Targeted microbial degradation device

Abstract

The targeted microbial degradation device comprises a degradation pool, a baffle is movably arranged in the degradation pool and can move to change the bottom area of a sewage containing part, an elastic air bag is fixedly arranged on a water outlet, the top of the elastic air bag is connected with a connecting rod, and the connecting rod extends to the position above the water outlet to be connected with a plug. A first magnetic body is arranged in the plug, a second magnetic body is arranged on the water outlet, a first floater is arranged on the connecting rod, a one-way air inlet and a one-way air outlet are formed in the elastic air bag, the one-way air outlet is connected with an exhaust cavity through a pipeline, and a movable rod vertically penetrates through the bottom of the exhaust cavity. A second floater higher than the anaerobic microorganism filler layer is arranged on the movable rod on the outer side of the exhaust cavity, and a sealing cap for blocking an air outlet hole in the top of the exhaust cavity is arranged at the top of the movable rod. The targeted microbial degradation device can adjust the water level of each batch of sewage, and avoids exposure of a filler layer of anaerobic microorganisms in the air due to too low water level after drainage.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment equipment, and specifically relates to a targeted microorganism degradation device. Background Art

[0002] As an efficient organic wastewater treatment device, the microbial degradation tank is widely used in the fields of municipal sewage, industrial wastewater and agricultural wastewater treatment. Its core principle is to target and decompose pollutants through specific microbial populations. Among them, anaerobic microbial populations have significant advantages in deeply degrading complex organic matter in an anaerobic environment. In recent years, with the progress of synthetic biology technology, highly efficient anaerobic strains domestically tamed for specific pollutants have gradually been applied in engineering.

[0003] In the prior art, the targeted microorganism degradation tank mostly adopts a sequential batch operation mode. However, after completing a batch of sewage treatment, since the amount of sewage in each batch is different and the volume of the existing microbial degradation tank is mostly fixed, it is impossible to adjust the volume according to the amount of sewage, which may cause the packing layer of anaerobic microorganisms to be exposed to air due to too little sewage. And the traditional drainage structure has significant defects: the drainage equipment relies on manual control. When the treated sewage is discharged, the liquid level in the microbial degradation tank drops to too low a level, which will cause the anaerobic microorganisms attached to the packing layer to be directly exposed to the air. Due to the high sensitivity of anaerobic microorganisms to the dissolved oxygen concentration, this exposure will trigger the following chain reactions: 1. Inhibition of anaerobic microbial activity. Contacting the oxygen in the air will instantaneously change the permeability of the microbial cell membrane, resulting in the conformational change and inactivation of the key enzyme systems of anaerobic microorganisms; 2. The physical peeling of the biofilm during long-term operation under the repeated wet-dry alternation will lead to the loss of biomass, significantly increasing the system restart cost; 3. Facultative anaerobes gain a competitive advantage in an oxygen-exposed environment, disrupting the proportional balance of the original functional flora, directly affecting the population of anaerobic microorganisms, and affecting the nitrogen and phosphorus removal efficiency. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a targeted microorganism degradation device. The microbial degradation tank of this targeted microorganism degradation device is provided with a movable baffle. By moving the baffle, the volume of the degradation tank can be adjusted, thereby adjusting the water level of the sewage in each batch, making the water level of the sewage higher than the packing layer of anaerobic microorganisms, and ensuring that the water level after drainage is higher than the packing layer of anaerobic microorganisms, avoiding the exposure of the packing layer of anaerobic microorganisms to the air due to too low water level after drainage, and the drained water can discharge as much treated sewage as possible through the movement of the baffle.

[0005] To solve the above technical problems, the present invention is solved by the following technical solutions: A targeted microbial degradation device, comprising a degradation tank, an inlet channel is provided on the degradation tank, a drain outlet is provided at the bottom of the degradation tank, a microbial packing support frame is provided in the degradation tank, and at least an anaerobic microbial packing layer is provided on the microbial packing support frame. A baffle is movably provided in the degradation tank, and the baffle can move to change the bottom area of the sewage receiving part. An elastically expandable airbag that can be longitudinally telescoped is fixedly provided on the drain outlet. The top of the elastically expandable airbag is connected to a connecting rod, and the connecting rod extends above the drain outlet and is connected to a plug. A first magnetic body is provided in the plug, a second magnetic body is provided on the drain outlet, a first float is provided on the connecting rod, and a one-way air inlet and a one-way air outlet are provided on the elastically expandable airbag. The one-way air outlet is connected to an exhaust chamber higher than the anaerobic microbial packing layer through a pipe. A movable rod vertically penetrates the bottom of the exhaust chamber, and a second float higher than the anaerobic microbial packing layer is provided on the movable rod outside the exhaust chamber. A sealing cap for blocking the air outlet at the top of the exhaust chamber is provided at the top of the movable rod. After injecting sewage into this targeted microbial degradation device, since the amounts of sewage in each batch are different, the bottom area of the sewage receiving part can be adjusted by moving the baffle, thereby adjusting the water level height to at least ensure that the sewage can submerge the anaerobic microbial packing layer; when draining water, the bottom area of the sewage receiving part can be reduced by moving the baffle, so that the water level of the sewage rises. During the rising process of the water level, the buoyancy component of the first float increases. When the buoyancy of the first float is greater than the magnetic attraction force between the first magnetic body and the second magnetic body, the first float will drive the connecting rod to rise rapidly, expand the elastically expandable airbag, and the elastically expandable airbag intakes air from the one-way air inlet and then remains in an expanded state. During the process of the sewage gradually draining out from the drain outlet, the liquid level gradually drops. At a high liquid level, the second float is always in a floating state, and the sealing cap always blocks the air outlet at the top of the exhaust chamber. Therefore, the gas in the elastically expandable airbag cannot be discharged. When the liquid level drops to the height at which the second float can move down, the sealing cap moves down to make the air outlet communicate with the external atmosphere, and the gas in the elastically expandable airbag can be quickly discharged, causing the elastically expandable airbag and the connecting rod to quickly fall, and the drain outlet is blocked by the plug. By setting the second float at a position higher than the anaerobic microbial packing layer, it is possible to prevent the anaerobic microbial packing layer from being exposed to the air due to the water level being lower than the anaerobic microbial packing layer after draining, and as much treated sewage as possible can be discharged by draining through the movement of the baffle.

[0006] In the above technical solution, preferably, the first float includes a first cylindrical sleeve and a first airbag fixed to the outside of the first cylindrical sleeve. The first cylindrical sleeve is movably sleeved on the connecting rod and is fixed by a first screw that radially screws into the cylindrical sleeve and abuts against the connecting rod. Adopting this structure can fix the first float at a suitable position on the connecting rod through the first screw to adapt to opening the drain outlet at different water levels to drain sewage under different requirements.

[0007] In the above technical solution, preferably, the second float includes a second cylindrical sleeve and a second airbag fixed to the outside of the second cylindrical sleeve. The second cylindrical sleeve is movably sleeved on the movable rod and fixed by a second screw that is radially screwed into the cylindrical sleeve to abut against the movable rod. With this structure, the second float can be fixed at a suitable position on the movable rod by the second screw to block the drain opening at different water levels to meet different requirements.

[0008] In the above technical solution, preferably, the baffle is connected to the side wall of the degradation tank through an elastic corrugated portion, and the elastic corrugated portion can be elongated or shortened as the baffle moves. This structure is used to increase the sealing performance of the sewage containing portion surrounded by the baffle and the degradation tank and prevent sewage leakage.

[0009] In the above technical solution, preferably, installation cavities are provided on both sides of the baffle. A limiting plate is movably arranged in the installation cavity, a spring is arranged between the limiting plate and the inner wall of the installation cavity, and a plurality of limiting grooves for the limiting plate to insert are provided on the side wall of the degradation tank. With this structure, when the limiting plate is inserted into the limiting groove, the baffle can be firmly positioned, and the limiting plate can be pressed into the installation cavity to adjust the positioning position of the baffle.

[0010] In the above technical solution, preferably, a lifting member is interactively arranged on the top of the baffle. A first cable is arranged between the lifting member and the limiting plate. When the lifting member is lifted, the limiting plates on both sides are disengaged from the limiting grooves. With this structure, it is further convenient to pull the baffle into the installation cavity. When no force is applied to the lifting member, the elastic force of the spring inserts the limiting plate into the limiting groove. When the lifting member is lifted, the first cable pulls the limiting plate so that the limiting plate is pulled into the installation cavity. At this time, the baffle can be moved to adjust its position. After the adjustment is completed, the lifting member is released, and the elastic force of the spring makes the limiting plate automatically insert into the limiting groove to complete the positioning of the baffle.

[0011] In the above technical solution, preferably, transition rods higher than the lifting member and perpendicular to the moving direction of the baffle are arranged on both sides of the baffle. At least one second cable is connected to the lifting member. The second cable bypasses the top of the transition rod and is connected to a winch. With this structure, on the one hand, the pulling force of the second cable lifts the lifting member so that the limiting plate is pulled into the installation cavity, and on the other hand, its lateral separation drives the baffle to move. Therefore, the movement of the baffle can be realized by the winch winding the second cable.

[0012] In the above technical solution, preferably, guide bars are arranged in the degradation tank along the sliding direction of the baffle. A plurality of microbial filler support frames are slidably arranged on the guide bars. Transverse chutes are arranged on each of the plurality of microbial filler support frames. Sliders are arranged in the transverse chutes. The sliders in two adjacent transverse chutes are rotatably connected to two ends of a swing arm. The swing arm on the microbial filler support frame close to the baffle side is rotatably connected to the baffle. With this structure, the distance between the microbial filler support frames can be adjusted during the movement of the baffle, so that the microbial filler support frames can be more evenly distributed when the baffle increases the volume of the degradation tank. When the baffle increases the volume of the degradation tank or drains water, the microbial filler support frames can be gathered and interference with the movement of the baffle can be avoided, so that as much treated sewage as possible can be discharged.

[0013] In the above technical solution, preferably, the microbial filler support frame includes an anaerobic microbial support part and an aerobic microbial support part, and the aerobic microbial support part is located above the anaerobic microbial support part. With this structure, aerobic microorganisms and anaerobic microorganisms can act synergistically in the sewage treatment tank for sewage treatment, improving the sewage treatment effect.

[0014] In the above technical solution, preferably, a sedimentation tank is arranged below the degradation tank. The water inlet channel is located above the degradation tank. A sewage mixing device is arranged above the water inlet channel. The sewage mixing device is connected with a sewage inlet pipe and a dilution water pipe. A stirrer is arranged in the sewage mixing device. The water outlet of the sewage mixing device is located above the water inlet channel. Since the concentration of the sewage to be treated is high or low, and microbial sewage treatment has a more suitable concentration, too high or too low may affect the activity of microorganisms and the treatment efficiency. Therefore, by first passing the high-concentration sewage through the sewage mixing device, injecting a certain amount of low-concentration sewage or dilution water as needed, diluting it and then discharging it into the water inlet channel and then into the degradation tank, the sewage can be adjusted to a more suitable concentration, improving the sewage treatment efficiency.

[0015] Compared with the prior art, the present invention has the following beneficial effects: after the targeted microbial degradation device is injected with sewage, the bottom area of the sewage holding part can be adjusted by moving the baffle plate due to the different amounts of sewage in each batch, thereby adjusting the water level and at least ensuring that the sewage can submerge the anaerobic microbial filler layer; when draining water, the bottom area of the sewage holding part can be reduced by moving the baffle plate, thereby causing the sewage water level to rise. During the process of rising water level, the buoyancy component of the first float increases. When the buoyancy of the first float is greater than the magnetic attraction of the first magnetic body and the second magnetic body, the first float will drive the connecting rod to rise rapidly, expand the elastic airbag, and the elastic airbag takes in air from the one-way air inlet, and then remains in an expanded state. As the sewage is gradually discharged from the drain outlet, the liquid level gradually decreases. When the liquid level is high, the second float is always in a floating state, and the sealing cap always blocks the air outlet at the top of the exhaust chamber. Therefore, the gas in the elastic airbag cannot be discharged. When the liquid level drops to a height at which the second float can move downward, the sealing cap moves downward to connect the air outlet with the external atmosphere, and the gas in the elastic airbag can be quickly discharged, causing the elastic airbag and the connecting rod to fall rapidly, and the drain outlet is blocked by the plug. By setting the second float at a position higher than the anaerobic microbial filler layer, it is possible to avoid the water level being lower than the anaerobic microbial filler layer after drainage, thereby preventing the anaerobic microbial filler layer from being exposed to the air, and as much treated sewage as possible can be discharged by the movement of the baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of the local structure of the connection between the degradation tank and the water inlet channel in an embodiment of the present invention.

[0018] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the baffle and the side wall of the degradation tank in the embodiment of the present invention.

[0019] Figure 4 Schematic diagram of the connection structure of the microbial filler support frame in an embodiment of the present invention.

[0020] Figure 5 Schematic diagram of the structure of the microbial filler support frame in an embodiment of the present invention.

[0021] Figure 6 It is a partial cross-sectional structural schematic diagram of the drain outlet position in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figures 1 to 6, A targeted microbial degradation device, including a degradation tank 1, an inlet channel 2 is arranged on the degradation tank 1, a drain port 3 is arranged at the bottom of the degradation tank 1, a microbial packing support frame 4 is arranged in the degradation tank 1, and an anaerobic microbial packing layer and an aerobic microbial packing layer are arranged on the microbial packing support frame 4. Among them, the aerobic microbial packing layer is located above the anaerobic microbial packing layer. An aeration pipe can be arranged at the location where the aerobic microbial packing layer is set as required. A baffle 5 is movably arranged in the degradation tank 1. The baffle 5 can move to change the bottom area of the sewage accommodating part. A longitudinally telescopic elastic airbag 6 is fixedly arranged on the drain port 3. A connecting rod 7 is connected to the top of the elastic airbag 6. The connecting rod 7 extends above the drain port 3 and is connected to a plug 8. A first magnetic body 9 is arranged in the plug 8. A second magnetic body 10 is arranged on the drain port 3. A magnetic attraction force is generated between the first magnetic body 9 and the second magnetic body 10 to fix the plug 8 in the drain port 3. Both the first magnetic body 9 and the second magnetic body 10 are magnets. Of course, one of them can also be a ferromagnetic material. A first float 11 is arranged on the connecting rod 7. A one-way air inlet 12 and a one-way air outlet 13 are arranged on the elastic airbag 6. The one-way air outlet 13 is connected to an exhaust cavity 14 higher than the anaerobic microbial packing layer through a pipe. A movable rod 15 vertically penetrates the bottom of the exhaust cavity 14. A second float 16 higher than the anaerobic microbial packing layer is arranged on the movable rod 15 outside the exhaust cavity 14. A sealing cap 18 for blocking the air outlet hole 17 at the top of the exhaust cavity 14 is arranged at the top of the movable rod 15. After injecting sewage into this targeted microbial degradation device, due to the different amounts of sewage in each batch, the bottom area of the sewage accommodating part can be adjusted by moving the baffle 5, so as to adjust the water level height, at least ensuring that the sewage can submerge the anaerobic microbial packing layer; when draining water, the bottom area of the sewage accommodating part can be reduced by moving the baffle 5, so that the water level of the sewage rises. During the rising process of the water level, the buoyancy component of the first float 11 increases. When the buoyancy of the first float 11 is greater than the magnetic attraction force between the first magnetic body 9 and the second magnetic body 10, the first float 11 will drive the connecting rod 7 to rise rapidly, expand the elastic airbag 6, and the elastic airbag 6 intakes air from the one-way air inlet 12 and then remains in an inflated state. During the process of the sewage gradually draining out from the drain port 3, the liquid level gradually drops. At a high liquid level, the second float 16 is always in a floating state, and the sealing cap 18 always blocks the air outlet hole 17 at the top of the exhaust cavity 14. Therefore, the gas in the elastic airbag 6 cannot be discharged. When the liquid level drops to the height at which the second float 16 can move downward, the sealing cap 18 moves downward to connect the air outlet hole 17 with the external atmosphere, and the gas in the elastic airbag 6 can be quickly discharged, so that the elastic airbag 6 and the connecting rod 7 quickly fall, and the drain port 3 is blocked by the plug 8. By setting the second float 16 at a position higher than the anaerobic microbial packing layer, it can be avoided that the anaerobic microbial packing layer is exposed to the air due to the water level being lower than the anaerobic microbial packing layer after draining water, and as much treated sewage as possible can be discharged by moving the baffle 5 to drain water.

[0023] In this embodiment, the first float 11 includes a first cylindrical sleeve 19 and a first airbag 20 fixed to the outside of the first cylindrical sleeve 19. The first cylindrical sleeve 19 is movably sleeved on the connecting rod 7 and fixed by a first screw 21 screwed radially into the first cylindrical sleeve 19 to abut against the connecting rod 7. With this structure, the first float 11 can be fixed at a suitable position on the connecting rod 7 through the first screw 21 to open the drain port 3 at different water levels to drain sewage according to different requirements.

[0024] In this embodiment, the second float 16 includes a second cylindrical sleeve 22 and a second airbag 23 fixed to the outside of the second cylindrical sleeve 22. The second cylindrical sleeve 22 is movably sleeved on the movable rod 15 and fixed by a second screw 24 screwed radially into the second cylindrical sleeve 22 to abut against the movable rod 15. With this structure, the second float 16 can be fixed at a suitable position on the movable rod 15 through the second screw 24 to block the drain port 3 at different water levels according to different requirements.

[0025] In this embodiment, the baffle 5 is connected to the side wall of the degradation tank 1 through an elastic corrugated portion 25. The elastic corrugated portion 25 can be elongated or shortened as the baffle 5 moves. To prevent the elastic corrugated portion 25 from being corroded and aged by sewage, the inner wall of the elastic corrugated portion 25 can be coated with polytetrafluoroethylene for anti-corrosion treatment. With this structure, it is used to increase the sealing performance of the sewage containing portion surrounded by the baffle 5 and the degradation tank 1 and prevent sewage leakage.

[0026] In this embodiment, mounting cavities 26 are provided on both sides of the baffle 5. A limiting plate 27 is movably arranged in the mounting cavity 26. A spring 28 is arranged between the limiting plate 27 and the inner wall of the mounting cavity 26. A plurality of limiting grooves 29 for the limiting plate 27 to insert are provided on the side wall of the degradation tank 1. With this structure, when the limiting plate 27 is inserted into the limiting groove 29, the baffle 5 can be firmly positioned, and the limiting plate 27 can be pressed into the mounting cavity 26 to adjust the positioning position of the baffle 5.

[0027] In this embodiment, a lifting member 30 is interactively provided at the top of the baffle 5. A first cable 31 is arranged between the lifting member 30 and the limiting plate 27. When the lifting member 30 is lifted, the limiting plates 27 on both sides are disengaged from the limiting grooves 29. See Figure 3, the lifting member 30 is similar to a handle, which facilitates manual operation. It has a connecting rod at the bottom extending into the inner channel of the baffle 5. A first cable 31 is arranged between the connecting rod and the limiting plate 27. With this structure, it is further convenient to pull the baffle 5 into the installation cavity 26. When no force is applied to the lifting member 30, the elastic force of the spring 28 inserts the limiting plate 27 into the limiting groove 29. When the lifting member 30 is lifted, the first cable 31 pulls the limiting plate 27 so that the limiting plate 27 is pulled into the installation cavity 26. At this time, the baffle 5 can be moved to adjust its position. After the adjustment is completed, the lifting member 30 is released, and the elastic force of the spring 28 makes the limiting plate 27 automatically insert into the limiting groove 29 to complete the positioning of the baffle 5.

[0028] In this embodiment, transition rods 51 higher than the lifting member 30 and perpendicular to the moving direction of the baffle 5 are arranged on both sides of the baffle 5. Two second cables 32 are connected to the lifting member 30. The two second cables 32 respectively bypass the tops of the transition rods 51 towards both sides and are connected to two different winches (not shown in the figure) located on both sides. With this structure, the tension of the second cable 32 can, on the one hand, lift the lifting member 30 so that the limiting plate 27 is pulled into the installation cavity 26, and on the other hand, its lateral separation drives the baffle 5 to move. Thus, the movement of the baffle 5 can be realized by the winches winding the second cables 32, and the baffle 5 can be moved towards both sides by the operation of the two winches to take in and release the second cables 32.

[0029] In this embodiment, guide strips 33 along the sliding direction of the baffle 5 are arranged in the degradation tank 1. A plurality of microbial filler support frames 4 are slidably arranged on the guide strips 33. Transverse chutes 34 are provided on each of the plurality of microbial filler support frames 4. Sliders are arranged in the transverse chutes 34. The sliders in adjacent two transverse chutes 34 are rotatably connected to both ends of a swing arm 35. The swing arm 35 on the microbial filler support frame 4 close to the baffle 5 is rotatably connected to the baffle 5. With this structure, the distance between the microbial filler support frames 4 can be adjusted during the movement of the baffle 5, so that the microbial filler support frames 4 can be more evenly distributed when the baffle 5 increases the volume of the degradation tank 1. When the baffle 5 increases the volume of the degradation tank 1 or drains water, the microbial filler support frames 4 can be gathered and interference with the movement of the baffle 5 can be avoided, so that as much treated sewage as possible can be discharged.

[0030] In this embodiment, the microbial filler support frame 4 includes an anaerobic microbial support part 36 and an aerobic microbial support part 37, and the aerobic microbial support part 37 is located above the anaerobic microbial support part 36. With this structure, aerobic microorganisms and anaerobic microorganisms can cooperate to carry out sewage treatment in this sewage treatment tank, improving the sewage treatment effect.

[0031] In this embodiment, a sedimentation tank 38 is arranged below the degradation tank 1. The water inlet channel 2 is located above the degradation tank 1. A sewage mixing device 39 is arranged above the water inlet channel 2. The sewage mixing device 39 is connected with a sewage inlet pipe 40 and a dilution water pipe 41. A stirrer is arranged in the sewage mixing device 39 and is driven by a motor. The water outlet of the sewage mixing device 39 is located above the water inlet channel 2. Since the concentration of the sewage to be treated is high or low, and the microbial sewage treatment has a relatively suitable concentration, too high or too low may affect the activity of the microorganisms and the treatment efficiency. Therefore, by passing the high-concentration sewage through the sewage mixing device 39 first, injecting a certain amount of low-concentration sewage or dilution water as needed, diluting it and then discharging it into the water inlet channel 2 and then into the degradation tank 1, the sewage can be adjusted to a more suitable concentration, improving the sewage treatment efficiency.

[0032] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A targeted microbial degradation device, comprising a degradation tank (1), an inlet channel (2) is arranged on the degradation tank (1), a drain outlet (3) is arranged at the bottom of the degradation tank (1), a microbial packing support frame (4) is arranged in the degradation tank (1), and at least an anaerobic microbial packing layer is arranged on the microbial packing support frame (4), characterized in that: A baffle (5) is movably arranged in the degradation tank (1), and the baffle (5) can move to change the bottom area of the sewage accommodating part. An elastically expandable airbag (6) is fixedly arranged on the drain outlet (3). The top of the elastically expandable airbag (6) is connected with a connecting rod (7). The connecting rod (7) extends above the drain outlet (3) and is connected with a plug (8). A first magnetic body (9) is arranged in the plug (8), and a second magnetic body (10) is arranged on the drain outlet (3). A first float (11) is arranged on the connecting rod (7). A one-way air inlet (12) and a one-way air outlet (13) are arranged on the elastically expandable airbag (6). The one-way air outlet (13) is connected with an exhaust cavity (14) higher than the anaerobic microorganism filler layer through a pipeline. A movable rod (15) vertically penetrates into the bottom of the exhaust cavity (14). A second float (16) higher than the anaerobic microorganism filler layer is arranged on the movable rod (15) outside the exhaust cavity (14). A sealing cap (18) for plugging an air outlet hole (17) at the top of the exhaust cavity (14) is arranged at the top of the movable rod (15).

2. The targeted microbial degradation device according to claim 1, characterized in that: The first float (11) includes a first cylindrical sleeve (19) and a first airbag (20) fixed on the outer side of the first cylindrical sleeve (19). The first cylindrical sleeve (19) is movably sleeved on the connecting rod (7) and is fixed by a first screw rod (21) radially screwed into the first cylindrical sleeve (19) to press against the connecting rod (7).

3. The targeted microbial degradation device according to claim 1, wherein: The second float (16) includes a second cylindrical sleeve (22) and a second airbag (23) fixed on the outer side of the second cylindrical sleeve (22). The second cylindrical sleeve (22) is movably sleeved on the movable rod (15) and is fixed by a second screw rod (24) radially screwed into the second cylindrical sleeve (22) to press against the movable rod (15).

4. The targeted microbial degradation device according to claim 1, characterized in that: The baffle (5) is connected with the side wall of the degradation tank (1) through an elastic fold part (25), and the elastic fold part (25) can be elongated or shortened as the baffle (5) moves.

5. The targeted microbial degradation device according to claim 4, wherein: Installation cavities (26) are arranged on both sides of the baffle (5). A limiting plate (27) is movably arranged in the installation cavities (26). A spring (28) is arranged between the limiting plate (27) and the inner wall of the installation cavities (26). A plurality of limiting grooves (29) for the limiting plate (27) to insert are arranged on the side wall of the degradation tank (1).

6. The targeted microbial degradation device according to claim 5, wherein: A lifting part (30) is interactively arranged at the top of the baffle (5). A first cable (31) is arranged between the lifting part (30) and the limiting plate (27). The lifting part (30) is lifted to disengage the limiting plates (27) on both sides from the limiting grooves (29).

7. The targeted microbial degradation device according to claim 6, characterized in that: Transition rods (51) higher than the lifting part (30) and perpendicular to the moving direction of the baffle (5) are arranged on both sides of the baffle (5). At least one second cable (32) is connected to the lifting part (30). The second cable (32) bypasses the top of the transition rod (51) and is connected to a winch.

8. The targeted microbial degradation device according to claim 1, characterized in that: A guiding strip (33) along the sliding direction of the baffle (5) is arranged in the degradation tank (1). A plurality of the microbial filler support frames (4) are slidably arranged on the guiding strip (33). Transverse chutes (34) are arranged on each of the plurality of the microbial filler support frames (4). Sliders are arranged in the transverse chutes (34). The sliders in two adjacent transverse chutes (34) are rotatably connected to two ends of a swing arm (35). The swing arm (35) on the microbial filler support frame (4) close to the baffle (5) side is rotatably connected to the baffle (5).

9. The targeted microbial degradation device according to claim 1 or 8, characterized in that: The microbial filler support frame (4) includes an anaerobic microbial support part (36) and an aerobic microbial support part (37). The aerobic microbial support part (37) is located above the anaerobic microbial support part (36).

10. A targeted microbial degradation device according to claim 1, characterized in that: A sedimentation tank (38) is arranged below the degradation tank (1). The water inlet channel (2) is located above the degradation tank (1). A sewage mixing device (39) is arranged above the water inlet channel (2). The sewage mixing device (39) is connected with a sewage inlet pipe (40) and a dilution water pipe (41). A stirrer is arranged in the sewage mixing device (39). The water outlet of the sewage mixing device (39) is located above the water inlet channel (2).

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