Aeration precipitation integrated device and aeration precipitation method applied to high ammonia-nitrogen wastewater

Abstract

The application discloses an aeration precipitation integrated device and method applied to high-ammonia-nitrogen wastewater, relates to the technical field of wastewater treatment, and comprises an integrated reactor, wherein the integrated reactor comprises a tank body, a composite movable aeration mechanism and a pressing assembly are arranged in the tank body, the composite movable aeration mechanism comprises a middle circular plate rotatably connected to the inner bottom of the tank body, a sliding block vertically slidably connected to the middle circular plate and protruding upward, a middle cylinder fixed to the upper end of the sliding block, a horizontal pipe fixed to the side wall of the middle cylinder and in communication, a prism coaxially fixed to the upper part of the middle cylinder, a shaft rod fixed to the upper end of the prism and an aeration head mounted on the horizontal pipe, the pressing assembly comprises a fixed pressing block and a pressing rod fixed to the end of the horizontal pipe away from the middle cylinder, the pressing block is multiple and uniformly arranged around the inner wall of the tank body, one lateral end of the pressing block forms a downward arc surface, and the rotating path of the pressing rod intersects with the pressing block and the arc surface is located in front of the rotating direction of the pressing rod. The application has the effect of reducing the aeration blockage probability of the integrated wastewater treatment device.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to an integrated aeration and sedimentation device and aeration and sedimentation method for high ammonia nitrogen wastewater. Background Technology

[0002] Large amounts of wastewater with high concentrations of ammonia nitrogen are generated during chemical production processes. If this wastewater is directly discharged into rivers and other water bodies, it will lead to eutrophication, deteriorate the water quality, and damage the environment. Therefore, wastewater treatment is necessary.

[0003] Currently, high ammonia nitrogen wastewater can be treated using aerobic granular sludge technology: the pretreated wastewater is sent into an integrated aeration and sedimentation reactor (tank), which contains aerobic sludge particles. After water exchange, an anaerobic reaction is carried out for a period of time for organic absorption, followed by aeration to fully mix the sludge particles and wastewater for organic matter removal, ammonia nitrogen removal, etc., forming large granular sludge. Then, the activated sludge is separated into sludge and water during the sedimentation stage, completing the wastewater treatment.

[0004] The above treatment process can purify wastewater, but it has the following shortcomings: Since the aeration and sedimentation process is integrated, with the aeration device and sludge at the bottom, the aeration heads may become clogged with repeated use and over time. Summary of the Invention

[0005] To reduce the likelihood of aeration blockage in integrated wastewater treatment devices, this application provides an integrated aeration and sedimentation device and aeration and sedimentation method for high ammonia nitrogen wastewater.

[0006] In the first aspect, this application provides an integrated aeration and sedimentation device for high ammonia nitrogen wastewater, employing the following technical solution:

[0007] An integrated aeration and sedimentation device for high ammonia nitrogen wastewater includes an integrated reactor, wherein the integrated reactor includes a tank. The tank is characterized by having a composite movable aeration mechanism and a pressing assembly. The composite movable aeration mechanism includes a central circular plate rotatably connected to the bottom of the tank, a slider vertically slidingly connected to the central circular plate and extending upwards, a central cylinder fixed to the upper end of the slider, a horizontal pipe fixed to and connected to the side wall of the central cylinder, a prism coaxially fixed to the upper part of the central cylinder, a shaft fixed to the upper end of the prism, and an aeration head mounted on the horizontal pipe.

[0008] The horizontal tubes are multiple and connected to aeration heads. An air supply assembly and a drive assembly for driving the shaft to rotate are provided on the upper part of the tank. The pressing assembly includes a fixed pressure block and a pressure rod fixed to one end of the horizontal tube away from the middle cylinder. The pressure blocks are multiple and evenly arranged around the inner wall of the tank. One lateral end of the pressure block forms a downward arc surface. The rotation path of the pressure rod intersects with the pressure block and the arc surface is located in front of the rotation direction of the pressure rod.

[0009] Optionally, the upper part of the tank is provided with an overflow port, and a water inlet pipe is connected to the area near the horizontal pipe. A flow meter is installed on the water inlet pipe. The air supply component is electrically connected to the control module. The control module is also electrically connected to the drive component, the flow meter, and the valve / pump corresponding to the water inlet pipe. The control module is configured as follows:

[0010] If water enters through the inlet pipe, the aeration pump is kept off, and the motor is controlled to rotate. The motor speed v is controlled in the following ways:

[0011] The inflow rate L is analyzed based on the feedback from the flow meter;

[0012] Calculate the new wastewater height h based on the inflow rate L and the preset tank size parameters;

[0013] The motor speed v is controlled based on the height h of the new wastewater, and h and v are positively correlated.

[0014] Optionally, a rotating assembly and a dragging assembly are installed on the horizontal tube. The aeration head is rotatably connected to the horizontal tube through the rotating assembly. The rotating assembly includes a rotating tube, which is rotatably connected to the horizontal tube with one end inserted downward into the horizontal tube and the other end connected upward to the aeration head.

[0015] The dragging assembly includes teeth, a rack, wedges, a housing, a push plate, and a second spring. The housing is fixed to the side wall of the middle cylinder or the horizontal tube. The second spring is located in the housing and parallel to the horizontal tube. The push plate is located in the housing and abuts against the end of the second spring away from the middle cylinder. One end of the rack is inserted into the housing and fixed to the push plate. There are multiple teeth that are fixed around the end of the rotating tube outside the horizontal tube, and the rack meshes with the teeth. There are multiple wedges, with one wedge between every two pressure blocks. The end of the rack away from the middle cylinder is close to the inner wall of the tank and the rotation path intersects with the wedge. The inclined surface of the wedge is located in front of the direction of movement of the rack.

[0016] Optionally, the rotating assembly further includes a torsion spring, a stop block, and a vertical rod. The torsion spring is sleeved on a section of the rotating tube inserted into the horizontal tube. One torsion arm of the torsion spring is fixed to the rotating tube, and the other torsion arm is fixed to the horizontal tube. The stop block is fixed to a section of the side wall inside the rotating tube inserted into the horizontal tube, and the vertical rod is fixed to the horizontal tube and located on the rotation path of the stop block.

[0017] The vertical rods are two in number and are located in the opposite directions of the rotation of the stop block. The rack has an incomplete tooth structure and the missing tooth section of the rack is located in front of the teeth of the rotating tube after it moves to the bottom in the axial direction.

[0018] Optionally, a baffle is provided below the horizontal tube, the baffle contacts the bottom and inner wall of the tank, and a sliding plate is fixed to the bottom of the horizontal tube, the sliding plate is slidably connected to the baffle and the sliding connection direction is vertical.

[0019] Optionally, a retaining ring is provided around the bottom edge of the middle cylinder, and the retaining ring is inserted into the middle circular plate and is in a sliding connection.

[0020] Optionally, a telescopic sleeve is fitted over the outside of the shaft. The telescopic sleeve is a flexible sleeve, an elastic sleeve, or a bellows structure. The upper end of the telescopic sleeve is along the outer wall of the fixed shaft, and the lower end is fixed to the middle cylinder.

[0021] A rubber sleeve is fitted over the section of the rotating tube that extends outside the horizontal tube. One end of the rubber sleeve is fixed along the rotating tube, and the other end is fixed to the horizontal tube.

[0022] A limiting ring is fixed on the horizontal tube, and the rack passes through the limiting ring.

[0023] Optionally, the air supply assembly includes an aeration pump and a conduit connected to the air outlet port of the aeration pump, with the other end of the conduit inserted into the upper port of the shaft and rotatably connected; the drive assembly includes a motor and a gear transmission mechanism, with a bracket mounted on the upper part of the tank, the motor fixed to the bracket and driving the shaft through the gear transmission mechanism.

[0024] Secondly, this application provides an aeration sedimentation method, which adopts the following technical solution:

[0025] An aeration sedimentation method, comprising treating wastewater using an integrated aeration sedimentation device for high ammonia nitrogen wastewater as described in one of the above-mentioned items.

[0026] Optionally, the integrated reactor can be a group of multiple reactors, and the control module is configured as follows:

[0027] Define T as the time between the first water inlet and the next water inlet after sedimentation in an integrated reactor.

[0028] Establish the formula t=T / n, where n is the number of integrated reactors in the same group;

[0029] The influent duration of any group of integrated reactors is controlled to be t, and the process is carried out sequentially according to the preset sequence number of the integrated reactors.

[0030] In summary, this application includes the following beneficial technical effects:

[0031] 1. It can make the aeration head vibrate up and down during use, which works in conjunction with the swinging motion of the aeration head to disperse and clean impurities on the aeration head, prevent the aeration head from clogging, and ensure the smooth progress of the treatment process;

[0032] 2. The baffle at the bottom of the horizontal tube pushes the sediment away, preventing it from being located below the tube. This ensures that the horizontal tube will not be squeezed by the accumulated sediment as it descends, guaranteeing its normal descent and allowing it to vibrate normally. Attached Figure Description

[0033] Figure 1 This is a three-dimensional schematic diagram of this application;

[0034] Figure 2 This is a partial longitudinal section structural diagram of this application;

[0035] Figure 3 This is a partial cross-sectional structural diagram of this application;

[0036] Figure 4 Figure 3 Enlarged schematic diagram of part C in the diagram;

[0037] Figure 5 This is a partial structural diagram of the tank body in this application;

[0038] Figure 6 yes Figure 2 Enlarged diagram of part A in the diagram;

[0039] Figure 7 yes Figure 3 Enlarged schematic diagram of part B in the diagram;

[0040] Figure 8 This is a schematic diagram of the control structure of the control module.

[0041] Explanation of reference numerals in the attached drawings: 1. Integrated reactor; 2. Outlet; 3. Inlet pipe; 4. Central circular plate; 5. Sliding block; 6. First spring; 7. Central cylinder; 8. Horizontal pipe; 9. Aeration head; 10. Shaft; 11. Prism; 12. Telescopic sleeve; 13. Pressure rod; 14. Pressure block; 15. Arc surface; 16. Rotary pipe; 17. Torsion spring; 18. Stop block; 19. Vertical rod; 20. Rubber sleeve; 21. Tooth; 22. Rack; 23. Wedge block; 24. Shell; 25. Push plate; 26. Second spring; 27. Limiting ring; 28. Motor; 29. ​​Gear; 30. Aeration pump; 31. Guide tube; 32. Baffle; 33. Slide plate; 34. Buffer ring; 35. Flow meter. Detailed Implementation

[0042] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0043] This application discloses an integrated aeration and sedimentation device for high ammonia nitrogen wastewater.

[0044] Reference Figure 1 The integrated aeration and sedimentation device for high ammonia nitrogen wastewater includes an integrated reactor 1.

[0045] The integrated reactor 1 includes a support structure and a tank fixed on the support structure. The support structure can be a frame, a pillar structure, etc., and the tank can be barrel-shaped, box-shaped, etc. In this embodiment, a barrel-shaped tank is used as an example. The top is open and the side walls and bottom are connected to multiple pipes. At least one of them serves as a sludge discharge outlet 2 and a water inlet pipe 3 serves as a water inlet, so as to discharge treated water, send wastewater in, and discharge sludge, etc. This is the prior art and will not be described in detail.

[0046] A composite active aeration mechanism is installed at the bottom of the tank, and a drive component is installed on the top to drive it, so that the aeration section vibrates in multiple directions during the water treatment process, reducing the chance of dirt stagnation, accumulation, and scaling in the aeration section, and reducing the chance of aeration blockage.

[0047] Reference Figure 2 Regarding the composite active aeration mechanism, specifically:

[0048] A structural groove is formed in the middle of the bottom of the tank. A central circular plate 4 is installed in the structural groove. The central circular plate 4 has an open cavity at the top, which is T-shaped when viewed from the side and rectangular when viewed from above. A matching slider 5 is vertically slidably connected to the inner cavity of the central circular plate 4. The upper part of the slider 5 extends out of the structural groove and is fixed to a central cylinder 7. Horizontal pipes 8 are fixed to the side wall of the central cylinder 7 and are interconnected. There are multiple horizontal pipes 8, which are evenly distributed around the central cylinder 7. Aeration heads 9 are installed at equal intervals on the top of the horizontal pipes 8. It can be understood that the bottom of the aeration head 9 is connected to the horizontal pipe 8, and the top has an external air outlet. This is existing technology and will not be described in detail.

[0049] Reference Figure 2 A first spring 6 is fixed to the bottom of the slider 5. The first spring 6 is vertical and its lower end is fixed to the bottom of the middle circular plate 4. A prism 11 with a sliding connection is inserted into the top of the middle cylinder 7. A shaft 10 is fixed to the top of the prism 11. Both the shaft 10 and the prism 11 are hollow structures. A stirring blade is installed on the side wall of the shaft 10 and is linked to the top drive assembly, which is connected to the air supply assembly. The stirring blade is a detachable structure, for example, by threaded connection.

[0050] Reference Figure 3 and Figure 4 A pressing assembly is installed on the inner wall of the tank. The pressing assembly includes a pressing rod 13 and pressing blocks 14. The pressing rod 13 is fixed to the end of the horizontal tube 8 away from the middle cylinder 7, and this end of the horizontal tube 8 is closed. There are multiple pressing blocks 14, which are evenly distributed around the inner wall of the tank. One lateral end of the pressing block 14 forms a downward-facing arc surface 15. The rotation path of the pressing rod 13 intersects with the pressing block 14, and the arc surface 15 is located in front of the rotation direction of the pressing rod 13.

[0051] Operating Procedure: During the aeration stage, the air supply component delivers air to the shaft 10. The air passes through the prism 11, the middle cylinder 7, and the horizontal pipe 8 before being delivered from the aeration head 9 for aeration. The drive component rotates the shaft 10 in conjunction with the shaft. The rotation of the shaft 10 drives the middle cylinder 7 to rotate via the prism 11, which in turn drives the horizontal pipe 8 to rotate. After the horizontal pipe 8 rotates, the pressure rod 13 rotates along with it and is pressed down by the pressure block 14 during its movement, contacting the arc surface 15. When the pressure rod 13 is pressed down, the horizontal pipe 8 is also pressed down, compressing the first spring 6. When the pressure rod 13 disengages from the pressure block 14, the pressure rod 13 and the horizontal pipe 8 quickly jump upwards to reset, and the cycle of pressing down and jumping up occurs. As a result, the aeration head 9 vibrates, which disperses impurities and dirt on its surface. On the other hand, it rotates synchronously, throwing away the dirt on the surface, thereby reducing the probability of aeration blockage in the integrated wastewater treatment device.

[0052] Furthermore, considering that the aforementioned prism 11 and the middle cylinder 7 will slide, a telescopic sleeve 12 is fitted on the outside of the shaft 10. The telescopic sleeve 12 can be a flexible sleeve, an elastic sleeve, or a bellows structure. The upper end of the telescopic sleeve 12 is along the outer wall of the fixed shaft 10, and the lower end is fixed to the top of the middle cylinder 7.

[0053] Reference Figure 5 Furthermore, in order to prevent sludge and other sediments from remaining below the horizontal pipe 8 and the middle cylinder 7 and hindering their descent, a baffle 32 is installed below the horizontal pipe 8. The baffle 32 contacts the bottom and inner wall of the tank. A sliding plate 33 is fixed to the bottom of the horizontal pipe 8. The sliding plate 33 is slidably connected to the baffle 32, which allows the baffle 32 to rotate with the horizontal pipe 8 to push the sediment, and also to move up and down relative to the horizontal pipe 8 without hindering the up and down movement of the horizontal pipe 8.

[0054] A retaining ring 34 is fixed around the bottom edge of the middle cylinder 7. The retaining ring 34 is inserted into and slides within a pre-set movable groove on the top of the middle circular plate 4. The retaining ring 34 prevents sludge and other sediments from entering the lower part of the middle cylinder 7.

[0055] Reference Figure 6 and Figure 7 In another embodiment of this application, a rotating assembly is installed on the horizontal pipe 8, and the aeration head 9 is rotatably connected to the horizontal pipe 8 through the rotating assembly. The rotating assembly includes a rotating pipe 16, a torsion spring 17, a stop block 18, and a vertical rod 19.

[0056] The rotating tube 16 is rotatably connected to the horizontal tube 8, with its lower end inserted into the horizontal tube 8 and its upper end threadedly connected to the aeration head 9. A torsion spring 17 is fitted inside the horizontal tube 8, with one arm of the torsion spring 17 fixed to the rotating tube 16 and the other arm fixed to the inner wall structure of the horizontal tube 8. A stop block 18 is fixed to the outer wall of the rotating tube 16 inside the horizontal tube 8. A vertical rod 19 is fixed in the horizontal tube 8 and located on the rotation path of the stop block 18.

[0057] It is understandable that the horizontal pipe 8 should be a straight seam welded pipe or a spliced ​​welded pipe to facilitate the installation of the internal structure; at the same time, a rubber sleeve 20 is placed over the rotating pipe 16, with one end of the rubber sleeve 20 along the fixed rotating pipe 16 and the other end fixed to the outer wall of the horizontal pipe 8, in order to reduce the occurrence of sludge and structural defects in the rotation gap.

[0058] A driving assembly for driving the aforementioned rotating component, namely the rotating tube 16, is also provided on the horizontal tube 8. The driving assembly includes a tooth 21, a rack 22, a wedge block 23, a housing 24, a push plate 25, and a second spring 26.

[0059] The housing 24 is fixed to the side wall of the middle cylinder 7 or the horizontal tube 8 and has an opening at the top. The opening screws fix a suitable sealing cover. The second spring 26 is located in the housing 24 and parallel to the horizontal tube 8. The push plate 25 is located in the housing 24 and abuts against the end of the second spring 26 away from the middle cylinder 7. One end of the rack 22 is inserted into the housing 24 and fixed to the push plate 25. The rack 22 has an incomplete tooth structure, that is, a toothless structure that does not require a meshing position. There are multiple teeth 21, which are evenly fixed around the end of the rotating tube 16 located outside the horizontal tube 8. The rack 22 meshes with the teeth 21. There are multiple wedge blocks 23, with one wedge block 23 between every two pressure blocks 14. The end of the rack 22 away from the middle cylinder 7 is close to the inner wall of the tank and the rotation path intersects with the wedge block 23. The inclined surface of the wedge block 23 is located in front of the moving direction of the rack 22.

[0060] In one embodiment, it should be noted that there are two vertical rods 19 corresponding to each of the aforementioned stop blocks 18, located in both positive and negative rotational directions. After the aforementioned rack 22 moves to the axial direction to its final position, the missing tooth section of the rack 22 is located in front of the teeth 21 of the rotating tube 16, i.e., it is disengaged.

[0061] According to the above configuration, the horizontal tube 8 moves with the rack 22. When the rack 22 moves between the two pressure blocks 14, it will abut against the inclined surface of the wedge block 23, causing the rack 22 to move with the push plate 25, which will compress the second spring 26 and deform it to generate force. As the rack 22 moves, its mating teeth 21 will rotate the rotating tube 16, and the rotating tube 16 will rotate and compress the torsion spring 17. When the rack 22 leaves the wedge block 23, the compressed second spring 26 will release its force to push the push plate 25 and the rack 22 to reset, which can allow the aeration head 9 to reverse and throw off surface dirt, etc.

[0062] That is, the aeration head 9 can swing in both directions; more importantly, due to the special toothed design mentioned above, the aeration head 9 actually first rotates in the forward direction, and then when the teeth are not engaged, the torsion spring 17 is released to make the aeration head 9 quickly rotate in the reverse direction, and will cause repeated shaking at the end due to the collision with the vertical rod 19; then, when the rack 22 is reset, it rotates in the reverse direction, and again when the teeth are not engaged, the torsion spring 17 is released to make the aeration head 9 quickly rotate in the reverse direction, and will cause repeated shaking at the end due to the collision with the vertical rod 19.

[0063] That is, this application can make the aeration head 9 move at a faster speed during the movement of the horizontal tube 8, and each rack 22 moves completely once, so that the aeration head 9 swings back and forth multiple times, which is more effective.

[0064] A limiting ring 27 is fixed to the outer wall of the horizontal tube 8. The limiting ring 27 is sleeved on the outside of the rack 22 to reinforce and guide it, preventing the rack 22 from easily breaking or bending.

[0065] In one embodiment of this application, a bracket is fixed on the top of the tank. The bracket is equipped with a drive assembly, which includes a motor 28 and a gear transmission mechanism. The motor 28 is fixed to the bracket, and the gear transmission mechanism includes at least two gears 29. One gear 29 is fixed to the output shaft of the motor, and the other gear is sleeved on the shaft 10.

[0066] When in use, after the motor 28 is started, it drives the shaft 10 to rotate through the gear transmission mechanism.

[0067] In one embodiment of this application, the air supply assembly includes an aeration pump 30 fixedly mounted on a bracket. The air outlet end of the aeration pump 30 is fixedly connected to a conduit 31, and the upper end of the shaft 10 is sleeved over the other end of the conduit 31 and the two are rotatably and sealingly connected.

[0068] When in use, start the aeration pump 30 to introduce air into the shaft 10 through the conduit 31 to achieve air injection.

[0069] Reference Figure 8 In one embodiment of this application, the application further includes a control module, which includes a PLC controller and a corresponding host computer. The PLC controller is electrically connected to the water inlet control unit on the motor 28, the aeration pump 30, and the water inlet pipe 3. The water inlet control unit can be an electric valve on the water pipe or a water pump.

[0070] The upper part of the tank has an overflow port for the treated water to flow out, while the inlet pipe 3 is at the lower part of the tank. The shaft 10 has no stirring blades and is in a bare state. The control module (such as a PLC controller) is configured such that if water enters the inlet pipe 3, that is, the valve and pump on the pipe are opened, the aeration pump 30 is kept closed and the motor 28 is rotated.

[0071] According to the above settings, the discharge and inflow of water after sedimentation can occur simultaneously. New wastewater enters from the bottom and treated water is discharged from the top. Therefore, the aeration head 9 does not need to stop for a period of time to drain the water and then resume operation. The stopping time of the aeration head 9 is relatively short, which can reduce the time that sludge and other substances remain on the surface, increase the difficulty of accumulating dirt and stagnating scale, and reduce the chance of aeration blockage.

[0072] Furthermore, a flow meter 35 is installed on the inlet pipe 3, and the flow meter 35 is electrically connected to the control module (i.e., the PLC controller). The motor 28 is electrically connected to the control module via a frequency converter. The control module is configured as follows:

[0073] If water enters through inlet pipe 3, the water inflow L is analyzed based on the feedback from flow meter 35; L = flow velocity * time.

[0074] Calculate the new wastewater height h based on the inflow rate L and the preset tank dimensions (inner bottom area s); h = L / s;

[0075] The speed v of motor 28 is controlled according to the height h of the new wastewater, and h and v are positively related, that is, the larger h is, the larger v is. The specific numerical correspondence can be determined by the sewage treatment plant based on on-site equipment verification. v should not cause severe disturbance to the wastewater above h.

[0076] Because the speed v of motor 28, or the speed of horizontal pipe 8, increases according to the increase of the height h of the new wastewater, it can reduce the chance that the horizontal pipe 8 may accidentally disturb the water body excessively when the height of the new wastewater below is insufficient, causing the upper layer of settled water to become turbid again, thus ensuring that there will be no excessive interference with drainage.

[0077] Since drainage and water intake occur after sedimentation, it is known that the lower part of the tank contains more and heavier sludge during this stage. Therefore, gradually increasing the speed of motor 28 instead of all at once can reduce the chance of motor 28 being damaged and also reduce the chance of deformation and damage to various structures on the horizontal pipe 8, thus extending the service life of the equipment.

[0078] This application also discloses an aeration sedimentation method.

[0079] The aeration and sedimentation method includes the use of the above-mentioned integrated aeration and sedimentation device for high ammonia nitrogen wastewater. The usage of this device has been described in the above embodiments, so it will not be repeated here.

[0080] In one embodiment, the method further includes: the integrated reactor 1 can be a group of multiple reactors, and the control module is configured as follows:

[0081] Define the time T between the first water inlet and the next water inlet after sedimentation in an integrated reactor 1.

[0082] Establish the formula t=T / n, where n is the number of integrated reactors 1 in the same group;

[0083] The water inlet duration of any one set of integrated reactors 1 is controlled to be t, and the process is carried out sequentially according to a preset sequence number.

[0084] According to the above settings, wastewater is continuously fed in, and the processes of water intake, anaerobic reaction, aeration, and sedimentation occur alternately in each integrated reactor 1, making wastewater treatment relatively efficient. Moreover, if any device fails, such as aeration blockage, simply adjusting n will quickly coordinate other devices to continue working, ensuring the stability of wastewater treatment.

[0085] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An integrated aeration sedimentation device for high ammonia-nitrogen wastewater, comprising an integrated reactor (1), wherein the integrated reactor (1) comprises a tank body, characterized in that: The tank body is provided with a composite movable aeration mechanism and a pressing assembly, the composite movable aeration mechanism comprises a middle circular plate (4) rotatably connected to the inner bottom of the tank body, a sliding block (5) vertically slidably connected to the middle circular plate (4) and protruding upward, a middle cylinder (7) fixed to the upper end of the sliding block (5), a horizontal pipe (8) fixed to the side wall of the middle cylinder (7) and communicating, a prism (11) coaxially fixed to the upper part of the middle cylinder (7), a shaft rod (10) fixed to the upper end of the prism (11), and an aeration head (9) mounted on the horizontal pipe (8); The horizontal pipe (8) is multiple and communicates the aeration heads (9), the upper part of the tank body is provided with a gas supply assembly communicating with the shaft rod (10) and a driving assembly for driving the shaft rod (10) to rotate, the pressing assembly comprises a fixed pressing block (14) and a pressing rod (13) fixed to the end of the horizontal pipe (8) away from the middle cylinder (7), the pressing block (14) is multiple and uniformly arranged around the inner wall of the tank body, one lateral end of the pressing block (14) forms a downward arc surface (15), the rotating path of the pressing rod (13) intersects the pressing block (14) and the arc surface (15) is located in front of the rotating direction of the pressing rod (13); The horizontal pipe (8) is mounted with a rotating assembly and a dragging assembly, the aeration head (9) is rotatably connected to the horizontal pipe (8) through the rotating assembly, and the rotating assembly comprises a rotating pipe (16) rotatably connected to the horizontal pipe (8) and inserted into the horizontal pipe (8) downward at one end and upward communicating with the aeration head (9) at the other end; The dragging assembly comprises a gear tooth (21), a gear rack (22), a wedge block (23), a housing (24), a push plate (25) and a second spring (26), the housing (24) is fixed to the side wall of the middle cylinder (7) or the horizontal pipe (8), the second spring (26) is located in the housing (24) and parallel to the horizontal pipe (8), the push plate (25) is located in the housing (24) and abuts against the end of the second spring (26) away from the middle cylinder (7), one end of the gear rack (22) is inserted into the housing (24) and fixed with the push plate (25); the gear tooth (21) is multiple and fixed around the end of the rotating pipe (16) located outside the horizontal pipe (8), the gear rack (22) engages with the gear tooth (21); the wedge block (23) is multiple and one wedge block (23) is arranged between every two pressing blocks (14), the end of the gear rack (22) away from the middle cylinder (7) is close to the inner wall of the tank body and the rotating path intersects the wedge block (23), and the inclined surface of the wedge block (23) is located in front of the moving direction of the gear rack (22); The rotating assembly further comprises a torsion spring (17), a stop block (18) and a vertical rod (19), the torsion spring (17) is sleeved on the section of the rotating pipe (16) inserted into the horizontal pipe (8), one torsion arm of the torsion spring (17) is fixed to the rotating pipe (16) and the other torsion arm is fixed to the horizontal pipe (8), the stop block (18) is fixed to the side wall of the section of the rotating pipe (16) inserted into the horizontal pipe (8), and the vertical rod (19) is fixed to the horizontal pipe (8) and located on the rotating path of the stop block (18). The vertical rods (19) are two and are located in the rotation direction of the front and back of the block (18), the rack (22) is an incomplete tooth structure and moves to the bottom, and the missing tooth section of the rack (22) is located in front of the gear teeth (21) of the rotating pipe (16).

2. The aeration sedimentation integrated device for high-ammonia-nitrogen wastewater according to claim 1, wherein: The upper part of the tank body is provided with an overflow port, and the area close to the horizontal pipe (8) is communicated with a water inlet pipe (3), a flow meter (35) is installed on the water inlet pipe (3), the gas supply assembly is electrically connected with the control module, the control module is also electrically connected with the drive assembly, the flow meter (35) and the valve / pump corresponding to the water inlet pipe (3), and the control module is configured to: If water is introduced into the water inlet pipe (3), the aeration pump (30) is controlled to remain in a closed state, the motor (28) is controlled to rotate, and the rotation speed v of the motor (28) is controlled in a mode comprising: According to the feedback of the flow meter (35), the water inlet amount L is analyzed; According to the water inlet amount L and the preset tank size parameters, the new wastewater height h is calculated; According to the new wastewater height h, the rotation speed v of the motor (28) is controlled, and h and v are in a positive relationship.

3. The aeration sedimentation integrated device for high ammonia-nitrogen wastewater of claim 1, wherein: The lower part of the horizontal pipe (8) is provided with a baffle (32) which contacts the inner bottom and the inner side wall of the tank body, and the bottom of the horizontal pipe (8) is fixedly provided with a sliding plate (33) which is slidingly connected to the baffle (32) and has a vertical sliding connection direction.

4. The aeration-sedimentation integrated device for high-ammonia-nitrogen wastewater of claim 1, wherein: The bottom of the middle cylinder (7) is provided with a blocking ring (34) around the edge, and the blocking ring (34) is inserted into the middle circular plate (4) and is in sliding connection.

5. The aeration sedimentation integrated device for high ammonia-nitrogen wastewater of claim 1, wherein: The outer part of the shaft rod (10) is sleeved with a telescopic sleeve (12), the telescopic sleeve (12) is a flexible sleeve, an elastic sleeve or a bellows structure, the upper end of the telescopic sleeve (12) is fixed along the outer wall of the shaft rod (10), and the lower end is fixed to the middle cylinder (7). A section of the rotating pipe (16) extending out of the horizontal pipe (8) is sleeved with a rubber sleeve (20), one end of the rubber sleeve (20) is fixed to the rotating pipe (16), and the other end is fixed to the horizontal pipe (8). The horizontal pipe (8) is fixedly provided with a limiting ring (27), and the rack (22) penetrates through the limiting ring (27).

6. The aeration-sedimentation integrated device for high-ammonia-nitrogen wastewater of claim 1, wherein: The gas supply assembly comprises an aeration pump (30) and a conduit (31) communicated with the gas outlet port of the aeration pump (30), one end of the conduit (31) is inserted into the upper port of the shaft rod (10) and is rotationally connected; the drive assembly comprises a motor (28) and a gear (29) transmission mechanism, a support is installed on the upper part of the tank body, the motor (28) is fixed to the support and drives the shaft rod (10) through the gear (29) transmission mechanism.

7. An aeroflocculation method, characterized by: The application of the above-mentioned application in any one of claims 2 or 5 is used in the aeration and sedimentation integrated device for treating wastewater with high ammonia nitrogen.

8. The method of claim 7, wherein: The integrated reactor (1) is multiple groups, and the control module is configured to: Define the time length T between once water inlet and the next water inlet after sedimentation of an integrated reactor (1); Establish the formula t=T / n, wherein n is the number of integrated reactors (1) in the same group; Control the water inlet duration t of any group of integrated reactors (1), and sequentially control according to the preset serial number of the integrated reactor (1).

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