A / O biological reaction device based on water pollution treatment

Abstract

The utility model discloses an A / O biological reaction device based on water pollution control, and the utility model discloses a small floor area, through the baffle and aerator and divide A / O biological reaction device into three reaction zones, from top to bottom vertical structure arrangement, in proper order are the aerobic zone, the anoxic zone, the effluent precipitation area, and the aerobic zone is directly linked with the anoxic zone, and is equipped with aerator in the intercommunication area, and the effluent precipitation area is located the lowermost part of device, and is separated through the baffle and upper space, and realizes nitration liquid reflux ratio control through the water segregator and the water outlet ware combination, realizes sludge non -power reflux through sludge valve I, liquid level meter, inlet water tank, inlet water pump joint control, through the water distributor recovery and utilize inlet water kinetic energy and provide hydraulic stirring action for the anoxic zone, realize sludge suspension and wastewater mixing. The utility model discloses an integrated vertical structure arrangement form, reduces the energy consumption, guarantees wastewater treatment effect.

Description

Technical Field

[0001] It relates to the field of environmental protection technology, specifically the field of water pollution control, and is an A / O biological reactor based on water pollution control. Background Technology

[0002] The most widely used and economical method for wastewater treatment is biological treatment, which has undergone nearly a century of evolution and changes, and has now become the most critical technology for water pollution control. The A / O treatment process based on nitrification and denitrification principles is most widely used in the field of biological nitrogen removal from wastewater. Chinese patent CN116332376A discloses an invention patent for a microbial-based water pollution treatment device and method. It features two outlet pipes communicating with the inner cavity of a storage cylinder located on the lower part of the outer surface of the cylinder. A mounting groove penetrating the inner cavity of the storage cylinder is formed in the middle of the lower end of the cylinder. An inner sleeve is provided within the inner cavity of the storage cylinder, and the lower end of the inner sleeve extends into the mounting groove. The sewage entering the inner sleeve can be separated into solid and liquid components by centrifugation, and then discharged separately for treatment. Additionally, the stirring mechanism can rotate 180° repeatedly in a single cycle, causing the stirring blades to mix the sewage and EM bacteria while simultaneously beating the inner sleeve. The vibration and the water flow carried by the beating clear the first and second discharge holes, allowing the inner sleeve to operate continuously. This is a device primarily for treating sewage, and its structure differs from the purpose of this invention. Currently, integrated A / O wastewater treatment systems on the market include equipment housings, influent pumps, aeration blowers, anoxic zone mixers, nitrification liquor return pumps, sludge return pumps, and control systems. Examples include integrated wastewater treatment equipment from Weifang Hengyuan Environmental Water Treatment Equipment Co., Ltd. and Zhucheng Xinshuo Environmental Protection Technology Co., Ltd., as well as the Best series products from Yunnan Hexu Environmental Technology Co., Ltd. These systems all employ a horizontally arranged structure, utilizing power equipment to achieve the return and mixing of nitrification liquor and sludge. An internal return pump in the aerobic zone facilitates nitrification liquor return, while an external return pump returns sludge from the sedimentation tank. A mechanical mixer in the anoxic zone suspends sludge and mixes wastewater. However, these systems generally suffer from large footprints, numerous power units, high operating costs, and operational difficulties. Therefore, developing A / O biological treatment systems that are compact, highly integrated, energy-efficient, and easy to operate, to solve the environmental challenges of wastewater treatment for owners, has been a long-standing goal for water treatment engineers. Summary of the Invention

[0003] The purpose of this utility model patent is to provide an A / O biological reactor for water pollution treatment. It overcomes the drawbacks of traditional A / O devices, reduces equipment footprint, and lowers operating costs.

[0004] The technical solution adopted to solve the above-mentioned technical problems is: An A / O biological reactor for water pollution treatment is disclosed. It comprises an inlet pump 1, an inlet 2, an outlet 3, an air inlet 4, a sludge discharge outlet 5, a base 6, a cone 7, a cylinder 8, a baffle 9, a water collector 10, a water distributor 11, a support I 12, an aerator 13, a support II 14, a water divider 15, a circulation pipe 16, a downcomer 17, an upcomer 18, an outlet 19, an aeration blower 20, an inlet flow meter 21, a sludge flow meter 22, an inlet valve 23, a sludge valve I 24, a sludge valve II 25, a level gauge 26, a control box 27, and an inlet tank 28. Its key feature is that the A / O biological reactor is divided into three reaction zones by the baffle 9 and the aerator 13, arranged vertically from top to bottom: an aerobic zone, an anoxic zone, and an effluent sedimentation zone. The oxygen zone and the anoxic zone are directly connected, and an aerator is provided in the connected area. The effluent sedimentation zone is located at the bottom of the device and is separated from the upper space by a partition. The nitrification liquid is returned without power by the water distributor 15. The nitrification liquid return ratio is controlled by the combination of the water distributor and the effluent device. The sludge is returned without power by the combined control of the sludge valve I 24, the level gauge 26, the inlet tank 28, and the inlet pump 1. The water distributor 11 recovers and utilizes the kinetic energy of the inlet water to provide hydraulic stirring for the anoxic zone, thereby achieving sludge suspension and wastewater mixing. The inlet tank 28 provided outside the cylinder 8 is connected to the cone 7 through the sludge valve I 24 and the sludge flow meter 22. The level gauge 26 is provided in the inlet tank (28). The feedback signal of the level gauge 26 is transmitted to the control box 27 to control the opening degree of the sludge valve I 24 and the speed of the inlet pump, thereby realizing the regulation of sludge return flow and inlet water volume. A water collector is installed at the top of the effluent sedimentation zone, below the partition. The water collector 10 includes a water collection ring pipe 33, a branch pipe I 34, and a water collection port 43. The water collector 10 is located at the top of the effluent sedimentation zone, 100-300mm below the partition 9. The water collector 10 has evenly distributed water collection ports 43 with an opening diameter of 5-10mm, which are connected to the effluent sedimentation zone to achieve uniform water collection. The water collection load is 10-30L / M·S. The water collection ring pipe 33 is connected to the riser pipe 18 through the branch pipe 34 and is connected to the inlet 44 of the effluent 19.

[0005] The water distributor (15) at the top of the aerobic zone consists of an umbrella cap, a lift pipe, a water distribution plate, and a water distribution trough. The water distribution trough 32 is located above the umbrella cap 29, and the two are connected by a lift pipe 30. The ratio of the diameter of the lift pipe 30 to the diameter of the umbrella cap 29 is 1:10 to 20. Both the lift pipe 30 and the water distribution trough 32 are equipped with water distribution plates 31. The water distribution plates 31 divide the water distribution trough into a nitrification liquid return trough 41 and a settling water trough 42. The volume ratio of the two troughs is 1:2 to 6. The nitrification liquid return trough 41 is connected to the anoxic zone through a circulation pipe 16. The settling water trough 42 is connected to the effluent sedimentation zone through a downcomer pipe 17. The lower part of the umbrella cap 29 is open and connected to the aerobic zone.

[0006] The water outlet 19 at the top of the aerobic zone includes a water outlet trough 38, a water outlet sleeve 39, and an adjusting rod 40. The water outlet 19 is located at the upper liquid level of the aerobic zone. The inlet 44 of the water outlet 19 is connected to the water outlet sedimentation zone through the riser pipe 18. The movable water outlet sleeve 39 is fitted outside the inlet 44 and is moved up and down by the adjusting rod 40. The inlet 44 is connected to the water outlet trough 38 through the water outlet sleeve 39. The water outlet trough 38 is connected to the outlet 3. The upper end of the movable water outlet sleeve 39 is connected to the adjusting rod 40. The height of the water outlet sleeve 39 can be adjusted by the adjusting rod 40 to control and regulate the liquid level and nitrification liquid return flow in the reactor.

[0007] At the bottom of the anoxic zone, a water distributor is installed above the baffle plate. The water distributor 11 includes a main water distribution pipe 35, a branch pipe II 36, and a water distribution head 37. The water distributor 11 is located at the bottom of the anoxic zone, within a range of 150-300mm above the baffle plate 9. The inlet of the water distributor 11 is connected to the inlet 2, and the outlet of the water distribution head 37 is connected to the anoxic zone. The water distribution head 37 is installed at an angle of 30° to 45° to ensure that the horizontal component of the water jet from the water distribution head 37 is greater than or equal to its vertical component.

[0008] The sludge valve I24 is an electric screw valve, an electric diaphragm valve, or an electric gate valve.

[0009] The advantages of this invention are: it changes the traditional A / O device's horizontal arrangement of the anoxic zone, aerobic zone, and effluent sedimentation zone, and innovatively adopts an integrated vertical structure arrangement, with the effluent sedimentation zone, anoxic zone, and aerobic zone arranged sequentially from bottom to top, reducing the footprint by more than 40% compared to the traditional A / O biological reactor. Based on the nitrification and denitrification principle of the A / O process, an anoxic and aerobic zone are established within the cylinder by adjusting the installation height of the aerators, with the aerobic zone at the top and the anoxic zone at the bottom. This integrated vertical structure arrangement has three advantages: first, it creates a plug flow upward, ensuring wastewater treatment efficiency; second, it ensures the smooth discharge of denitrification gas from the anoxic zone; and third, it fully utilizes the water level potential energy to achieve non-powered recirculation of nitrified liquid and sludge, thereby reducing energy consumption. A circulation pipe is used to achieve non-powered recirculation of nitrified liquid from the aerobic zone to the anoxic zone, and the recirculation ratio is controlled by a water distributor and an outlet device. A water distributor is used to achieve sludge recirculation and uniform water distribution, while simultaneously hydraulically agitating the anoxic zone to ensure thorough mixing of the nitrified liquid and influent for denitrification. The generated gas is discharged through the upper aerobic zone. Based on the vertical flow sedimentation principle, pressure sedimentation is used, employing a water collector, riser pipe, and outlet device to achieve clarified effluent. Settled sludge is collected through a cone hopper, and excess sludge is discharged. Attached Figure Description

[0010] Appendix Figure 1 This is a general diagram of an A / O bioreactor system based on water pollution control.

[0011] Appendix Figure 2This is a cross-sectional view of AA.

[0012] Appendix Figure 3 This is a cross-sectional view of BB.

[0013] Appendix Figure 4 This is a CC cross-sectional view.

[0014] Appendix Figure 5 This is a cross-sectional view of DD.

[0015] Appendix Figure 6 This is a schematic diagram of a water distributor.

[0016] Appendix Figure 7 Diagram of the water outlet.

[0017] Appendix Figure 8 Schematic diagram of water distributor and water collector.

[0018] Appendix Figure 9 Control principle diagram of the device.

[0019] Control Logic (a) Stop the pump when the liquid level is too low, reduce the speed of the inlet pump when the liquid level is low, open the sludge valve I to a larger degree, and start the inlet pump at the power frequency when the liquid level is medium.

[0020] (b) When the liquid level is too high, the sludge valve I is closed; when the liquid level is high, the sludge valve I is closed to a small degree; when the liquid level is medium, the sludge valve I is opened to the designed degree. Detailed Implementation

[0021] The specific implementation methods are further described below with reference to the embodiments and accompanying drawings. Example

[0022] like Figure 1As shown, an A / O biological reactor based on water pollution treatment is provided, including an inlet pump 1, an inlet 2, an outlet 3, an air inlet 4, a sludge discharge outlet 5, a base 6, a cone 7, a cylinder 8, a baffle 9, a water collector 10, a water distributor 11, a support I 12, an aerator 13, a support II 14, a water distributor 15, a circulation pipe 16, a downcomer 17, an ascender 18, a water outlet 19, an aeration blower 20, an inlet flow meter 21, a sludge flow meter 22, an inlet valve 23, a sludge valve I 24, a sludge valve II 25, a level gauge 26, and a control unit. The system includes a tank 27, an inlet tank 28, and a water distributor 15 consisting of an umbrella cap 29, a riser pipe 30, a water distribution plate 31, and a water distribution trough 32. The water distribution plate 31 divides the water distribution trough 32 into a nitrification liquid return trough 41 and a settling tank 42. The water collector 10 includes a water collection ring pipe 33, a branch pipe 34, and a water collection port 43. The water distributor 11 includes a main water distribution pipe 35, a branch pipe 36, and a water distribution head 37. The water outlet 19 includes an outlet trough 38, an outlet sleeve 39, and an adjusting rod 40. The sludge valve I 24 is an electric screw valve, an electric diaphragm valve, or an electric gate valve. The A / O biological reactor is vertically divided into three reaction zones by a baffle 9 and an aerator 13, from top to bottom: an aerobic zone, an anoxic zone, and an effluent sedimentation zone.The water separator 15 is located at the upper liquid level of the aerobic zone and is fixedly installed on the support II 14 via the water distribution trough 32. Both ends of the support II 14 are fixed to the wall panels of the cylinder 8. The lower part of the water separator 15 is connected to the aerobic zone via the umbrella cap 29 and the riser pipe 30. The diameter ratio of the riser pipe 30 to the umbrella cap 29 is 1:10-20 to ensure effective recovery and utilization of gas kinetic energy. The riser pipe 30 is connected to the water distribution trough 32. Both the riser pipe 30 and the water distribution trough 32 are equipped with water distribution plates 31 to divide the nitrified liquid back into the water distribution trough. The system consists of two parts: a flow channel 41 and a settling tank 42, with a volume ratio of 1:2 to 6. The nitrification liquid return channel 41 is connected to the anoxic zone via a circulation pipe 16, with the outlet of the circulation pipe 16 located 500-700mm above the distributor 11. The settling tank 42 is connected to the effluent sedimentation zone via a downcomer 17, with the outlet of the downcomer 17 located 400-800mm above the cone 7 in the effluent sedimentation zone. The distributor 11 is located at the bottom of the anoxic zone, 150-300mm above the baffle 9. 1. The inlet is connected to the water inlet 2. The outlet of the water distributor 11, the water distribution head 37, is connected to the anoxic zone. The water distribution head 37 is installed at an angle of 30° to 45° to ensure that the horizontal component of the water jet from the water distribution head 37 is greater than or equal to its vertical component. The water collector 10 is located at the top of the effluent sedimentation zone, 100-300mm below the baffle 9. The water collection ring pipe 33 is evenly distributed with water collection ports 43, with an opening diameter of 5-10mm, and is connected to the effluent sedimentation zone to achieve uniform water collection. The water collection load is 10-30L / m·s. The water collection ring pipe 33 is connected to the riser pipe 18 through the branch pipe 34 and is connected to the inlet 44 of the water outlet 19. The water outlet 19 is located at the upper liquid level in the aerobic zone and is fixedly installed on the bracket II 14. The inlet 44 of the water outlet 19 is connected to the water outlet 38 through the movable water outlet sleeve 39. The water outlet 38 is connected to the water outlet 3. The upper end of the movable water outlet sleeve 39 is connected to the adjusting rod 40. The height of the water outlet sleeve 39 can be adjusted by adjusting the adjusting rod 40, thereby controlling the liquid level in the reactor and the nitrification liquid return flow. The wastewater to be treated enters the inlet tank 28 at a suitable flow rate controlled by the inlet valve 23 and the inlet flow meter 21. After mixing with the return sludge controlled by the sludge valve I 24 and the sludge flow meter 22 in the inlet tank 28, the inlet pump 1 is controlled by the control box 27 through the level gauge to pump the mud-water mixture in the inlet tank 28 into the anoxic zone through the inlet 2. The water distributor 11 achieves uniform water distribution and full recovery of the inlet kinetic energy. The inlet kinetic energy is used to provide a balanced hydraulic mixing force for the anoxic zone, thereby ensuring a sufficient swirling mixing effect on the mud-water mixture at the bottom of the anoxic tank. The inlet water is fully mixed with the nitrified liquid flowing out of the circulation pipe 16, providing sufficient carbon source for microorganisms to carry out denitrification reaction in the anoxic zone. The generated nitrogen gas rises and is discharged through the aerobic zone. Wastewater in the anoxic zone flows upwards and enters the aerobic zone through support I12. Aeration blower 20 compresses air and provides sufficient oxygen to the aerobic zone through aerator 13. Ammonia nitrogen in the wastewater is converted into nitrate nitrogen under the action of nitrifying bacteria. At the same time, organic matter is degraded by microorganisms, thus removing organic pollutants from the wastewater.The wastewater, after pollutant removal, rises into the top water divider 15 of the aerobic zone. The gas in the wastewater within the horizontal projection area of ​​the umbrella cap 29 is collected and enters the riser pipe 30, which generates an air lift effect on the mud-water mixture in the aerobic zone. The mud-water mixture enters the water distribution tank 32 through the air lift pipe. Part of it flows back to the bottom of the anoxic zone through the nitrification liquid return tank 41 and the circulation pipe 16, while the other part flows into the effluent sedimentation zone through the settling tank 42 and the downcomer pipe 17. The mud-water mixture entering the sedimentation zone undergoes separation under gravity. The sludge settles into the cone hopper 7, and is discharged through the sludge discharge port 5 using the device's water level potential energy. A portion of the sludge enters the collection tank via sludge valve I 24 to mix with the influent, achieving sludge recirculation. The remaining sludge is discharged from the device via sludge valve II 25. The clear water at the top of the sedimentation zone enters the collection ring pipe 33 through the collection port 43 of the water collector 10, then flows through the branch pipe 34 and riser pipe 18 into the effluent collector 19, through the effluent sleeve 39 and effluent trough 38, and finally exits the device through the effluent port 3. Thus, with only one pump and one aeration fan, through innovative structural layout, the system's own potential energy is fully utilized to achieve non-powered recirculation of nitrification liquid and sludge, as well as hydraulic mixing in the anoxic zone, ensuring efficient and low-energy wastewater treatment that meets standards.

Claims

1. An A / O biological reactor based on water pollution control, comprising an inlet pump (1), an inlet (2), an outlet (3), an air inlet (4), a sludge outlet (5), a base (6), a cone (7), a cylinder (8), a baffle (9), a water collector (10), a water distributor (11), a support I (12), an aerator (13), a support II (14), a water distributor (15), a circulation pipe (16), a downcomer (17), an upcomer (18), a water outlet (19), an aeration blower (20), an inlet flow meter (21), a sludge flow meter (22), an inlet valve (23), a sludge valve I (24), a sludge valve II (25), a level gauge (26), a control box (27), and an inlet tank (28); characterized in that: The A / O biological reactor is divided into three reaction zones by a partition (9) and an aerator (13), arranged vertically from top to bottom: aerobic zone, anoxic zone, and effluent sedimentation zone. The aerobic zone and the anoxic zone are directly connected, and an aerator (13) is installed in the connecting area. The effluent sedimentation zone is located at the bottom of the device and is separated from the upper space by a partition (9). The nitrification liquid is returned without power by a water distributor (15). The nitrification liquid return ratio is controlled by the combination of the water distributor (15) and the effluent device (19). The sludge is returned without power by the combination of sludge valve I (24), level gauge (26), inlet tank (28), and inlet pump (1). The inlet water energy is recovered and utilized by the water distributor (11) to provide hydraulic stirring for the anoxic zone, so as to achieve sludge suspension and wastewater mixing. The inlet tank (28) provided outside the cylinder (8) is connected by sludge valve I (24). The sludge flow meter (22) is connected to the cone bucket (7). A level gauge (26) is installed in the inlet tank (28). The feedback signal of the level gauge (26) is transmitted to the control box (27) to control the opening degree of the sludge valve I (24) and the speed of the inlet pump, thereby realizing the regulation of sludge return flow and inlet water volume. A water collector is installed at the top of the effluent sedimentation zone, below the partition. The water collector (10) includes a water collection ring pipe (33), a branch pipe I (34) and a water collection ring. The water collector (10) is located at the top of the water sedimentation zone, 100-300mm below the partition (9). The water collector (10) has water collection ports (43) evenly distributed, with an opening diameter of 5-10mm. It is connected to the water sedimentation zone to achieve uniform water collection. The water collection load is 10-30L / M·S. The water collection ring pipe (33) is connected to the riser pipe (18) through the branch pipe I (34) and is connected to the inlet (44) of the water outlet (19).

2. The A / O bioreactor based on water pollution treatment according to claim 1, characterized in that: The water distributor (15) at the top of the aerobic zone consists of an umbrella cap, a lift pipe, a water distribution plate, and a water distribution trough. The water distribution trough (32) is located above the umbrella cap (29), and the two are connected by a lift pipe (30). The diameter of the lift pipe (30) is 1:10 to 20 of the diameter of the umbrella cap (29). Both the lift pipe (30) and the water distribution trough (32) are equipped with water distribution plates (31). The water distribution plates (31) divide the water distribution trough into a nitrification liquid return trough (41) and a settling water trough (42). The volume ratio of the two troughs is 1:2 to 6. The nitrification liquid return trough (41) is connected to the anoxic zone through a circulation pipe (16). The settling water trough (42) is connected to the effluent sedimentation zone through a downcomer (17). The umbrella cap (29) has an opening at the bottom, which is connected to the aerobic zone.

3. The A / O bioreactor based on water pollution treatment according to claim 1, characterized in that: The water outlet (19) at the top of the aerobic zone includes a water outlet trough (38), a water outlet sleeve (39), and an adjusting rod (40). The water outlet (19) is located at the upper liquid level of the aerobic zone. The inlet (44) of the water outlet (19) is connected to the water outlet sedimentation zone through the riser pipe (18). The movable water outlet sleeve (39) is fitted outside the inlet (44). The water outlet sleeve is moved up and down by the adjusting rod (40). The inlet (44) is connected to the water outlet trough (38) through the water outlet sleeve (39). The water outlet trough (38) is connected to the water outlet (3). The upper end of the movable water outlet sleeve (39) is connected to the adjusting rod (40). The height of the water outlet sleeve (39) can be adjusted by the adjusting rod (40) to control and regulate the liquid level and nitrification liquid return flow in the reactor.

4. The A / O bioreactor based on water pollution treatment according to claim 1, characterized in that: At the bottom of the anoxic zone, a water distributor is provided above the partition. The water distributor (11) includes a main water distribution pipe (35), a branch pipe II (36), and a water distribution head (37). The water distributor (11) is located at the bottom of the anoxic zone, within 150-300mm above the partition (9). The inlet of the water distributor (11) is connected to the inlet (2), and the outlet of the water distribution head (37) of the water distributor (11) is connected to the anoxic zone. The water distribution head (37) is installed at an angle of 30° to 45° to ensure that the horizontal component of the water jet from the water distribution head (37) is greater than or equal to its vertical component.

5. The A / O bioreactor based on water pollution treatment according to claim 1, characterized in that: The sludge valve I (24) is an electric screw valve, an electric diaphragm valve, or an electric gate valve.

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