A biological sewage treatment system and a method of sewage treatment

Abstract

This invention belongs to the field of wastewater treatment technology, specifically a biological wastewater treatment system and method. Addressing the problem that existing biological wastewater treatment devices cannot adjust the aeration effect in real time based on the volume or pollution level of wastewater in the aeration tank, the following solution is proposed: an aeration tank; two vertical rods, symmetrically arranged, fixedly connected by a common connecting rod, and a common regulating cylinder located below the connecting rod within the aeration tank. This invention discloses a biological wastewater treatment system and method that allows the device to control the intensity of agitation of the activated sludge at the bottom of the aeration tank based on the volume or pollution level of wastewater, thereby enabling adaptive control of wastewater aeration and ensuring efficient treatment while minimizing energy consumption.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a biological wastewater treatment system and wastewater treatment method. Background Technology

[0002] Biological wastewater treatment is a technology that uses microorganisms such as bacteria, fungi, or protozoa to decompose and remove pollutants from wastewater. It is the core component of modern wastewater treatment plants and is particularly good at removing biodegradable organic pollutants, nutrients such as nitrogen and phosphorus. The activated sludge process is the most classic biological wastewater treatment process, in which wastewater is mixed with activated sludge rich in microorganisms in an aeration tank and aerated, and the microorganisms degrade organic matter.

[0003] Existing biological wastewater treatment devices typically operate according to fixed programs and cannot be adjusted in real time according to the amount of wastewater in the aeration tank or the degree of pollution. This results in the device requiring a longer aeration time when the wastewater volume is large or the pollutant concentration is high, leading to low efficiency. Conversely, when the wastewater volume is small or the pollution level is low, energy consumption increases. Summary of the Invention

[0004] This invention discloses a biological wastewater treatment system and a wastewater treatment method, aiming to solve the technical problem in the prior art that existing biological wastewater treatment devices cannot adjust the aeration effect in real time according to the amount of wastewater in the aeration tank or the degree of pollution of the wastewater.

[0005] The present invention proposes a biological wastewater treatment system, comprising: Aeration tank; Two vertical rods are symmetrical to each other and are fixedly connected by the same connecting rod. A common adjusting cylinder is provided between the two vertical rods, and the adjusting cylinder is located below the connecting rod and inside the aeration tank.

[0006] A controllable winch module is located on the regulating cylinder. The controllable winch module is used to control the intensity of winch agitation of the activated sludge at the bottom of the aeration tank according to the amount of sewage in the aeration tank or the degree of sewage pollution.

[0007] In a preferred embodiment, the controllable winch module includes two symmetrical rotating shafts, both fixedly connected to the side opposite to the adjusting cylinder. The shafts are both located on a vertical rod on the same side. An external gear ring is fixedly connected to the outside of one shaft, and a second motor is fixedly connected to the outside of the vertical rod on the same side as the external gear ring. The output end of the second motor is connected to a first gear via a coupling, and the first gear meshes with the external gear ring. The other shaft has a circular hole, and an exhaust pipe is fixedly connected to the inner wall of the hole. The exhaust pipe is located inside the adjusting cylinder and has multiple equidistantly distributed exhaust holes. A rotating joint is movably connected to the end of the exhaust pipe away from the adjusting cylinder, and an air guide pipe is fixedly connected to the end of the rotating joint away from the exhaust pipe. An air pump is fixedly connected to the upper side of the connecting rod. The output end of the air pump is connected to the end of the air guide pipe away from the regulating cylinder via a thin tube. Two symmetrical horizontal frames are fixedly connected to the upper side of the aeration tank. A round rod and a lead screw are movably connected to the inner walls of the two horizontal frames, respectively. Slider blocks are provided on the outside of both the round rod and the lead screw. A motor is fixedly connected to the outside of the horizontal frame on the same side as the lead screw. The output end of the motor is connected to one side of the lead screw via a coupling. The opposite sides of the two sliders are movably connected to the outside of a vertical rod on the same side. A fixed plate is fixedly connected to the upper side of each slider. A synchronous motor is fixedly connected to the outside of each fixed plate. The output ends of the two synchronous motors are connected to directional rods via couplings. Each directional rod has a slot, and a protruding rafter is slidably connected to the inner wall of the slot. The protruding rafter is connected to the outer wall of the vertical rod on the same side. The two sides of the adjustable cylinder are fixedly connected; the outer side of the adjustable cylinder has three circumferentially equidistantly distributed receiving slots, the inner wall of each receiving slot is movably connected to a round shaft, the outer side of each round shaft is movably connected to a winch plate, and the outer side of each round shaft is surrounded by two symmetrical torsion springs. One end of each torsion spring is fixedly connected to the outer side of the winch plate, and the other end is fixedly connected to the inner wall of the receiving slot. The outer side of each winch plate is fixedly connected to a transmission plate. The inner wall of the adjustable cylinder is movably connected to three circumferentially equidistantly distributed hydraulic rods, the output end of each hydraulic rod is movably connected to the outer side of the transmission plate on the same side. The outer side of the exhaust pipe is provided with a diffuser cylinder, the outer side of which has multiple equidistantly distributed round holes. The diffuser cylinder is fixedly connected to the inner wall of the adjustable cylinder on the opposite side. The device is externally fixed with multiple circumferentially distributed striking plates; each of the three winch plates has a sliding groove, and a closing plate is slidably connected inside the groove. Multiple equidistant springs are fixedly connected to the outside of each closing plate, and the other end of each spring is fixedly connected to the inner wall of the groove. Two symmetrical bosses are fixedly connected to the inner wall of each groove, and a winding roller is movably connected to each boss. A wire rope is fixedly connected to each winding roller, and the end of the wire rope away from the winding roller is fixedly connected to the outside of the closing plate on the same side. Two symmetrical motors are fixedly connected to the inner wall of each groove, and the output end of each motor is connected to one side of the winding roller via a coupling. Multiple equally distributed drag-reducing grooves are provided on each winch plate, and quick-release modules are installed on both vertical rods.

[0008] In a preferred embodiment, both quick-release modules include a sliding groove, which is formed on a vertical rod. The outer side of the rotating shaft is slidably connected to the inner bottom wall of the sliding groove. A locking plate is slidably connected inside each sliding groove, and the bottom of each locking plate is slidably connected to the bottom of the rotating shaft. Two symmetrical guide rods are fixedly connected to the upper side of each locking plate. The two guide rods are slidably connected to the same mounting plate. The mounting plate is fixedly connected to the side opposite to the vertical rod. A return spring is provided on the outer side of each guide rod. A boss is fixedly connected to the outer side of each of the two vertical rods. A short shaft is movably connected to each boss. A lock plate is provided on the outer side of each short shaft. There are buckles, and torsion springs are fixedly connected to the outside of the short shaft. The end of the torsion spring away from the short shaft is fixedly connected to the inner wall of the buckle. Locking teeth are fixedly connected to the outside of the two locking plates, and the outside of the locking teeth engages with the outside of the buckle. The two vertical rods are fixedly connected to the outside of the protrusion plate, and the two sliders are fixedly connected to the outside of the positioning plate. The positioning plate and the protrusion plate are attached to each other on the opposite side. The positioning plate and the protrusion plate are both provided with holes. The same pin is inserted into the hole. The pin is provided with a tension spring. One end of the tension spring is fixedly connected to the outside of the positioning plate, and the other end is fixedly connected to the outside of the tension spring.

[0009] A biological wastewater treatment method, using a biological wastewater treatment system as described in claim 1, includes the following steps: Step 1: After injecting the wastewater to be treated into the aeration tank, the volume and pollution level of the wastewater in the aeration tank are judged. The controllable winch module is used to continuously inject air into the wastewater through the regulating cylinder. At the same time, the winch plate on the regulating cylinder is used to winch and stir the activated sludge settled at the bottom of the aeration tank. Step 2: When the device, especially the regulating cylinder, needs to be repaired or replaced after a long period of use, use the quick-release module to remove the regulating cylinder from the vertical rod. After the repair or replacement is completed, reinstall it.

[0010] As can be seen from the above, the biological wastewater treatment system provided by the present invention enables the device to control the intensity of hoisting and agitating the activated sludge at the bottom of the aeration tank according to the amount of wastewater in the aeration tank or the degree of pollution of the wastewater, thereby enabling the device to adaptively control the aeration treatment of wastewater and ensure that energy consumption is minimized while treating the wastewater efficiently. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of a biological wastewater treatment system proposed in this invention; Figure 2 This is a cross-sectional structural diagram of a biological wastewater treatment system proposed in this invention; Figure 3 This is a schematic diagram of the controllable winch module structure of a biological wastewater treatment system proposed in this invention; Figure 4 This is a schematic diagram of the slider structure of a biological wastewater treatment system proposed in this invention; Figure 5 This is a schematic diagram of the regulating cylinder structure of a biological wastewater treatment system proposed in this invention; Figure 6 This is a schematic diagram of the diffuser structure of a biological wastewater treatment system proposed in this invention; Figure 7 This is a schematic diagram of the winch plate structure of a biological wastewater treatment system proposed in this invention; Figure 8 This is a schematic diagram of a quick-release module structure for a biological wastewater treatment system proposed in this invention; Figure 9 This is a schematic diagram of the pin structure of a biological wastewater treatment system proposed in this invention.

[0012] In the diagram: 1. Aeration tank; 2. Vertical rod; 3. Connecting rod; 4. Adjusting cylinder; 5. Controllable winch module; 501. Rotating shaft; 502. Horizontal frame; 503. Round rod; 504. Lead screw; 505. Motor; 506. Sliding block; 507. Air pump; 508. Air guide pipe; 509. Synchronous motor; 510. Directional rod; 511. Convex rafter; 512. External gear ring; 513. Motor II; 514. Gear I; 515. Collection trough; 516. Winch plate; 517. Torsion spring I; 518. Transmission plate; 519. Hydraulic rod; 520. Rotary joint; 521. Exhaust pipe; 522. Diffuser; 523. Impact plate; 524. Sealing plate; 525. Spring 1; 526. Drag-reducing groove; 527. Winding roller; 528. Wire rope; 529. Motor 3; 6. Quick-release module; 601. Sliding groove; 602. Locking plate; 603. Guide rod; 604. Mounting plate; 605. Return spring; 606. Buckle; 607. Locking tooth; 608. Torsion spring 2; 609. Protruding plate; 610. Positioning plate; 611. Pin; 612. Tension spring. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0014] The biological wastewater treatment system disclosed in this invention is mainly applied to scenarios where existing biological wastewater treatment devices cannot adjust the aeration effect in real time according to the amount of wastewater in the aeration tank or the degree of pollution of the wastewater.

[0015] Reference Figures 1-9 A biological wastewater treatment system, comprising: Aeration tank 1; There are two vertical rods 2, which are symmetrical to each other. The two vertical rods 2 are connected by the same connecting rod 3 by bolts, and the same adjusting cylinder 4 is set between the two vertical rods 2. The adjusting cylinder 4 is located below the connecting rod 3 and is located inside the aeration tank 1.

[0016] The controllable winch module 5 is located on the regulating cylinder 4. The controllable winch module 5 is used to control the intensity of the winch and agitation of the activated sludge at the bottom of the aeration tank 1 according to the amount of sewage in the aeration tank 1 or the degree of sewage pollution.

[0017] Specifically, the device utilizes a controllable hoisting module 5 to control the intensity of hoisting and agitating the activated sludge at the bottom of the aeration tank 1 based on the amount of wastewater or the degree of pollution in the aeration tank 1. This allows the device to adaptively control the aeration treatment of wastewater, ensuring efficient treatment while minimizing energy consumption.

[0018] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7In a preferred embodiment, the controllable winch module 5 includes two symmetrical rotating shafts 501. Both shafts 501 are bolted to the side opposite to the adjusting cylinder 4. The shafts 501 are located on the same side of the vertical rod 2. One shaft 501 has an external gear ring 512 bolted to its exterior. A second motor 513 is bolted to the exterior of the vertical rod 2 on the same side as the external gear ring 512. The output end of the second motor 513 is connected to a first gear 514 via a coupling. The first gear 514 meshes with the external gear ring 512. The other shaft 501 has a circular hole, and an exhaust pipe 521 is bolted to the inner wall of the hole. The exhaust pipe 521 is located inside the adjusting cylinder 4 and has multiple equidistantly distributed exhaust holes. A rotary joint 520 is rotatably connected to the end away from the regulating cylinder 4 via a bearing. An air guide pipe 508 is bolted to the end of the rotary joint 520 away from the exhaust pipe 521. An air pump 507 is bolted to the upper side of the connecting rod 3. The output end of the air pump 507 is connected to the end of the air guide pipe 508 away from the regulating cylinder 4 via a thin tube. Two symmetrical transverse frames 502 are bolted to the upper side of the aeration tank 1. A round rod 503 and a lead screw 504 are rotatably connected to the inner walls of the two transverse frames 502 via bearings, respectively. Slider blocks 506 are provided on the outside of both the round rod 503 and the lead screw 504. A motor 505 is bolted to the outside of the transverse frame 502 on the same side as the lead screw 504. The output end of the motor 505 is connected to one side of the lead screw 504 via a coupling. Connections: The opposite sides of the two sliders 506 are rotatably connected to the outside of the vertical rod 2 on the same side via bearings. A fixing plate is bolted to the upper side of each slider 506. A synchronous motor 509 is bolted to the outside of each fixing plate. The output ends of the two synchronous motors 509 are connected to a deflector rod 510 via a coupling. Each deflector rod 510 has a slot, and a protruding rafter 511 is slidably connected to the inner wall of each slot. The protruding rafter 511 is bolted to the opposite side of the outside of the vertical rod 2 on the same side. The adjusting cylinder 4 has three circumferentially spaced receiving slots 515 on its outer side. A round shaft is rotatably connected to the inner wall of each receiving slot 515 via bearings. A winch plate 516 is rotatably connected to the outside of each round shaft via bearings. Two... A symmetrical torsion spring 517, one end of which is bolted to the outside of the winch plate 516, and the other end of which is bolted to the inner wall of the receiving groove 515. A transmission plate 518 is bolted to the outside of the winch plate 516. Three circumferentially distributed hydraulic rods 519 are rotatably connected to the inner wall of the adjusting cylinder 4 via bearings. The output ends of the hydraulic rods 519 are rotatably connected to the outside of the transmission plate 518 on the same side via bearings. A diffuser 522 is provided on the outside of the exhaust pipe 521. Multiple circumferentially distributed circular holes are opened on the outside of the diffuser 522. The side of the diffuser 522 opposite to the inner wall of the adjusting cylinder 4 is bolted. Multiple circumferentially distributed striking plates 523 are bolted to the outside of the diffuser 522.Each of the three winch plates 516 has a sliding groove, and a closing plate 524 is slidably connected within each groove. Multiple equidistant springs 525 are bolted to the outside of each closing plate 524. The other end of each spring 525 is bolted to the inner wall of the groove. Two symmetrical bosses are bolted to the inner wall of each groove, and a winding roller 527 is rotatably connected to each boss via bearings. A wire rope 528 is bolted to each winding roller 527, and the end of the wire rope 528 away from the winding roller 527 is bolted to the outside of the closing plate 524 on the same side. Two symmetrical motors 529 are bolted to the inner wall of each groove, and the output end of each motor 529 is connected to one side of the winding roller 527 via a coupling. Multiple equally spaced drag-reducing grooves 526 are provided on each winch plate 516, and quick-release modules 6 are provided on each of the two vertical rods 2.

[0019] In specific application scenarios, the controllable hoist module 5 is mainly suitable for the controllable hoisting link in the controllable hoisting process. That is, the controllable hoist module 5 uses the exhaust pipe 521, diffuser 522 and tapping plate 523 to refine the air injected into the sewage into tiny bubbles, thereby increasing the contact surface between oxygen and activated sludge, improving the activity of the sludge and increasing the aeration treatment effect. The regulating cylinder 4 and hoisting plate 516 can hoist the activated sludge settled at the bottom of the aeration tank 1, so that the microorganisms in the sludge can be fully diffused into the sewage, improving the aeration treatment efficiency. The sealing plate 524 and drag reduction groove 526 can control the degree of hoisting of sewage and activated sludge by the hoisting plate 516, so that the device can control the hoisting effect of the hoisting plate 516 according to the sewage volume or the degree of sewage pollution, achieving high treatment effect and low energy consumption.

[0020] Reference Figure 8 and Figure 9In a preferred embodiment, both quick-release modules 6 include a sliding groove 601, which is formed on the vertical rod 2. The outer side of the rotating shaft 501 is slidably connected to the bottom inner wall of the sliding groove 601. A locking plate 602 is slidably connected inside the sliding groove 601. The bottom of the locking plate 602 is slidably connected to the bottom of the rotating shaft 501. Two symmetrical guide rods 603 are bolted to the upper side of the locking plate 602. The same mounting plate 604 is slidably connected to the outer side of the two guide rods 603. The side of the mounting plate 604 opposite to the vertical rod 2 is bolted. A return spring 605 is provided on the outer side of each guide rod 603. A boss is bolted to the outer side of each of the two vertical rods 2. A short shaft is rotatably connected to the boss via a bearing. A buckle 606 is provided on the outer side of each short shaft. The shaft is bolted to the outside of each torsion spring 608. The end of the torsion spring 608 away from the short shaft is bolted to the inner wall of the buckle 606. The two locking plates 602 are bolted to the outside of each locking tooth 607. The outside of the locking tooth 607 engages with the outside of the buckle 606. The two vertical rods 2 are bolted to the outside of each protrusion plate 609. The two sliders 506 are bolted to the outside of each positioning plate 610. The positioning plate 610 and the protrusion plate 609 are attached to the opposite side. Both the positioning plate 610 and the protrusion plate 609 have openings. The same pin 611 is inserted into the opening. The pin 611 is bolted to the outside of each tension spring 612. One end of the tension spring 612 is bolted to the outside of the positioning plate 610, and the other end is bolted to the outside of the tension spring 612.

[0021] In specific application scenarios, the quick-release module 6 is mainly used for the quick-release stage in the quick-release process. That is, the quick-release module 6 can realize the quick disassembly and assembly of the regulating cylinder 4 by using the sliding groove 601 and the locking plate 602, which significantly reduces the time spent on disassembly and maintenance of the device and reduces the workload of workers. The buckle 606 and the locking tooth 607 can ensure the limiting effect of the locking plate 602 on the rotating shaft 501, thereby ensuring the effective meshing of the outer gear ring 512 and the gear 514. The pin 611, the positioning plate 610 and the convex plate 609 can restrict the position of the regulating cylinder 4 in the aeration tank 1, ensuring that the bubbles in the regulating cylinder 4 can always emerge from the bottom of the aeration tank 1, thus ensuring the aeration effect.

[0022] A biological wastewater treatment method, using a biological wastewater treatment system as described above, includes the following steps: Step 1: After injecting the wastewater to be treated into aeration tank 1, based on the amount of wastewater and its pollution level, the controllable winch module 5 is used to continuously inject air into the wastewater through the regulating cylinder 4. Simultaneously, the winch plate 516 on the regulating cylinder 4 is used to agitate the activated sludge settled at the bottom of aeration tank 1. (The air pump 507 is started, injecting air from the air cylinder guide pipe 508 into the exhaust pipe 521 for diffusion; the second motor 513 is started, driving the regulating cylinder 4 to rotate; the hydraulic rod 519 is started, extending its output end, causing the transmission plate 518 to drive the winch plate 516 to overcome the torque of the torsion spring 517 and rotate on the receiving trough 515 towards the outside of the regulating cylinder 4. This causes the winch plate 516 to continuously lift and agitate the activated sludge at the bottom of aeration tank 1 as the regulating cylinder 4 rotates, allowing the activated sludge to diffuse in the wastewater.) Air bubbles diffused in exhaust pipe 521 are broken into smaller bubbles by rotating impact plate 523 and diffuser 522, overflowing from collection tank 515 and mixing with sludge. Motor 505 is started, driving screw 504 to rotate, allowing regulating cylinder 4 connected to vertical rod 2 to move in aeration tank 1. Synchronous motor 509 is started, driving directional rod 510 to swing back and forth slightly, causing rafter 511 to drive regulating cylinder 4 on vertical rod 2 to swing slightly. When the sewage volume is small or the sewage pollution level is low, motor 3 529 is started, driving winding roller 527 to wind wire rope 528, causing sealing plate 524 to overcome the elastic force of spring 1 525 and move into winch plate 516, thereby releasing sealing plate 524 from drag reduction tank 526 and increasing the amount of sewage passing through drag reduction tank 526. Step 2: When the device, especially the regulating cylinder 4, needs maintenance or replacement after prolonged use, use the quick-release module 6 to remove the regulating cylinder 4 from the vertical rod 2. After maintenance or replacement, reinstall it. (When maintenance is required, start the synchronous motor 509, which will drive the reversing rod 510 to rotate a certain angle, allowing the vertical rod 2 to rotate the regulating cylinder 4 out of the aeration tank 1. This overcomes the torque of the torsion spring 608, rotating the buckle 606 to release the locking tooth 607 and overcoming the elasticity of the return spring 605 to lift the lock upwards.) Set plate 602, release the locking plate 602 from the rotating shaft 501, and move the adjusting cylinder 4 from the vertical rod 2. After the maintenance is completed, reverse the above steps and reinstall the adjusting cylinder 4 on the vertical rod 2. Start the synchronous motor 509 again so that the vertical rod 2 is perpendicular to the bottom of the aeration tank 1. Before the convex plate 609 rotates to coincide with the positioning plate 610, overcome the elastic force of the tension spring 612 to pull the pin 611. After the convex plate 609 coincides with the positioning plate 610, release the pin 611 so that the pin 611 is inserted into the convex plate 609 and the positioning plate 610.

[0023] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A biological wastewater treatment system, characterized in that, include: Aeration tank (1); Two vertical rods (2) are symmetrical to each other. The two vertical rods (2) are fixedly connected by the same connecting rod (3), and the two vertical rods (2) are provided with the same adjusting cylinder (4). The adjusting cylinder (4) is located below the connecting rod (3) and is located inside the aeration tank (1). Controllable hoisting module (5), the controllable hoisting module (5) is located on the regulating cylinder (4), the controllable hoisting module (5) is used to control the intensity of hoisting and stirring the activated sludge at the bottom of the aeration tank (1) according to the amount of sewage in the aeration tank (1) or the degree of sewage pollution.

2. The biological wastewater treatment system according to claim 1, characterized in that, The controllable winch module (5) includes two symmetrical rotating shafts (501). Both rotating shafts (501) are fixedly connected to the side opposite to the adjusting cylinder (4). The rotating shafts (501) are both located on the vertical rod (2) on the same side. An external gear ring (512) is fixedly connected to the outside of one of the rotating shafts (501). A second motor (513) is fixedly connected to the outside of the vertical rod (2) on the same side as the external gear ring (512). The output end of the second motor (513) is connected to a first gear (514) through a coupling. Gear 1 (514) meshes with external gear ring (512), and another rotating shaft (501) has a round hole. An exhaust pipe (521) is fixedly connected to the inner wall of the round hole. The exhaust pipe (521) is located inside the regulating cylinder (4). Multiple equally spaced exhaust holes are provided on the exhaust pipe (521). A rotating joint (520) is movably connected to the end of the exhaust pipe (521) away from the regulating cylinder (4). A guide pipe (508) is fixedly connected to the end of the rotating joint (520) away from the exhaust pipe (521).

3. The biological wastewater treatment system according to claim 2, characterized in that, An air pump (507) is fixedly connected to the upper side of the connecting rod (3). The output end of the air pump (507) is connected to the end of the air guide pipe (508) away from the regulating cylinder (4) through a thin tube. Two symmetrical horizontal frames (502) are fixedly connected to the upper side of the aeration tank (1). A round rod (503) and a lead screw (504) are movably connected to the inner walls of the two horizontal frames (502). A slider (506) is provided on the outside of both the round rod (503) and the lead screw (504). A motor (505) is fixedly connected to the outside of the horizontal frame (502) on the same side as the lead screw (504). The output end of the motor (505) is connected to one side of the lead screw (504) through a coupling.

4. A biological wastewater treatment system according to claim 3, characterized in that, The two sliders (506) are movably connected to the outside of the vertical rod (2) on the same side on opposite sides. The upper side of each slider (506) is fixedly connected to a fixing plate. The outside of each fixing plate is fixedly connected to a synchronous motor (509). The output ends of the two synchronous motors (509) are connected to a deflector rod (510) through a coupling. The deflector rod (510) is provided with a slot. The inner wall of the slot is slidably connected to a rafter (511). The rafter (511) is fixedly connected to the outside of the vertical rod (2) on the same side on opposite sides.

5. A biological wastewater treatment system according to claim 4, characterized in that, The regulating cylinder (4) has three circumferentially equidistantly distributed storage slots (515) on its outer side. A circular shaft is movably connected to the inner wall of each storage slot (515), and a winch plate (516) is movably connected to the outer side of each circular shaft. Two symmetrical torsion springs (517) surround each circular shaft. One end of each torsion spring (517) is fixedly connected to the outer side of the winch plate (516), and the other end is fixedly connected to the inner wall of the storage slot (515). A transmission plate (518) is fixedly connected to the outer side of each winch plate (516). The inner wall of the section cylinder (4) is movably connected to three circumferentially distributed hydraulic rods (519). The output ends of the hydraulic rods (519) are movably connected to the outside of the transmission plate (518) on the same side. The outside of the exhaust pipe (521) is provided with a diffuser (522). The outside of the diffuser (522) is provided with multiple circumferentially distributed circular holes. The diffuser (522) is fixedly connected to the inner wall of the regulating cylinder (4) on the opposite side. The outside of the diffuser (522) is fixedly connected with multiple circumferentially distributed striking plates (523).

6. A biological wastewater treatment system according to claim 5, characterized in that, Each of the three winch plates (516) has a sliding groove, and a closing plate (524) is slidably connected inside the sliding groove. Multiple equidistant springs (525) are fixedly connected to the outside of each closing plate (524). The other end of each spring (525) is fixedly connected to the inner wall of the sliding groove. Two symmetrical protrusions are fixedly connected to the inner wall of each sliding groove. A winding roller (527) is movably connected to each protrusion, and a wire rope (52) is fixedly connected to each winding roller (527). 8) The end of the wire rope (528) away from the winding roller (527) is fixedly connected to the outside of the closed plate (524) on the same side. The inner wall of the chute is fixedly connected to two symmetrical motors (529). The output end of the motors (529) is connected to one side of the winding roller (527) through a coupling. Multiple equally spaced drag-reducing grooves (526) are opened on the winch plate (516). Quick-release modules (6) are set on the two vertical rods (2).

7. A biological wastewater treatment system according to claim 6, characterized in that, Both quick-release modules (6) include a sliding groove (601), which is opened on the vertical rod (2). The outer side of the rotating shaft (501) is slidably connected to the bottom inner wall of the sliding groove (601). A locking plate (602) is slidably connected inside the sliding groove (601). The bottom of the locking plate (602) is slidably connected to the bottom of the rotating shaft (501). Two symmetrical guide rods (603) are fixedly connected to the upper side of the locking plate (602). The same mounting plate (604) is slidably connected to the outer side of the two guide rods (603). The mounting plate (604) is fixedly connected to the side opposite to the vertical rod (2). A return spring (605) is provided on the outer side of the guide rod (603).

8. A biological wastewater treatment system according to claim 7, characterized in that, Both vertical rods (2) are fixedly connected to the outside of a boss, and a short shaft is movably connected to the boss. A buckle (606) is provided on the outside of the short shaft, and a torsion spring (608) is fixedly connected to the outside of the short shaft. The end of the torsion spring (608) away from the short shaft is fixedly connected to the inner wall of the buckle (606). Locking teeth (607) are fixedly connected to the outside of both locking plates (602), and the outside of the locking teeth (607) is engaged with the outside of the buckle (606).

9. A biological wastewater treatment system according to claim 8, characterized in that, Both vertical rods (2) are fixedly connected to the outside of a convex plate (609), and both sliders (506) are fixedly connected to the outside of a positioning plate (610). The positioning plate (610) is attached to the side opposite to the convex plate (609), and both the positioning plate (610) and the convex plate (609) have openings. The same pin (611) is inserted into the opening. A tension spring (612) is provided on the outside of the pin (611). One end of the tension spring (612) is fixedly connected to the outside of the positioning plate (610), and the other end is fixedly connected to the outside of the tension spring (612).

10. A biological wastewater treatment method, using a biological wastewater treatment system as described in claim 9, characterized in that, Includes the following steps: Step 1: After injecting the wastewater to be treated into the aeration tank (1), the volume of wastewater in the aeration tank (1) and the degree of pollution of the wastewater are judged. The controllable winch module (5) is used to make the regulating cylinder (4) continuously inject air into the wastewater. At the same time, the winch plate (516) on the regulating cylinder (4) is used to winch and stir the activated sludge settled at the bottom of the aeration tank (1). Step 2: When the device needs to be repaired or replaced, especially the regulating cylinder (4), after a long period of use, use the quick-release module (6) to remove the regulating cylinder (4) from the vertical rod (2). After the repair or replacement is completed, reinstall it.

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