A sbr reaction tank

Abstract

This utility model discloses an SBR reactor, including a tank body. An aeration pipe and a water distribution pipe are located at the bottom of the tank body. The water distribution pipe is positioned above the aeration pipe and is equipped with a swirl aerator. Water distribution holes are located at the bottom of the water distribution pipe. The swirl aerator and water distribution holes are staggered. Both the aeration and water distribution pipes include an outer rectangular loop and a horizontal pipe connecting opposite sides of the rectangular loop. A central pipe connects the middle of the rectangular loop and the horizontal pipe. The central pipe of the aeration pipe is connected to an air supply pipe located at the bottom outer side of the tank body via an inverted U-shaped connecting pipe. The air supply pipe is connected to a blower. The central pipe of the water distribution pipe is connected to an inlet pipe located at the bottom outer side of the tank body, and a wastewater pump is installed on the inlet pipe. This SBR reactor significantly improves wastewater treatment efficiency and system stability.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an SBR reactor. Background Technology

[0002] Traditional SBR reactors typically use top-feed water, which can easily disrupt existing sludge flocs, causing them to float or break up. Simultaneously, the water flow, under gravity, tends to form surface short-circuit, making it difficult to fully mix with the activated sludge at the bottom, leading to decreased reaction efficiency and uneven treatment results. Furthermore, top-feeding significantly disturbs the hydraulic flow within the reactor, which is detrimental to the stability of the sludge layer during sedimentation and decanting, thus affecting effluent quality. Utility Model Content

[0003] The purpose of this invention is to provide an SBR reactor to solve the problems existing in the prior art.

[0004] The purpose of this utility model is achieved as follows: An SBR reactor includes a tank body, with an aeration pipeline and a water distribution pipeline at the bottom of the tank body. The water distribution pipeline is located above the aeration pipeline and is equipped with a swirl aerator. The bottom of the water distribution pipeline is equipped with a water distribution hole. The swirl aerator and the water distribution hole are staggered. Both the aeration pipeline and the water distribution pipeline include an outer rectangular loop and a horizontal pipeline connecting opposite sides of the rectangular loop. A central pipeline is connected in the middle of the rectangular loop and the horizontal pipeline. The central pipeline of the aeration pipeline is connected to an air supply pipeline located at the bottom of the outer side of the tank body through an inverted U-shaped connecting pipe. The air supply pipeline is connected to a blower. The central pipeline of the water distribution pipeline is connected to an inlet pipeline located at the bottom of the outer side of the tank body. A sewage pump is installed on the inlet pipeline.

[0005] This utility model's SBR reactor, by placing the water distribution pipe above the aeration pipe at the bottom of the tank and using a bottom-inlet method instead of the traditional top-inlet, effectively avoids sewage short-circuiting, allowing sewage to be evenly distributed within the tank and fully contacting the activated sludge, significantly improving reaction efficiency. The staggered arrangement of the aerators and water distribution holes, as well as the piping system consisting of rectangular loops, horizontal pipes, and a central pipe, further optimizes water distribution and aeration effects, reduces airflow interference with the inlet water, and improves mass transfer efficiency. The inverted U-shaped connecting pipe prevents sewage from flowing back into the aeration pipe, ensuring stable operation of the aeration system. The overall structural design effectively improves upon the shortcomings of traditional top-inlet systems, significantly enhancing sewage treatment efficiency and system stability.

[0006] As a further improvement of this utility model, a floating switch level gauge is provided on the upper side of the tank body, and a decanter is installed on the side wall of the tank body. The floating switch level gauge in the tank body can monitor the liquid level changes in real time, and the decanter on the side wall facilitates precise drainage. The two work together to achieve synergy between liquid level monitoring and drainage, providing a foundation for the automated operation of the reaction tank.

[0007] As a further improvement of this utility model, the floating switch level gauge includes a low-level switch level gauge and a high-level switch level gauge. The high-level switch level gauge is linked to the decanter, and the low-level switch level gauge is linked to the sewage pump. The low and high level switches are linked to the sewage pump and decanter respectively, enabling precise control of the water inlet and outlet processes. When the level reaches the high limit, decanting automatically starts; when the level reaches the low limit, water inlet automatically stops, significantly improving operational stability and automation.

[0008] As a further improvement of this utility model, both the blower and the sewage pump include two units connected in parallel. They can serve as backups for each other, and when one unit fails, the other can be put into use immediately, avoiding interruptions in sewage treatment due to equipment downtime and improving the reliability of the system.

[0009] As a further improvement of this utility model, an overflow pipe is provided on the outside of the side wall of the pool. The upper end of the overflow pipe is connected to the inside of the pool, providing an emergency overflow path for extreme working conditions (such as rainstorms and ultra-high loads), preventing the pool from overloaded or even overflowing sewage, and enhancing the system's resistance to shock loads and operational safety.

[0010] As a further improvement of this utility model, a vent pipe is provided on the bottom side of the tank. One side of the vent pipe is connected to the hydrolysis acidification tank via a sludge return pump and a return pipe. A branch pipe leading to the sludge collection well is connected in parallel to the return pipe. This facilitates tank emptying and maintenance, and enables flexible disposal of excess sludge (returning it to the hydrolysis acidification tank for enhanced pretreatment or discharging it to the sludge collection well for concentration), optimizing sludge management and improving overall process efficiency.

[0011] As a further improvement of this utility model, a corridor is provided on the top side of the pool body, and the corridor is connected to a ladder, which facilitates the staff to carry out inspection and maintenance, and improves the safety and convenience of operation. Attached Figure Description

[0012] Figure 1 This is a top view of the SBR reactor of this utility model.

[0013] Figure 2 for Figure 1 Sectional view II.

[0014] Figure 3 for Figure 1 Sectional view II-II.

[0015] Figure 4 for Figure 1 Sectional view III-III.

[0016] The components include: 1. Tank body; 2. Aeration pipeline; 3. Water distribution pipeline; 4. Connecting pipe; 5. Air supply pipeline; 6. Blower; 7. Air lift water pipe; 8. Water inlet pipeline; 9. Sewage pump; 10. Floating switch level gauge; 11. Water outlet; 12. Overpass pipe; 13. Vent pipe; 14. Sludge return pump; and 15. Corridor. Detailed Implementation

[0017] like Figure 1-4 The SBR reactor shown includes a tank body 1, with an aeration pipe 2 and a water distribution pipe 3 at the bottom of the tank body 1. The water distribution pipe 3 is located above the aeration pipe 2, and a swirl aerator is installed on the aeration pipe 2. The bottom of the water distribution pipe 3 has water distribution holes, and the swirl aerator and water distribution holes are staggered. Both the aeration pipe 2 and the water distribution pipe 3 include an outer rectangular loop and a horizontal pipe connecting opposite sides of the rectangular loop. A central pipe is connected between the rectangular loop and the horizontal pipe. The central pipe of the aeration pipe 2 is connected to an air supply pipe 5 located at the bottom of the outer side of the tank body 1 via an inverted U-shaped connecting pipe 4. The air supply pipe 5 is connected to a blower 6. Aeration pipe 2 is also connected to air-lift water pipe 7, which is located near the side wall of tank 1 and connected to the atmosphere at its upper end. It automatically lifts and discharges condensate / leakage in the pipe using the residual pressure of aeration, preventing liquid accumulation from clogging the aeration holes or corroding the pipe. At the same time, it forms gas-liquid separation through the high-level outlet, preventing sewage backflow from damaging the aeration system. The central pipe of water distribution pipe 3 is connected to water inlet pipe 8 located at the bottom of the outer side of tank 1. A sewage pump 9 is installed on water inlet pipe 8.

[0018] A floating switch level gauge 10 is installed on the upper side of the tank body 1, and a decanter (not shown) is installed on the side wall of the tank body 1. The decanter uses a commercially available mature product, and its outlet pipe is connected to the outlet 11 to achieve automatic and stable discharge of the supernatant. The floating switch level gauge 10 in the tank body 1 can monitor the liquid level changes in real time, and the decanter on the side wall facilitates precise drainage. The two work together to achieve synergy between liquid level monitoring and drainage, providing a foundation for the automated operation of the reaction tank. In this embodiment, the floating switch level gauge 10 includes a low liquid level switch level gauge and a high liquid level switch level gauge. The high liquid level switch level gauge is linked to the decanter, and the low liquid level switch level gauge is linked to the sewage pump 9. The low and high liquid level switch level gauges are linked to the sewage pump 9 and the decanter, respectively, which can accurately control the water intake and drainage process. When the liquid level reaches the high limit, decanting is automatically started, and when the liquid level reaches the low limit, water intake is automatically stopped, which greatly improves the stability and automation of operation.

[0019] In this embodiment, both the blower 6 and the sewage pump 9 include two connected in parallel, which can serve as backups for each other. When one device fails, the other can be put into use immediately, avoiding sewage treatment interruption due to equipment shutdown and improving the reliability of the system.

[0020] like Figure 1 , Figure 4As shown, an overflow pipe 12 is provided on the outside of the side wall of the pool body 1. The upper end of the overflow pipe 12 is connected to the inside of the pool body 1, providing an emergency overflow path for extreme working conditions (such as rainstorms and ultra-high loads), preventing the pool body 1 from being overloaded or even overflowing sewage, and enhancing the system's resistance to shock loads and operational safety.

[0021] like Figure 1 As shown, a vent pipe 13 is provided on the bottom side of tank 1. One side of the vent pipe 13 is connected to the hydrolysis acidification tank via a sludge return pump 14 and a return pipe. A branch pipe leading to the sludge collection well is connected in parallel to the return pipe. This facilitates the emptying and maintenance of tank 1 and enables flexible disposal of excess sludge (returning it to the hydrolysis acidification tank for enhanced pretreatment or discharging it to the sludge collection well for concentration), optimizing sludge management and improving overall process efficiency. A corridor 15 is provided on the top side of tank 1, with a ladder connecting to it, facilitating inspection and maintenance by staff and improving operational safety and convenience.

[0022] In this embodiment, the SBR reactor uses a bottom-inlet method instead of the traditional top-inlet method by placing the water distribution pipe 3 on the upper side of the aeration pipe 2 at the bottom of the tank body 1. This effectively avoids sewage short-flow and allows the sewage to be evenly distributed in the tank and fully contact the activated sludge, significantly improving the reaction efficiency. The staggered arrangement of the aerators and water distribution holes, as well as the pipeline system consisting of rectangular loops, horizontal pipes, and central pipes, further optimizes the water distribution and aeration effects, reduces airflow interference with the inlet water, and improves mass transfer efficiency. The inverted U-shaped connecting pipe 4 prevents sewage from flowing back into the air supply pipe 5, ensuring the stable operation of the aeration system. The overall structural design effectively improves upon the shortcomings of the traditional top-inlet method, significantly enhancing the sewage treatment effect and system stability.

[0023] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A SBR reaction tank comprising a tank body, characterized in that: The bottom of the pool body is provided with an aeration pipeline and a water distribution pipeline, the water distribution pipeline is arranged on the upper side of the aeration pipeline, a cyclone aerator is arranged on the aeration pipeline, the bottom of the water distribution pipeline is provided with a water distribution hole, the cyclone aerator and the water distribution hole are arranged in a staggered manner, the aeration pipeline and the water distribution pipeline each include a peripheral rectangular loop and a horizontal pipeline connected between opposite sides of the rectangular loop, a central pipeline is connected to the middle of the rectangular loop and the horizontal pipeline, the central pipeline of the aeration pipeline is connected to a gas supply pipeline arranged on the bottom of the outer side of the pool body through a reverse U-shaped connecting pipe, the gas supply pipeline is connected to a fan, the central pipeline of the water distribution pipeline is connected to a water inlet pipeline arranged on the bottom of the outer side of the pool body, and a sewage pump is arranged on the water inlet pipeline.

2. The SBR reaction tank according to claim 1, characterized in that: A floating switch liquid level meter is arranged on the upper side of the pool body, and a water decanter is arranged on the side wall of the pool body.

3. The SBR reaction tank according to claim 2, characterized in that: The floating switch liquid level meter includes a low liquid level switch liquid level meter and a high liquid level switch liquid level meter, the high liquid level switch liquid level meter is linked to the water decanter, and the low liquid level switch liquid level meter is linked to the sewage pump.

4. The SBR reaction tank according to any one of claims 1 to 3, characterized in that: The fan and the sewage pump each include two parallel pipelines.

5. The SBR reaction tank according to any one of claims 1 to 3, characterized in that: An overpass pipe is arranged on the outer side wall of the pool body, and the upper end of the overpass pipe is in communication with the pool body.

6. The SBR reaction tank according to any one of claims 1 to 3, characterized in that: An emptying pipe is arranged on the bottom side of the pool body, one side of the emptying pipe is connected to a hydrolytic acidification pool through a sludge backflow pump and a backflow pipe, and a branch pipe leading to a sludge collecting well is connected in parallel to the backflow pipe.

7. The SBR reaction tank according to any one of claims 1 to 3, characterized in that: A corridor is arranged on the top side of the pool body, and a crawling ladder is connected to the corridor.

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