Domestic sewage backflow system
By using the return unit and auxiliary components in the domestic sewage return system, the problems of activated sludge loss and inconvenient valve replacement have been solved, improving sewage treatment efficiency and system stability, and enhancing the mixing effect of microbial strains.
Patent Information
- Application Number
- CN202422920613.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In traditional wastewater treatment systems, activated sludge is easily lost, leading to a decline in wastewater treatment efficiency. This is especially true in anaerobic tanks, where it affects microbial growth and pollutant degradation efficiency. Furthermore, the return water is not mixed quickly enough, and valve replacement is inconvenient.
A domestic sewage recirculation system was designed, including a recirculation unit, auxiliary components, and adjustment components. The recirculation unit allows some sludge water to re-enter the anaerobic tank, utilizes the sludge carrier to enhance the microbial mixing effect, and uses barrier, clamping, and sliding mechanisms to facilitate valve replacement and installation.
It improves the removal efficiency of activated sludge, enhances the mixing effect of microbial strains and pollutants, simplifies the valve replacement process, and ensures the stability and efficiency of the wastewater treatment system.
Smart Images
Figure CN223659943U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of domestic sewage treatment technology in thermal power plants, and in particular to a domestic sewage recirculation system. Background Technology
[0002] With the continuous advancement of urbanization, the discharge of domestic sewage has increased dramatically, putting increasing pressure on sewage treatment facilities. Although traditional sewage treatment systems can remove pollutants from water to a certain extent, the complex composition of sewage and the easy loss of activated sludge during the treatment process lead to a gradual decline in sewage treatment efficiency. This is especially true in important treatment units such as anaerobic tanks, where the loss of activated sludge directly affects the growth of microorganisms and the degradation efficiency of pollutants, thus impacting the stability and effectiveness of the entire sewage treatment system. Furthermore, the water returned to the sewage treatment system cannot mix and contact quickly, and valve replacement is inconvenient.
[0003] Therefore, this utility model provides a domestic sewage return system to solve the above problems. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model discloses a domestic sewage return system, including a disinfection tank effluent pipe and a return unit. The return unit includes a connecting pipe connected to the disinfection tank effluent pipe. One end of the connecting pipe is connected to a disinfection tank effluent return isolation valve via a flange. The other end of the disinfection tank effluent return isolation valve is connected to a return pipe via a flange. An anaerobic tank return pipe is connected to the return pipe. The first end of the anaerobic tank return pipe is connected to a No. 1 anaerobic tank inlet valve via a flange, and the second end of the anaerobic tank return pipe is connected to a No. 2 anaerobic tank inlet valve via a flange.
[0005] Furthermore, the reflux unit also includes an auxiliary component and an adjustment component. The auxiliary component includes a blocking mechanism for facilitating the replacement of the reflux isolation valve of the disinfection tank outlet and a clamping mechanism for facilitating the installation of the reflux isolation valve of the disinfection tank outlet. The adjustment component includes a sliding mechanism for adapting to the flow rate.
[0006] Furthermore, the clamping mechanism includes a clamping platform, on which a connecting platform is fixedly installed. A first and second U-shaped clamping clamps are detachably installed on the connecting platform. A sliding groove is provided on the side of the clamping platform away from the connecting platform, and two symmetrically distributed clamping plates are slidably installed in the sliding groove.
[0007] Furthermore, the clamping mechanism also includes a lead screw, which is rotatably mounted on the bottom end of the clamping platform. The lead screw has two symmetrical spirals with opposite directions of rotation. A connecting belt is connected to the lead screw, and a rotating shaft is connected to the connecting belt. A connecting block is rotatably mounted on the rotating shaft, and the connecting block is fixedly mounted on the connecting platform. The output end of a motor is fixedly mounted on the connecting block, and the motor is fixedly mounted on the connecting platform.
[0008] Furthermore, two blocking mechanisms are provided. Each blocking mechanism includes a rotating shaft three, which is connected by a connecting belt three. A blocking plate is fixedly installed on the rotating shaft three, and the rotating shaft three is connected to the connecting platform. A bevel gear two is fixedly installed on one end of one rotating shaft three, which meshes with a bevel gear one. The rotating shaft two is fixedly installed on the bevel gear one, and a bracket is rotatably installed on the rotating shaft two. The bracket is fixedly installed on the connecting platform.
[0009] Furthermore, the second rotating shaft is connected to the first rotating shaft via a second connecting belt, one of the third rotating shafts is connected to the return pipe, and the other of the third rotating shafts is connected to the first connecting pipe.
[0010] Furthermore, the sliding mechanism is provided in two parts. The sliding mechanism includes a fixed outer shell, a second connecting pipe is fixedly installed on the fixed outer shell, a connecting plate is slidably installed on the fixed outer shell, a small spray head and a large spray head are provided on the connecting plate, a connecting frame is fixedly installed on the connecting plate, and one end of a cylinder is fixedly installed on the connecting frame.
[0011] Furthermore, both the small and large spray heads are provided with water permeable holes. One of the fixed housings is connected to the inlet valve of the No. 1 anaerobic tank, and the other fixed housing is connected to the inlet valve of the No. 2 anaerobic tank. One cylinder is fixedly installed on the inlet valve of the No. 1 anaerobic tank, and the other cylinder is fixedly installed on the inlet valve of the No. 2 anaerobic tank.
[0012] The beneficial effects of this utility model compared with the prior art are: (1) This utility model is equipped with a reflux unit, through which some of the water with sludge is re-entered into the anaerobic tank. The sludge re-entering the anaerobic tank serves as a carrier, allowing the lost active sludge bacteria to re-enter the anaerobic tank, ensuring the growth of biological bacteria, and enhancing the mixing effect of microbial strains and pollutants in the anaerobic tank, thereby improving the sludge removal efficiency.
[0013] (2) The reflux unit also includes auxiliary components and adjustment components. The auxiliary components include a blocking mechanism for facilitating the replacement of the reflux isolation valve of the disinfection tank outlet and a clamping mechanism for facilitating the installation of the reflux isolation valve of the disinfection tank outlet. The adjustment components include a sliding mechanism for adapting to the flow rate. Through the above scheme, the blocking mechanism and the clamping mechanism work together to facilitate the replacement of the reflux isolation valve of the disinfection tank outlet and to facilitate the installation of the new reflux isolation valve of the disinfection tank outlet after the replacement of the reflux isolation valve. The sliding mechanism allows the water with sludge to come into contact with the water in the anaerobic tank more quickly at different flow rates. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of part of the circuit layout of this utility model.
[0015] Figure 2 This is a three-dimensional structural diagram of the present invention.
[0016] Figure 3 This is a schematic diagram of the auxiliary component structure of this utility model. Figure 1 .
[0017] Figure 4 This is a schematic diagram of the auxiliary component structure of this utility model. Figure 2 .
[0018] Figure 5 This is a schematic diagram of the auxiliary component of this utility model from another angle.
[0019] Figure 6 This is a schematic diagram of the adjustment component structure of this utility model.
[0020] Reference numerals: 1-Inlet valve of anaerobic tank No. 1; 2-Inlet valve of anaerobic tank No. 2; 3-Return valve of disinfection tank effluent; 4-Return pipe; 5-Return pipe of anaerobic tank; 6-Effluent pipe of disinfection tank; 7-Connecting pipe one; 8-Clamping platform; 9-Connecting platform; 10-U-shaped clamping hoop one; 11-U-shaped clamping hoop two; 12-Clamping plate; 13-Sliding groove; 14-Screw rod; 15-Motor one; 16-Rotating shaft one; 17-Connecting block; 18-Connecting belt one; 19-Connecting belt two; 20-Bracket; 21-Bevel gear one; 22-Rotating shaft two; 23-Bevel gear two; 24-Connecting belt three; 25-Rotating shaft three; 26-Blocking plate; 27-Connecting frame; 28-Connecting plate; 29-Fixed outer shell; 30-Connecting pipe two; 31-Small spray head; 32-Large spray head; 33-Cylinder. Detailed Implementation
[0021] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0022] Example: Figures 1-6 As shown, a domestic sewage recirculation system includes a disinfection tank effluent pipe 6 and a recirculation unit. The recirculation unit includes a connecting pipe 7 connected to the disinfection tank effluent pipe 6. One end of the connecting pipe 7 is connected to a disinfection tank effluent recirculation isolation valve 3 via a flange. The other end of the disinfection tank effluent recirculation isolation valve 3 is connected to a recirculation pipe 4 via a flange. An anaerobic tank recirculation pipe 5 is connected to the recirculation pipe 4. The first end of the anaerobic tank recirculation pipe 5 is connected to a first anaerobic tank inlet valve 1 via a flange, and the second end of the anaerobic tank recirculation pipe 5 is connected to a second anaerobic tank inlet valve 2 via a flange. In this embodiment, the recirculation unit is applied to a domestic sewage treatment system, which includes an equalization tank, an anaerobic tank, a primary contact oxidation tank, and a secondary contact oxidation tank. The system consists of a primary sedimentation tank, a secondary sedimentation tank, and a disinfection tank. The equalization tank is connected to the No. 1 and No. 2 anaerobic tanks. Water treated in the No. 1 and No. 2 anaerobic tanks enters the primary oxidation tank. After treatment in the primary oxidation tank, the water enters the secondary oxidation tank. After sedimentation in the primary and secondary sedimentation tanks, the water at the top enters the disinfection tank. After treatment in the disinfection tank, the water flows out through the disinfection tank effluent pipe 6. During the outflow process through the disinfection tank effluent pipe 6, a return flow unit allows some of the water containing sludge to re-enter the anaerobic tank. The sludge re-entering the anaerobic tank acts as a carrier, allowing the lost activated sludge bacteria to re-enter the anaerobic tank, ensuring the growth of the bacteria. At the same time, it enhances the mixing effect of microorganisms and pollutants in the anaerobic tank, thereby improving the sludge removal efficiency.
[0023] The reflux unit also includes auxiliary components and adjustment components. The auxiliary components include a blocking mechanism for facilitating the replacement of the reflux isolation valve 3 of the disinfection tank effluent and a clamping mechanism for facilitating the installation of the reflux isolation valve 3 of the disinfection tank effluent. The adjustment components include a sliding mechanism for adapting to the flow rate. Through the above scheme, the blocking mechanism and the clamping mechanism work together to facilitate the replacement of the reflux isolation valve 3 of the disinfection tank effluent and to facilitate the installation of the new reflux isolation valve 3 of the disinfection tank effluent after replacement. The sliding mechanism allows the water with sludge to come into contact with the water in the anaerobic tank more quickly at different flow rates.
[0024] The clamping mechanism includes a clamping platform 8, on which a connecting platform 9 is fixedly mounted. A first loop clamping hoop 10 and a second loop clamping hoop 11 are detachably mounted on the connecting platform 9. A sliding groove 13 is provided on the side of the clamping platform 8 away from the connecting platform 9, and two symmetrically distributed clamping plates 12 are slidably mounted within the sliding groove 13. The clamping mechanism also includes a lead screw 14, which is rotatably mounted on the bottom end of the clamping platform 8. The lead screw 14 has two symmetrical helical lines with opposite directions of rotation. A connecting belt 18 is connected to the lead screw 14, and a rotating shaft 16 is connected to the connecting belt 18. A connecting block 17 is rotatably mounted on the rotating shaft 16 and is fixedly mounted on the connecting platform 9. The output end of motor 15 is installed, and motor 15 is fixedly installed on the connecting platform 9. Through the above scheme, the U-shaped clamp 10 fixes the connecting platform 9 to the connecting pipe 7 and the return pipe 4, so that the connecting platform 9 is always in a stable state during use. When replacing the disinfection tank effluent return isolation valve 3, motor 15 is started. The output end of motor 15 drives the connecting belt 18 to move through the rotating shaft 16. The connecting belt 18 drives the two clamping plates 12 to move through the lead screw 14. The two clamping plates 12 move away from or close to the disinfection tank effluent return isolation valve 3, which facilitates the disassembly and installation of the disinfection tank effluent return isolation valve 3.
[0025] Two blocking mechanisms are provided, each including a rotating shaft 25 connected by a connecting belt 24. A blocking plate 26 is fixedly mounted on each rotating shaft 25. The rotating shafts 25 are connected to the connecting platform 9. A bevel gear 23 is fixedly mounted on one end of one rotating shaft 25, meshing with a bevel gear 21. A rotating shaft 22 is fixedly mounted on the bevel gear 21, and a bracket 20 is rotatably mounted on the rotating shaft 22. The bracket 20 is fixedly mounted on the connecting platform 9. The rotating shaft 22 is connected to the rotating shaft 16 via a connecting belt 19. One rotating shaft 25 is connected to the connecting pipe 7, and the other rotating shaft 25 is connected to the return pipe 4. Through this scheme, the motor 15 drives the connecting belt 19 via the rotating shaft 16. The rotating belt 19 drives the bevel gear 21 to rotate via the rotating shaft 22. The bevel gear 21 drives the rotating shaft 25 via the bevel gear 23. The rotating shaft 25 drives another rotating shaft 25 via the connecting belt 24. The rotating shaft 25 drives the blocking plate 26 to rotate. When the disinfection tank effluent return isolation valve 3 needs to be replaced, the blocking plate 26 fills the return pipe 4 and the connecting pipe 7 to prevent water from flowing through. After the disinfection tank effluent return isolation valve 3 is replaced, when the return unit needs to be used, the blocking plate 26 is in a horizontal state, and the return pipe 4 and the connecting pipe 7 are unobstructed. This prevents water from flowing out when the disinfection tank effluent return isolation valve 3 is replaced, ensuring a suitable environment for replacement and facilitating operation.
[0026] There are two sliding mechanisms. Each sliding mechanism includes a fixed housing 29, on which a connecting pipe 30 is fixedly installed. A connecting plate 28 is slidably installed on the fixed housing 29, and a small spray head 31 and a large spray head 32 are mounted on the connecting plate 28. A connecting frame 27 is fixedly installed on the connecting plate 28, and one end of a cylinder 33 is fixedly installed on the connecting frame 27. Both the small spray head 31 and the large spray head 32 have water-permeable holes. The small spray head 31 is frustoconical with a small diameter at the end with the water-permeable hole, while the large spray head 32 is cylindrical. One fixed housing 29 is connected to the inlet valve 1 of the No. 1 anaerobic tank, and the other fixed housing 29 is connected to the inlet valve 2 of the No. 2 anaerobic tank. One cylinder 33 is fixedly installed on the inlet valve 1 of the No. 1 anaerobic tank, and the other cylinder 33 is fixedly installed on the inlet valve 2 of the No. 2 anaerobic tank. At the inlet valve 2 of the anaerobic tank, according to the above scheme, when the flow rate is slow, the small spray head 31 and the connecting pipe 2 30 are concentric. The water with sludge enters the anaerobic tank return pipe 5 through the return pipe 4, and then enters the connecting pipe 2 30 through the first anaerobic tank inlet valve 1 and the second anaerobic tank inlet valve 2. It then enters the small spray head 31 through the connecting pipe 2 30 and is sprayed out through the water permeable holes on the small spray head 31, so that the water with sludge enters the anaerobic tank and makes full contact. When the flow rate is fast, the cylinder 33 is activated. The cylinder arm of the cylinder 33 drives the connecting plate 28 to slide on the fixed shell 29 through the connecting frame 27. When the large spray head 32 and the connecting pipe 2 30 are concentric, the cylinder 33 stops, and the water with sludge is sprayed out through the large spray head 32 through the connecting pipe 2 30.
[0027] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. A domestic sewage return system, comprising a disinfection tank effluent pipe (6), characterized in that: It also includes a reflux unit, which includes a connecting pipe (7) connected to the effluent pipe (6) of the disinfection tank. One end of the connecting pipe (7) is connected to the effluent reflux isolation valve (3) of the disinfection tank via a flange. The other end of the effluent reflux isolation valve (3) of the disinfection tank is connected to a reflux pipe (4) via a flange. The reflux pipe (4) is connected to an anaerobic tank reflux pipe (5). The first end of the anaerobic tank reflux pipe (5) is connected to an anaerobic tank inlet valve (1) via a flange. The second end of the anaerobic tank reflux pipe (5) is connected to an anaerobic tank inlet valve (2) via a flange.
2. The domestic sewage recirculation system as described in claim 1, characterized in that: The reflux unit also includes an auxiliary component and an adjustment component. The auxiliary component includes a blocking mechanism for facilitating the replacement of the reflux isolation valve (3) of the disinfection tank outlet and a clamping mechanism for facilitating the installation of the reflux isolation valve (3) of the disinfection tank outlet. The adjustment component includes a sliding mechanism for adapting to the flow rate.
3. A domestic sewage recirculation system as described in claim 2, characterized in that: The clamping mechanism includes a clamping platform (8), on which a connecting platform (9) is fixedly installed. A first loop clamping hoop (10) and a second loop clamping hoop (11) are detachably installed on the connecting platform (9). A sliding groove (13) is provided on the side of the clamping platform (8) away from the connecting platform (9). Two symmetrically distributed clamping plates (12) are slidably installed in the sliding groove (13).
4. A domestic sewage recirculation system as described in claim 3, characterized in that: The clamping mechanism also includes a lead screw (14), which is rotatably mounted on the bottom end of the clamping platform (8). The lead screw (14) has two symmetrical spirals with opposite directions of rotation. A connecting belt (18) is connected to the lead screw (14). A rotating shaft (16) is connected to the connecting belt (18). A connecting block (17) is rotatably mounted on the rotating shaft (16). The connecting block (17) is fixedly mounted on the connecting platform (9). The output end of a motor (15) is fixedly mounted on the connecting block (17). The motor (15) is fixedly mounted on the connecting platform (9).
5. A domestic sewage recirculation system as described in claim 2, characterized in that: Two blocking mechanisms are provided. The blocking mechanism includes a rotating shaft three (25). The two rotating shaft three (25) are connected by a connecting belt three (24). A blocking plate (26) is fixedly installed on the rotating shaft three (25). The rotating shaft three (25) is connected to the connecting platform (9). A bevel gear two (23) is fixedly installed on one end of one of the rotating shaft three (25). The bevel gear two (23) is meshed with a bevel gear one (21). A rotating shaft two (22) is fixedly installed on the bevel gear one (21). A bracket (20) is rotatably installed on the rotating shaft two (22). The bracket (20) is fixedly installed on the connecting platform (9).
6. A domestic sewage recirculation system as described in claim 5, characterized in that: The second rotating shaft (22) is connected to the first rotating shaft (16) via the second connecting belt (19), one of the third rotating shafts (25) is connected to the return pipe (4), and the other of the third rotating shafts (25) is connected to the first connecting pipe (7).
7. A domestic sewage recirculation system as described in claim 2, characterized in that: The sliding mechanism is provided in two parts. The sliding mechanism includes a fixed housing (29), on which a connecting pipe (30) is fixedly installed. A connecting plate (28) is slidably installed on the fixed housing (29). A small spray head (31) and a large spray head (32) are provided on the connecting plate (28). A connecting frame (27) is fixedly installed on the connecting plate (28). One end of a cylinder (33) is fixedly installed on the connecting frame (27).
8. A domestic sewage recirculation system as described in claim 7, characterized in that: Both the small spray head (31) and the large spray head (32) are provided with water permeable holes. One of the fixed shells (29) is connected to the No. 1 anaerobic tank inlet valve (1), and the other fixed shell (29) is connected to the No. 2 anaerobic tank inlet valve (2). One cylinder (33) is fixedly installed on the No. 1 anaerobic tank inlet valve (1), and the other cylinder (33) is fixedly installed on the No. 2 anaerobic tank inlet valve (2).