Anaerobic reactor
By setting up a third and three-phase separator in the anaerobic reactor and reflowing the separated wastewater into the water distribution system, the problem of insufficient water volume in the water distribution system when the pollutant concentration in the wastewater to be treated is solved, and overload operation of the first-stage three-phase separator and the second-stage three-phase separator are avoided, and stable wastewater treatment is achieved.
Patent Information
- Application Number
- CN202421338657.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-12
AI Technical Summary
When the concentration of pollutants in the wastewater to be treated is high, existing anaerobic reactors need to increase the amount of water in the water distribution system to increase the upflow speed, resulting in an increase in the processing volume of the first-stage three-phase separator and the second-stage three-phase separator, which can easily lead to overload operation.
By setting up a third and three-phase separator in the anaerobic reactor, the separated wastewater is reflowed into the water distribution system, and the amount of water in the water distribution system is increased, thereby increasing the upflow speed of the wastewater to be treated and avoiding increasing the processing volume of the first-stage three-phase separator and the second-stage three-phase separator.
While maintaining the upflow speed, the probability of increasing the processing volume of the first-stage three-phase separator and the second-stage three-phase separator is reduced, the risk of overload operation is reduced, and the risk of sludge acidification is reduced by diluting the wastewater through reflux.
Smart Images
Figure CN222729598U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wastewater treatment devices, in particular to an anaerobic reactor. Background Art
[0002] The anaerobic reactor is an anaerobic reactor, which includes a tank body, a water distribution system, a primary three-phase separator and a secondary three-phase separator. The water distribution system is used to spray the wastewater into the tank body at a high upstream velocity, stir and fully contact with the microorganisms in the tank body; the primary three-phase separator is arranged at the top of the tank body, and its main function is to remove the gas in the wastewater. The removed gas is discharged from the top of the tank body and then collected, recovered or burned in the biogas system; the secondary three-phase separator is arranged at the bottom of the tank body, and its main function is to separate mud and water. After the gas is removed by the primary three-phase separator, the wastewater and a small amount of sludge overflow into the secondary three-phase separator. The sludge separated and precipitated by the secondary three-phase separator is pumped back to the water distribution system, and the wastewater separated by the secondary three-phase separator is discharged outward through the drain pipe. Among them, in order to make the wastewater to be treated have sufficient upstream velocity and stirring intensity, and prevent sludge accumulation in the reactor, part of the wastewater in the riser is usually pumped back to the water distribution system, and this part of the water volume is the effluent return volume.
[0003] When the pollutant concentration in the wastewater to be treated is high, the water volume of the water distribution system needs to be increased to achieve the required upstream velocity. However, whether increasing the wastewater inlet or the effluent return volume, it will lead to an increase in the processing capacity of the primary three-phase separator and the secondary three-phase separator, which is easy to cause the primary three-phase separator and the secondary three-phase separator to overload operation, which is not conducive to wastewater treatment. Utility Model Content
[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.
[0005] To this end, an embodiment of the utility model proposes an anaerobic reactor. When the pollutant concentration in the wastewater to be treated is high, the wastewater separated by the third three-phase separator can be returned to the water distribution system to increase the water volume of the water distribution system, thereby increasing the upstream velocity of the wastewater to be treated without increasing the processing capacity of the first three-phase separator and the second three-phase separator, so that the wastewater to be treated and the sludge can be fully mixed.
[0006] The anaerobic reactor of the embodiment of the utility model comprises a tank body, a first three-phase separator, a second three-phase separator, a third three-phase separator and a water distribution system; the tank body has a reaction chamber, a drain port and an exhaust port; the first three-phase separator, the second three-phase separator and the third three-phase separator are all arranged in the reaction chamber, the gas outlet of the first three-phase separator and the gas outlet of the second three-phase separator are both connected to the exhaust port, the water outlet of the first three-phase separator is connected to the inlet of the second three-phase separator, and the water outlet of the second three-phase separator is connected to the drain port; the water distribution system comprises a nozzle, the nozzle is located in the reaction chamber, and the water outlet of the third three-phase separator is connected to the water distribution system.
[0007] In some embodiments, the third three-phase separator is arranged higher than the water distribution system.
[0008] In some embodiments, the third three-phase separator is disposed at the top of the reaction chamber.
[0009] In some embodiments, the anaerobic reactor further includes a third return pipe and a control valve, wherein both ends of the third return pipe are respectively connected to the water outlet of the third three-phase separator and the water distribution system, and the control valve is connected to the third return pipe.
[0010] In some embodiments, the anaerobic reactor further includes a flow meter connected to the third return pipe.
[0011] In some embodiments, at least one of the mud outlet and the water outlet of the second three-phase separator is connected to the water distribution system.
[0012] In some embodiments, the water distribution system includes a first pump body and a water distribution pipe. The first pump body is arranged on the outside of the tank body. The water inlet end of the first pump body is used for the entry of wastewater to be treated. The water outlet end of the first pump body is connected to the water distribution pipe, and the nozzle is connected to the water distribution pipe.
[0013] In some embodiments, at least one of the water outlet of the second three-phase separator, the mud outlet of the second three-phase separator, and the water outlet of the third three-phase separator is connected to the water inlet end of the first pump body.
[0014] In some embodiments, the anaerobic reactor also includes a second pump body, which is arranged on the outside of the tank body, and at least one of the water outlet of the second three-phase separator, the mud outlet of the second three-phase separator and the water outlet of the third three-phase separator is connected to the water inlet end of the second pump body, and the water outlet end of the second pump body is connected to the water distribution pipe.
[0015] In some embodiments, the anaerobic reactor also includes a drain pipe and a first return pipe, the water outlet of the second three-phase separator is connected to the drain outlet through the drain pipe, one end of the first return pipe is connected to the drain pipe, and the other end is connected to the water distribution system.
[0016] In the anaerobic reactor of the embodiment of the utility model, the wastewater to be treated and the microorganisms fully react in the reaction chamber and then enter the first three-phase separator. After the gas is removed by the first three-phase separator, the wastewater carries a small amount of sludge and enters the second three-phase separator. The wastewater and the sludge are separated by the second three-phase separator to achieve the treatment of the wastewater. The treated wastewater is discharged outward from the drain outlet.
[0017] In the anaerobic reactor of the embodiment of the utility model, the wastewater to be treated and the microorganisms fully react in the reaction chamber and then enter the first three-phase separator. After the gas is removed by the first three-phase separator, the wastewater carries a small amount of sludge and enters the second three-phase separator. The wastewater and the sludge are separated by the second three-phase separator to achieve the treatment of the wastewater. The treated wastewater is discharged outward from the drain outlet.
[0018] In the anaerobic reactor of the embodiment of the utility model, the wastewater to be treated and the microorganisms fully react in the reaction chamber and then enter the first three-phase separator. After the gas is removed by the first three-phase separator, the wastewater carries a small amount of sludge and enters the second three-phase separator. The wastewater and the sludge are separated by the second three-phase separator to achieve the treatment of the wastewater. The treated wastewater is discharged outward from the drain outlet.
[0019] By setting up a third three-phase separator, the third three-phase separator can separate part of the wastewater in the reaction chamber. After separating the wastewater, gas and sludge, the wastewater flows back to the water distribution system from the outlet of the third three-phase separator to increase the water volume of the water distribution system, thereby increasing the upstream velocity of the wastewater to be treated; when the pollutant concentration in the wastewater to be treated is high, the upstream velocity of the wastewater to be treated will decrease. At this time, the processing capacity of the third three-phase separator can be increased, and the water volume of the water distribution system can be further increased to maintain the required upstream velocity of the wastewater to be treated, so that the wastewater to be treated and the microorganisms in the reaction chamber are fully mixed and reacted.
[0020] In the related art, when the pollutant concentration in the wastewater to be treated is high, it is necessary to increase the wastewater inlet or the effluent return flow to increase the upstream velocity, which leads to an increase in the processing capacity of the first three-phase separator and the second three-phase separator, thereby increasing the risk of overload operation of the first three-phase separator and the second three-phase separator.
[0021] Compared with the methods in the related art, when the pollutant content of the wastewater to be treated is high, the anaerobic reactor of the embodiment of the utility model can reduce the probability of increasing the processing capacity of the first three-phase separator and the second three-phase separator while maintaining the upstream velocity, thereby reducing the risk of overload operation of the first three-phase separator and the second three-phase separator. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a simplified structural diagram of an anaerobic reactor according to an embodiment of the utility model.
[0023] Figure 2 It is a simplified structural diagram of an anaerobic reactor according to another embodiment of the utility model.
[0024] Reference numerals:
[0025] 100. Anaerobic reactor;
[0026] 1. Tank body; 11. Reaction chamber; 12. Drain outlet; 13. Exhaust outlet; 14. Water level line;
[0027] 21. A first three-phase separator; 22. A second three-phase separator; 23. A third three-phase separator;
[0028] 3. Water distribution system; 31. First pump body; 32. Water distribution pipe; 33. Nozzle;
[0029] 41. first return pipe; 42. second return pipe; 43. third return pipe; 431. control valve; 432. flow meter; 44. drain pipe;
[0030] 5. Second pump body;
[0031] 61. The first reflux main pipe; 62. The second reflux main pipe. DETAILED DESCRIPTION
[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.
[0033] like Figure 1 and Figure 2As shown, the anaerobic reactor 100 of the embodiment of the utility model includes a tank body 1, a first three-phase separator 21, a second three-phase separator 22, a third three-phase separator 23 and a water distribution system 3; the tank body 1 has a reaction chamber 11, a drain port 12 and an exhaust port 13; the first three-phase separator 21, the second three-phase separator 22 and the third three-phase separator 23 are all arranged in the reaction chamber 11, the gas outlet of the first three-phase separator 21 and the gas outlet of the second three-phase separator 22 are both connected to the exhaust port 13, the water outlet of the first three-phase separator 21 is connected to the inlet of the second three-phase separator 22, and the water outlet of the second three-phase separator 22 is connected to the drain port 12; the water distribution system 3 includes a nozzle 33, the nozzle 33 is located in the reaction chamber 11, and the water outlet of the third three-phase separator 23 is connected to the water distribution system 3.
[0034] In the anaerobic reactor 100 of the embodiment of the utility model, the wastewater to be treated and the microorganisms fully react in the reaction chamber 11 and then enter the first three-phase separator 21. After the gas is removed by the first three-phase separator 21, the wastewater carries a small amount of sludge and enters the second three-phase separator 22. The wastewater and the sludge are separated by the second three-phase separator 22 to achieve the treatment of the wastewater. The treated wastewater is discharged outward from the drain outlet 12.
[0035] By setting the third three-phase separator 23, the third three-phase separator 23 can process part of the wastewater in the reaction chamber 11. After separating the wastewater, gas and sludge, the wastewater treated by the third three-phase separator 23 flows back to the water distribution system 3 from the outlet of the third three-phase separator 23 to increase the water volume of the water distribution system 3, thereby increasing the upstream velocity of the wastewater to be treated. When the concentration of pollutants in the wastewater to be treated is high, the upstream velocity of the wastewater to be treated will decrease. At this time, the processing capacity of the third three-phase separator 23 can be increased, and the water volume of the water distribution system 3 can be further increased to maintain the required upstream velocity of the wastewater to be treated, so that the wastewater to be treated and the microorganisms in the reaction chamber 11 are fully mixed and fully reacted.
[0036] In the related art, when the pollutant concentration in the wastewater to be treated is high, it is necessary to increase the wastewater intake or the effluent return flow to increase the upstream velocity, which increases the processing capacity of the first three-phase separator 21 and the second three-phase separator 22, resulting in a higher risk of overload operation of the first three-phase separator 21 and the second three-phase separator 22.
[0037] Compared with the methods in the related art, when the pollutant content of the wastewater to be treated is high, the anaerobic reactor 100 of the embodiment of the utility model can reduce the probability of an increase in the processing capacity of the first three-phase separator 21 and the second three-phase separator 22 while maintaining the upstream velocity, thereby reducing the risk of overload operation of the first three-phase separator 21 and the second three-phase separator 22.
[0038] In addition, by returning the wastewater separated by the third three-phase separator 23 to the water distribution system 3, the wastewater to be treated can be diluted to reduce the risk of sludge acidification. Moreover, when the water supply source of the wastewater to be treated stops supplying water, the wastewater in the reaction chamber 11 can enter the water distribution system 3 through the third three-phase separator 23, and then be sprayed into the reaction chamber 11 by the nozzle 33, thereby forming an internal circulation, so that the reaction chamber 11 can be kept in a stirring state to maintain the activity of the sludge.
[0039] like Figure 1 As shown, the wastewater water level line in the tank body 1 is 14, the internal space of the tank body 1 above the water level line 14 is the top cavity, and the exhaust port 13 is connected to the top cavity; the internal space of the tank body 1 below the water level line 14 is the above-mentioned reaction chamber 11, and the first three-phase separator 21, the second three-phase separator 22, and the third three-phase separator 23 are all located in the reaction chamber 11.
[0040] It can be understood that the first three-phase separator 21, the second three-phase separator 22 and the third three-phase separator 23 are all capable of separating gas, liquid and sludge, and all have water outlets, gas outlets and mud outlets; among them, the first three-phase separator 21 is arranged at the top of the reaction chamber 11, mainly used for gas-liquid separation, the second three-phase separator 22 is arranged at the bottom of the reaction chamber 11, mainly used for cement separation, and the third three-phase separator 23 is used to separate gas, liquid and sludge.
[0041] The sludge separated by the first three-phase separator 21 and the third three-phase separator 23 is directly discharged into the reaction chamber 11; the gas separated by the first three-phase separator 21 and the third three-phase separator 23 is discharged to the outside through the exhaust port 13, and then collected, recycled or burned in the biogas system.
[0042] In some embodiments, the third three-phase separator 23 is arranged higher than the water distribution system 3 .
[0043] After the third three-phase separator 23 separates the wastewater in the reaction chamber 11, the wastewater is discharged from the water outlet of the third three-phase separator 23. Through the above arrangement, the wastewater discharged from the water outlet of the third three-phase separator 23 can flow into the water distribution system 3 under the action of gravity to increase the water volume of the water distribution system 3, thereby achieving the purpose of increasing the upstream speed of the wastewater to be treated, saving more energy and reducing production costs.
[0044] In some embodiments, the third three-phase separator 23 is disposed at the top of the reaction chamber 11 .
[0045] Since the top of the reaction chamber 11 is the area where gas is concentrated, the third three-phase separator 23 is arranged at the top of the reactor. A large amount of gas in the wastewater can be removed through the third three-phase separator 23, thereby maximizing the role of the third three-phase separator 23, reducing the processing volume of the first three-phase separator 21, and thereby increasing the service life of the first three-phase separator 21.
[0046] Optionally, the third three-phase separator 23 is connected to the inner wall of the tank body 1 via a support frame, and the third three-phase separator 23 and the second three-phase separator 22 are installed at the same height in the reaction chamber 11 .
[0047] In some embodiments, Figure 1 and Figure 2 As shown, the anaerobic reactor 100 further includes a third return pipe 43 and a control valve 431 . Both ends of the third return pipe 43 are respectively connected to the water outlet of the third three-phase separator 23 and the water distribution system 3 . The control valve 431 is connected to the third return pipe 43 .
[0048] The wastewater separated by the third three-phase separator 23 enters the third return pipe 43 from its outlet, and flows back to the water distribution system 3 via the third return pipe 43; by setting the control valve 431, the water volume in the third return pipe 43 can be individually adjusted according to the concentration of the wastewater to be treated, so as to provide the required water volume for the water distribution system 3, and the operation flexibility is high, thereby ensuring the normal operation of the water distribution system 3.
[0049] Optionally, the control valve 431 is at least one of an electric valve and a manual valve.
[0050] In some embodiments, the anaerobic reactor 100 further includes a flow meter 432 , and the flow meter 432 is connected to the third return pipe 43 .
[0051] By providing a flow meter 432 to monitor the flow condition in the third return pipe 43 , it is more convenient to individually adjust the water volume in the third return pipe 43 .
[0052] Optionally, the control valve 431 and the flow meter 432 are both arranged outside the tank body 1 .
[0053] In some embodiments, at least one of the mud outlet and the water outlet of the second three-phase separator 22 is connected to the water distribution system 3 .
[0054] By connecting the water outlet of the second three-phase separator 22 to the water distribution system 3, a part of the wastewater separated by the second three-phase separator 22 can be returned to the water distribution system 3, which can also achieve the effect of diluting the wastewater to be treated; when the pollutant content in the wastewater to be treated is not high, the third three-phase separator 23 can be shut down, and only the amount of water returned to the water distribution system 3 through the second three-phase separator 22 can make the wastewater to be treated reach the required upstream speed, thereby saving resources and reducing production costs.
[0055] The mud outlet of the second three-phase separator 22 is connected to the water distribution system 3, and the sludge separated by the second three-phase separator 22 can be re-injected into the reaction chamber 11 at a higher upstream speed through the water distribution system 3, thereby preventing the sludge separated by the second three-phase separator 22 from settling at the bottom of the reaction chamber 11 for a long time and causing the probability of sludge toxic death.
[0056] Optionally, the mud outlet and the water outlet of the third three-phase separator 23 are both connected to the water distribution system 3 .
[0057] In some embodiments, the water distribution system 3 includes a first pump body 31 and a water distribution pipe 32. The first pump body 31 is arranged on the outside of the tank body 1. The water inlet end of the first pump body 31 is used for the wastewater to be treated to enter. The water outlet end of the first pump body 31 is connected to the water distribution pipe 32, and the nozzle 33 is connected to the water distribution pipe 32.
[0058] Under the action of the first pump body 31, the wastewater to be treated enters the water distribution pipe 32, and then is sprayed into the reaction chamber 11 through the nozzle 33 at a high upstream speed, thereby achieving sufficient mixing and sufficient reaction of the wastewater to be treated and the sludge.
[0059] It can be understood that the water inlet end of the first pump body 31 is connected to the water supply source of the wastewater to be treated, and the water distribution pipe 32 passes through the side wall of the tank body 1 into the reaction chamber 11 and is connected to the nozzle 33.
[0060] In some embodiments, Figure 1 As shown, at least one of the water outlet of the second three-phase separator 22 , the mud outlet of the second three-phase separator 22 , and the water outlet of the third three-phase separator 23 is connected to the water inlet end of the first pump body 31 .
[0061] Through the above arrangement, the wastewater returned to the water distribution system 3 from the second three-phase separator 22, the sludge returned to the water distribution system 3 from the second three-phase separator 22, and the wastewater returned to the water distribution system 3 from the third three-phase separator 23 are first mixed with the wastewater to be treated, and then pumped into the water distribution pipe 32 through the first pump body 31. The start and stop control of the water distribution system 3 can be achieved only by the first pump body 31, which makes the control more convenient and the production cost lower.
[0062] Optionally, the anaerobic reactor 100 includes a first reflux main pipe 61, the water outlet of the second three-phase separator 22, the mud outlet of the second three-phase separator 22 and the water outlet of the third three-phase separator 23 are all connected to one end of the first reflux main pipe 61, and the other end of the first reflux main pipe 61 is connected to the water inlet end of the first pump body 31.
[0063] In some embodiments, Figure 2 As shown, the anaerobic reactor 100 also includes a second pump body 5, which is arranged on the outside of the tank body 1, and at least one of the water outlet of the second three-phase separator 22, the mud outlet of the second three-phase separator 22 and the water outlet of the third three-phase separator 23 is connected to the water inlet end of the second pump body 5, and the water outlet end of the second pump body 5 is connected to the water distribution pipe 32.
[0064] Through the above arrangement, the wastewater returned to the water distribution system 3 from the second three-phase separator 22, the amount of sludge returned to the water distribution system 3 from the second three-phase separator 22, and the wastewater returned to the water distribution system 3 from the third three-phase separator 23 are individually controlled by the second pump body 5, and the water inlet amount of the wastewater to be treated is individually controlled by the first pump body 31, which can improve the flexibility of the total water volume control of the water distribution system 3.
[0065] Optionally, the anaerobic reactor 100 includes a second reflux main pipe 62, the water outlet of the second three-phase separator 22, the mud outlet of the second three-phase separator 22 and the water outlet of the third three-phase separator 23 are all connected to one end of the second reflux main pipe 62, and the other end of the second reflux main pipe 62 is connected to the water inlet end of the second pump body 5.
[0066] In some embodiments, the anaerobic reactor 100 also includes a drain pipe 44 and a first return pipe 41. The outlet of the second three-phase separator 22 is connected to the drain outlet 12 through the drain pipe 44. One end of the first return pipe 41 is connected to the drain pipe 44, and the other end is connected to the water distribution system 3.
[0067] Optionally, the drain outlet 12 is arranged near the top of the reaction chamber 11. By setting the drain pipe 44, it is more convenient to connect the water outlet of the second three-phase separator 22 with the drain outlet 12; by setting the first reflux pipe 41, it is more conducive to connect the water outlet of the second three-phase separator 22 with the water distribution system 3.
[0068] Optionally, one end of the first return pipe 41 away from the drain pipe 44 extends to the outside of the tank body 1 , and a control valve 431 and a flow meter 432 are also arranged on the first return pipe 41 to individually control the amount of wastewater in the first return pipe 41 .
[0069] Optionally, the anaerobic reactor 100 further includes a second return pipe 42, one end of which is connected to the mud outlet of the second three-phase separator 22, and the other end is connected to the first return main pipe 61 or the second return main pipe 62, so as to realize the return of the sludge separated by the second three-phase separator 22. A control valve 431 and a flow meter 432 are also arranged on the second return pipe 42 to individually control the amount of sludge returned in the second return pipe 42.
[0070] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.
Claims
1. An anaerobic reactor (100), characterized in that: include: A tank body (1), wherein the tank body (1) has a reaction chamber (11), a water discharge port (12) and an exhaust port (13); a first three-phase separator (21), a second three-phase separator (22) and a third three-phase separator (23), wherein the first three-phase separator (21), the second three-phase separator (22) and the third three-phase separator (23) are all arranged in the reaction chamber (11), the gas outlet of the first three-phase separator (21) and the gas outlet of the second three-phase separator (22) are both connected to the exhaust port (13), the water outlet of the first three-phase separator (21) is connected to the inlet of the second three-phase separator (22), and the water outlet of the second three-phase separator (22) is connected to the drain port (12); A water distribution system (3), the water distribution system (3) comprising a nozzle (33), the nozzle (33) being located in the reaction chamber (11), and the water outlet of the third three-phase separator (23) being connected to the water distribution system (3).
2. The anaerobic reactor (100) according to claim 1, characterized in that: The third three-phase separator (23) is arranged higher than the water distribution system (3).
3. The anaerobic reactor (100) according to claim 2, characterized in that: The third three-phase separator (23) is arranged at the top of the reaction chamber (11).
4. The anaerobic reactor (100) according to claim 2, characterized in that: It also includes a third return pipe (43) and a control valve (431), wherein the two ends of the third return pipe (43) are respectively connected to the water outlet of the third three-phase separator (23) and the water distribution system (3), and the control valve (431) is connected to the third return pipe (43).
5. The anaerobic reactor (100) according to claim 4, characterized in that: It also includes a flow meter (432), and the flow meter (432) is connected to the third return pipe (43).
6. The anaerobic reactor (100) according to any one of claims 1 to 5, characterized in that: At least one of the mud outlet and the water outlet of the second three-phase separator (22) is connected to the water distribution system (3).
7. The anaerobic reactor (100) according to claim 6, characterized in that: The water distribution system (3) comprises a first pump body (31) and a water distribution pipe (32); the first pump body (31) is arranged outside the tank body (1); the water inlet end of the first pump body (31) is for wastewater to be treated to enter; the water outlet end of the first pump body (31) is connected to the water distribution pipe (32); and the nozzle (33) is connected to the water distribution pipe (32).
8. The anaerobic reactor (100) according to claim 7, characterized in that: At least one of the water outlet of the second three-phase separator (22), the mud outlet of the second three-phase separator (22) and the water outlet of the third three-phase separator (23) is connected to the water inlet end of the first pump body (31).
9. The anaerobic reactor (100) according to claim 7, characterized in that: The anaerobic reactor (100) further comprises a second pump body (5), the second pump body (5) being arranged on the outside of the tank body (1), at least one of the water outlet of the second three-phase separator (22), the mud outlet of the second three-phase separator (22) and the water outlet of the third three-phase separator (23) being connected to the water inlet end of the second pump body (5), and the water outlet end of the second pump body (5) being connected to the water distribution pipe (32).
10. The anaerobic reactor (100) according to claim 6, characterized in that: It also includes a drain pipe (44) and a first return pipe (41), wherein the water outlet of the second three-phase separator (22) is connected to the drain outlet (12) via the drain pipe (44), and one end of the first return pipe (41) is connected to the drain pipe (44), and the other end is connected to the water distribution system (3).