An aeration system for high concentration sewage treatment

Abstract

The application discloses an aeration system for high-concentration sewage treatment, which comprises a nitrification tank, a magnetic suspension fan, a dissolved oxygen instrument and double-swirl aeration heads, an aeration main pipe is arranged at one side of the top of the nitrification tank, horizontal pipes are arranged outside the aeration main pipe, underwater vertical pipes are connected to the horizontal pipes, and the double-swirl aeration heads are connected to the bottom ends of the underwater vertical pipes; the output end of the magnetic suspension fan is connected with a fan main pipe, the fan main pipe is connected with the aeration main pipe, and a plurality of overhead devices are arranged between the top of a fan room and the fan main pipe. The magnetic suspension fan is used for conveying gas to the interiors of the double-swirl aeration heads which are uniformly hung in the nitrification tank, so that the double-swirl aeration heads can perform multi-point and uniform air blowing aeration on the percolate in the nitrification tank, thereby not only small aeration dead angle, but also improving oxygen supply stability, maintaining oxygen supply and improving system stability, and further easily meeting the demand of high-load dissolved oxygen in the wet season.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment, and in particular to an aeration system for treating high-concentration wastewater. Background Technology

[0002] Currently, due to the characteristics of landfill leachate water quality, such as high salinity, high organic matter concentration, complex composition, and high sludge concentration in the biological treatment line, the aeration system is required to have high stability. Therefore, the aeration method of the biological treatment line of the leachate system is mainly submersible jet aeration.

[0003] The existing aeration system at a wastewater treatment plant in Raoping also uses submersible jet aeration. Most of the aerators have been in use for 4-5 years and have undergone multiple repairs. The remaining repair value is low, and they have reached the end of their service life. There are currently not enough aerators available: there are 19 aerators on the high-concentration line of the wastewater treatment plant, but only 12 aerators are in normal working order (2 of which have low suction). Then, the guide rails of 4 aerators have fallen off and cannot be used. Finally, the last 3 aerators have no suction and cannot be repaired.

[0004] In this regard, the inventor believes that using submersible jet aeration is not only cumbersome to maintain, with a high failure rate and high equipment maintenance costs, but also requires cleaning the pool and stopping the production line when the equipment fails, affecting operational efficiency. At the same time, it is difficult to meet the high dissolved oxygen demand during the high water season. Utility Model Content

[0005] The purpose of this application is to provide an aeration system for high-concentration wastewater treatment, in order to solve the problems of the following: using submersible jet aeration, not only is maintenance cumbersome, failure rate high, and equipment maintenance cost high, but also the need to clean the pool and stop the production line when the equipment fails, affecting the efficiency of operation; at the same time, it is difficult to meet the high dissolved oxygen demand during the high water season.

[0006] The aeration system for treating high-concentration wastewater provided in this application adopts the following technical solution:

[0007] An aeration system for treating high-concentration wastewater includes a nitrification tank. An aeration main pipe is installed on one side of the top of the nitrification tank. Horizontal pipes are installed on the outside of the aeration main pipe through several air conveying components. Underwater vertical pipes are connected to the several horizontal pipes through several sealing connection devices. The bottom ends of the several underwater vertical pipes extend into the interior of the nitrification tank and are connected to double swirl aeration heads to aerate the leachate in the nitrification tank.

[0008] It also includes a magnetic levitation fan installed in the blower room. The output end of the magnetic levitation fan is connected to a main duct, which is connected to the aeration main pipe. Several overhead devices are also installed between the top of the blower room and the main duct.

[0009] It also includes a dissolved oxygen meter, which is used to measure the dissolved oxygen concentration of the leachate after aeration in the nitrification tank.

[0010] Furthermore, the sealing connection device includes an exhaust pipe end connected to the outside of the horizontal pipe, a flange one is provided on the exhaust pipe end, a flange two is provided at the top of the underwater vertical pipe, a plurality of locking connection components are provided between the flange one and the flange two, and a sealing component is also provided between the sides of the flange one and the flange two that abut against each other.

[0011] Furthermore, the sealing assembly includes a sealing protrusion ring disposed on the inner side of the second flange, and a sealing groove that mates with the sealing protrusion ring is provided on the inner side of the first flange, and a sealing strip that abuts against the sealing protrusion ring is also provided at the bottom of the sealing groove.

[0012] Furthermore, the gas supply assembly includes a gas supply pipe with one end connected to the outside of the aeration main pipe, and the other end of the gas supply pipe connected to the outside of one end of the horizontal pipe. A gas supply valve is also provided on the gas supply pipe.

[0013] Furthermore, the overhead device includes a fixed bar installed on the top of the blower room, on which two overhead inclined steel pipes are installed. The top ends of the two overhead inclined steel pipes are connected together, and the bottom ends of the two overhead inclined steel pipes are connected to the fixed bar through a fixing component. At the top ends of the two overhead inclined steel pipes, an overhead horizontal steel pipe is installed that abuts against the main air duct. A clamping component is also installed between the overhead horizontal steel pipe and the main air duct.

[0014] Furthermore, the clamp assembly includes an arc-shaped clamp sleeved on the outer side of the top of the main duct pipe. Both ends of the arc-shaped clamp are provided with clamp lugs, and the clamp lugs are provided with lug holes. Both ends of the overhead horizontal steel pipe are provided with overhead screws that mate with the lug holes. The two overhead screws are threaded with overhead nuts that abut against the clamp lugs.

[0015] Furthermore, a rubber layer is provided on the inner side of the arc-shaped clamp.

[0016] Furthermore, the fixing component includes fixing lugs symmetrically arranged on the bottom end of the overhead inclined steel pipe, a clamping cavity that cooperates with the fixing bar is formed between the two fixing lugs, and fixing bolts are respectively provided between the two fixing lugs and both sides of the fixing bar.

[0017] Furthermore, the distance between the bottom of the dual-swirl aeration head and the bottom of the nitrification tank is set to 300mm.

[0018] Furthermore, channel steel is provided on both sides of the top of the nitrification tank and on the outer sides of both ends of the horizontal pipe.

[0019] Compared with the prior art, the beneficial effects of this application are as follows:

[0020] By setting up a structure that links the nitrification tank, aeration main pipe, air supply components, horizontal pipes, sealing connection devices, underwater vertical pipes, dual-swirl aerators, magnetic levitation blowers, main air ducts, overhead devices, and dissolved oxygen meters, the magnetic levitation blowers deliver gas to several dual-swirl aerators that are evenly suspended in the nitrification tank. This allows the dual-swirl aerators to aerate the leachate in the nitrification tank at multiple points and evenly, thus not only reducing the aeration dead zone but also improving the stability of oxygen supply, maintaining oxygen supply, and enhancing system stability. As a result, it is easier to meet the high-load dissolved oxygen demand during the high-water season.

[0021] Meanwhile, the reduced foam production during aeration decreases the need for chemical dosing and energy consumption in the defoaming system of the nitrification tank. Furthermore, real-time display of dissolved oxygen data from multiple monitoring points allows the central control system to interlock with the magnetic levitation blower, enabling the blower to automatically adjust its airflow to achieve stable dissolved oxygen levels within the nitrification tank. This precise aeration significantly reduces manual operation and energy consumption, and improves system stability.

[0022] Furthermore, this technology stabilizes the effluent data of the entire wastewater treatment system, reinforcing environmental protection standards, and reduces manual adjustments during operation, thus improving operational quality. The number of devices required after the upgrade is significantly reduced, greatly lowering maintenance difficulty and workload. Additionally, the use of this dual-vortex aeration head generally avoids clogging, eliminating the need for maintenance; only the magnetic levitation blower requires repair. This simplifies the maintenance of the entire aeration system, resulting in a low failure rate, low equipment maintenance costs, and energy savings.

[0023] Furthermore, by utilizing a sealed connection device to suspend the dual-swirl aerator heads, the production line can be shut down without cleaning the nitrification tank in case of a malfunction, thereby improving operational efficiency. Each dual-swirl aerator head can be disassembled individually without affecting the operation of other dual-swirl aerator heads in the same nitrification tank, thus facilitating operation and maintenance. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the aeration system for treating high-concentration wastewater according to an embodiment of this application.

[0025] Figure 2This is a schematic diagram of the gas delivery component in an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the structure of the horizontal pipe, the underwater vertical pipe, and the dual swirl aerator head in the embodiments of this application.

[0027] Figure 4 This is a schematic diagram of the sealing connection device according to an embodiment of this application.

[0028] Figure 5 This is a schematic diagram of the structure of the overhead device according to an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Nitrification tank; 2. Aeration main pipe; 3. Horizontal pipe; 31. Exhaust pipe end; 32. Flange one; 33. Sealing groove; 34. Sealing strip; 4. Underwater riser; 41. Flange two; 42. Sealing convex ring; 5. Double swirl aerator head; 6. Magnetic levitation blower; 7. Main duct; 8. Air supply pipe; 81. Air supply valve; 9. Locking bolt; 91. Locking nut; 92. Fixing hole; 10. Blower room; 101. Local control cabinet; 102. Fixing bar; 11. Overhead inclined steel pipe; 111. Fixing lug; 12. Overhead horizontal steel pipe; 121. Overhead screw; 122. Overhead nut; 13. Arc clamp; 131. Clamp lug; 132. Rubber layer; 14. Fixing bolt; 15. Nitrification tank A; 16. Nitrification tank B; 17. Channel steel. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] This application discloses an aeration system for treating high-concentration wastewater, referring to... Figures 1-3 In this embodiment, the aeration system includes a nitrification tank 1, an aeration main pipe 2, an air conveying assembly, a horizontal pipe 3, a sealing connection device, an underwater vertical pipe 4, a double swirl aeration head 5, a magnetic levitation fan 6, a main air duct 7, and an overhead device. There are two nitrification tanks 1, namely nitrification tank A15 and nitrification tank B16; there are two aeration main pipes 2, which are respectively installed on one side of the top of nitrification tank A15 and nitrification tank B16, and both aeration main pipes 2 are made of carbon steel and corrosion-resistant materials with a specification of DN350.

[0033] Meanwhile, several horizontal pipes 3 are provided, which are evenly divided into two groups. The two groups of horizontal pipes 3 are connected to the outside of the two aeration main pipes 2 through several air conveying components. The two groups of horizontal pipes 3 are located horizontally on the top of nitrification tank A15 and nitrification tank B16, respectively. These horizontal pipes 3 are made of carbon steel and corrosion-resistant materials and have a specification of DN100. Preferably, channel steel 17 is installed on both sides of the top of nitrification tank A15 and nitrification tank B16. The ends of these channel steel 17 away from nitrification tank 1 are fixedly installed to the outside of the horizontal pipes 3. The installation of these channel steel 17 effectively supports the horizontal pipes 3.

[0034] Specifically, refer to Figure 1 and Figure 2 In this embodiment, the gas delivery assembly includes a gas delivery pipe 8 and a gas delivery valve 81. One end of the gas delivery pipe 8 is fixedly connected to the outside of the aeration main pipe 2, and the other end is fixedly connected to the outside of one end of the horizontal pipe 3. The gas delivery valve 81 is installed on the end of the gas delivery pipe 8 near the aeration main pipe 2 to effectively open and close the gas delivery pipe 8, allowing gas to flow from the aeration main pipe 2 into the gas delivery pipe 8, and then the gas flows along the gas delivery pipe 8 into the horizontal pipe 3. Specifically, the gas delivery valve 81 is existing equipment and will not be described in detail here.

[0035] In addition, several underwater vertical pipes 4 are provided. These underwater vertical pipes 4 are respectively installed on the outside of the horizontal pipes 3 through several sealing connection devices, so that the underwater vertical pipes 4 and the horizontal pipes 3 are interconnected. Specifically, in this embodiment, five underwater vertical pipes 4 are installed on the outside of each horizontal pipe 3, and the bottom ends of these underwater vertical pipes 4 pass through the fiberglass cover plate at the top of the middle part of the nitrification tank 1 and the tank walls on both sides of the nitrification tank 1, so as to extend into the interior of the nitrification tank 1.

[0036] All underwater risers 4 are made of 304 stainless steel and are DN32 in size. This prevents pipe breakage caused by thrust vibration, ensuring long-term stable operation of the equipment. Before installing these underwater risers 4, holes need to be drilled in the fiberglass cover plate at the top center of the nitrification tank 1 and in the side walls of the nitrification tank 1. After the underwater risers 4 are installed, these holes need to be repaired.

[0037] More specifically, refer to Figure 3 and Figure 4In this embodiment, the sealing connection device includes an exhaust pipe end 31, a first flange 32, a second flange 41, a locking connection assembly, and a sealing assembly. One end of the exhaust pipe end 31 is fixedly connected to the outside of the horizontal pipe 3, and a reinforcing angle steel is installed between the exhaust pipe end 31 and the horizontal pipe 3 to improve the connection stability between the exhaust pipe end and the horizontal pipe 3. The first flange 32 is installed on the outside of the end of the exhaust pipe end 31 furthest from the horizontal pipe 3. The second flange 41 is installed on the outside of the top of the underwater vertical pipe 4. The first flange 32 and the second flange 41 are fitted together and then fixedly connected together by the locking connection assembly.

[0038] Specifically, the locking connection assembly includes locking bolts 9 and locking nuts 91, with multiple locking bolts 9 and locking nuts 91 installed, and the locking bolts 9 and locking nuts 91 are threaded together. Several fixing holes 92 are provided on both flange 32 and flange 41. When flange 32 and flange 41 are fitted together, these fixing holes 92 are interconnected. Then, by simultaneously inserting the locking bolts 9 through the corresponding fixing holes 92 into flange 32 and flange 41, and finally tightening the locking nuts 91 onto the bolts, flange 32 and flange 41 are fixedly connected, thereby enabling the exhaust pipe end 31 to communicate with the horizontal pipe 3.

[0039] In this embodiment, the sealing assembly is positioned between the mating sides of flange 32 and flange 41 to improve the sealing performance between them and prevent gas leakage. Specifically, the sealing assembly includes a sealing ring 42 and a sealing strip 34. The sealing ring 42 is installed on the inner side of flange 41, and a sealing groove 33 is formed on the inner side of flange 32. The sealing groove 33 cooperates with the sealing ring 42. When flange 32 and flange 41 are fitted together, the sealing ring 42 is inserted into the sealing groove 33, thereby effectively positioning and guiding the installation of flange 32 and flange 41.

[0040] Furthermore, the sealing strip 34 is installed at the bottom of the sealing groove 33 and is made of rubber. When the sealing ring 42 is inserted into the sealing groove 33, the sealing ring 42 and the sealing strip 34 are pressed together by the locking action of the locking bolt 9 and the locking nut 91, making the installation between flange 1 32 and flange 2 41 more tight, thereby preventing gas leakage between flange 1 32 and flange 2 41.

[0041] In addition, refer to Figure 2 and Figure 3 In this embodiment, a plurality of dual swirl aerators 5 are provided, the number of which is the same as the number of underwater vertical pipes 4, and the dual swirl aerators 5 are respectively installed at the bottom end of the underwater vertical pipes 4 so as to be evenly arranged inside the nitrification tank 1.

[0042] To elaborate, the dual-vortex aerator head 5 is an existing device. Specifically, the dual-vortex aerator head 5 includes a cylinder, a multi-layer cutter, an air inlet pipe, and accessories. During operation, gas enters from the bottom. Due to the air lifting effect, the mud, water, and gas mixture circulates inside and outside the cylinder. As the mixture rises, it is cut multiple times by the multi-layer cutter inside the cylinder, thus achieving multiple cutting of the gas, liquid, and solid components. This results in the lifting and stirring of the gas-liquid-solid mixture, continuous circulation and convection, enhanced oxygen transfer rate and utilization, and features non-clogging and the ability to be installed with water while production is interrupted.

[0043] Furthermore, the dual-swirl aerator head 5 is a dual-nozzle swirl aerator, suitable for environments with high salinity, high chloride ion and high sludge concentration in landfill leachate. It features resistance to corrosion, long service life, low maintenance cost and energy saving. The aerator is made of ultra-high molecular weight polyethylene and polytetrafluoroethylene, and the accessories are made of 316L stainless steel.

[0044] Preferably, the distance between the bottom of the double swirl aerator head 5 and the bottom of the nitrification tank 1 is set to 300mm; with this setting, the double swirl aerator head 5 can effectively aerate and stir the sludge and leachate at the bottom of the nitrification tank 1 without leaving any dead corners.

[0045] Meanwhile, the suspension height of the dual-swirl aerator head 5 can be adjusted slightly based on actual on-site measurements; and the overall working efficiency of the dual-swirl aerator head 5 decreases as the suspension distance increases. Furthermore, by utilizing a sealed connection device to suspend the dual-swirl aerator head 5, the production line can be stopped and cleaned in the nitrification tank 1 in case of a malfunction, thus improving operational efficiency. The sealed connection device also allows each dual-swirl aerator head 5 to be disassembled individually without affecting the operation of other dual-swirl aerator heads 5 within the same nitrification tank 1, facilitating operation and maintenance.

[0046] Secondly, refer to Figure 1 and Figure 2 In this embodiment, the magnetic levitation fan 6 is installed inside the blower room 10; one end of the duct main pipe 7 is connected to the output end of the magnetic levitation fan 6, and the other end of the duct main pipe 7 extends out of the top of the blower room 10 and is connected to two aeration main pipes 2.

[0047] To elaborate, the magnetic levitation fan 6 is existing equipment. Specifically, the magnetic levitation fan 6 includes a permanent magnet high-speed synchronous motor, impeller, fan control system, volute, flow and pressure regulating devices, air filter, and vent valve, etc., to provide greater air pressure and air volume. Furthermore, the magnetic levitation fan 6 is a magnetic levitation centrifugal blower, and the main duct 7 is a DN500 pipe made of carbon steel and corrosion-resistant materials.

[0048] When the magnetic levitation fan 6 is started, it supplies gas to the inside of the main air duct 7. Then the gas is discharged from the main air duct 7 into the two aeration main pipes 2. The two aeration main pipes 2 discharge the gas into the horizontal pipes 3 respectively. Finally, it is transported to the double swirl aeration head 5 through the underwater vertical pipe 4 to achieve effective aeration and stirring of the sludge and leachate at the bottom of the nitrification tank 1.

[0049] Meanwhile, a local control cabinet 101 is also installed inside the blower room 10. The local control cabinet 101 is connected to the magnetic levitation centrifugal blower. The local control cabinet 101 should include start, stop, and operation control as well as fault detection, and should be able to automatically stop the blower in the event of a fault. The local control cabinet 101 should also have all the functions to ensure the normal operation of the blower. The control system should be centrally installed in the local control cabinet 101.

[0050] Preferably, the local control cabinet 101 is a digital multi-channel input / output protection panel, employing a programmable logic controller (PLC) and a touch screen display; wherein the programmable logic controller (PLC) is required to be Siemens 1200 series, etc.

[0051] In addition, in this embodiment, the aeration system also includes a dissolved oxygen meter. By using the dissolved oxygen meter to measure the dissolved oxygen concentration of the leachate after aeration in the nitrification tank 1, the stability of the oxygen supply can be improved, the oxygen supply can be maintained, and the system stability can be enhanced, thereby easily meeting the high-load dissolved oxygen demand during the high-water season. Specifically, the local control cabinet 101 and the dissolved oxygen meter are existing equipment and will not be described in detail here.

[0052] Secondly, in this embodiment, several overhead devices are provided, which are respectively located between the top of the blower room 10 and the outside of the main duct 7, so as to achieve the effect of effectively supporting the main duct 7.

[0053] Specifically, refer to Figure 1 and Figure 5In this embodiment, the overhead device includes a fixed bar 102, an overhead inclined steel pipe 11, a fixing assembly, an overhead horizontal steel pipe 12, and a clamp assembly. The fixed bar 102 is installed at the top of the blower room 10; two overhead inclined steel pipes 11 are provided, their top ends connected to each other, and their bottom ends are both designed to slope downwards and are both installed on the fixed bar 102 via the fixing assembly; the middle part of the overhead horizontal steel pipe 12 is fixedly connected to the top ends of the two overhead inclined steel pipes 11, and the overhead horizontal steel pipe 12 is designed horizontally and abuts against the bottom side of the main duct 7; the clamp assembly is located between the overhead horizontal steel pipe 12 and the main duct 7 to facilitate the clamping and installation of the overhead horizontal steel pipe 12 and the main duct 7.

[0054] The structure of the clamp assembly and the fixing assembly is described in detail below:

[0055] Specifically, refer to Figure 1 and Figure 5 In this embodiment, the clamp assembly includes an arc-shaped clamp 13, clamp lugs 131, overhead screws 121, and overhead nuts 122. The arc-shaped clamp 13 is fitted onto the top outer side of the main duct 7. Two clamp lugs 131 are provided, symmetrically installed on both sides of the arc-shaped clamp 13. Two overhead screws 121 are provided, symmetrically installed on the top of both ends of the overhead horizontal steel pipe 12, and each clamp lug 131 has a lug hole. The two overhead screws 121 respectively cooperate with the two lug holes, allowing the overhead screws 121 to pass through the clamp lugs 131 along the lug holes. Two overhead nuts 122 are provided, each threadedly connected to one of the two overhead screws 121.

[0056] When it is necessary to fix the duct main pipe 7 to the overhead horizontal steel pipe 12, the arc-shaped clamp 13 is sleeved on the top outer side of the duct main pipe 7, so that the two overhead screws 121 pass through the two clamp ear positions 131 along the ear position holes respectively. Then, the two overhead nuts 122 are screwed into the overhead screws 121 respectively, so that the overhead nuts 122 are pressed against the clamp ear positions 131, thereby realizing the stable installation of the duct main pipe 7 on the overhead horizontal steel pipe 12.

[0057] Preferably, a rubber layer 132 is also installed on the inner side of the arc-shaped clamp 13; when the arc-shaped clamp 13 is fixedly sleeved on the top outer side of the duct mother pipe 7, the rubber layer 132 can prevent the arc-shaped clamp 13 and the duct mother pipe 7 from scratching each other, thus effectively protecting the duct mother pipe 7.

[0058] Specifically, refer to Figure 1 and Figure 5In this embodiment, the fixing assembly includes fixing lugs 111 and fixing bolts 14. Two fixing lugs 111 are provided, symmetrically installed on the bottom end of the overhead inclined steel pipe 11. A clamping cavity is formed between the two fixing lugs 111 to cooperate with the fixing rod 102, allowing the overhead inclined steel pipe 11 to be engaged with the fixing rod 102 through the clamping cavity, thereby clamping and limiting the fixing rod 102 by the two fixing lugs 111.

[0059] Meanwhile, two fixing bolts 14 are provided, and the two fixing bolts 14 are respectively installed between the two fixing lugs 111 and the two sides of the fixing bar 102. More specifically, each of the two fixing lugs 111 has a round hole that cooperates with the fixing bolt 14, and the two sides of the fixing bar 102 have threaded holes that are threaded to the fixing bolts 14. In this way, by using the fixing bolt 14 to pass through the round hole and screw it into the threaded hole, the two fixing lugs 111 can be firmly installed on the two sides of the fixing bar 102, thereby realizing the stable installation of the bottom end of the overhead inclined steel pipe 11.

[0060] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An aeration system for treating high-concentration wastewater, characterized in that: The system includes a nitrification tank (1), an aeration main pipe (2) is provided on one side of the top of the nitrification tank (1), and horizontal pipes (3) are provided on the outside of the aeration main pipe (2) through several air conveying components. Several underwater vertical pipes (4) are connected to the several horizontal pipes (3) through several sealing connection devices. The bottom ends of the several underwater vertical pipes (4) extend into the interior of the nitrification tank (1) and are connected to double swirl aeration heads (5) to aerate the leachate in the nitrification tank (1). It also includes a magnetic levitation fan (6) installed in the blower room (10), the output end of the magnetic levitation fan (6) is connected to the air duct main pipe (7), the air duct main pipe (7) is connected to the aeration main pipe (2), and several overhead devices are also installed between the top of the blower room (10) and the air duct main pipe (7). It also includes a dissolved oxygen meter, which is used to measure the dissolved oxygen concentration of the leachate after aeration in the nitrification tank (1).

2. The aeration system for treating high-concentration wastewater according to claim 1, characterized in that: The sealing connection device includes an exhaust pipe end (31) connected to the outside of the horizontal pipe (3), a flange one (32) is provided on the exhaust pipe end (31), a flange two (41) is provided at the top of the underwater vertical pipe (4), a plurality of locking connection components are provided between the flange one (32) and the flange two (41), and a sealing component is also provided between the sides of the flange one (32) and the flange two (41) that abut against each other.

3. An aeration system for treating high-concentration wastewater according to claim 2, characterized in that: The sealing assembly includes a sealing ring (42) disposed inside the second flange (41), and a sealing groove (33) that cooperates with the sealing ring (42) is provided on the inner side of the first flange (32). The bottom of the sealing groove (33) is also provided with a sealing strip (34) that abuts against the sealing ring (42).

4. An aeration system for treating high-concentration wastewater according to claim 1, characterized in that: The gas delivery assembly includes a gas delivery pipe (8) with one end connected to the outside of the aeration main pipe (2), and the other end of the gas delivery pipe (8) connected to the outside of one end of the horizontal pipe (3). The gas delivery pipe (8) is also provided with a gas delivery valve (81).

5. An aeration system for treating high-concentration wastewater according to claim 1, characterized in that: The overhead device includes a fixed bar (102) installed on the top of the blower room (10). Two overhead inclined steel pipes (11) are installed on the fixed bar (102). The top ends of the two overhead inclined steel pipes (11) are connected together. The bottom ends of the two overhead inclined steel pipes (11) are connected to the fixed bar (102) through a fixing component. At the top ends of the two overhead inclined steel pipes (11), an overhead horizontal steel pipe (12) is installed that abuts against the main air duct (7). A clamp component is also installed between the overhead horizontal steel pipe (12) and the main air duct (7).

6. An aeration system for treating high-concentration wastewater according to claim 5, characterized in that: The clamp assembly includes an arc-shaped clamp (13) sleeved on the outer side of the top of the main duct (7). Both ends of the arc-shaped clamp (13) are provided with clamp lugs (131). The clamp lugs (131) are provided with lug holes. Both ends of the overhead horizontal steel pipe (12) are provided with overhead screws (121) that cooperate with the lug holes. The two overhead screws (121) are threaded with overhead nuts (122) that abut against the clamp lugs (131).

7. An aeration system for treating high-concentration wastewater according to claim 6, characterized in that: The inner side of the arc-shaped clamp (13) is provided with a rubber layer (132).

8. An aeration system for treating high-concentration wastewater according to claim 5, characterized in that: The fixing assembly includes fixing lugs (111) symmetrically arranged on the bottom end of the overhead inclined steel pipe (11), and a clamping cavity is formed between the two fixing lugs (111) to cooperate with the fixing bar (102). Fixing bolts (14) are provided between the two fixing lugs (111) and the two sides of the fixing bar (102).

9. An aeration system for treating high-concentration wastewater according to claim 1, characterized in that: The distance between the bottom of the dual swirl aerator (5) and the bottom of the nitrification tank (1) is set to 300 mm.

10. An aeration system for treating high-concentration wastewater according to claim 1, characterized in that: Channel steel (17) is provided on both sides of the top of the nitrification tank (1) and on the outer sides of both ends of the horizontal pipe (3).

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