below the anaerobic-anoxic communication port; the aerobic zone 4 is communicated with the secondary sedimentation tank 10 through a self-flowing pipeline; the bottom of the deep aerobic zone 13 is provided with a microporous aeration disc 12, and the microporous aeration disc 12 is communicated with the air outlet end of the deep water aeration pump 9.
In this embodiment, a nitrifying liquid reflux branch is disposed on the self-flow pipeline, one end of the nitrifying liquid reflux branch is connected with the self-flow pipeline, and the other end of the nitrifying liquid reflux branch extends to the anaerobic-anoxic communication port.
The nitrified liquid reflux branch is provided with a second flowmeter 5 and a second reflux pump 11.
A sludge discharge pipe is arranged at the bottom of the secondary sedimentation tank 10, and a sludge discharge valve 8 is arranged on the sludge discharge pipe; a sludge return pipeline is arranged on the sludge discharge pipe above the sludge discharge valve 8; one end of the sludge return pipeline is connected with a sludge discharge pipe, and the other end of the sludge return pipeline extends to the water inlet of the anaerobic zone 2.
The sludge return line is provided with a third flowmeter 6 and a first return pump 7.
The anoxic-aerobic inclined plate 14 is arranged obliquely downward from one side to the other side of the reactor body. The angle between the anoxic-aerobic inclined plate 14 and the horizontal plane is 15-35 degrees, and the angle is set to be 25 degrees in the embodiment. An exhaust port is provided below the higher end of the anaerobic-anoxic sloping plate 3, i.e., at the top of the anoxic zone 16, and is in communication with the nitrogen recovery device.
The anoxic-aerobic inclined plate 14 is arranged obliquely downwards from the other side to one side of the reactor body. The angle between the anoxic-aerobic inclined plate 14 and the horizontal plane is 15-35 degrees, and the angle is set to be 25 degrees in the embodiment.
In a more specific embodiment, the volume ratio of anaerobic zone 2, anoxic zone 16, and deep aerobic zone 13 is 1:2:4.
In a further embodiment, the lower end of the anoxic-aerobic inclined plate 14 is provided with a guide plate 19, the top of the guide plate 19 is connected with the lower end of the anoxic-aerobic inclined plate 14, and the guide plate 19 guides the muddy water mixture from the anoxic zone to the bottom of the deepwater aerobic zone so as to avoid the phenomenon of short flow of the muddy water mixture entering the aerobic zone. The lower surface of the anoxic-aerobic inclined plate 14 is provided with defoaming micro-teeth 20, and the defoaming micro-teeth 20 cut floating bubbles on an aerobic zone for a plurality of times and break into micro-bubbles with smaller particle size, so that the gas-liquid contact area is increased, the oxygen transfer rate is improved, and the oxygen transfer energy consumption is reduced.
The anaerobic zone 2 is positioned at the uppermost layer of the integrated reactor, and after inflow water flows into the anaerobic zone 2, the inflow water and the return activated sludge are mixed by a first submersible mixer 17 to complete the phosphorus release function of the anaerobic zone 2; the anoxic zone 16 is positioned on the second layer of the integrated reactor, and the nitrifying liquid returned by the aerobic zone 4 and the muddy water mixed liquid flowing in from the anaerobic zone 2 are mixed by the second submerged stirrer 15 to complete the denitrification function of the anoxic zone 16; the microporous aeration disc 12 of the deep aerobic zone 13 is arranged at the depth of 8 meters of water, oxygen is supplied by the deep water aeration pump 9, and smaller bubble particles are released to increase the air-liquid phase contact mass transfer area; the greater deep water pressure can improve the oxygen transfer rate to 4%, and the sufficient dissolved oxygen can improve the metabolism of microorganisms, so that the efficiency of aerobic dephosphorization, nitrification and organic matter degradation is improved, and the operation cost is obviously reduced compared with the traditional method. In the integrated reactor, inclined plates with an inclination angle of 25 degrees, namely an anaerobic-anoxic inclined plate 3 and an anoxic-aerobic inclined plate 14 are designed on a partition plate separating the anaerobic zone 2, the anoxic zone 16 and the deep aerobic zone 13, and the anaerobic-anoxic inclined plate 3 and the anoxic-aerobic inclined plate 14 are used for reducing the retention of activated sludge so as to prevent the decomposition of the activated sludge; anoxic zone 16 is the core reaction zone for denitrification and contains a substantial amount of NO 3- The nitrifying liquid of-N flows back from the aerobic zone 4 to the anoxic zone 16, and NO is generated under the action of denitrifying bacteria 3- Conversion of-N to N 2 Generated N 2 、CO 2 And CH (CH) 4 The gas is discharged through the anaerobic-anoxic sloping plate 3 and the exhaust port arranged in the anoxic zone 16, and can be collected and purified by the nitrogen purification and collection device to realize the recycling utilization. The inclined plates between the anoxic zone 16 and the aerobic zone 4 have the gas-liquid (solid) separation effect, and the untransferred oxygen and the generated gas in the aeration tank escape through the designed anoxic-aerobic inclined plate 14 and the right aerobic zone 4, so that the set environmental conditions of the anaerobic zone 2/anoxic zone 16 are not influenced. Designed at the end of the sloping plateThe semicircular arc can effectively prevent the muddy water mixed solution from flowing back from the lower layer area to the upper layer area, and does not interfere the environmental conditions of the anoxic area 16 and the anaerobic area 2. The submersible mixer is arranged at the water inlet ends of the anaerobic zone 2 and the anoxic zone 16 and is installed for forming horizontal thrust flow force to fully mix mud and water. In general, the sludge reflux ratio is 50%, and the nitrified liquid reflux ratio is 100 to 200%. The secondary sedimentation tank 10 is designed as a normal vertical sedimentation tank. The occupation area of the inclined plate baffle A2O reactor with high oxygen transfer is reduced to only 1/2 of that of the traditional A2O reactor, and the occupation area is greatly reduced, so that the capital cost is obviously reduced.
It should be noted that it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present utility model have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present utility model and its core ideas; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims (10)

1. The inclined plate baffled A2O reactor for high oxygen transfer is characterized by comprising a reactor body and a secondary sedimentation tank;
the reactor body comprises an anaerobic zone, an anoxic zone and a deep aerobic zone which are sequentially arranged from top to bottom;
an anaerobic-anoxic sloping plate is arranged between the anaerobic zone and the anoxic zone; one end of the anaerobic-anoxic sloping plate is connected with the inner wall at one side of the reactor body, an anaerobic-anoxic communication port is arranged between the other end of the anaerobic-anoxic sloping plate and the inner wall at the other side of the reactor body, and the anaerobic-anoxic communication port is used for communicating the anaerobic zone and the anoxic zone;
an anoxic-aerobic sloping plate is arranged between the anoxic zone and the deep aerobic zone; one end of the anoxic-aerobic reaction plate is connected with the inner wall of the other side in the reactor body, an anoxic-aerobic communication port is arranged between the other end of the anoxic-aerobic reaction plate and the inner wall of one side of the reactor body, the anoxic-aerobic communication port is connected with a guide plate, the guide plate is used for guiding a muddy water mixture to flow to the bottom of a deepwater aerobic zone so as to avoid the phenomenon of short flow of the muddy water mixture in the aerobic zone, and the anoxic-aerobic communication port is used for communicating the anoxic zone and the deepwater aerobic zone;
one side of the deep aerobic zone, which is far away from the anoxic-aerobic communication port, extends upwards to the top of the reactor body to form an aerobic zone;
a water inlet is formed in one side of the upper part of the anaerobic zone;
a first plug flow stirrer is arranged below the water inlet at one side of the upper part of the anaerobic zone;
a second plug flow stirrer is arranged on the inner wall of the other side in the reactor body and positioned below the anaerobic-anoxic communication port;
the aerobic zone is communicated with the secondary sedimentation tank through a self-flowing pipeline;
the bottom of the deep aerobic zone is provided with a microporous aeration disc which is communicated with the air outlet end of the deepwater aeration pump.
2. The high-oxygen transfer inclined plate baffled A2O reactor according to claim 1, wherein a nitrifying liquid reflux branch is arranged on the self-flow pipeline, one end of the nitrifying liquid reflux branch is connected with the self-flow pipeline, and the other end of the nitrifying liquid reflux branch extends to the anaerobic-anoxic communication port.
3. The high oxygen transfer inclined plate baffled A2O reactor according to claim 2, wherein a second flowmeter and a second reflux pump are arranged on the nitrified liquid reflux branch.
4. The high-oxygen transfer inclined plate baffled A2O reactor according to claim 1, wherein a sludge discharge pipe is arranged at the bottom of the secondary sedimentation tank, and a sludge discharge valve is arranged on the sludge discharge pipe; a sludge return pipeline is arranged on the sludge discharge pipe above the sludge discharge valve; one end of the sludge return pipeline is connected with the sludge discharge pipe, and the other end of the sludge return pipeline extends to the water inlet of the anaerobic zone.
5. The high oxygen transfer inclined plate baffled A2O reactor according to claim 4, wherein a third flowmeter and a first reflux pump are arranged on the sludge reflux pipeline.
6. The high oxygen transfer inclined plate baffled A2O reactor according to claim 1, wherein the anoxic-aerobic inclined plate is disposed obliquely downward from one side to the other side of the reactor body.
7. The high oxygen transfer inclined plate baffled A2O reactor according to claim 6, wherein the angle between the anoxic-aerobic inclined plate and the horizontal plane is 15-35 °.
8. The high oxygen transfer inclined plate baffled A2O reactor according to claim 1, wherein the anoxic-aerobic inclined plate is disposed obliquely downward from the other side to one side of the reactor body.
9. The high oxygen transfer inclined plate baffled A2O reactor according to claim 8, wherein the angle between the anoxic-aerobic inclined plate and the horizontal plane is 15-35 °.
10. The high oxygen transfer inclined plate baffled A2O reactor of claim 1, wherein a water inlet pump and a first flowmeter are disposed between the water inlet and the anaerobic zone.
CN202320179782.4U 2023-02-06 2023-02-06 Inclined plate baffled type A2O reactor for high oxygen transfer Active CN219217730U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320179782.4U CN219217730U (en) 2023-02-06 2023-02-06 Inclined plate baffled type A2O reactor for high oxygen transfer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320179782.4U CN219217730U (en) 2023-02-06 2023-02-06 Inclined plate baffled type A2O reactor for high oxygen transfer

Publications (1)

Publication Number Publication Date
CN219217730U true CN219217730U (en) 2023-06-20

Family

ID=86735683

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320179782.4U Active CN219217730U (en) 2023-02-06 2023-02-06 Inclined plate baffled type A2O reactor for high oxygen transfer

Country Status (1)

Country Link
CN (1) CN219217730U (en)

Similar Documents

Publication Publication Date Title
WO2021036458A1 (en) Efficient self-circulation biological denitrification device and working method therefor
CN106315853B (en) Oxidation ditch membrane bioreactor and sewage treatment process and application thereof
CN214781015U (en) Integrated sewage treatment device with concentric structure
CN214653942U (en) Integrated vertical A2O sewage treatment equipment applied to deep denitrification and dephosphorization
CN101289254B (en) Membrane bioreactor effluent treatment process for increasing denitrification effect
CN105293701B (en) Carbon source reserve type IBR bioreactor
CN206970300U (en) Nitrification liquid reflux and biological reaction pool for biological reaction pool
CN210945013U (en) Low-aeration up-flow type biological bed organic wastewater treatment system
CN210505759U (en) Self-circulation efficient biological denitrification device
CN201914974U (en) Dual-circular groove membrane bioreactor (MBR) waste water treatment system
CN219217730U (en) Inclined plate baffled type A2O reactor for high oxygen transfer
CN215905936U (en) Multistage MBBR synchronous decarbonization nitrogen and phosphorus removal preliminary treatment sewage treatment system
CN215049050U (en) Biological treatment unit efficiency strengthening deep emission reduction device for municipal sewage treatment plant
CN116282531A (en) Inclined plate baffled type A2O reactor for high oxygen transfer
CN111977797B (en) Wastewater treatment system and process for synchronous denitrification and dephosphorization of AxOx
CN109987702B (en) Synchronous nitrogen and phosphorus removal oxidation ditch and enhanced nitrogen removal process method thereof
CN208776535U (en) A kind of domestic sewage in rural areas integrated equipment for wastewater treatment
CN209759234U (en) Integrated sewage treatment device
CN208361986U (en) Nitrogen and phosphorus removal bio purifies sewage treatment efficient backflow system
CN113292195A (en) AnOnSewage treatment equipment
CN107963782B (en) Biological contact oxidation reaction system with enhanced denitrification function
CN110713258A (en) Full-mixing type kernel denitrification sewage treatment system and process
CN217148916U (en) Domestic sewage treatment device
CN1450003A (en) Batch circulated upflow sludge bed organic waste water treatment process
CN217780848U (en) Villages and small towns domestic sewage treatment device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant