A targeted microbial degradation device

Abstract

The application discloses a targeted microbial degradation device, which comprises a degradation pool, a baffle movably arranged in the degradation pool, an elastic air bag fixedly arranged on a drainage outlet, a connecting rod connected to the top of the elastic air bag, a plug connected to the connecting rod above the drainage outlet, a first magnetic body arranged in the plug, a second magnetic body arranged on the drainage outlet, a first float arranged on the connecting rod, a one-way air inlet and a one-way air outlet arranged on the elastic air bag, an exhaust cavity connected to the one-way air outlet through a pipeline, a movable rod vertically penetrating into the bottom of the exhaust cavity, a second float arranged on the movable rod outside the exhaust cavity and higher than an anaerobic microbial filler layer, and a sealing cap arranged on the top of the movable rod and used for sealing an air outlet hole of the top of the exhaust cavity. The targeted microbial degradation device can adjust the water level of each batch of sewage, and can avoid the exposure of the anaerobic microbial filler layer in the air due to the low water level after drainage.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewage treatment equipment, and specifically relates to a targeted microbial degradation device. BACKGROUND

[0002] The microbial degradation tank is widely applied to the fields of municipal sewage, industrial wastewater and agricultural wastewater treatment as a high-efficiency organic wastewater treatment device. The core principle thereof is to perform targeted decomposition of pollutants by specific microbial populations, and the anaerobic microbial population has a significant advantage in deep degradation of complex organic matter in an oxygen-free environment. In recent years, with the progress of synthetic biology technology, high-efficiency anaerobic strains that are directed to domestication of specific pollutants have gradually realized engineering application.

[0003] In the prior art, the targeted microbial degradation tank mostly adopts a sequencing batch operation mode. However, after a batch of sewage treatment is completed, the volume of each batch of sewage is different, and the volume of the existing microbial degradation tank is mostly fixed, so the volume cannot be adjusted according to the amount of sewage, which may cause the packing layer of anaerobic microorganisms to be exposed to air due to too little amount of sewage. Moreover, the traditional drainage structure has significant defects: the drainage equipment relies on manual control, and when the treated sewage is drained, the liquid level in the microbial degradation tank drops to a too low level, which causes the anaerobic microorganisms attached to the packing layer to be directly exposed to air. Since the anaerobic microorganisms have high sensitivity to the concentration of dissolved oxygen, such exposure will trigger the following chain reactions: 1. Inhibition of anaerobic microbial activity, contact with oxygen in the air will instantaneously change the permeability of the microbial cell membrane, leading to inactivation of the anaerobic microorganisms due to conformational changes in the key enzyme system; 2. Physical peeling of the long-term running biofilm under repeated wet-dry alternating action, resulting in loss of biomass, significantly increasing the cost of system restart; 3. The facultative anaerobic bacteria obtain a competitive advantage in the oxygen-exposed environment, which destroys the proportional balance of the original functional flora, directly affects the population number of anaerobic microorganisms, and affects the denitrification and phosphorus removal efficiency. SUMMARY

[0004] The targeted microbial degradation device provided by the application has a movable baffle in the microbial degradation tank, the volume of the degradation tank can be adjusted by moving the baffle, the water level of each batch of sewage is adjusted, the water level of the sewage is higher than the packing layer of anaerobic microorganisms, and the water level after drainage is higher than the packing layer of anaerobic microorganisms, so that the packing layer of anaerobic microorganisms is prevented from being exposed to air due to too low water level after drainage, and as much treated sewage as possible can be drained by moving the baffle.

[0005] In order to solve the above technical problems, the present application is solved by the following technical scheme: a targeted microbial degradation device, comprising a degradation tank, a water inlet channel is arranged on the degradation tank, a drainage outlet is arranged at the bottom of the degradation tank, a microbial filler support frame is arranged in the degradation tank, at least an anaerobic microbial filler layer is arranged on the microbial filler support frame, a baffle is movably arranged in the degradation tank, the baffle can be moved to change the bottom area of the sewage containing part, a longitudinally telescopic elastic air bag is fixedly arranged on the drainage outlet, the top of the elastic air bag is connected with a connecting rod, the connecting rod extends above the drainage outlet and is connected with a plug, a first magnetic body is arranged in the plug, a second magnetic body is arranged on the drainage outlet, a first float is arranged on the connecting rod, a one-way air inlet and a one-way air outlet are arranged on the elastic air bag, the one-way air outlet is connected with an exhaust cavity higher than the anaerobic microbial filler layer through a pipeline, a movable rod is vertically penetrated into the bottom of the exhaust cavity, a second float higher than the anaerobic microbial filler layer is arranged on the movable rod outside the exhaust cavity, and a sealing cap for plugging the air outlet of the top of the exhaust cavity is arranged at the top of the movable rod. After the sewage is injected, due to the different amounts of sewage in each batch, the bottom area of the sewage containing part can be adjusted by moving the baffle, so as to adjust the water level height, and at least ensure that the sewage can flood the anaerobic microbial filler layer; when the water is drained, the bottom area of the sewage containing part can be reduced by moving the baffle, so that the water level of the sewage rises, in the process of rising 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 of the first magnetic body and the second magnetic body, the first float will drive the connecting rod to rise rapidly, the elastic air bag is opened, and the elastic air bag takes in air from the one-way air inlet, then maintains the inflation state, in the process of gradually discharging the sewage from the drainage outlet, the liquid level gradually decreases, at the high liquid level, the second float is always in the floating state, and the sealing cap always plugs the air outlet at the top of the exhaust cavity, so the gas in the elastic air bag cannot be discharged, when the liquid level decreases to the height at which the second float can move downward, the sealing cap moves downward to make the air outlet communicate with the external atmosphere, the gas in the elastic air bag can be quickly discharged, so that the elastic air bag and the connecting rod fall rapidly, and the drainage outlet is plugged by the plug, by arranging the second float at a position higher than the anaerobic microbial filler layer, the anaerobic microbial filler layer can be prevented from being exposed to air after the water level is lower than the anaerobic microbial filler layer, and by moving the baffle to drain, as much treated sewage as possible can be discharged.

[0006] In the above technical scheme, preferably, the first float comprises a first cylindrical sleeve and a first air bag 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 rod radially screwed into the top of the cylindrical sleeve to abut against the connecting rod. By adopting this structure, the first float can be fixed at a suitable position on the connecting rod by the first screw rod, so as to open the drainage outlet at different water levels to discharge sewage under different requirements.

[0007] In the technical scheme, preferably, the second float comprises a second cylindrical sleeve and a second air bag fixed outside the second cylindrical sleeve, the second cylindrical sleeve movably sleeving the movable rod and being fixed by a second screw rod radially screwed into the top of the cylindrical sleeve to abut against the movable rod. The structure can fix the second float at a suitable position of the movable rod by the second screw rod to adapt to the plugging of the drainage outlet at different water levels under different requirements.

[0008] In the technical scheme, preferably, the baffle is connected with the side wall of the degradation tank through an elastic fold part, and the elastic fold part can be elongated or shortened with the movement of the baffle. The structure is used to increase the sealing performance of the baffle and the sewage containing part of the degradation tank to avoid sewage leakage.

[0009] In the technical scheme, preferably, installation cavities are arranged 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 the side wall of the degradation tank is provided with a plurality of limiting grooves for inserting the limiting plate. The structure can firmly position the baffle by inserting the limiting plate into the limiting groove, and the limiting plate can be pressed into the installation cavity to adjust the positioning position of the baffle.

[0010] In the technical scheme, preferably, a lifting piece is movably arranged on the top of the baffle, a first cable is arranged between the lifting piece and the limiting plate, and the lifting piece is lifted to separate the limiting plates on both sides from the limiting grooves. The structure can further conveniently pull the baffle into the installation cavity. Under the condition that the lifting piece is not forced, the elastic force of the spring inserts the limiting plate into the limiting groove. When the lifting piece 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 the position. After the adjustment is completed, the lifting piece is released, and the elastic force of the spring automatically inserts the limiting plate into the limiting groove to complete the positioning of the baffle.

[0011] In the technical scheme, preferably, transition rods higher than the lifting piece 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 piece, and the second cable is connected to a winch on the top of the transition rod. The structure makes the pulling force of the second cable lift the lifting piece to pull the limiting plate into the installation cavity, and on the other hand, the transverse separation of the second cable drives the baffle to move, so that the movement of the baffle can be realized by winding the second cable by the winch.

[0012] In the technical scheme, preferably, the degradation tank is provided with a guide strip along the sliding direction of the baffle, a plurality of microbial filler support frames are slidably arranged on the guide strip, a transverse sliding groove is arranged on each of the microbial filler support frames, a sliding block is arranged in each transverse sliding groove, the sliding blocks in adjacent two transverse sliding grooves are rotationally connected to two ends of an oscillating arm, and the oscillating arm on the microbial filler support frame close to the baffle is rotationally connected to the baffle. The structure can adjust the spacing between the microbial filler support frames during the movement of the baffle, can make the microbial filler support frames more evenly distributed when the baffle increases the volume of the degradation tank, can gather the microbial filler support frames when the baffle increases the volume of the degradation tank or drains water, and can avoid interfering with the movement of the baffle, so that more treated sewage can be drained.

[0013] In the technical scheme, preferably, the microbial filler support frame comprises 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. The structure can make the aerobic microorganisms and the anaerobic microorganisms synergistically act on the sewage treatment tank for sewage treatment, and can improve the sewage treatment effect.

[0014] In the technical scheme, preferably, the degradation tank is provided with a sedimentation tank below, 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, and a water outlet of the sewage mixing device is located above the water inlet channel. 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 concentration may affect the activity of the microorganisms and the treatment efficiency. Therefore, the sewage mixing device is used to dilute the high-concentration sewage, the low-concentration sewage or dilution water is injected into the sewage mixing device according to the need, the diluted sewage is discharged to the water inlet channel and then enters the degradation tank, the concentration of the sewage can be adjusted to a more suitable concentration, and the sewage treatment efficiency can be improved.

[0015] Compared with the prior art, the targeted microbial degradation device has the following beneficial effects: after the sewage is injected, due to the different amounts of sewage in each batch, the water level height can be adjusted by adjusting the bottom area of the sewage containing part through the movement of the baffle, so as to at least ensure that the sewage can submerge the anaerobic microbial filler layer; when the water is drained, the bottom area of the sewage containing part can be reduced through the movement of the baffle, so that the water level of the sewage rises, in the process of the water level rising, the buoyancy assembly of the first float increases, when the buoyancy of the first float is greater than the magnetic attraction force of the first magnetic body and the second magnetic body, the first float will drive the connecting rod to rise rapidly, the elastic air bag is opened, and the elastic air bag inhales air from the one-way air inlet, and then remains in the inflated state, in the process of the sewage being gradually drained from the drain outlet, the liquid level gradually decreases, at the high liquid level, the second float is always in the floating state, and the sealing cap always blocks the air outlet at the top of the exhaust cavity, so that the gas in the elastic air bag cannot be discharged, when the liquid level decreases to the height at which the second float can be lowered, the sealing cap is lowered to make the air outlet communicate with the external atmosphere, and the gas in the elastic air bag can be quickly discharged, so that the elastic air bag and the connecting rod fall rapidly, and the drain outlet is blocked by the plug, by arranging the second float at a position higher than the anaerobic microbial filler layer, the anaerobic microbial filler layer can be prevented from being exposed to air after the water level is lower than the anaerobic microbial filler layer, and by moving the baffle to drain, as much treated sewage as possible can be drained. BRIEF DESCRIPTION OF DRAWINGS

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

[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 the embodiment of the present application.

[0018] Figure 3 It is a schematic diagram of the local sectional structure of the cooperation between the baffle and the side wall of the degradation tank in the embodiment of the present application.

[0019] Figure 4 It is a schematic diagram of the connection structure of the microbial filler support frame in the embodiment of the present application.

[0020] Figure 5 It is a schematic diagram of the structure of the microbial filler support frame in the embodiment of the present application.

[0021] Figure 6 It is a schematic diagram of the local sectional structure of the position of the drain outlet in the embodiment of the present application. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below in combination with the drawings and specific embodiments: refer to Figures 1 to 6The utility model provides a kind of targeted microbial degradation device, including degradation pool 1, water inlet channel 2 is provided on degradation pool 1, drainage outlet 3 is provided at the bottom of degradation pool 1, microbial filler support frame 4 is provided in degradation pool 1, anaerobic microbial filler layer and aerobic microbial filler layer are provided on microbial filler support frame 4, wherein aerobic microbial filler layer is located above anaerobic microbial filler layer, and the setting place of good sample microbial filler layer can be provided with aeration pipeline according to need, movable baffle 5 is movably provided in degradation pool 1, baffle 5 can be moved to change the bottom area of sewage containing part, vertically telescopic elastic air bag 6 is fixedly provided on drainage outlet 3, the top of elastic air bag 6 is connected with connecting rod 7, connecting rod 7 extends to the top of drainage outlet 3 and is connected with plug 8, first magnetic body 9 is provided in plug 8, second magnetic body 10 is provided on drainage outlet 3, first magnetic body 9 and second magnetic body 10 generate magnetic attraction force to fix plug 8 in drainage outlet 3, first magnetic body 9 and second magnetic body 10 are both magnets, of course, one of them can be ferromagnetic material, first float 11 is provided on connecting rod 7, one-way air inlet 12 and one-way air outlet 13 are provided on elastic air bag 6, one-way air outlet 13 is connected with exhaust cavity 14 higher than anaerobic microbial filler layer by pipeline, movable rod 15 is vertically penetrated in the bottom of exhaust cavity 14, second float 16 higher than anaerobic microbial filler layer is provided on movable rod 15 outside exhaust cavity 14, sealing cap 18 for plugging the air outlet 17 of the top of exhaust cavity 14 is provided on the top of movable rod 15.This targeted microbial degradation device can adjust the bottom area of sewage containing part by the movement of baffle 5 after injecting sewage, so as to adjust water level height, at least ensure that sewage can submerge anaerobic microbial filler layer, can reduce the bottom area of sewage containing part by the movement of baffle 5 when draining, so that the water level of sewage rises, in the process of water level rising, the buoyancy assembly of first float 11 increases, when the buoyancy of first float 11 is greater than the magnetic attraction force of first magnetic body 9 and second magnetic body 10, first float 11 will drive connecting rod 7 to rise rapidly, expand elastic air bag 6, and elastic air bag 6 is inflated from one-way air inlet 12, then keep the inflation state, in the process that sewage is gradually drained from drainage outlet 3, liquid level gradually drops, in high liquid level, second float 16 is always in floating state, sealing cap 18 always plugs the air outlet 17 of the top of exhaust cavity 14, so the gas in elastic air bag 6 cannot be discharged, when liquid level drops to the height that second float 16 can move down, sealing cap 18 moves down to make air outlet 17 communicate with external atmosphere, the gas in elastic air bag 6 can be discharged rapidly, so that elastic air bag 6 and connecting rod 7 fall rapidly, and plug 8 plugs drainage outlet 3, by setting second float 16 at the position higher than anaerobic microbial filler layer, can avoid that water level is lower than anaerobic microbial filler layer after draining, so that anaerobic microbial filler layer is exposed to air, and by the movement of baffle 5, as much as possible treated sewage can be drained.

[0023] In this embodiment, the first float 11 comprises a first cylindrical sleeve 19 and a first air bag 20 fixed outside the first cylindrical sleeve 19, the first cylindrical sleeve 19 movably sleeved on the connecting rod 7 and fixed by a first screw rod 21 radially screwed into the first cylindrical sleeve 19 against the connecting rod 7. With this structure, the first float 11 can be fixed at a suitable position on the connecting rod 7 by the first screw rod 21 to adapt to different requirements of opening the drain port 3 at different water levels to discharge sewage.

[0024] In this embodiment, the second float 16 comprises a second cylindrical sleeve 22 and a second air bag 23 fixed outside the second cylindrical sleeve 22, the second cylindrical sleeve 22 movably sleeved on the movable rod 15 and fixed by a second screw rod 24 radially screwed into the second cylindrical sleeve 22 against the movable rod 15. With this structure, the second float 16 can be fixed at a suitable position on the movable rod 15 by the second screw rod 24 to adapt to different requirements of plugging the drain port 3 at different water levels.

[0025] In this embodiment, the baffle 5 is connected to the side wall of the degradation tank 1 through an elastic pleat 25, which can be elongated or shortened with the movement of the baffle 5. To avoid corrosion and aging of the elastic pleat 25, the inner wall of the elastic pleat 25 can be coated with polytetrafluoroethylene for corrosion protection. This structure is used to increase the sealing performance of the baffle 5 and the sewage containing part of the degradation tank 1 to prevent sewage leakage.

[0026] In this embodiment, the baffle 5 is provided with mounting cavities 26 on both sides, the mounting cavities 26 movably provided with limiting plates 27, springs 28 provided between the limiting plates 27 and the inner walls of the mounting cavities 26, and the side wall of the degradation tank 1 is provided with a plurality of limiting grooves 29 for inserting the limiting plates 27. With this structure, the limiting plates 27 inserted into the limiting grooves 29 can firmly position the baffle 5, and the limiting plates 27 can be pressed into the mounting cavities 26 to adjust the positioning position of the baffle 5.

[0027] In this embodiment, the baffle 5 is movably provided with a lifting piece 30 on the top, a first cable 31 is provided between the lifting piece 30 and the limiting plate 27, and the lifting piece 30 is lifted to disengage the limiting plates 27 on both sides from the limiting grooves 29. Referring to Figure 3, the pulling piece 30 is similar to a handle, convenient for manual operation, the bottom has a connecting rod extending into the inside passage of the baffle 5, the connecting rod and the limiting plate 27 are provided with the first pull rope 31, the structure can further conveniently pull the baffle 5 into the installation cavity 26, under the condition that the pulling piece 30 is not forced, the elastic force of the spring 28 inserts the limiting plate 27 into the limiting groove 29, when the pulling piece 30 is lifted, the first pull rope 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 the position, after the adjustment is completed, the pulling piece 30 is released, the elastic force of the spring 28 makes the limiting plate 27 automatically inserted into the limiting groove 29 to complete the positioning of the baffle 5.

[0028] In the embodiment, the baffle 5 is provided with a transition rod 51 higher than the pulling piece 30 and perpendicular to the moving direction of the baffle 5 on both sides, and two second pull ropes 32 are connected to the pulling piece 30, and the two second pull ropes 32 are connected to two different winches (not shown in the figure) on both sides by passing around the top of the transition rod 51. The structure makes the pulling force of the second pull rope 32 lift the pulling piece 30 to pull the limiting plate 27 into the installation cavity 26, and on the other hand, the transverse separation drives the baffle 5 to move, so that the movement of the baffle 5 can be realized by winding the second pull rope 32 by the winch, and the movement of the baffle 5 towards both sides can be realized by the operation of winding and unwinding the second pull rope 32 by the two winches.

[0029] In the embodiment, the degradation tank 1 is provided with a guide strip 33 along the sliding direction of the baffle 5, a plurality of microbial filler support frames 4 are slidably arranged on the guide strip 33, a horizontal sliding groove 34 is arranged on each of the plurality of microbial filler support frames 4, a sliding block is arranged in the horizontal sliding groove 34, the sliding blocks in the adjacent two horizontal sliding grooves 34 are rotationally connected to the two ends of a swing arm 35, and the swing arm 35 on the microbial filler support frame 4 close to the baffle 5 is rotationally connected to the baffle 5. The structure can adjust the spacing between the microbial filler support frames 4 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, and the microbial filler support frames 4 can be gathered when the baffle 5 increases the volume of the degradation tank 1 or drains water, so as to avoid interfering with the movement of the baffle 5 and make as much treated wastewater as possible be discharged.

[0030] In the 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. The structure makes the aerobic microorganisms and anaerobic microorganisms cooperate in the wastewater treatment tank to treat wastewater and improve the wastewater treatment effect.

[0031] In the embodiment, the sedimentation tank 38 is arranged below the degradation tank 1, the water inlet channel 2 is arranged above the degradation tank 1, the sewage mixing device 39 is arranged above the water inlet channel 2, the sewage mixing device 39 is connected with the sewage inlet pipeline 40 and the dilution water pipeline 41, the agitator is arranged in the sewage mixing device 39, the agitator is driven by the motor, and the water outlet of the sewage mixing device 39 is arranged above the water inlet channel 2. The concentration of the sewage to be treated is high or low, and the microbial sewage treatment has a more suitable concentration, and too high or too low may affect the activity of the microorganisms and the treatment efficiency, so the high-concentration sewage is first discharged to the water inlet channel 2 through the sewage mixing device 39 after being diluted by injecting a certain amount of low-concentration sewage or dilution water according to the need, and then enters the degradation tank 1, so that the sewage can be adjusted to a more suitable concentration, and the sewage treatment efficiency is improved.

[0032] The above is only the preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A targeted microbial degradation device, comprising a degradation tank (1), wherein a water inlet channel (2) is arranged on the degradation tank (1), a water outlet (3) is arranged at the bottom of the degradation tank (1), and a microbial filler support frame (4) is arranged in the degradation tank (1), wherein at least an anaerobic microbial filler layer is arranged on the microbial filler support frame (4), characterized in that: The degradation tank (1) is movably provided with a baffle (5), the baffle (5) can be moved to change the bottom area of sewage containing part, the drain outlet (3) is fixedly provided with a longitudinally telescopic elastic air bag (6), the top of the elastic air bag (6) is connected with a connecting rod (7), the connecting rod (7) extends to the drain outlet (3) and is connected with a plug (8), the plug (8) is provided with a first magnetic body (9), the drain outlet (3) is provided with a second magnetic body (10), the connecting rod (7) is provided with a first float (11), the elastic air bag (6) is provided with a one-way air inlet (12) and a one-way air outlet (13), the one-way air outlet (13) is connected with an exhaust cavity (14) higher than the anaerobic microbial filler layer through a pipeline, the bottom of the exhaust cavity (14) is vertically penetrated by a movable rod (15), the movable rod (15) located outside the exhaust cavity (14) is provided with a second float (16) higher than the anaerobic microbial filler layer, the top of the movable rod (15) is provided with a sealing cap (18) for plugging an air outlet (17) of the top of the exhaust cavity (14), the first float (11) comprises a first cylindrical sleeve (19) and a first air bag (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 is fixed by a first screw rod (21) radially screwed into the first cylindrical sleeve (19) to abut against the connecting rod (7), the second float (16) comprises a second cylindrical sleeve (22) and a second air bag (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 is fixed by a second screw rod (24) radially screwed into the second cylindrical sleeve (22) to abut against the movable rod (15). ​ 2. A targeted microbial degradation device as in claim 1, wherein: The baffle (5) and the side wall of the degradation tank (1) are connected through an elastic fold part (25), the elastic fold part (25) can be elongated or shortened with the movement of the baffle (5).

3. A targeted microbial degradation device as in claim 2, wherein: The baffle (5) is provided with a mounting cavity (26) on both sides, 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), and the side wall of the degradation tank (1) is provided with a plurality of limiting grooves (29) for inserting the limiting plate (27).

4. A targeted microbial degradation device as in claim 3, wherein: A pulling piece (30) is movably arranged on the top of the baffle (5), a first pull rope (31) is arranged between the pulling piece (30) and the limiting plate (27), and the pulling piece (30) is lifted to separate the limiting plates (27) on both sides from the limiting grooves (29).

5. A targeted microbial degradation device as in claim 4, wherein: Transition rods (51) higher than the pulling piece (30) and perpendicular to the moving direction of the baffle (5) are arranged on both sides of the baffle (5), at least one second pull rope (32) is connected to the winch by passing around the top of the transition rod (51).

6. A targeted microbial degradation device as in claim 1, wherein: The degradation tank (1) is provided with a guide strip (33) along the sliding direction of the baffle (5), a plurality of microbial filler support frames (4) are slidably arranged on the guide strip (33), a plurality of transverse sliding grooves (34) are arranged on the microbial filler support frames (4), a sliding block is arranged in the transverse sliding groove (34), the sliding blocks in the adjacent two transverse sliding grooves (34) are rotatably connected to two ends of a swing arm (35), and the swing arm (35) on the microbial filler support frame (4) close to the baffle (5) is rotatably connected to the baffle (5).

7. A targeted microbial degradation device as claimed in claim 1 or 6, wherein: The microbial filler support frame (4) comprises 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).

8. A targeted microbial degradation device as in claim 1, wherein: A sedimentation tank (38) is arranged below the degradation tank (1), the water inlet channel (2) is arranged 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 pipeline (40) and a dilution water pipeline (41), a stirrer is arranged in the sewage mixing device (39), and a water outlet of the sewage mixing device (39) is located above the water inlet channel (2).

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