Water treatment aerobic process based on suspended fluid bed and water treatment equipment

Abstract

The invention discloses a suspended fluid bed-based water treatment aerobic process and water treatment equipment, and relates to the technical field of water treatment. The water treatment equipment based on the suspended fluid bed comprises a base, a treatment box is fixedly mounted on the base, filler is arranged in the treatment box, and the water treatment equipment is characterized by further comprising a plurality of strip-shaped pipes which are circumferentially distributed, the strip-shaped pipes are arranged at the inner bottom of the treatment box, a spray head is arranged at the top of each strip-shaped pipe, and the spray heads are arranged on the inner bottom of the treatment box. A driving part for driving the plurality of strip-shaped pipes to revolve around the axis of the treatment box is arranged at the bottom of the treatment box; the water inlet pipe and the water outlet pipe are mounted on the side wall of the treatment box, and the output end of the water inlet pipe and the input end of the water outlet pipe are both communicated with the treatment box; according to the invention, the limitation of dead angles caused by a traditional fixed aerator is broken through, so that bubbles can cover corners and weak structural areas of the reactor, the aeration area and uniformity are greatly improved, and the concentration of dissolved oxygen in the whole reaction area tends to be consistent.

Description

Technical Field

[0001] This invention belongs to the field of water treatment technology, and more specifically, relates to a water treatment device based on a suspended fluidized bed. Background Technology

[0002] The core of a suspended fluidized bed water treatment device is a reaction vessel filled with sewage and suspended packing material. An aeration device is installed at the bottom of the vessel, and a blower is connected to the outside. The interior of the device is filled with a large number of plastic biological packing materials with fine particle size and specific gravity close to that of water, providing a carrier for microorganisms to attach and grow. The packing material is continuously turned over under the action of the aeration device, and the microorganisms on the packing material complete the purification of sewage during the turning process.

[0003] In actual operation, since the bottom aeration devices are usually fixed, it is difficult to achieve an absolutely uniform distribution of the airflow within the reactor. This leads to the formation of aeration dead zones or areas with insufficient water flow in the corners of the reactor, weak areas where two airflows converge, and the backwater surface of internal structural components. In these areas, not only is the air-water mixing effect poor and the dissolved oxygen concentration low, but the suspended packing material, which has lost its driving force, will gradually stagnate and accumulate. The large accumulation of packing material in dead zones not only reduces the activity of microorganisms on these packing materials due to lack of oxygen, but also reduces the total amount of packing material participating in effective circulation, decreases the contact opportunity between biofilm and pollutants, and ultimately reduces the overall effective volume utilization rate and wastewater treatment efficiency of the equipment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a water treatment device based on a suspended fluidized bed that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: An aerobic water treatment process based on a suspended fluidized bed includes the following steps: S1. Continuously inject the pretreated wastewater into the water treatment equipment to keep the liquid level stable at the set height; S2. Compressed air is blown into the reaction zone to form tiny bubbles, so that the dissolved oxygen concentration in the reaction zone is maintained at 2mg-4mg / L; S3. Make the aeration device in the reaction zone revolve around the axis of the water treatment equipment; S4. Allow the air bubbles to be discharged into the water treatment equipment in a wavy path; S5. Utilizing the kinetic energy of rising bubbles, the suspended material is propelled to tumble and flow within the reaction zone, ensuring full contact between the biofilm on the packing surface and the wastewater.

[0006] To ensure the aeration effect, preferably, in step S2, the diameter of the bubbles is 0.2mm-3mm.

[0007] A water treatment device based on a suspended fluidized bed includes a base on which a treatment box is fixedly installed. The treatment box contains packing material. It also includes multiple circumferentially distributed strip tubes disposed at the bottom of the treatment box, each strip tube having a nozzle at its top. The bottom of the treatment box has a drive unit for driving the multiple strip tubes to revolve around the axis of the treatment box. An inlet pipe and an outlet pipe are installed on the side wall of the treatment box, with the outlet end of the inlet pipe and the inlet end of the outlet pipe both connected to the treatment box.

[0008] To improve the aeration range of the nozzle, preferably, the drive unit includes an air inlet pipe rotatably mounted at the bottom of the treatment box, the strip tube is fixedly mounted on the outer wall of the air inlet pipe, a drive motor is fixedly mounted at the bottom of the treatment box, and transmission gears are fixedly mounted on both the output shaft of the drive motor and the air inlet pipe, with the two transmission gears meshing with each other.

[0009] To enable the nozzle to move back and forth, a slide rail is fixedly installed on the strip tube, and a slide plate is slidably installed on the slide rail. The nozzle is installed on the slide plate. When the strip tube revolves around the treatment box, the nozzle slides back and forth on the slide rail following the slide plate.

[0010] To further automate the reciprocating movement of the nozzle, a mounting plate is fixedly connected to the end of the slide away from the air inlet pipe. A spring is installed between the mounting plate and the end of the strip tube. Rollers are installed on the outer wall of the mounting plate. Multiple circumferentially distributed protrusions are fixedly installed on the inner wall of the treatment box. When the rollers follow the strip tube and continuously revolve around the treatment box, the rollers will roll along the inner wall of the treatment box and press over the multiple protrusions in sequence.

[0011] To enable the nozzle to oscillate while moving back and forth, the upper end of the slide plate is provided with a slot, and the nozzle is rotatably installed in the slot via a rotating rod. The input end of the nozzle is connected to the strip tube via a flexible hose.

[0012] In order to keep the inner wall of the processing box clean, the processing box is further provided with a scraper that fits against the inner wall. The scraper has a guide slope inclined in its direction of movement. The scraper is fixedly connected to the strip tube through a connecting frame.

[0013] To further prevent the packing material from colliding with the scraper, the scraper is provided with multiple vertical holes near the guide slope. Each vertical hole has an exhaust hole extending to the surface of the guide slope. The bottom of the scraper is fixedly connected to an air intake hood that communicates with the vertical holes. The air intake hood is connected to the strip pipe through a branch pipe.

[0014] To further prevent the packing material from colliding with the scraper, the scraper is provided with an inner cavity, and the inner cavity has a drain hole that extends through to the surface of the guide slope. The water inlet pipe is connected to the inner cavity through a connecting part. The connecting part includes an end cap that is rotatably connected to the output end of the water inlet pipe. A horizontal pipe is fixedly connected to the outer wall of the end cap, and the end of the horizontal pipe extends into the inner cavity.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. This invention drives the air inlet pipe and strip pipe to revolve by driving the motor, so that the nozzle moves in a circle around the axis of the treatment box. The discharged bubbles rise in the water along a spiral path. This dynamic aeration method breaks the dead zone limitation caused by traditional fixed aerators, so that the bubbles can cover the corners and weak areas of the reactor, greatly improving the aeration area and uniformity, and ensuring that the dissolved oxygen concentration in the entire reaction zone tends to be consistent.

[0016] 2. This invention enables the nozzle to revolve and move back and forth on the strip tube while it revolves, with the protrusion and slide rail mechanism also driving it to do so. This creates a mesh-like structure for the nozzle's exhaust trajectory. This combined motion can effectively impact areas with insufficient water flow, such as the corners of the reactor, and re-entrain the suspended packing material that has stagnated there into the circulating flow, thus avoiding the problem of decreased biofilm activity caused by the accumulation of packing material in dead corners.

[0017] 3. In this invention, the strip tube rotates and drives the scraper to slide along the inner wall of the treatment tank, continuously scraping away the dirt attached to the inner wall. The guide slope set on the scraper can push the packing near the wall towards the axis, physically destroying the packing accumulation conditions in the edge area, keeping the inner wall of the reactor clean at all times, and avoiding the formation of a packing accumulation hotbed due to the accumulation of dirt on the wall.

[0018] 4. In this invention, air and wastewater are discharged from the guide slope surface through the exhaust holes and drainage holes on the scraper, respectively, forming a gas-liquid mixing barrier composed of bubbles and water flow in the slope area. This barrier provides aeration supplement to the reactor above and prevents the packing from directly colliding with the scraper slope through fluid pressure. This protects the structural integrity of the packing and improves the overall treatment efficiency by allowing the discharged liquid to participate in the aeration reaction immediately.

[0019] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of a water treatment device based on a suspended fluidized bed proposed in this invention. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of a water treatment device based on a suspended fluidized bed proposed in this invention. Figure 2 ; Figure 3 This is a partial structural schematic diagram of a water treatment device based on a suspended fluidized bed proposed in this invention; Figure 4 This is a schematic diagram of the scraper and horizontal pipe structure of a water treatment device based on a suspended fluidized bed proposed in this invention. Figure 5 This is a schematic diagram of the scraper isometric structure of a water treatment device based on a suspended fluidized bed proposed in this invention. Figure 6 This is a partial exploded view of a water treatment device based on a suspended fluidized bed proposed in this invention; Figure 7 This is a top view of a partial structure of a water treatment device based on a suspended fluidized bed proposed in this invention; Figure 8 This is a schematic diagram of the scraper cross-section structure of a water treatment device based on a suspended fluidized bed proposed in this invention.

[0021] In the diagram: 1. Base; 2. Processing box; 3. Nozzle; 4. Air inlet pipe; 5. Strip pipe; 6. Drive motor; 7. Transmission gear; 8. Water inlet pipe; 9. Drain pipe; 10. Slide plate; 11. Hose; 12. Slide rail; 13. Mounting plate; 14. Spring; 15. Roller; 16. Protrusion; 17. Groove; 18. Rotating rod; 19. Scraper; 20. Guide slope; 21. Connecting frame; 22. Branch pipe; 23. Air inlet hood; 24. Vertical hole; 25. Exhaust hole; 26. End cap; 27. Horizontal pipe; 28. Inner cavity; 29. ​​Drain hole; 30. Air source equipment; 31. Delivery pipe; 32. Packing material; 33. Guide plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] Example 1: An aerobic water treatment process based on a suspended fluidized bed, comprising the following steps: S1. Continuously inject the pretreated wastewater into the water treatment equipment to keep the liquid level stable at the set height; S2. Compressed air is blown into the reaction zone to form tiny bubbles with a diameter of 0.2mm-3mm, so that the dissolved oxygen concentration in the reaction zone is maintained at 2mg-4mg / L. S3. Make the aeration device in the reaction zone revolve around the axis of the water treatment equipment; S4. Allow the air bubbles to be discharged into the water treatment equipment in a wavy path; S5. The kinetic energy of rising bubbles is used to propel the suspended material in a flowing and tumbling motion within the reaction zone, so that the biofilm on the surface of packing 32 is in full contact with the wastewater.

[0024] Example 2: Refer to Figures 1-8 As shown, a water treatment device based on a suspended fluidized bed includes a base 1 for supporting the entire device. A treatment tank 2 is fixedly installed on the base 1. The treatment tank 2 is used to store and treat sewage and is cylindrical in shape. The treatment tank 2 contains packing material 32 and also includes multiple circumferentially distributed strip tubes 5 located at the bottom of the treatment tank 2. Each strip tube 5 has a nozzle 3 at its top for discharging air or oxygen. The bottom of the treatment tank 2 has a drive unit for driving the multiple strip tubes 5 to revolve around the axis of the treatment tank 2. The drive unit includes an air inlet pipe 4 rotatably mounted at the bottom of the treatment tank 2, a strip pipe 5 fixedly mounted on the outer wall of the air inlet pipe 4, a drive motor 6 fixedly mounted at the bottom of the treatment tank 2, and transmission gears 7 fixedly mounted on both the output shaft of the drive motor 6 and the air inlet pipe 4. The two transmission gears 7 are meshed and connected to each other. It also includes a water inlet pipe 8 for conveying sewage into the treatment tank 2 and a water outlet pipe 9 for discharging water from the treatment tank 2, which are mounted on the side wall of the treatment tank 2. The output end of the water inlet pipe 8 and the input end of the water outlet pipe 9 are both connected to the treatment tank 2.

[0025] Specifically, during use, wastewater is pumped into the treatment tank 2 through the inlet pipe 8, completely burying the packing material 32 inside the treatment tank 2. Then, the nozzles 3 on the strip pipe 5 continuously aerate the wastewater in the treatment tank 2, thus treating the wastewater. During this process, the drive motor 6 is started, which drives the air inlet pipe 4 to rotate continuously through two meshing transmission gears 7. The air inlet pipe 4 drives the strip pipe 5 on the outer wall to rotate continuously along the axis of the treatment tank 2, and the strip pipe 5 drives the nozzles 3 to rotate synchronously. This causes the air bubbles discharged from the nozzles 3 to be discharged into the treatment tank 2 in a spiral path, thereby significantly increasing the aeration area of ​​the nozzles 3. This results in a more uniform aeration effect for the wastewater and the packing material 32, making it less likely for the packing material 32 to accumulate, and thus improving the wastewater treatment effect.

[0026] Reference Figures 1-3 As shown, an air source device 30 is fixedly installed on the base 1. The air source device 30 is a fan used to provide aeration air source to the nozzle 3. The exhaust end of the air source device 30 is connected to a delivery pipe 31. The input end of the air inlet pipe 4 is rotatably connected to and communicates with the output end of the delivery pipe 31.

[0027] Specifically, when the nozzle 3 needs to continuously aerate the sewage, the air source device 30 is turned on. The air source device 30 will blow air into the air inlet pipe 4 through the delivery pipe 31, and the air inlet pipe 4 will blow air into the strip pipe 5. The strip pipe 5 will continuously supply air to the nozzle 3, thus completing the continuous aeration of the sewage.

[0028] Reference Figure 4 and Figure 5 As shown, guide plates 33 are fixedly connected to both sides of the strip tube 5. The axial cross-section of the guide plate 33 is a right triangle. Thus, when the strip tube 5 revolves, the guide plate 33 can scrape the inner bottom of the processing box 2, making it less likely for the inner bottom to stick together.

[0029] Example 3: Reference Figures 5-7 As shown, a water treatment device based on a suspended fluidized bed is basically the same as that in Example 1, but with a further improvement: A slide rail 12 is fixedly installed on the strip tube 5, and the slide rail 12 is parallel to the strip tube 5. A slide plate 10 is slidably installed on the slide rail 12, and the nozzle 3 is installed on the slide plate 10. When the strip tube 5 revolves around the treatment box 2, the nozzle 3 follows the slide plate 10 and slides back and forth on the slide rail 12. The specific structure for achieving the back and forth sliding is as follows: a mounting plate 13 is fixedly connected to one end of the slide plate 10 away from the air inlet pipe 4. A spring 14 is installed between the mounting plate 13 and the end of the strip tube 5. A roller 15 is installed on the outer wall of the mounting plate 13. Multiple circumferentially distributed protrusions 16 are fixedly installed on the inner wall of the treatment box 2. The protrusions 16 are semi-circular in shape. When the roller 15 follows the strip tube 5 and revolves around the treatment box 2, the roller 15 will roll along the inner wall of the treatment box 2 and press over the multiple protrusions 16 in sequence.

[0030] Specifically, when the strip tube 5 revolves around the axis of the treatment box 2, the strip tube 5 drives the roller 15 to continuously roll along the inner wall of the treatment box 2 and presses over multiple protrusions 16 in sequence. When the roller 15 presses on the protrusion 16, the roller 15 will be pressed by the protrusion 16 and will drive the slide plate 10 to slide in the direction of the axis of the treatment box 2, and drive the nozzle 3 to move synchronously, while compressing the spring 14. When the roller 15 passes over the protrusion 16, the spring 14 will elastically return to its original position, and drive the slide plate 10, roller 15 and nozzle 3 to move in the opposite direction to return to their original position. Thus, when the roller 15 presses over multiple protrusions 16, the nozzle 3 will move back and forth laterally, which can further increase the exhaust area of ​​the nozzle 3. Combined with the revolution of the nozzle 3 around the treatment box 2, the aeration area of ​​the nozzle 3 will be more uniform and the aeration effect will be significantly improved.

[0031] Reference Figure 6As shown, the upper end of the slide plate 10 is provided with a slot 17, which is rectangular in shape. The nozzle 3 is rotatably installed in the slot 17 via a rotating rod 18. The input end of the nozzle 3 is connected to the strip tube 5 via a hose 11. The hose 11 is made of rubber and is used to transport the gas in the strip tube 5 to the nozzle 3.

[0032] Specifically, when the slide plate 10 drives the nozzle 3 to swing back and forth, the hose 11 will always be connected to the lower end of the nozzle 3. At this time, under the limiting action of the rotating rod 18, the nozzle 3 will swing left and right in the slot 17 through the rotating rod 18, which will further increase the aeration area of ​​the nozzle 3 and make the sewage treatment effect better.

[0033] Example 4: Reference Figure 4 As shown, a water treatment device based on a suspended fluidized bed is basically the same as that in Example 2, but with a further improvement: The aforementioned processing box 2 is equipped with a scraper 19 that fits against its inner wall. The scraper 19 is provided with a guide slope 20 that is inclined in its moving direction. The inclination angle is between 10° and 45°, preferably 30°. The scraper 19 is fixedly connected to the strip tube 5 through a connecting frame 21. One side of the scraper 19 is an arc-shaped surface and is in close contact with the inner wall of the processing box 2. The two ends of the scraper 19 are shaped like a triangle under the action of the guide slope 20.

[0034] Specifically, during the revolution of the strip tube 5 around the axis of the treatment tank 2, the strip tube 5 will drive the scraper 19 to slide along the inner wall of the treatment tank 2 through the connecting frame 21. The scraper 19 can continuously scrape off the dirt on the inner wall of the treatment tank 2, keeping the inner wall of the treatment tank 2 clean, which can indirectly ensure the sewage treatment effect. Since the scraper 19 is provided with a guide slope 20, it will push the packing 32 close to the inner wall of the treatment tank 2 towards its axis, so that the packing 32 is not easy to accumulate in the inner wall area of ​​the treatment tank 2, improving the uniformity of the movement of the packing 32 in the treatment tank 2, and significantly improving the sewage treatment effect.

[0035] Reference Figure 8 As shown, the scraper 19 is provided with a plurality of vertical holes 24 near the guide slope 20. The vertical holes 24 are circular holes and are perpendicular to the inner bottom of the treatment tank 2. The vertical holes 24 are provided with exhaust holes 25 extending to the surface of the guide slope 20. A one-way valve is installed in the exhaust holes 25 to prevent water in the treatment tank 2 from flowing back into the exhaust holes 25. The bottom of the scraper 19 is fixedly connected to an air intake hood 23 that communicates with the vertical holes 24. The air intake hood 23 is connected to the strip pipe 5 through a branch pipe 22.

[0036] Specifically, during the operation of scraper 19, the air in strip pipe 5 will also enter air intake hood 23 through branch pipe 22, then enter vertical hole 24 from air intake hood 23, and finally be discharged from exhaust hole 25 on the surface of guide slope 20. On the one hand, it can supplement the sewage above treatment tank 2 with aeration, and on the other hand, it can form a mixed barrier of air bubbles and sewage on the surface of guide slope 20, making it difficult for packing 32 to directly contact and collide with guide slope 20, thus providing good protection for packing 32.

[0037] Reference Figure 4 and Figure 8 As shown, the scraper 19 has an inner cavity 28, and the inner cavity 28 has a drain hole 29 that extends through to the surface of the guide slope 20. The water inlet pipe 8 is connected to the inner cavity 28 through a connecting part. The connecting part includes an end cap 26 that is rotatably connected to the output end of the water inlet pipe 8. A horizontal pipe 27 is fixedly connected to the outer wall of the end cap 26, and the end of the horizontal pipe 27 extends into the inner cavity 28.

[0038] Specifically, during the water treatment process, the pretreated wastewater is continuously transported into the inlet pipe 8. The wastewater in the inlet pipe 8 enters the horizontal pipe 27 through the end cap 26. The horizontal pipe 27 transports the wastewater into the inner cavity 28 and finally discharges it from the drain hole 29 on the surface of the guide slope 20. This creates a high-pressure liquid zone on the surface of the guide slope 20. Combined with the air discharged from the vent hole 25, this makes it less likely for the packing 32 to collide with the surface of the guide slope 20. Furthermore, the liquid discharged from the drain hole 29 receives timely aeration, resulting in better wastewater treatment.

[0039] In addition, when the scraper 19 revolves with the strip tube 5, it will also drive the horizontal tube 27 to revolve synchronously. The horizontal tube 27 will then drive the end cap 26 to rotate at the end of the water inlet pipe 8 and maintain the connection.

[0040] Reference Figure 8 As shown, the exhaust direction of the exhaust hole 25 is inclined to the scraper 19 and opposite to the inclination direction of the guide slope 20. The inclination angle is basically the same as that of the guide slope 20, but the inclination is opposite. The drainage direction of the drain hole 29 is parallel to the exhaust direction of the exhaust hole 25.

[0041] Therefore, when liquid and gas are discharged simultaneously from the drain hole 29 and the vent hole 25, the packing 32 near the guide slope 20 will receive a boost, allowing the packing 32 to move more efficiently in the axial direction of the treatment box 2.

[0042] In use, wastewater is pumped into the treatment tank 2 through the inlet pipe 8, completely burying the packing material 32 inside the treatment tank 2. Then, the nozzles 3 on the strip pipe 5 continuously aerate the wastewater in the treatment tank 2, thus treating the wastewater. During this process, the drive motor 6 is started, which drives the air inlet pipe 4 to rotate continuously through two meshing transmission gears 7. The air inlet pipe 4 then drives the strip pipe 5 on the outer wall to continuously revolve along the axis of the treatment tank 2. Simultaneously, the air source device 30 is turned on. The equipment 30 blows air into the air inlet pipe 4 through the delivery pipe 31, which in turn blows air into the strip pipe 5. The strip pipe 5 continuously supplies air to the nozzle 3, thus completing the continuous aeration of the sewage. The revolving strip pipe 5 drives the nozzle 3 to revolve synchronously, causing the air bubbles discharged from the nozzle 3 to be discharged in the treatment tank 2 in a spiral path. This significantly increases the aeration area of ​​the nozzle 3, making the sewage and the packing material 32 receive a more uniform aeration effect, preventing the packing material 32 from accumulating, and thus improving the sewage treatment effect.

[0043] During the revolution of the strip tube 5 around the axis of the treatment tank 2, the strip tube 5 will drive the scraper 19 to slide along the inner wall of the treatment tank 2 through the connecting frame 21. The scraper 19 can continuously scrape off the dirt on the inner wall of the treatment tank 2, keeping the inner wall of the treatment tank 2 clean, which can indirectly ensure the sewage treatment effect. Since the scraper 19 is provided with a guide slope 20, it will push the packing 32 close to the inner wall of the treatment tank 2 towards its axis, so that the packing 32 is not easy to accumulate in the inner wall area of ​​the treatment tank 2, improving the uniformity of the movement of the packing 32 in the treatment tank 2, and significantly improving the sewage treatment effect.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been described above with reference to preferred embodiments, it is not intended to limit the present invention. Any modifications or alterations made by those skilled in the art without departing from the scope of the present invention using the above-described technical content can be considered as equivalent embodiments. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An aerobic water treatment process based on a suspended fluidized bed, characterized in that, Includes the following steps: S1. Continuously inject the pretreated wastewater into the water treatment equipment to keep the liquid level stable at the set height; S2. Compressed air is blown into the reaction zone to form tiny bubbles, so that the dissolved oxygen concentration in the reaction zone is maintained at 2mg-4mg / L; S3. Make the aeration device in the reaction zone revolve around the axis of the water treatment equipment; S4. Allow the air bubbles to be discharged into the water treatment equipment in a wavy path; S5. Utilize the kinetic energy of rising bubbles to propel suspended materials in a flowing and tumbling motion within the reaction zone, so that the biofilm on the surface of the packing material (32) comes into full contact with the wastewater. The water treatment equipment includes a base (1), on which a treatment tank (2) is fixedly installed. The treatment tank (2) contains packing material (32), and also includes: Multiple circumferentially distributed strip tubes (5) are arranged at the inner bottom of the processing box (2). Each of the strip tubes (5) is provided with a nozzle (3) at the top, and the bottom of the treatment box (2) is provided with a drive unit that drives multiple strip tubes (5) to revolve around the axis of the treatment box (2). The inlet pipe (8) and the outlet pipe (9) are installed on the side wall of the treatment box (2). The output end of the inlet pipe (8) and the input end of the outlet pipe (9) are both connected to the treatment box (2). A slide rail (12) is fixedly installed on the strip tube (5), and a slide plate (10) is slidably installed on the slide rail (12). The nozzle (3) is installed on the slide plate (10). When the strip tube (5) revolves around the treatment box (2), the nozzle (3) slides back and forth on the slide rail (12) following the slide plate (10). A mounting plate (13) is fixedly connected to one end of the slide plate (10) away from the air intake pipe (4). A spring (14) is installed between the mounting plate (13) and the end of the strip tube (5). A roller (15) is installed on the outer wall of the mounting plate (13). A plurality of circumferentially distributed protrusions (16) are fixedly installed on the inner wall of the processing box (2). When the roller (15) follows the strip tube (5) and continuously revolves around the processing box (2), the roller (15) will roll along the inner wall of the processing box (2) and press over the plurality of protrusions (16) in sequence.

2. The aerobic water treatment process based on a suspended fluidized bed according to claim 1, characterized in that, In step S2, the diameter of the bubble is 0.2mm-3mm.

3. The aerobic water treatment process based on a suspended fluidized bed according to claim 1, characterized in that, The drive unit includes an air inlet pipe (4) rotatably mounted at the bottom of the processing box (2), a strip pipe (5) fixedly mounted on the outer wall of the air inlet pipe (4), a drive motor (6) fixedly mounted at the bottom of the processing box (2), and transmission gears (7) fixedly mounted on both the output shaft of the drive motor (6) and the air inlet pipe (4), and the two transmission gears (7) meshing with each other.

4. The aerobic water treatment process based on a suspended fluidized bed according to claim 1, characterized in that, The upper end of the slide plate (10) is provided with a slot (17), and the nozzle (3) is rotatably installed in the slot (17) by means of a rotating rod (18). The input end of the nozzle (3) is connected to the strip tube (5) through a hose (11).

5. The aerobic water treatment process based on a suspended fluidized bed according to claim 1, characterized in that, The processing box (2) is provided with a scraper (19) that fits against its inner wall. The scraper (19) is provided with a guide slope (20) that is inclined in its moving direction. The scraper (19) is fixedly connected to the strip tube (5) through a connecting frame (21).

6. The aerobic water treatment process based on a suspended fluidized bed according to claim 5, characterized in that, The scraper (19) is provided with a plurality of vertical holes (24) near the guide slope (20). The vertical holes (24) are provided with exhaust holes (25) extending to the surface of the guide slope (20). The bottom of the scraper (19) is fixedly connected to an air intake hood (23) communicating with the vertical holes (24). The air intake hood (23) is connected to the strip pipe (5) through a branch pipe (22).

7. The aerobic water treatment process based on a suspended fluidized bed according to claim 6, characterized in that, The scraper (19) has an inner cavity (28), and the inner cavity (28) has a drain hole (29) that extends through to the surface of the guide slope (20). The water inlet pipe (8) is connected to the inner cavity (28) through a connecting part. The connecting part includes an end cap (26) rotatably connected to the output end of the water inlet pipe (8), and a horizontal pipe (27) is fixedly connected to the outer wall of the end cap (26), with the end of the horizontal pipe (27) extending into the inner cavity (28).

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