Gas stripping type internal circulation anaerobic-aerobic integrated sewage treatment device

Abstract

The invention relates to the technical field of sewage treatment, and discloses a gas stripping type internal circulation anaerobic-aerobic integrated sewage treatment device, which is characterized in that an EGSB (Expanded Granular Sludge Bed) reaction tank, an Anammox reaction tank and an aerobic treatment tank are arranged in an equilateral triangle shape, and are detachably mounted by an integrated bracket assembly; a water inlet system is mounted on one side of the EGSB reaction tank, a gas stripping circulating system is mounted on the other side of the EGSB reaction tank, and a water outlet system is mounted on one side of the aerobic treatment tank. The gas stripping circulation system uses biogas as power to realize internal circulation, so that the energy consumption is reduced, and the overall operation cost is reduced; compared with the traditional process of combining a plurality of independent treatment units, the integrated design has the advantages that the occupied area is greatly reduced, and the device is suitable for being applied to regions with shortage of land resources; meanwhile, anaerobic granular sludge in the EGSB reaction tank and a biological carrier in the Anammox reaction tank provide a good growth environment for microorganisms, and the stability and activity of the microorganisms are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly relates to an air-lift type internal circulation anaerobic-aerobic integrated sewage treatment device. Background Art

[0002] In the existing sewage treatment processes, although the expanded granular sludge bed anaerobic reactor (EGSB) can efficiently treat high-concentration organic wastewater, it has deficiencies in nitrogen removal; although the anaerobic ammonium oxidation (Anammox) technology can efficiently remove nitrogen, it has strict requirements for operating conditions and the treatment efficiency is limited when used alone. Traditional anaerobic-aerobic integrated sewage treatment devices often have complex structures, large floor areas, high operating costs, and the treatment effects are difficult to meet the increasingly strict environmental protection requirements. Therefore, there is an urgent need for a new type of sewage treatment device to solve these problems. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides an air-lift type internal circulation anaerobic-aerobic integrated sewage treatment device, which has the advantages of efficiently degrading organic matter in sewage and synchronously removing nitrogen pollutants, reducing operating costs, reducing the floor area, and improving the adaptability of the device to fluctuations in water quality and quantity, and solves the above problems.

[0004] To achieve the above purpose of efficiently degrading organic matter in sewage and synchronously removing nitrogen pollutants, reducing operating costs, reducing the floor area, and improving the adaptability of the device to fluctuations in water quality and quantity, the present invention provides the following technical solution: An air-lift type internal circulation anaerobic-aerobic integrated sewage treatment device, comprising an EGSB reaction tank, an Anammox reaction tank, and an aerobic treatment tank. The EGSB reaction tank, the Anammox reaction tank, and the aerobic treatment tank are arranged in an equilateral triangle. The EGSB reaction tank, the Anammox reaction tank, and the aerobic treatment tank are detachably installed by an integrated support assembly. An inlet water system is installed on one side of the EGSB reaction tank, and an air-lift circulation system is installed on the other side of the EGSB reaction tank. An outlet water system is installed on one side of the aerobic treatment tank.

[0005] Preferably, a partition plate with a diversion hole is fixedly installed inside the EGSB reaction tank. The partition plate divides the EGSB reaction tank from bottom to top into a first anaerobic reaction chamber and a second anaerobic reaction chamber. A first gas-solid-liquid three-phase separator is fixedly installed above the interior of the first anaerobic reaction chamber, and a second gas-solid-liquid three-phase separator is fixedly installed above the interior of the second anaerobic reaction chamber. A biogas chamber is formed between the second gas-solid-liquid three-phase separator and the EGSB reaction tank.

[0006] Preferably, the water inlet system includes a water inlet pipeline. One end of the water inlet pipeline is fixedly installed with a centralized box. The periphery of the centralized box is fixedly communicated with branch water distribution pipes. The top of the branch water distribution pipes is fixedly communicated with nozzles. The top of the other end of the water inlet pipeline is fixedly installed with a return water pipe. The top of the return water pipe is fixedly installed with a gas-liquid separator. One end of the gas-liquid separator is communicated with an EGSB reaction tank through a biogas collection pipe. An electric control valve is fixedly installed in the middle section of the return water pipe.

[0007] Preferably, the air-lift circulation system includes an air-lift pipe. The bottom end of the air-lift pipe is inserted into the bottom side of the first anaerobic reaction chamber. The top end of the air-lift pipe is inserted into the side of the biogas chamber. A circulation delivery pump is fixedly installed in the middle section of the air-lift pipe.

[0008] Preferably, the water outlet system includes a water outlet pipeline and a water outlet valve. The water outlet valve is interconnected with an aerobic treatment tank through the water outlet pipeline.

[0009] Preferably, a groove seat is fixedly installed on the bottom wall of the EGSB reaction tank. A servo reduction motor is embedded in the groove seat. The output end of the servo reduction motor is fixedly installed with a scraping bar. A sharp cone is fixedly installed on the top of the scraping bar. A convex plate extending to the groove seat is fixedly installed on the bottom of the scraping bar. A sedimentation box is fixedly installed at the bottom semi-circular hole of the groove seat. A sludge extraction pump is fixedly installed at the bottom of the sedimentation box. Sealing rotating seats are fixedly installed on the side walls on both sides of the sedimentation box. A steel wire rope is movably installed between the two sealing rotating seats. One end of the steel wire rope is fixedly installed with a motor reduction gear. Circular plates are fixedly installed on the outer wall of the steel wire rope at equal intervals. Disturbing soft strips are fixedly installed around the circular plates.

[0010] Preferably, the integrated support assembly includes a single-layer top seat and a double-layer bottom seat. Fixed trays are fixedly installed on the opposite surfaces of the single-layer top seat and the double-layer bottom seat. A cross-shaped limiting rod is fixedly installed at the bottom of the single-layer top seat. The cross-shaped limiting rod is inserted into a limiting sleeve. The bottom of the limiting sleeve is fixedly installed on the surface of the double-layer bottom seat.

[0011] Preferably, mounting seats are fixedly installed on the side edges of the opposite surfaces of the single-layer top seat and the double-layer bottom seat. Screws are rotatably installed inside the mounting seats. The outer sides of the screws are threadedly connected with screw sleeves. The screw sleeves are embedded at both ends of a frame.

[0012] Preferably, both ends of the EGSB reaction tank, the Anammox reaction tank and the aerobic treatment tank are embedded in the fixed trays. The groove seat is embedded inside the double-layer bottom seat.

[0013] Preferably, the Anammox reactor is interconnected with the second anaerobic reaction chamber through a pipeline, the aerobic treatment tank is interconnected with the Anammox reactor through a pipeline, an anaerobic granular sludge bed is provided at the bottom of the first anaerobic reaction chamber, a biological carrier suitable for the growth of anaerobic ammonia-oxidizing bacteria is arranged inside the Anammox reactor, anaerobic ammonia-oxidizing bacteria are attached to the surface of the biological carrier, and an aeration device and biological fillers are arranged inside the aerobic treatment tank.

[0014] Compared with the prior art, the present invention provides an air-lift internal circulation anaerobic-aerobic integrated sewage treatment device, which has the following beneficial effects: The air-lift internal circulation anaerobic-aerobic integrated sewage treatment device combines the high-load organic matter treatment ability of EGSB with the high-efficiency nitrogen removal ability of Anammox. At the same time, the sewage is further purified through the aerobic treatment area, achieving efficient removal of organic matter and nitrogen pollutants in the sewage. The treatment effect is significantly better than that of traditional processes; The Anammox reaction does not require an external carbon source, reducing the chemical agent cost; The air-lift circulation system uses biogas as the power to achieve internal circulation, reducing energy consumption and thus reducing the overall operating cost; The integrated design significantly reduces the floor area compared with the traditional process of combining multiple independent treatment units, and is suitable for application in areas with tight land resources; The air-lift internal circulation ensures the full mixing of sewage and sludge, enhancing the adaptability of the device to fluctuations in water quality and quantity; At the same time, the anaerobic granular sludge in the EGSB reaction tank and the biological carrier in the Anammox reaction tank provide a good growth environment for microorganisms, improving the stability and activity of microorganisms; In the air-lift internal circulation anaerobic-aerobic integrated sewage treatment device, sewage enters the centralized box, branch water distribution pipes and nozzles through the water inlet pipeline, and is evenly dispersed to the anaerobic granular sludge bed at the bottom of the EGSB reaction tank. In the first anaerobic reaction chamber, the sewage is fully mixed with the anaerobic granular sludge, and the organic matter begins to degrade under the action of anaerobic microorganisms. The generated biogas rises to the first gas-liquid-solid three-phase separator for separation. The separated sewage and sludge enter the second anaerobic reaction chamber through the diversion holes on the partition board for further degradation of organic matter; The sewage flowing out of the second gas-liquid-solid three-phase separator at the top of the second anaerobic reaction chamber contains ammonia nitrogen and part of nitrite nitrogen, and enters the Anammox reaction tank through the connecting pipeline. Under the action of anaerobic ammonium oxidation bacteria on the surface of the biological carrier, the anaerobic ammonium oxidation reaction occurs, converting ammonia nitrogen and nitrite nitrogen into nitrogen gas and discharging it; The biogas is collected through the biogas collection pipe. Using the air-lift pipe and the circulation transfer pump, the sewage and sludge mixture at the bottom of the EGSB reaction tank is impacted to the upper part of the EGSB reaction tank to achieve internal circulation; The sewage treated by the Anammox reaction tank enters the aerobic treatment tank, and the aeration device fills the water with air. Aerobic microorganisms grow on the surface of the biological filler to further treat the sewage and remove the remaining organic matter and ammonia nitrogen; The treated qualified sewage is discharged through the water outlet pipeline and the water outlet valve.During operation, the water quality parameters are regularly monitored, and the operating parameters such as the influent flow rate and aeration volume are adjusted according to the monitoring results to ensure the stable and efficient operation of the device; for this air-lift internal circulation anaerobic-aerobic integrated sewage treatment device, the sludge deposited at the bottom of the EGSB reaction tank is rotated by a servo reduction motor with a scraping bar and a convex plate, and then the sludge on the bottom wall of the EGSB reaction tank and the bottom of the groove seat will be scraped into the sediment box. The wire rope is rotated by a motor reducer, and the round plate and the disturbance soft strip on the wire rope are rotated, and then the accumulated sludge in the sediment box is loosened. After that, the sediment sludge can be pumped out by a sludge extraction pump, and this process realizes the discharge treatment of ineffective anaerobic granular sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic three-dimensional structure diagram of the present invention; Figure 2 is a schematic structure diagram of the present invention after removing the single-layer top seat; Figure 3 is a schematic sectional structure diagram of the EGSB reaction tank of the present invention; Figure 4 is a schematic structure diagram of the influent system of the present invention; Figure 5 is a schematic sectional structure diagram of the EGSB reaction tank of the present invention; Figure 6 is a schematic sectional structure diagram of the EGSB reaction tank of the present invention again; Figure 7 is an exploded structure diagram of the groove seat, scraping bar and sediment box of the present invention; Figure 8 is a schematic structure diagram of the sediment box, wire rope and motor reducer of the present invention; Figure 9 is a schematic structure diagram of the integrated support assembly of the present invention; Figure 10 is a schematic structure diagram of the cross-shaped limiting rod, limiting sleeve and frame of the present invention; Figure 11 is an exploded structure diagram of the screw, nut sleeve and frame of the present invention.

[0016] In the figure: 10. EGSB reaction tank; 20. Anammox reaction tank; 30. Aerobic treatment tank; 40. Integrated support assembly; 50. Influent system; 60. Air-lift circulation system; 70. Effluent system; 101. Partition board; 102. First gas-solid-liquid three-phase separator; 103. Second gas-solid-liquid three-phase separator; 104. Groove seat; 105. Servo reduction motor; 106. Scraping bar; 107. Convex plate; 108. Sediment box; 109. Sludge extraction pump; 110. Sealed rotating seat; 111. Wire rope; 112. Motor reducer; 113. Round plate; 114. Disturbance soft strip; 401, single-layer top seat; 402, double-layer base; 403, fixed tray; 404, cross-shaped limiting rod; 405, limiting sleeve; 406, mounting seat; 407, screw rod; 408, screw sleeve; 409, frame; 501, water inlet pipeline; 502, centralized box; 503, branch water distribution pipe; 504, nozzle; 505, return water pipe; 506, gas-liquid separator; 507, biogas collection pipe; 601, air-lift pipe; 602, circulation transfer pump; 701, water outlet valve. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figure 1-2 , an air-lift type internal circulation anaerobic-aerobic integrated sewage treatment device, including an EGSB reaction tank 10, an Anammox reaction tank 20 and an aerobic treatment tank 30. The EGSB reaction tank 10, the Anammox reaction tank 20 and the aerobic treatment tank 30 are arranged in an equilateral triangle. The EGSB reaction tank 10, the Anammox reaction tank 20 and the aerobic treatment tank 30 are detachably installed by an integrated support assembly 40. A water inlet system 50 is installed on one side of the EGSB reaction tank 10, and an air-lift circulation system 60 is installed on the other side of the EGSB reaction tank 10. A water outlet system 70 is installed on one side of the aerobic treatment tank 30.

[0019] Please refer to Figure 3 , a partition plate 101 with a diversion hole is fixedly installed inside the EGSB reaction tank 10. The partition plate 101 divides the EGSB reaction tank 10 from bottom to top into a first anaerobic reaction chamber and a second anaerobic reaction chamber. A first gas-solid-liquid three-phase separator 102 is fixedly installed above the inside of the first anaerobic reaction chamber, and a second gas-solid-liquid three-phase separator 103 is fixedly installed above the inside of the second anaerobic reaction chamber. A biogas chamber is formed between the second gas-solid-liquid three-phase separator 103 and the EGSB reaction tank 10. In the EGSB reaction tank 10, sewage is fully mixed with anaerobic granular sludge. Under the action of anaerobic microorganisms, most of the organic matter is degraded, and biogas is generated at the same time.

[0020] Please refer to Figure 1-3, The Anammox reactor 20 is interconnected with the second anaerobic reaction chamber through a pipeline. The aerobic treatment tank 30 is interconnected with the Anammox reactor 20 through a pipeline. The bottom of the first anaerobic reaction chamber is provided with an anaerobic granular sludge bed. Inside the Anammox reactor 20, a biological carrier suitable for the growth of anaerobic ammonium-oxidizing bacteria is arranged. Anaerobic ammonium-oxidizing bacteria are attached to the surface of the biological carrier. The sewage containing ammonia nitrogen and nitrite nitrogen flowing out of the EGSB reactor 10 enters the Anammox reactor 20, and an anaerobic ammonium oxidation reaction occurs under the action of anaerobic ammonium-oxidizing bacteria, converting ammonia nitrogen and nitrite nitrogen into nitrogen gas and discharging it. An aeration device and biological packing are arranged inside the aerobic treatment tank 30. The sewage treated by the Anammox reactor 20 enters the aerobic treatment tank 30, and air is filled into the water through the aeration device to provide oxygen for aerobic microorganisms. The aerobic microorganisms grow and reproduce on the surface of the biological packing, further degrading the residual organic matter and ammonia nitrogen in the sewage to make the effluent quality meet the standards. Please refer to Figure 3-4 , The water inlet system 50 includes a water inlet pipeline 501. One end of the water inlet pipeline 501 is fixedly installed with a centralized box 502. Branch water distribution pipes 503 are fixedly connected to the periphery of the centralized box 502. Nozzles 504 are fixedly connected to the top of the branch water distribution pipes 503. A water return pipe 505 is fixedly installed at the top of the other end of the water inlet pipeline 501. A gas-liquid separator 506 is fixedly installed at the top of the water return pipe 505. One end of the gas-liquid separator 506 is connected to the EGSB reactor 10 through a biogas collection pipe 507. An electric control valve is fixedly installed in the middle section of the water return pipe 505. The water inlet pipeline 501 is connected to an external sewage source. The nozzle 504 is located at the bottom of the EGSB reactor 10. The nozzle 504 adopts a multi-point uniform water distribution structure, which can evenly disperse the sewage to the bottom of the EGSB reactor 10, enabling the sewage to fully contact the anaerobic granular sludge. Please refer to Figure 3 , The air-lift circulation system 60 includes an air-lift pipe 601. The bottom end of the air-lift pipe 601 is inserted into the side of the bottom of the first anaerobic reaction chamber. The top end of the air-lift pipe 601 is inserted into the side of the biogas chamber. A circulation delivery pump 602 is fixedly installed in the middle section of the air-lift pipe 601. The relative molecular mass of biogas is less than that of air and it will float, which can mix some sludge and sewage evenly. Utilizing the lifting force generated by biogas, the sewage and sludge mixture at the bottom of the EGSB reactor 10 is lifted to the upper part of the EGSB reactor 10 through the air-lift pipe 601 to realize the internal circulation of sewage and sludge, enhance the mass transfer effect, and improve the reaction rate.

[0021] Please refer to Figure 2 , The water outlet system 70 includes a water outlet pipeline and a water outlet valve 701. The water outlet valve 701 is interconnected with the aerobic treatment tank 30 through the water outlet pipeline, and is used to discharge the treated qualified sewage from the device. Please refer to Figure 5-8, a groove seat 104 is fixedly installed on the bottom wall of the EGSB reaction tank 10. A servo reduction motor 105 is embedded inside the groove seat 104. The output end of the servo reduction motor 105 is fixedly installed with a scraping strip 106. A sharp cone is fixedly installed on the top of the scraping strip 106. A convex plate 107 extending to the groove seat 104 is fixedly installed at the bottom of the scraping strip 106. A sedimentation box 108 is fixedly installed at the bottom semi-circular hole of the groove seat 104. A sludge extraction pump 109 is fixedly installed at the bottom of the sedimentation box 108. The sediment sludge can be extracted and discharged through the sludge extraction pump 109, and the discharge treatment of ineffective anaerobic granular sludge is realized in this process.

[0022] Please refer to Figure 5-8 , sealing rotating seats 110 are fixedly installed on the side walls on both sides of the sedimentation box 108. A steel wire rope 111 is movably installed between the two sealing rotating seats 110. One end of the steel wire rope 111 is fixedly installed with a motor reduction gear 112. Circular plates 113 arranged at equal intervals are fixedly installed on the outer wall of the steel wire rope 111. Disturbing soft strips 114 are fixedly installed around the circular plates 113. The motor reduction gear 112 drives the steel wire rope 111 to rotate, and the circular plates 113 and disturbing soft strips 114 on the steel wire rope 111 rotate, thereby loosening the accumulated sludge in the sedimentation box 108.

[0023] Please refer to Figure 9-11 , the integrated support assembly 40 includes a single-layer top seat 401 and a double-layer base 402. The groove seat 104 is embedded inside the double-layer base 402. Fixed trays 403 are fixedly installed on the opposite surfaces of the single-layer top seat 401 and the double-layer base 402. Both ends of the EGSB reaction tank 10, the Anammox reaction tank 20 and the aerobic treatment tank 30 are embedded in the fixed trays 403. A cross-shaped limiting rod 404 is fixedly installed at the bottom of the single-layer top seat 401. The cross-shaped limiting rod 404 is inserted into the limiting sleeve 405. The bottom of the limiting sleeve 405 is fixedly installed on the surface of the double-layer base 402.

[0024] Please refer to Figure 9-11 , mounting seats 406 are fixedly installed on the sides of the opposite surfaces of the single-layer top seat 401 and the double-layer base 402. A screw rod 407 is rotatably installed inside the mounting seat 406. A nut sleeve 408 is threadedly connected to the outside of the screw rod 407. The nut sleeve 408 is embedded at both ends of the frame 409. By driving the nut sleeves 408 on both sides to rotate on the screw rod 407 through the frame 409, the two screw rods 407 approach each other, so that the single-layer top seat 401 and the double-layer base 402 approach each other to fix the three tanks.

[0025] During use, sewage enters the centralized box 502, the branch water distribution pipe 503, and the nozzle 504 through the water inlet pipeline 501, and is evenly dispersed into the anaerobic granular sludge bed at the bottom of the EGSB reactor 10. In the first anaerobic reaction chamber, the sewage is fully mixed with the anaerobic granular sludge, and the organic matter begins to degrade under the action of anaerobic microorganisms. The generated biogas rises to the first gas-liquid-solid three-phase separator 102 for separation. The separated sewage and sludge enter the second anaerobic reaction chamber through the diversion holes on the partition plate 101 for further degradation of the organic matter. The sewage flowing out of the second gas-liquid-solid three-phase separator 103 at the top of the second anaerobic reaction chamber contains ammonia nitrogen and partial nitrite nitrogen, and enters the Anammox reactor 20 through the connecting pipeline. The anaerobic ammonium oxidation reaction occurs under the action of anaerobic ammonium oxidizing bacteria on the surface of the biological carrier, converting ammonia nitrogen and nitrite nitrogen into nitrogen gas and discharging it. The biogas is collected through the biogas collection pipe 507. Using the air lift pipe 601 and the circulation pump 602, the sewage and sludge mixture at the bottom of the EGSB reactor 10 is impacted to the upper part of the EGSB reactor 10 to achieve internal circulation. The sewage treated by the Anammox reactor 20 enters the aerobic treatment tank 30, and the aeration device fills the water with air. Aerobic microorganisms grow on the surface of the biological filler to further treat the sewage and remove the residual organic matter and ammonia nitrogen. The qualified treated sewage is discharged through the water outlet pipeline and the water outlet valve 701. During the operation process, the water quality parameters are regularly monitored, and the operation parameters such as the influent flow rate and the aeration volume are adjusted according to the monitoring results to ensure the stable and efficient operation of the device. The sludge deposited at the bottom of the EGSB reactor 10 is rotated by the servo reduction motor 105 with the scraping bar 106 and the convex plate 107, and then the sludge on the bottom wall of the EGSB reactor 10 and the bottom of the groove seat 104 is scraped into the sedimentation box 108. The wire rope 111 is rotated by the motor reducer 112, and the round plate 113 and the disturbance soft strip 114 on the wire rope 111 are rotated, and then the accumulated sludge in the sedimentation box 108 is loosened. After that, the sedimented sludge can be extracted and discharged by the sludge extraction pump 109. This process realizes the discharge treatment of ineffective anaerobic granular sludge.

[0026] In summary, the air-lift internal circulation anaerobic-aerobic integrated sewage treatment device combines the high-load organic matter treatment capacity of EGSB with the high-efficiency nitrogen removal capacity of Anammox. At the same time, the sewage is further purified through the aerobic treatment area, achieving efficient removal of organic matter and nitrogen pollutants in the sewage. The treatment effect is significantly better than that of traditional processes. The Anammox reaction does not require an external carbon source, reducing the chemical agent cost. The air-lift circulation system 60 uses biogas as power to achieve internal circulation, reducing energy consumption and thus reducing the overall operating cost. The integrated design significantly reduces the floor area compared to the traditional process of combining multiple independent treatment units, making it suitable for application in areas with tight land resources. The air-lift internal circulation ensures sufficient mixing of sewage and sludge, enhancing the adaptability of the device to fluctuations in water quality and quantity. At the same time, the anaerobic granular sludge in the EGSB reaction tank 10 and the biological carrier in the Anammox reaction tank 20 provide a good growth environment for microorganisms, improving the stability and activity of microorganisms.

Claims

1. An air-lift internal circulation anaerobic-aerobic integrated sewage treatment device, comprising an EGSB reaction tank (10), an Anammox reaction tank (20) and an aerobic treatment tank (30), characterized in that: The EGSB reactor (10), Anammox reactor (20) and aerobic treatment tank (30) are arranged in an equilateral triangle. The EGSB reactor (10), Anammox reactor (20) and aerobic treatment tank (30) are detachably installed by an integrated support assembly (40). An inlet water system (50) is installed on one side of the EGSB reactor (10), and a gas-lift circulation system (60) is installed on the other side of the EGSB reactor (10). An outlet water system (70) is installed on one side of the aerobic treatment tank (30).

2. The integrated air-lift internal circulation anaerobic-aerobic sewage treatment device according to claim 1, characterized in that: A partition plate (101) with diversion holes is fixedly installed inside the EGSB reactor (10). The partition plate (101) divides the EGSB reactor (10) from bottom to top into a first anaerobic reaction chamber and a second anaerobic reaction chamber. A first gas-solid-liquid three-phase separator (102) is fixedly installed above the interior of the first anaerobic reaction chamber, and a second gas-solid-liquid three-phase separator (103) is fixedly installed above the interior of the second anaerobic reaction chamber. A biogas chamber is formed between the second gas-solid-liquid three-phase separator (103) and the EGSB reactor (10).

3. The integrated air-lift internal circulation anaerobic-aerobic sewage treatment device according to claim 2, characterized in that: The inlet water system (50) includes an inlet water pipeline (501). One end of the inlet water pipeline (501) is fixedly installed with a centralized box (502). The periphery of the centralized box (502) is fixedly connected with branch water distribution pipes (503). The top of the branch water distribution pipes (503) is fixedly connected with nozzles (504). The top of the other end of the inlet water pipeline (501) is fixedly installed with a return water pipe (505). The top of the return water pipe (505) is fixedly installed with a gas-liquid separator (506). One end of the gas-liquid separator (506) is connected to the EGSB reactor (10) through a biogas collection pipe (507). An electric control valve is fixedly installed in the middle section of the return water pipe (505).

4. A gas-lift internal circulation anaerobic-aerobic integrated sewage treatment device according to claim 3, characterized in that: The gas-lift circulation system (60) includes a gas-lift pipe (601). The bottom end of the gas-lift pipe (601) is inserted into the bottom side of the first anaerobic reaction chamber, and the top end of the gas-lift pipe (601) is inserted into the side of the biogas chamber. A circulation delivery pump (602) is fixedly installed in the middle section of the gas-lift pipe (601).

5. The integrated air-lift internal circulation anaerobic-aerobic sewage treatment device according to claim 4, characterized in that: The outlet water system (70) includes an outlet water pipeline and an outlet water valve (701). The outlet water valve (701) is interconnected with the aerobic treatment tank (30) through the outlet water pipeline.

6. The integrated air-lift internal circulation anaerobic-aerobic sewage treatment device according to claim 5, wherein: The bottom wall of the EGSB reaction tank (10) is fixedly installed with a groove seat (104). A servo reduction motor (105) is embedded inside the groove seat (104). The output end of the servo reduction motor (105) is fixedly installed with a scraping bar (106). A sharp cone is fixedly installed at the top of the scraping bar (106). A convex plate (107) extending to the groove seat (104) is fixedly installed at the bottom of the scraping bar (106). A sedimentation box (108) is fixedly installed at the bottom semi-circular hole of the groove seat (104). A sludge extraction pump (109) is fixedly installed at the bottom of the sedimentation box (108). Sealing rotating seats (110) are fixedly installed on the side walls on both sides of the sedimentation box (108). A steel wire rope (111) is movably installed between the two sealing rotating seats (110). One end of the steel wire rope (111) is fixedly installed with a motor reduction gear (112). Equally spaced circular plates (113) are fixedly installed on the outer wall of the steel wire rope (111). Disturbing soft strips (114) are fixedly installed around the circular plates (113).

7. The integrated air-lift internal circulation anaerobic-aerobic sewage treatment device according to claim 6, characterized in that: The integrated support assembly (40) includes a single-layer top seat (401) and a double-layer base (402). Fixed trays (403) are fixedly installed on the opposite surfaces of the single-layer top seat (401) and the double-layer base (402). A cross-shaped limiting rod (404) is fixedly installed at the bottom of the single-layer top seat (401). The cross-shaped limiting rod (404) is inserted into a limiting sleeve (405). The bottom of the limiting sleeve (405) is fixedly installed on the surface of the double-layer base (402).

8. A gas-lift internal circulation anaerobic-aerobic integrated sewage treatment device according to claim 7, characterized in that: Mounting seats (406) are fixedly installed on the sides of the opposite surfaces of the single-layer top seat (401) and the double-layer base (402). A screw rod (407) is rotatably installed inside the mounting seat (406). A nut sleeve (408) is threadedly connected to the outside of the screw rod (407). The nut sleeve (408) is embedded at both ends of a frame (409).

9. The integrated air-lift internal circulation anaerobic-aerobic sewage treatment device according to claim 8, characterized in that: Both ends of the EGSB reaction tank (10), the Anammox reaction tank (20), and the aerobic treatment tank (30) are embedded in the fixed trays (403). The groove seat (104) is embedded inside the double-layer base (402).

10. The integrated air-lift internal circulation anaerobic-aerobic sewage treatment device according to claim 8, wherein: The Anammox reaction tank (20) is interconnected with the second anaerobic reaction chamber through a pipeline. The aerobic treatment tank (30) is interconnected with the Anammox reaction tank (20) through a pipeline. An anaerobic granular sludge bed is provided at the bottom of the first anaerobic reaction chamber. A biological carrier suitable for the growth of anaerobic ammonium-oxidizing bacteria is arranged inside the Anammox reaction tank (20). Anaerobic ammonium-oxidizing bacteria are attached to the surface of the biological carrier. An aeration device and biological fillers are arranged inside the aerobic treatment tank (30).

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