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CN-121990684-A - Anaerobic ammoxidation granular sludge loss prevention device in sewage treatment reactor

CN121990684ACN 121990684 ACN121990684 ACN 121990684ACN-121990684-A

Abstract

The invention relates to the technical field of sewage treatment, in particular to an anaerobic ammonia oxidation prevention granular sludge loss device in a sewage treatment reactor, which comprises a reactor body and a three-phase separator, wherein a granular sludge interception device is arranged between the reactor body and the three-phase separator and comprises a middle cylinder, a center block is fixedly arranged at the center of the middle cylinder, sealing bearings are uniformly arranged on the circumferential surface of the middle cylinder, positioning holes radially aligned with each sealing bearing are arranged on the outer circumferential surface of the center block, a rotating shaft is rotatably arranged between each sealing bearing and each positioning hole, a fan-shaped pore plate is arranged on each rotating shaft, and the fan-shaped pore plates are arranged in a mirror symmetry mode by taking the rotating shafts as central lines.

Inventors

  • ZHANG WENJIE
  • WEN GUAN
  • JIN YUE
  • LI HAIXIANG
  • CHEN ZHILI
  • WANG DUNQIU

Assignees

  • 桂林理工大学

Dates

Publication Date
20260508
Application Date
20240118

Claims (10)

  1. 1. An anaerobic ammoxidation granular sludge loss prevention device in a sewage treatment reactor comprises a reactor body (100) and a three-phase separator (200), and is characterized in that a granular sludge interception device (300) is arranged between the reactor body (100) and the three-phase separator (200), the granular sludge interception device (300) comprises a middle cylinder (301) connected with the top of the reactor body (100) and the bottom of the three-phase separator (200), a central block (302) is fixedly arranged at the center of the middle cylinder (301), a plurality of sealing bearings (303) are uniformly arranged on the circumferential surface of the middle cylinder (301), positioning holes radially aligned with each sealing bearing (303) are formed in the outer circumferential surface of the central block (302), a rotating shaft (304) is rotatably arranged between each group of radially aligned sealing bearings (303) and the positioning holes, the outer ends of the rotating shaft (304) extend out of the sealing bearings (303), a sector-shaped pore plate (305) is arranged on each rotating shaft (304), the sector-shaped pore plate (304) is symmetrically arranged by taking the rotating shaft (304) as a central line, and two adjacent sector-shaped pore plates (305) are overlapped and connected with each other in a horizontal lap joint state at the two mirror image lower sides of the sector-shaped pore plates (305); the rotary sealing device is characterized in that an annular track (306) is fixed on the outer circular surface of the middle cylinder body (301), a rotary ring (307) is rotatably arranged on the annular track (306), a driving assembly for realizing fixed-angle rotation of the rotary ring (307) is arranged on the middle cylinder body (301), a toggle rod (308) corresponding to each rotary shaft (304) is uniformly arranged on the rotary ring (307), the rotary shafts (304) extend out of the end portions of the sealing bearings (303) and are connected with swinging strips (309), and strip-shaped openings (310) used for penetrating through the toggle rods (308) are formed in the swinging strips (309).
  2. 2. The anaerobic ammoxidation granule sludge preventing device according to claim 1, wherein the rotating shaft (304) is hollow, the inner end of the rotating shaft (304) is sealed, the outer end of the rotating shaft is open, the lower end of the rotating shaft (304) is provided with a protruding strip (311) along the axial direction, the protruding strip (311) is internally provided with a strip-shaped cavity communicated with the hollow cavity of the rotating shaft (304), and all the side surfaces of the protruding strip (311) in the same rotating direction are provided with a row of water outlet holes (3111) which are arranged in a downward inclined manner.
  3. 3. The anaerobic ammoxidation granule sludge preventing device as claimed in claim 2, wherein the periphery of the middle cylinder (301) is provided with a circular pipe (312) at the same horizontal plane with the rotating shafts (304), the circular pipe (312) is provided with a connecting pipe portion (313) radially aligned with each rotating shaft (304), the connecting pipe portion (313) is in sealing rotation connection with the outer end of the rotating shaft (304), one end of the circular pipe (312) is connected with a conveying pipe (314), the end of the conveying pipe (314) is connected with a circulating pump (319), and the water inlet end of the circulating pump (319) is connected with the lower end of the reactor body (100) through a pipeline.
  4. 4. The anaerobic ammoxidation granular sludge preventing device as claimed in claim 1, wherein the driving assembly comprises a speed reducer (315) fixed on the outer circular surface of the middle cylinder (301), the input end of the speed reducer (315) is connected with a driving motor (316), the lower end of the driving motor (316) is connected with a driving gear (317), and the rotating ring (307) is provided with an arc-shaped rack (318) meshed with the driving gear (317).
  5. 5. The anaerobic ammoxidation granule sludge preventing device as claimed in claim 1, wherein the central block (302) is cylindrical in shape, a central column (3021) is connected to the upper surface of the central block (302), and a plurality of radial connecting rods (3022) fixedly connected with the inner wall of the lower end of the three-phase separator (200) are uniformly arranged at the upper end of the central column (3021).
  6. 6. The anaerobic ammoxidation granular sludge preventing apparatus as claimed in claim 1 wherein the outer surface of the reactor body (100) is provided with a temperature adjusting jacket, and a temperature sensor, a pH sensor and an oxygen concentration sensor are provided inside.
  7. 7. The anaerobic ammoxidation granular sludge preventing device in a sewage treatment reactor according to claim 1, wherein a water inlet distributor (101) is arranged at the bottom of the reactor body (100), a water inlet pipe (102) extending out of the reactor body (100) is connected to the end part of the water inlet distributor (101), and a water inlet pump (103) is connected to the outer end part of the water inlet pipe (102).
  8. 8. The anaerobic ammoxidation granule sludge loss prevention device in a sewage treatment reactor according to claim 7, wherein the three-phase separator (200) comprises a cover (201) which is in sealing connection with the top end of a middle cylinder (301), the lower end of the cover (201) is in a round table shape with a wide upper part and a narrow lower part, a round table-shaped guide cover (202) with a narrow upper part and a wide lower part is concentrically arranged in the cover (201), an exhaust pipe (203) which extends out of the cover (201) and is arranged at the top of the round table-shaped guide cover (202), an inclined plane annular plate (204) which is parallel to the inclined plane of the lower end of the cover (201) is connected at the lower end of the round table-shaped guide cover (202), and an overflow port is arranged on the side surface of the upper end of the cover (201).
  9. 9. The anaerobic ammoxidation granular sludge preventing device as claimed in claim 8, wherein a retaining box (205) is arranged on the outer surface of the cover (201) at the overflow port position, a filter screen (206) is obliquely arranged in the retaining box (205), and a drain pipe (207) is connected to the lower end of the outer surface of the retaining box (205).
  10. 10. The anaerobic ammoxidation granule sludge loss prevention device in a sewage treatment reactor according to claim 9, wherein a sludge collecting hopper (208) is arranged at the lower end of a interception box (205) far away from one side of a drain pipe (207), a material guiding pipe is connected at the lower end of the sludge collecting hopper (208), a gate valve (209) is arranged on the material guiding pipe, a jet pipe (210) which is obliquely downwards arranged at the lower end of the material guiding pipe and is inserted into a housing (201) is connected at the lower end of the material guiding pipe, a liquid pumping pipe (211) is connected at the top of the jet pipe (210), a tee joint (212) is connected between the lower end of the liquid pumping pipe (211) and a water inlet pipe (102) and a water inlet pump (103), and a control valve (213) is arranged at the joint of the tee joint (212) and the liquid pumping pipe (211) and the water inlet pipe (102).

Description

Anaerobic ammoxidation granular sludge loss prevention device in sewage treatment reactor Technical Field The invention relates to the technical field of sewage treatment, and particularly discloses an anaerobic ammoxidation particle sludge loss prevention device in a sewage treatment reactor. Background Anaerobic ammoxidation is used as a novel biological denitrification process, and can save carbon sources in the process of treating low-carbon-nitrogen-ratio domestic sewage, especially high-ammonia-nitrogen sewage, so that high-efficiency removal of nitrogen is realized, and the anaerobic ammoxidation is widely applied to high-ammonia-nitrogen sewage treatment. However, in the running process of the existing anaerobic ammonia oxidation reactor, the nitrogen generation amount is gradually increased along with the increase of the nitrogen volume load, and the generated nitrogen can be wrapped in the sludge or attached to the surface of the sludge, so that the density of the sludge is reduced, and then the sludge particles float upwards. The floating sludge particles can be discharged from the water outlet along with sewage, so that not only is the effective biomass in the reactor reduced, but also the pipeline is blocked when serious, and the reactor cannot normally operate. The utility model patent with the application number 2021207473232 discloses an anaerobic ammoxidation reactor for solving the problem of sludge floating, which comprises a reactor main body, wherein a water inlet and water distribution device is arranged at the inner bottom of the reactor main body, a circulation port is arranged at the top of the reactor main body, a circulation pipeline is arranged between a water inlet mixing pipe and the circulation port, a sludge selector is arranged at the position close to the top of the reactor main body, the reactor main body comprises an upper backflushing pipeline, a lower backflow pipeline, a bottom water distribution device and a top water distribution device, the backflushing pipeline and the backflow pipeline are communicated with the reactor main body, the other ends of the backflushing pipeline and the backflow pipeline are mutually connected, a backflushing pump is arranged between the backflushing pipeline and the backflow pipeline, a local internal circulation pump is arranged on the rising pipeline, the top water distribution device is connected with the backflushing pipeline, and a mud blocking net is arranged between the top water distribution device and the bottom water distribution device. According to the anaerobic ammonia oxidation reactor disclosed by the utility model, the three-phase separator is arranged at the top and the mud blocking net is arranged below the three-phase separator, so that the mud blocking net can intercept large-particle-size biological mud particles in the sewage treatment process, then small-particle-size mud particles enter the mud blocking net through the mud blocking net to carry out growth precipitation, the loss of anaerobic ammonia oxidation granular mud is avoided to a certain extent, but the intercepted large-particle-size granular mud can not be blocked on the lower surface of the mud blocking net and cannot sink along with the continuous progress of the reaction, and the precipitated granular mud in the three-phase separator cannot enter the bottom of the reactor through the mud blocking net due to the growth of the large-particle-size granular mud, and then the pipeline is blocked along with the sewage still discharged out of the reactor, so that the long-term stable operation of the reactor cannot be realized. Based on the above, the utility model provides an anaerobic ammoxidation particle sludge loss prevention device in a sewage treatment reactor, which can effectively solve the technical problems. Disclosure of Invention The invention aims to provide an anaerobic ammonia oxidation granule sludge loss prevention device in a sewage treatment reactor, so as to solve the technical problem of the anaerobic ammonia oxidation reactor for solving the problem of floating sludge in the prior art. The invention is realized by the following technical scheme: The device comprises a reactor body and a three-phase separator, wherein a particle sludge interception device is arranged between the reactor body and the three-phase separator, the particle sludge interception device comprises a middle cylinder body connected with the top of the reactor body and the bottom of the three-phase separator, a center block is fixedly arranged at the center of the middle cylinder body, a plurality of sealing bearings are uniformly arranged on the circumferential surface of the middle cylinder body, positioning holes radially aligned with each sealing bearing are formed in the outer circumferential surface of the center block, a rotating shaft is rotatably arranged between each group of radially aligned sealing bearings and positioning holes, the outer ends of the