Integrated equipment for rapid denitrification of sewage

Abstract

The application discloses a kind of sewage rapid denitrification integrated equipment, including vertically arranged rotating shaft, rotating shaft includes the aeration section with aeration passage in inside, aeration passage is connected with several first aeration pipe, first aeration pipe is provided with the first one-way air outlet nozzle of vertical direction air outlet, first air inlet sleeve is rotationally sealed and arranged on the outer wall of aeration section, first air inlet hole is arranged on the side wall of aeration section, first air inlet sleeve is connected with gas conveying pipe, the second aeration pipe of radially extending is arranged on aeration section, the second one-way air outlet nozzle of lateral air outlet is arranged on second aeration pipe, impeller is rotationally arranged in aeration passage, impeller is connected with the rotationally sealed cooperation of rotating cylinder with aeration section inner wall, rotating cylinder side wall is provided with first through hole, and first through hole can be intermittently aligned with second aeration pipe with the rotation of rotating cylinder.This kind of sewage rapid denitrification integrated equipment can change the position of aerator air outlet by the change of gas supply interval, reduce the foam layer and floating sludge generated by excessive disturbance sewage.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewage treatment equipment, and specifically relates to a sewage rapid denitrification integrated equipment. BACKGROUND

[0002] With the acceleration of urbanization and the increasingly strict environmental protection standards, sewage denitrification treatment has become a key link in the field of water pollution control. The traditional activated sludge method realizes the conversion of ammonia nitrogen to nitrogen gas through nitrification and denitrification, wherein nitrifying bacteria rely on aeration for oxygen supply, and denitrifying bacteria need to carry out metabolism in an anoxic environment. However, the existing integrated denitrification equipment still has technical bottlenecks in actual operation, which restricts the treatment efficiency and stability.

[0003] In the current mainstream technology, the aeration tank mainly uses fixed aeration devices (such as disc aerators or pipe aerators), and the aeration hole position is fixed and the distribution density is insufficient, which leads to a significant gradient difference in the dissolved oxygen concentration in the tank. Specifically, the area close to the air outlet of the aerator forms a local super-oxygen environment due to oxygen enrichment, while the distal area is in an anoxic state due to limited oxygen transfer. This uneven distribution of dissolved oxygen directly leads to differences in the activity of nitrifying bacteria in space, and the nitrification reaction is incomplete in some areas due to insufficient dissolved oxygen, while the high-oxygen area may cause excessive aeration energy waste.

[0004] To improve the distribution of dissolved oxygen, some technical solutions introduce mechanical stirring devices to try to promote the uniformization of oxygen mass transfer through fluid disturbance. However, high-speed stirring will increase the shear force at the gas-liquid interface, promoting the formation of a stable foam layer of surface active substances (such as proteins and lipids) in the sewage, while destroying the activated sludge floc structure and generating a large amount of suspended micro-particles (floating sludge). These foams and floating sludge form a dense cover layer on the liquid surface, and their oxygen barrier effect significantly reduces the atmospheric reoxygenation efficiency, which further exacerbates the overall dissolved oxygen deficiency of the system. In addition, the microorganisms carried by the foam are prone to be compacted on the top of the equipment, increasing the maintenance frequency and the risk of secondary pollution. SUMMARY

[0005] The present application provides a sewage rapid denitrification integrated equipment, which can change the position of the air outlet of the aerator by intermittent air supply, making the dissolved oxygen in the sewage more uniform, and the overall activity of the nitrifying bacteria in the activated sludge higher, and reducing the foam layer and floating sludge caused by excessive disturbance of the sewage while changing the air outlet position.

[0006] In order to solve the above technical problems, the present application is solved by the following technical scheme: a sewage rapid denitrification integrated device, comprising a rotating shaft arranged vertically, the rotating shaft comprising an aeration section with an aeration channel inside, the aeration channel being connected with a plurality of first aeration pipes, the first aeration pipes being provided with first one-way air outlets arranged in the vertical direction, the aeration section being provided with a first air inlet sleeve arranged in a rotating sealing manner on the outer wall, the aeration section side wall on the inner side of the first air inlet sleeve being provided with a first air inlet hole, the first air inlet sleeve being connected with a gas conveying pipe, the aeration section between the plurality of first aeration pipes and the first air inlet sleeve being provided with a second aeration pipe extending in the radial direction, the second aeration pipe being provided with second one-way air outlets arranged in the lateral direction, an impeller being arranged in rotation in the aeration channel between the first air inlet hole and the first aeration pipe, the impeller being connected with a rotating cylinder arranged in a rotating sealing manner with the inner wall of the aeration section, the rotating cylinder side wall being provided with a first through hole, the first through hole being intermittently aligned with the second aeration pipe with the rotation of the rotating cylinder. When the sewage rapid denitrification integrated device is used, the air pump supplies air to the gas conveying pipe, the air in the gas conveying pipe enters the aeration section through the first air inlet hole in the first air inlet sleeve, and is then discharged from the first one-way air outlets on the first aeration pipes to perform the basic aeration operation. At the same time, the impeller is driven to rotate during the aeration process, the rotating cylinder is driven to rotate by the impeller, and when the first through hole on the rotating cylinder is aligned with the second aeration pipe, the second one-way air outlets on the second aeration pipe discharge air in the lateral direction, so that the rotating shaft is rotated, thereby slowly driving the rotating shaft to rotate, slowly changing the position of the first aeration pipe, changing the position of the aeration outlet of the aerator by intermittently supplying air, making the dissolved oxygen in the sewage more uniformly distributed, making the overall activity of the nitrifying bacteria in the activated sludge higher, and reducing the foam layer and floating sludge caused by excessive disturbance of the sewage while changing the position of the air outlet.

[0007] In the above technical scheme, preferably, the rotating shaft is provided with a defoaming mechanism. The defoaming mechanism can be arranged on the rotating shaft to perform defoaming operation at the same time as aeration, and can be driven to rotate by the rotation of the rotating shaft to defoam in a larger range and improve the defoaming efficiency.

[0008] In the technical scheme, preferably, the defoaming mechanism is connected to a lifting seat sleeved on the rotating shaft, a plurality of protrusions are vertically arranged on the outer wall of the rotating shaft, a plurality of limiting grooves matched with the protrusions are vertically arranged on the inner wall of the lifting seat, and the lifting seat is lowered to sleeve the limiting grooves into the limiting protrusions; a float having a water storage cavity in the interior is arranged at the bottom of the lifting seat, the bottom of the float is movably and sealingly connected with the rotating shaft, a water storage section is arranged on the rotating shaft, a first water inlet is arranged on the side wall of the water storage section and located in the water storage cavity, water is stored in the water storage section, a piston is slidingly arranged in the water storage section, a second air inlet sleeve is rotatably and sealingly arranged on the outer wall of the water storage section below the piston, a second air inlet is arranged on the side wall of the water storage section in the second air inlet sleeve, the second air inlet sleeve is connected with the gas conveying pipe through the first air valve, a one-way air outlet controlled by a second air valve is arranged on the connecting pipe between the second air inlet sleeve and the first air valve, when the second air inlet is in the air inlet state, the water stored in the water storage section is pushed into the float by the piston to lower the lifting seat, when the second air inlet is in the air outlet state, the water in the float flows back to the water storage section through the first water inlet, and the lifting seat is raised. Since the floating scum may not be generated on the surface of the sewage during the aeration, the defoaming mechanism only works in the state of the floating scum, and the defoaming mechanism is kept in a dry state above the sewage in the case that the defoaming mechanism does not work, so that the immersion corrosion of the sewage can be avoided and the service life is maintained for a longer time. The structure can control the lifting of the lifting seat and the rotation of the defoaming mechanism through the first air valve. When the defoaming mechanism needs to be operated, the first air valve is opened, the piston is pushed upward due to the positive pressure below the piston, the water stored in the water storage section is pushed into the float, the weight in the float is increased to lower the lifting seat, and the defoaming mechanism is immersed in the water; when the defoaming mechanism needs to be closed, the first air valve is closed and the second air valve is opened to exhaust air, the piston is pressed downward due to the water stored above the piston, the piston is lowered to the initial position, the water in the float flows back to the water storage section, the lifting seat is raised to take the defoaming mechanism away from the water surface, the limiting grooves are sleeved into the limiting protrusions after the lifting seat is lowered, the lifting seat can be rotated by the rotating shaft, the defoaming efficiency is improved, the limiting grooves are separated from the limiting protrusions after the lifting seat is raised, and the lifting seat is no longer rotated.

[0009] In the technical scheme, preferably, the top of the limiting protrusion has a guide tapered portion. The structure makes the limiting groove more smoothly sleeve into the limiting protrusion.

[0010] In the technical scheme, preferably, the side wall of the water storage section is provided with a second water communication hole communicated with the sewage, and the bottom of the piston is connected with a blocking sleeve, when the piston rises, the blocking sleeve blocks the second water communication hole. With the structure, the water storage section can be communicated with the sewage when the piston descends, and the water in the water storage section can be automatically supplemented, so that there is water in the water storage section when the piston rises, and the descending operation of the lifting seat cannot be completed due to evaporation of the water in the water storage section.

[0011] In the technical scheme, preferably, the bottom of the float is provided with a float body. Due to the different weight and volume of the defoaming mechanism, the size of the float body can be adjusted to adapt to different defoaming mechanisms, so that the defoaming mechanism can float above the sewage surface and be immersed in the sewage after the piston rises.

[0012] In the technical scheme, preferably, the defoaming mechanism is connected to the lifting seat arranged on the rotating shaft, the defoaming mechanism comprises a support frame, a roller provided with a foam suction hole and rotatably arranged on the support frame, a driving mechanism for driving the roller to rotate, and a scraping assembly located at the top of the roller, the support frame is connected to the outer wall of the lifting seat, the lifting seat is provided with a collection bin, a sealing cover is rotatably connected to the collection bin, a discharge pipe is inserted and connected in the sealing cover, a negative pressure pump is connected to the discharge pipe, and a foam suction pipe is arranged between the collection bin and the inside of the roller and the scraping assembly. When the defoaming mechanism is used, the negative pressure pump and the driving mechanism are started, the roller is driven to rotate by the driving mechanism, part of the foam is sucked into the roller, enters the collection bin through the foam suction pipe, and is sucked out through the discharge pipe, part of the foam adheres to the surface of the roller and is lifted by the rotation of the roller, and the foam is scraped by the scraping assembly and enters the collection bin through the foam suction pipe and is sucked out through the discharge pipe.

[0013] In the technical scheme, preferably, the scraping assembly comprises a collection plate connected to the support frame and an air flow box connected to the collection plate and provided with an air suction hole, the collection plate is provided with a collection chamber, one side of the collection chamber is in contact with the outer side wall of the roller, and a gap is left between the other side of the collection chamber and the outer side wall of the roller, and the suction inlet of the foam suction pipe is located in the air flow box. With the structure, the scraped foam is gathered in the collection chamber, and the foam suction effect is better.

[0014] In the technical scheme, preferably, the inside of the roller is provided with a flow blocking piece fixedly connected with the lifting seat, the outer wall of the flow blocking piece is in contact with the inner wall of the roller, and the flow blocking piece is a cylindrical piece provided with an axial opening on the side. With the structure, the suction force can be concentrated on one side, the foam is promoted to gather on the side, and the efficiency of sucking the foam is higher.

[0015] In the technical scheme, preferably, the driving mechanism comprises a motor fixed on the support frame, a first belt pulley connected to an output shaft of the motor, and a second belt pulley arranged on the roller, and the first belt pulley and the second belt pulley are driven by a belt.

[0016] Compared with the prior art, the sewage rapid denitrification integrated equipment has the following beneficial effects: when the sewage rapid denitrification integrated equipment is used, air is supplied to the air supply pipe through the air pump, the air in the air supply pipe enters the aeration section through the first air inlet hole in the first air inlet sleeve, and then is discharged from the first one-way air outlet nozzle on the first aeration pipe to perform basic aeration operation; at the same time, the impeller is driven to rotate in the aeration process, the rotating cylinder is driven to rotate by the impeller, when the first aeration pipe is aligned with the second aeration pipe on the rotating cylinder, the second one-way air outlet nozzle on the second aeration pipe discharges air laterally, the rotating shaft is rotated, the rotating shaft is slowly driven to rotate, the position of the first aeration pipe is slowly changed, the position of the aerator is changed intermittently by air supply, the dissolved oxygen in the sewage is more uniformly distributed, the overall activity of the nitrifying bacteria in the activated sludge is higher, and the foam layer and the floating sludge caused by excessive disturbance of the sewage are reduced while the position of the air outlet is changed. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an overall structure schematic diagram of the embodiment of the present application in a non-air supply state.

[0018] Figure 2 It is an overall sectional structure schematic diagram of the embodiment of the present application.

[0019] Figure 3 It is a partial enlarged view of A in FIG. Figure 2

[0020] Figure 4 It is a partial enlarged view of B in FIG. Figure 2

[0021] Figure 5 It is a partial enlarged view of C in FIG. Figure 2

[0022] Figure 6 It is a partial enlarged view of D in FIG. Figure 2

[0023] Figure 7 It is an overall structure schematic diagram of the embodiment of the present application in an air supply state.

[0024] Figure 8 It is a structure schematic diagram of the defoaming mechanism in the embodiment of the present application.

[0025] Figure 9 It is an installation structure schematic diagram of the roller in the embodiment of the present application.

[0026] ​​​​Figure 10 A cross-sectional structure diagram of a roller in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments: refer to Figures 1 to 10 A kind of sewage rapid denitrification integrated equipment, including vertically arranged rotating shaft 1, the bottom of rotating shaft 1 is rotationally arranged on the base in sewage pool, top is rotationally arranged on the support portion in sewage, rotating shaft 1 includes the aeration section with aeration channel 2 in the inside, aeration channel 2 is connected with the first aeration pipe 3 of several radial extensions, first aeration pipe 3 is provided with the first one-way air outlet nozzle 4 of vertical direction air outlet, first air inlet sleeve 5 is rotationally sealed and arranged on the outer wall of aeration section, first air inlet sleeve 5 inside aeration section side wall is provided with first air inlet hole 6, first air inlet sleeve 5 is connected with gas delivery pipe 7, the aeration section between several first aeration pipe 3 and first air inlet sleeve 5 is provided with the second aeration pipe 8 of radial extension, second aeration pipe 8 is provided with the second one-way air outlet nozzle 9 of side air outlet, impeller 10 is rotationally arranged in aeration channel 2 between first air inlet hole 6 and first aeration pipe 3, impeller 10 is connected with the rotation cylinder 11 of rotationally sealed cooperation with aeration section inner wall, rotation cylinder 11 side wall is provided with first through hole 12, first through hole 12 can be intermittently aligned with second aeration pipe 8 with the rotation of rotation cylinder 11.This kind of sewage rapid denitrification integrated equipment when in use, air is supplied to gas delivery pipe 7 by air pump, the air in gas delivery pipe 7 enters aeration section through first air inlet hole 6 in first air inlet sleeve 5, then is discharged from the first one-way air outlet nozzle 4 on first aeration pipe 3, and the basic aeration operation is carried out, at the same time, impeller 10 is driven to rotate in the aeration process, impeller 10 drives rotation cylinder 11 to rotate, when first same on rotation cylinder 11 is aligned with second aeration pipe 8, the second one-way air outlet nozzle 9 of side air outlet on second aeration pipe 8 is out of gas, so that rotating shaft occurs rotation, so as to slowly drive rotating shaft 1 to rotate, so that the position of first aeration pipe 3 slowly changes, the position of aerator air outlet can be changed by air supply intermittence, so that the dissolved oxygen in sewage is more evenly distributed, so that the overall activity of nitrifying bacteria in activated sludge is higher, and the foam layer and floating sludge generated by excessive disturbance of sewage are reduced while the air outlet position is changed.

[0028] Wherein, first one-way air outlet nozzle 4 and second one-way air outlet nozzle 9 are all realized one-way air outlet by one-way valve.

[0029] In the embodiment, rotating shaft 1 is provided with defoaming mechanism 12.Rotation cylinder 11 is provided with defoaming mechanism 12 on rotating shaft 1, which can carry out defoaming operation at the same time of aeration, and can rely on the rotation of rotating shaft 1 to drive defoaming mechanism 12 to rotate, to defoam in a larger range and improve defoaming efficiency.Defoaming mechanism 12 can adopt any defoaming mechanism 12 in prior art, or defoaming mechanism 12 in the embodiment.

[0030] In the embodiment, the defoaming mechanism 12 is connected to the lifting seat 13 sleeved on the rotating shaft 1, a plurality of protrusions 14 are vertically arranged on the outer wall of the rotating shaft 1, a plurality of limiting grooves 15 matched with the protrusions 14 are vertically arranged on the inner wall of the lifting seat 13, and the lifting seat 13 is lowered to sleeve the limiting grooves 15 into the limiting protrusions 14; the bottom of the lifting seat 13 is provided with a float 17 with a water storage cavity 16 inside, the bottom of the float 17 is movably and sealingly connected with the rotating shaft 1, the rotating shaft 1 is provided with a water storage section 18, the side wall of the water storage section 18 is provided with a first water inlet hole 19 located in the water storage cavity 16, water is stored in the water storage section 18, a piston 20 is slidingly arranged in the water storage section 18, the outer wall of the water storage section 18 below the piston 20 is rotatably and sealingly provided with a second air inlet sleeve 21, the side wall of the water storage section 18 on the inner side of the second air inlet sleeve 21 is provided with a second air inlet hole 22, the second air inlet sleeve 21 is connected with the gas conveying pipe 7 through the first air valve 23, a one-way exhaust port 25 controlled by the second air valve 24 is arranged on the connecting pipe between the second air inlet sleeve 21 and the first air valve 23, when the second air inlet hole 22 inhales air, the water stored in the water storage section 18 is squeezed into the float 17 by the piston 20 to make the lifting seat 13 lower, when the second air inlet hole 22 exhausts, the water in the float 17 flows back to the water storage section 18 through the first water inlet hole 19, and the lifting seat 13 rises. Because the surface of the sewage may not produce floating foam during aeration, the defoaming mechanism 12 only works in the state of floating foam, and the defoaming mechanism 12 is kept dry above the sewage in the case that the defoaming mechanism 12 does not work, which can avoid the immersion corrosion of the sewage and maintain a longer service life. The structure can control the lifting of the lifting seat 13 and whether the defoaming mechanism 12 is driven to rotate through the first air valve 23, when the defoaming mechanism 12 needs to operate, the first air valve 23 is opened, the pressure below the piston 20 is positive, the piston 20 is pushed to move upward, the water stored in the water storage section 18 is squeezed into the float 17 by the piston 20, the weight in the float 17 increases to make the lifting seat 13 lower, so that the defoaming mechanism 12 is immersed in the water; when the defoaming mechanism 12 needs to be closed, the first air valve 23 is closed and the second air valve 24 is opened to exhaust, the water stored above the piston 20 presses the piston 20 downward, the piston 20 moves downward to return to the initial position, the water in the float 17 flows back to the water storage section 18, and the lifting seat 13 rises to take the defoaming mechanism 12 away from the water surface, after the lifting seat 13 lowers, the limiting grooves 15 sleeve into the limiting protrusions 14, so that the lifting seat 13 can be driven to rotate by the rotating shaft 1, which improves the defoaming efficiency, and after the lifting seat 13 rises, the limiting grooves 15 are separated from the limiting protrusions 14, and the lifting seat 13 no longer rotates.

[0031] In the embodiment, the top of each limiting protrusion 14 has a guide tapered portion 26. The structure makes the limiting grooves 15 sleeve into the limiting protrusions 14 more smoothly.

[0032] In the embodiment, the sidewall of the water storage section 18 is provided with a second water passage hole 27 communicated with the sewage, and the bottom of the piston 20 is connected with a blocking sleeve 28. When the piston 20 rises, the blocking sleeve 28 blocks the second water passage hole 27. By using the structure, the water storage section 18 can be communicated with the sewage when the piston 20 descends, and the water in the water storage section 18 can be automatically supplemented, so that there is water in the water storage section 18 when the piston 20 rises, and the descending operation of the lifting seat 13 cannot be completed due to evaporation of the water in the water storage section 18.

[0033] In the embodiment, the bottom of the float 17 is provided with a float body 29. Except for the weight and volume of the defoaming mechanism 12, by adjusting the size of the float body 29, the defoaming mechanism 12 can be conveniently adapted to different defoaming mechanisms 12, so that the defoaming mechanism 12 can float above the sewage surface and be immersed in the sewage after the piston 20 rises.

[0034] In the embodiment, the defoaming mechanism 12 is connected to the lifting seat 13 sleeved on the rotating shaft 1, and the defoaming mechanism 12 includes a support frame 30, a roller 32 rotatably arranged on the support frame 30 and having a foam suction hole 31, a driving mechanism 33 for driving the roller 32 to rotate, and a scraping assembly 34 located at the top of the roller 32. The support frame 30 is connected to the outer wall of the lifting seat 13, the lifting seat 13 is provided with a collection bin 35, the collection bin 35 is rotatably connected with a sealing cover 36, the sealing cover 36 is inserted with a discharge pipe 37 connected with a negative pressure pump, and the collection bin 35 is provided with a foam suction pipeline 38 between the inside of the roller 32 and the scraping assembly 34. When the defoaming mechanism 12 is used, the negative pressure pump and the driving mechanism 33 are started, the roller 32 is rotated by the driving mechanism 33, part of the foam is sucked into the roller 32, enters the collection bin 35 through the foam suction pipeline 38, and is sucked out through the discharge pipe 37. Part of the foam adheres to the surface of the roller 32 and is lifted by the rotation of the roller 32, and is scraped by the scraping assembly 34. The scraped foam also enters the collection bin 35 through the foam suction pipeline 38 and is sucked out through the discharge pipe 37.

[0035] In the embodiment, the scraping assembly 34 includes a collection plate 40 connected to the support frame 30 and an air flow box 41 connected to the collection plate 40 and provided with an air suction hole 39, the collection plate 40 is provided with a collection chamber 42, one side of the collection chamber 42 is in contact with the outer sidewall of the roller 32, and the other side of the collection chamber 42 leaves a gap with the outer sidewall of the roller 32, and the suction inlet of the foam suction pipeline 38 is located in the air flow box 41. By using the structure, the scraped foam is gathered in the collection chamber 42, and the foam suction effect is better.

[0036] In the embodiment, the drum 32 is provided with a flow blocking member 43 fixedly connected with the lifting seat 13, the outer wall of the flow blocking member 43 is in contact with the inner wall of the drum 32, and the flow blocking member 43 is a cylindrical member with an axial opening 44 on the side surface. The structure makes the suction force gather on one side, promotes the foam to gather on the side, and makes the efficiency of sucking the foam higher.

[0037] In the embodiment, the driving mechanism 33 includes a motor 45 fixed on the support frame 30, a first pulley 46 connected with the output shaft of the motor 45, and a second pulley 47 arranged on the drum 32, and the first pulley 46 and the second pulley 47 are driven by a belt.

[0038] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can also be made, which should be considered as the protection scope of the present application.

Claims

1. An integrated rapid nitrogen removal equipment for wastewater, characterized in that: The system includes a vertically arranged rotating shaft (1), which includes an aeration section with an internal aeration channel (2). The aeration channel (2) is connected to a plurality of first aeration pipes (3). Each first aeration pipe (3) is provided with a first one-way air outlet (4) that discharges air vertically. The outer wall of the aeration section is rotatably sealed with a first air inlet sleeve (5). The side wall of the aeration section inside the first air inlet sleeve (5) is provided with a first air inlet hole (6). The first air inlet sleeve (5) is connected to an air supply pipe (7). A radially extending second aeration pipe (8) is provided on the aeration section between the plurality of first aeration pipes (3) and the first air inlet sleeve (5). The second aeration pipe (8) is provided with a second one-way air outlet that discharges air laterally. An air outlet (9) is provided with an impeller (10) rotatably disposed in the aeration channel (2) between the first air inlet (6) and the first aeration pipe (3). The impeller (10) is connected to a rotating cylinder (11) that rotates and seals with the inner wall of the aeration section. The side wall of the rotating cylinder (11) is provided with a first through hole, which can be intermittently aligned with the second aeration pipe (8) as the rotating cylinder (11) rotates. A defoaming mechanism (12) is provided on the rotating shaft (1). The defoaming mechanism (12) is connected to a lifting seat (13) sleeved on the rotating shaft (1). Several protrusions (14) are vertically arranged around the outer wall of the rotating shaft (1). Several protrusions (14) are vertically arranged around the inner wall of the lifting seat (13) and are aligned with the outer wall of the rotating shaft (1). The lifting seat (13) descends to fit the limiting groove (15) into the protruding strip (14); the bottom of the lifting seat (13) is provided with a float (17) having a water storage cavity (16) inside, the bottom of the float (17) is movably and sealed to the rotating shaft (1), the rotating shaft (1) is provided with a water storage section (18), the side wall of the water storage section (18) is provided with a first water passage hole (19) located in the water storage cavity (16), the water storage section (18) is filled with water, a piston (20) is slidably provided in the water storage section (18), and a second air inlet sleeve (21) is rotatably and sealed on the outer wall of the water storage section (18) below the piston (20). A second air inlet (22) is provided on the side wall of the water storage section (18) inside the second air inlet sleeve (21). The second air inlet sleeve (21) is connected to the air supply pipe (7) via the first air valve (23). A one-way exhaust port (25) controlled by the second air valve (24) is provided on the connecting pipe between the second air inlet sleeve (21) and the first air valve (23). When the second air inlet (22) is inlet, the water stored in the water storage section (18) is squeezed into the float (17) by the piston (20) to make the lifting seat (13) descend. When the second air inlet (22) is inlet, the water in the float (17) flows back to the water storage section (18) through the first water passage (19), and the lifting seat (13) rises.

2. The integrated rapid denitrification equipment for wastewater as described in claim 1, characterized in that: Several of the protrusions (14) have a guide cone (26) at the top.

3. The integrated rapid denitrification equipment for wastewater as described in claim 1, characterized in that: The side wall of the water storage section (18) is provided with a second water passage hole (27) that communicates with sewage. The bottom of the piston (20) is connected to a sealing sleeve (28). When the piston (20) rises, the sealing sleeve (28) blocks the second water passage hole (27).

4. The integrated wastewater rapid denitrification equipment as described in claim 1, characterized in that: The bottom of the pontoon (17) is provided with a float (29).

5. The integrated rapid denitrification equipment for wastewater as described in claim 1, characterized in that: The defoaming mechanism (12) is connected to the lifting seat (13) sleeved on the rotating shaft (1). The defoaming mechanism (12) includes a support frame (30), a roller (32) with a suction hole (31) rotatably mounted on the support frame (30), a drive mechanism (33) for driving the roller (32) to rotate, and a scraping assembly (34) located on the top of the roller (32). The support frame (30) is connected to the outer wall of the lifting seat (13). A collection chamber (35) is provided on the lifting seat (13). A sealing cover (36) is rotatably connected to the collection chamber (35). A discharge pipe (37) is inserted and connected inside the sealing cover (36). A negative pressure pump is connected to the discharge pipe (37). Suction pipes (38) are provided between the collection chamber (35), the inside of the roller (32), and the scraping assembly (34).

6. The integrated rapid denitrification equipment for wastewater as described in claim 5, characterized in that: The scraping assembly (34) includes a collecting plate (40) connected to a support frame (30) and an airflow box (41) connected to the collecting plate (40) and having an air intake hole (39). A collecting chamber (42) is provided inside the collecting plate (40). One side of the collecting chamber (42) is in contact with the outer wall of the roller (32), and a gap is left between the other side of the collecting chamber (42) and the outer wall of the roller (32). The suction port of the foam suction pipe (38) is located inside the airflow box (41).

7. The integrated rapid denitrification equipment for wastewater as described in claim 5, characterized in that: The roller (32) is provided with a flow-blocking component (43) that is fixedly connected to the lifting seat (13). The outer wall of the flow-blocking component (43) is in contact with the inner wall of the roller (32). The flow-blocking component (43) is a cylindrical component with an axial opening (44) on its side.

8. The integrated rapid nitrogen removal equipment for wastewater as described in claim 5, characterized in that: The drive mechanism (33) includes a motor (45) fixed on the support frame (30), a first pulley (46) connected to the output shaft of the motor (45), and a second pulley (47) on the roller (32). The first pulley (46) and the second pulley (47) are driven by a belt.

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