Integrated domestic sewage denitrification and decarbonization equipment

Abstract

The utility model discloses integrated domestic sewage denitrification and decarbonization equipment relates to sewage treatment equipment technical field. This integrated domestic sewage denitrification and decarbonization equipment, including the box, the inner wall fixed mounting of box has first baffle, second baffle, third baffle, and first baffle, second baffle, third baffle will the inside of box be divided into anaerobic tank, anoxic tank, aerobic tank, sedimentation tank from front to back. This integrated domestic sewage denitrification and decarbonization equipment, through the stirring structure, can drive first stirring frame and second stirring frame synchronous rotation, can simultaneously to anaerobic tank and anoxic tank stirring, through the pollution extraction subassembly, can the sludge in sedimentation tank is transported to anaerobic tank, also can to the sludge of sedimentation tank extra discharge, realized one machine two uses, through the structure optimization and process cooperation, reduced the manufacturing cost of equipment, on the denitrification and phosphorus removal efficiency, system stability and long -term cost control surpasses AOA process comprehensively.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment equipment technology, and in particular to an integrated domestic sewage denitrification and carbon removal equipment. Background Technology

[0002] Domestic sewage is wastewater discharged from residents' daily lives, mainly originating from residential and public buildings, such as residences, government offices, schools, hospitals, shops, public places, and industrial enterprise restrooms. The pollutants contained in domestic sewage are mainly organic matter.

[0003] For example, Chinese patent document CN115259576B, "Integrated AOA Device and Control Method for Deep Nitrogen and Phosphorus Removal of Wastewater," belongs to the field of wastewater treatment equipment technology. Domestic wastewater first enters a pretreatment unit where solid-liquid separation is achieved through physical means. The supernatant then enters a biological treatment unit where carbon, nitrogen, and phosphorus are removed through biological treatment methods. Finally, it enters a deep treatment unit where carbon, nitrogen, phosphorus, and suspended solids are further removed through physical, chemical, or biological methods. The biological treatment unit employs AOA process technology. Based on the above device, and according to actual operating experience, the system design and control method achieve the goal of deep nitrogen and phosphorus removal from low C / N domestic wastewater. It is suitable for decentralized wastewater treatment, requires no external carbon source, and features energy saving and consumption reduction.

[0004] During operation, the aforementioned wastewater treatment equipment employs multiple sets of stirring devices to agitate the wastewater in the anaerobic and anoxic tanks. Additionally, it uses two sets of sludge pumps to return and discharge the sludge from the sedimentation tank, significantly increasing the equipment's cost. Utility Model Content

[0005] The purpose of this invention is to provide an integrated domestic sewage denitrification and carbon removal device to solve the problems and defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated domestic sewage denitrification and carbon removal equipment, including a housing, with a first partition, a second partition, and a third partition fixedly installed on the inner wall of the housing. The first partition, the second partition, and the third partition divide the interior of the housing into an anaerobic tank, an anoxic tank, an aerobic tank, and a sedimentation tank from front to back. A first sewage pipe is fixedly installed on the front side of the housing, a second sewage pipe is fixedly installed on the first partition, a third sewage pipe is fixedly installed on the second partition, and a fourth sewage pipe is fixedly installed on the third partition. A drain pipe is fixedly installed on the rear side of the housing. The equipment also includes a stirring structure installed on the anaerobic tank and the anoxic tank, which simultaneously stirs the anaerobic tank and the anoxic tank. An oxygen supply structure is installed on the aerobic tank to supply oxygen to the aerobic tank. A sludge suction component is installed on one side of the housing for sludge return and discharge. A circulation component is installed on one side of the housing to transport sewage from the aerobic tank to the anaerobic tank.

[0007] Preferably, the stirring structure includes a first stirring frame, a second stirring frame, a frame, a motor, a first synchronous pulley, a second synchronous pulley, a synchronous belt, and a cover plate. The cover plate is placed on the top of the housing. The first and second stirring frames are rotatably mounted on the cover plate. The frame is fixedly mounted on the top outer wall of the cover plate. The motor is fixedly mounted on the top outer wall of the frame. The first synchronous pulley is fixedly mounted on the outer wall of the second stirring frame. The second synchronous pulley is fixedly mounted on the outer wall of the first stirring frame. The synchronous belt is sleeved on the first and second synchronous pulleys and meshes with both of them. The output shaft of the motor is fixedly mounted on the top of the second stirring frame, which can drive the first and second stirring frames to rotate synchronously, enabling simultaneous stirring of the anaerobic and anoxic tanks.

[0008] Preferably, the oxygen supply structure includes a first support plate, a fan, and an air outlet pipe. The first support plate is fixedly installed on one outer wall of the box, the fan is fixedly installed on the top of the first support plate, and the air outlet pipe is fixedly installed on the bottom inner side of the box. One end of the air outlet pipe passes through one side of the box and is fixedly connected to the output end of the fan.

[0009] Preferably, the sludge pumping assembly includes a second support plate, a sludge pump, and a three-way pipe. The second support plate is fixedly installed on the outer wall of the other side of the housing, the sludge pump is fixedly installed on the top of the second support plate, the main end of the three-way pipe is fixedly connected to the output end of the sludge pump, one branch end of the three-way pipe passes through the other side of the housing and communicates with the anaerobic tank, and the input end of the sludge pump passes through the other side of the housing and communicates with the sedimentation tank. It can transport sludge in the sedimentation tank to the anaerobic tank and can also discharge excess sludge from the sedimentation tank.

[0010] Preferably, the circulation assembly includes a third support plate, a circulation pump, and a circulation pipe. The third support plate is fixedly installed on the outer wall of the other side of the tank, the circulation pump is fixedly installed on the top of the third support plate, one end of the circulation pipe is fixedly connected to the output end of the sludge pump, the other end of the circulation pipe passes through the other side of the tank and communicates with the anoxic tank, and the input end of the circulation pump passes through the other side of the tank and communicates with the aerobic tank.

[0011] Preferably, the two ends of the three-way pipe are equipped with solenoid valve A and solenoid valve B.

[0012] Preferably, both sides of the cover plate are threaded with fixing bolts, and one end of the fixing bolt is in contact with the outer wall of the box.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This integrated domestic sewage denitrification and carbon removal equipment, through its stirring structure, can drive the first and second stirring frames to rotate synchronously, simultaneously stirring both the anaerobic and anoxic tanks. The sludge pumping component can transport sludge from the sedimentation tank to the anaerobic tank and also discharge excess sludge from the sedimentation tank, achieving dual functionality. Through structural optimization and process synergy, the equipment's manufacturing cost has been reduced, and it comprehensively surpasses the AOA process in terms of denitrification and phosphorus removal efficiency, system stability, and long-term cost control. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure on the other side;

[0018] Figure 3 This is a sectional view of the housing of this utility model;

[0019] Figure 4 This is a diagram of a wastewater treatment system.

[0020] Reference numerals: 1. Box body; 2. First partition; 3. Second partition; 4. Third partition; 5. First sewage pipe; 6. Second sewage pipe; 7. Third sewage pipe; 8. Fourth sewage pipe; 9. Drainage pipe; 10. First mixing frame; 11. Second mixing frame; 12. Frame; 13. Motor; 14. First synchronous pulley; 15. Second synchronous pulley; 16. Synchronous belt; 17. Fixing bolt; 18. First support plate; 19. Fan; 20. Air outlet pipe; 21. Second support plate; 22. Sludge pump; 23. T-pipe; 24. Third support plate; 25. Circulation pump; 26. Circulation pipe; 27. Cover plate. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Please see Figures 1-4This utility model provides a technical solution: an integrated domestic sewage denitrification and carbon removal equipment, including a box 1. The inner wall of the box 1 is fixedly installed with a first partition 2, a second partition 3, and a third partition 4. The first partition 2, the second partition 3, and the third partition 4 divide the interior of the box 1 from front to back into an anaerobic tank, an anoxic tank, an aerobic tank, and a sedimentation tank. A first sewage pipe 5 is fixedly installed on the front side of the box 1, a second sewage pipe 6 is fixedly installed on the first partition 2, a third sewage pipe 7 is fixedly installed on the second partition 3, and a fourth sewage pipe 8 is fixedly installed on the third partition 4. A drain pipe 9 is fixedly installed on the rear side of the box 1. It also includes a stirring structure set on the anaerobic tank and the anoxic tank, which stirs the anaerobic tank and the anoxic tank at the same time. An oxygen supply structure is set on the aerobic tank to supply oxygen to the aerobic tank. A sludge suction component is set on one side of the box 1 for sludge return and discharge. A circulation component is set on one side of the box 1 to transport sewage in the aerobic tank to the anaerobic tank.

[0023] Furthermore, the stirring structure includes a first stirring frame 10, a second stirring frame 11, a frame 12, a motor 13, a first synchronous pulley 14, a second synchronous pulley 15, a synchronous belt 16, and a cover plate 27. The cover plate 27 is placed on the top of the housing 1. The first stirring frame 10 and the second stirring frame 11 are rotatably mounted on the cover plate 27. The frame 12 is fixedly mounted on the top outer wall of the cover plate 27. The motor 13 is fixedly mounted on the top outer wall of the frame 12. The first synchronous pulley 14 is fixedly mounted on the outer wall of the second stirring frame 11. The second synchronous pulley 15 is fixedly mounted on the first stirring frame 11. The outer wall of the mixing frame 10 has a synchronous belt 16 fitted onto the first synchronous pulley 14 and the second synchronous pulley 15. The synchronous belt 16 meshes with both the first synchronous pulley 14 and the second synchronous pulley 15. The output shaft of the motor 13 is fixedly installed on the top of the second mixing frame 11. When the motor 13 is started, the output shaft of the motor 13 drives the second mixing frame 11 and the first synchronous pulley 14 to rotate. The first synchronous pulley 14 drives the second synchronous pulley 15 and the first mixing frame 10 to rotate through the synchronous belt 16. The first mixing frame 10 and the second mixing frame 11 respectively stir the anaerobic tank and the sedimentation tank.

[0024] Furthermore, the oxygen supply structure includes a first support plate 18, a fan 19, and an air outlet pipe 20. The first support plate 18 is fixedly installed on one side of the outer wall of the housing 1, the fan 19 is fixedly installed on the top of the first support plate 18, and the air outlet pipe 20 is fixedly installed on the inner bottom of the housing 1. One end of the air outlet pipe 20 passes through one side of the housing 1 and is fixedly connected to the output end of the fan 19.

[0025] Furthermore, the sludge pumping assembly includes a second support plate 21, a sludge pump 22, and a three-way pipe 23. The second support plate 21 is fixedly installed on the outer wall of the other side of the housing 1. The sludge pump 22 is fixedly installed on the top of the second support plate 21. The main end of the three-way pipe 23 is fixedly connected to the output end of the sludge pump 22. One branch end of the three-way pipe 23 passes through the other side of the housing 1 and communicates with the anaerobic tank. The input end of the sludge pump 22 passes through the other side of the housing 1 and communicates with the sedimentation tank. It can transport the sludge in the sedimentation tank to the anaerobic tank and can also discharge excess sludge from the sedimentation tank.

[0026] Furthermore, the circulation assembly includes a third support plate 24, a circulation pump 25, and a circulation pipe 26. The third support plate 24 is fixedly installed on the outer wall of the other side of the tank 1. The circulation pump 25 is fixedly installed on the top of the third support plate 24. One end of the circulation pipe 26 is fixedly connected to the output end of the sludge pump 22. The other end of the circulation pipe 26 passes through the other side of the tank 1 and communicates with the anoxic tank. The input end of the circulation pump 25 passes through the other side of the tank 1 and communicates with the aerobic tank.

[0027] Furthermore, solenoid valve A and solenoid valve B are installed at the two ends of the three-way pipe 23.

[0028] Furthermore, both sides of the cover plate 27 are threaded with fixing bolts 17, one end of which contacts the outer wall of the housing 1.

[0029] Working principle: Wastewater enters the anaerobic tank through the first wastewater pipe 5. The control system opens solenoid valve A and starts sludge pump 22. Sludge pump 22 extracts phosphorus-containing sludge from the sedimentation tank. The phosphorus-containing sludge is injected into the anaerobic tank through sludge pump 22 and three-way pipe 23. The wastewater mixes with the high-phosphorus sludge. Polyphosphate-accumulating bacteria in the high-phosphorus sludge release phosphorus, and some organic matter undergoes ammoniation. The wastewater from the anaerobic tank flows into the anoxic tank through the second wastewater pipe 6. The circulation pump 25 is started, extracting nitrate nitrogen from the aerobic tank. The nitrate nitrogen enters the anoxic tank through circulation pump 25 and circulation pipe 26, where it is denitrified by denitrifying bacteria. The denitrified wastewater enters the aerobic tank through the third wastewater pipe 7. The blower 19 is started, extracting air. The wastewater is injected into the aerobic tank through blower 19 and air outlet pipe 20, aerating the denitrified wastewater. The organic matter in the wastewater is oxidized and decomposed by aerobic bacteria, and ammonia nitrogen is converted into nitrate nitrogen by nitrifying bacteria. Polyphosphate-accumulating bacteria absorb excess phosphorus to form high-phosphorus sludge. The wastewater enters the sedimentation tank through the fourth wastewater pipe 8 for sedimentation, and the clear liquid is discharged through the drain pipe 9. The control system starts the sludge pump 22 and solenoid valve B. Excess sludge is discharged through the sludge pump 22 and three-way pipe 23. The motor 13 is started, and the output shaft of the motor 13 drives the second stirring frame 11 and the first synchronous wheel 14 to rotate. The first synchronous wheel 14 drives the second synchronous wheel 15 and the first stirring frame 10 to rotate through the synchronous belt 16. The first stirring frame 10 and the second stirring frame 11 stir the anaerobic tank and the sedimentation tank respectively.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An integrated domestic sewage denitrification and carbon removal equipment, comprising a box (1), wherein a first partition (2), a second partition (3), and a third partition (4) are fixedly installed on the inner wall of the box (1), the first partition (2), the second partition (3), and the third partition (4) dividing the interior of the box (1) from front to back into an anaerobic tank, an anoxic tank, an aerobic tank, and a sedimentation tank; a first sewage pipe (5) is fixedly installed on the front side of the box (1); a second sewage pipe (6) is fixedly installed on the first partition (2); a third sewage pipe (7) is fixedly installed on the second partition (3); a fourth sewage pipe (8) is fixedly installed on the third partition (4); and a drain pipe (9) is fixedly installed on the rear side of the box (1). The equipment is characterized in that... Also includes: The stirring structure is installed on the anaerobic tank and the anoxic tank, and the stirring structure stirs the anaerobic tank and the anoxic tank at the same time. An oxygen supply structure is installed in the aerobic tank to supply oxygen to the aerobic tank. The sludge suction assembly is located on one side of the housing (1). The sludge suction assembly is used for sludge return and discharge. The circulation component is installed on one side of the tank (1) and is used to transport the wastewater in the aerobic tank to the anaerobic tank.

2. The integrated domestic sewage denitrification and carbon removal equipment according to claim 1, characterized in that: The stirring structure includes a first stirring frame (10), a second stirring frame (11), a frame (12), a motor (13), a first synchronous pulley (14), a second synchronous pulley (15), a synchronous belt (16), and a cover plate (27). The cover plate (27) is placed on the top of the housing (1). The first stirring frame (10) and the second stirring frame (11) are rotatably mounted on the cover plate (27). The frame (12) is fixedly mounted on the top outer wall of the cover plate (27). The motor (13) is fixedly mounted on the top outer wall of the cover plate (27). The first synchronous pulley (14) is fixedly installed on the outer wall of the second stirring frame (11), and the second synchronous pulley (15) is fixedly installed on the outer wall of the first stirring frame (10). The synchronous belt (16) is sleeved on the first synchronous pulley (14) and the second synchronous pulley (15). The synchronous belt (16) meshes with the first synchronous pulley (14) and the second synchronous pulley (15). The output shaft of the motor (13) is fixedly installed on the top of the second stirring frame (11).

3. The integrated domestic sewage denitrification and carbon removal equipment according to claim 2, characterized in that: The oxygen supply structure includes a first support plate (18), a fan (19) and an air outlet pipe (20). The first support plate (18) is fixedly installed on one side of the outer wall of the box (1). The fan (19) is fixedly installed on the top of the first support plate (18). The air outlet pipe (20) is fixedly installed on the bottom of the inner side of the box (1). One end of the air outlet pipe (20) passes through one side of the box (1) and is fixedly connected to the output end of the fan (19).

4. The integrated domestic sewage denitrification and carbon removal equipment according to claim 3, characterized in that: The sludge pumping assembly includes a second support plate (21), a sludge pump (22), and a three-way pipe (23). The second support plate (21) is fixedly installed on the outer wall of the other side of the box (1). The sludge pump (22) is fixedly installed on the top of the second support plate (21). The main end of the three-way pipe (23) is fixedly connected to the output end of the sludge pump (22). One branch end of the three-way pipe (23) passes through the other side of the box (1) and communicates with the anaerobic tank. The input end of the sludge pump (22) passes through the other side of the box (1) and communicates with the sedimentation tank.

5. The integrated domestic sewage denitrification and carbon removal equipment according to claim 4, characterized in that: The circulation assembly includes a third support plate (24), a circulation pump (25), and a circulation pipe (26). The third support plate (24) is fixedly installed on the outer wall of the other side of the box (1). The circulation pump (25) is fixedly installed on the top of the third support plate (24). One end of the circulation pipe (26) is fixedly connected to the output end of the sludge pump (22). The other end of the circulation pipe (26) passes through the other side of the box (1) and communicates with the anoxic tank. The input end of the circulation pump (25) passes through the other side of the box (1) and communicates with the aerobic tank.

6. The integrated domestic sewage denitrification and carbon removal equipment according to claim 5, characterized in that: The two ends of the three-way pipe (23) are equipped with solenoid valve A and solenoid valve B.

7. The integrated domestic sewage denitrification and carbon removal equipment according to claim 6, characterized in that: Both sides of the cover plate (27) are threaded with fixing bolts (17), and one end of the fixing bolts (17) is in contact with the outer wall of the box (1).

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