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

Abstract

The invention discloses an aeration and precipitation integrated device applied to high-ammonia-nitrogen wastewater and an aeration and precipitation method, and relates to the technical field of wastewater treatment.The aeration and precipitation integrated device comprises an integrated reactor, the integrated reactor comprises a tank body, and 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 rotationally connected to the inner bottom of the tank body, a sliding block which is vertically and slidably connected with the middle circular plate and of which the upper part extends out, a middle cylinder fixed at the upper end of the sliding block, a transverse pipe which is fixed on the side wall of the middle cylinder and is communicated with the middle cylinder, a prism coaxially fixed at the upper part of the middle cylinder, a shaft rod fixed at the upper end of the prism and an aeration head mounted on the transverse pipe; the pressing assembly comprises a plurality of fixed pressing blocks and a pressing rod fixed to the end, away from the middle cylinder, of the transverse pipe, the pressing blocks are evenly arranged around the inner wall of the tank body, one transverse end of each pressing block forms a downward arc face, the rotating path of the pressing rod intersects with the pressing blocks, and the arc faces are located in front of the rotating direction of the pressing rods. The integrated wastewater treatment device has the effect of reducing the aeration blockage probability in the integrated wastewater treatment device.

Description

Technical Field

[0001] The present application relates to the technical field of wastewater treatment, and in particular to an integrated aeration and sedimentation device and an aeration and sedimentation method for use in high-ammonia nitrogen wastewater. Background Art

[0002] A large amount of high-concentration ammonia nitrogen wastewater will be generated in the process of chemical production. If this type of wastewater is directly discharged into rivers and other water bodies, it will cause eutrophication of the water body, deteriorate the water body, and damage the environment. Therefore, the wastewater needs to be treated.

[0003] At present, aerobic granular sludge technology can be used to treat high-ammonia nitrogen wastewater: the pretreated wastewater is sent to an aeration and sedimentation integrated reactor (tank), where there are aerobic sludge particles. After the water exchange is completed, anaerobic reaction is carried out for a period of time for organic absorption, etc., followed by aeration, and the sludge particles and wastewater are fully mixed to remove organic matter and ammonia nitrogen, etc., to form large granular sludge. After that, the activated sludge is separated from water in the sedimentation stage to complete the treatment of the wastewater.

[0004] The above treatment process can purify wastewater, but it has the following shortcomings: aeration and sedimentation are integrated, the aeration device and sludge are at the bottom, and as the number of uses and time increase, the aeration head may be blocked. Summary of the Invention

[0005] In order to reduce the probability of aeration blockage in an integrated wastewater treatment device, the present application provides an integrated aeration and sedimentation device and an aeration and sedimentation method for use in high-ammonia nitrogen wastewater.

[0006] In the first aspect, the present application provides an integrated aeration and sedimentation device for use in high-ammonia nitrogen wastewater, which adopts the following technical solution: An integrated aeration and sedimentation device for use in high-ammonia nitrogen wastewater comprises an integrated reactor, the integrated reactor comprising a tank body, and is characterized in that: a composite movable aeration mechanism and a pressing assembly are provided in the tank body, the composite movable aeration mechanism comprising a middle circular plate rotatably connected to the bottom of the tank body, a slider vertically slidably connected to the middle circular plate and extending from the upper portion, a middle cylinder fixed to the upper end of the slider, a horizontal tube fixed to the side wall of the middle cylinder and connected thereto, a prism coaxially fixed to the upper portion of the middle cylinder, a shaft fixed to the upper end of the prism, and an aeration head mounted on the horizontal tube; There are multiple transverse tubes connected to the aeration head. An air supply assembly connected to the shaft and a drive assembly for driving the shaft to rotate are provided on the upper part of the tank body. The pressing assembly includes a fixed pressure block and a pressure rod fixed at the end of the transverse tube away from the middle tube. There are multiple pressure blocks and they are evenly arranged around the inner wall of the tank body. 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.

[0007] Optionally, an overflow port is provided on the upper portion of the tank body and an area near the transverse pipe is connected to a water inlet pipe, a flow meter is installed on the water inlet pipe, the air supply assembly is electrically connected to a control module, and the control module is further electrically connected to the drive assembly, the flow meter, and the valve / pump corresponding to the water inlet pipe, and the control module is configured as follows: If water enters the water inlet pipe, the aeration pump is controlled to remain closed and the motor is controlled to rotate. The motor speed v control method includes: Analyze the water inflow L based on the feedback from the flow meter; Calculate the new wastewater height h based on the water inlet L and the preset tank size parameters; The motor speed v is controlled according to the new wastewater height h, and h and v are in a positive relationship.

[0008] Optionally, a rotating assembly and a dragging assembly are installed on the horizontal pipe, and the aeration head is rotatably connected to the horizontal pipe through the rotating assembly. The rotating assembly includes a rotating pipe, which is rotatably connected to the horizontal pipe and has one end downwardly inserted into the horizontal pipe and the other end upwardly connected to the aeration head; The dragging assembly includes teeth, a rack, a wedge block, a shell, a push plate and a second spring. The shell is fixed to the side wall of the middle cylinder or the transverse tube. The second spring is located in the shell and is parallel to the transverse tube. The push plate is located in the shell and contacts the end of the second spring away from the middle cylinder. One end of the rack is inserted into the shell and fixed to the push plate. There are multiple teeth and they are fixed around the end of the rotating tube outside the transverse tube, and the rack engages with the teeth. There are multiple wedge blocks and there is a wedge block between every two pressure blocks. The end of the rack away from the middle cylinder is close to the inner wall of the tank body and the rotation path intersects with the wedge block. The inclined surface of the wedge block is located in front of the moving direction of the rack.

[0009] Optionally, the rotating assembly further comprises a torsion spring, a stopper and a vertical rod, wherein the torsion spring is sleeved on a section of the rotating tube inserted into the transverse tube, one torsion arm of the torsion spring is fixed to the rotating tube, and the other torsion arm is fixed to the transverse tube, the stopper is fixed to a section of the side wall of the rotating tube inserted into the transverse tube, and the vertical rod is fixed to the transverse tube and is located on the rotation path of the stopper; There are two vertical rods, which are respectively located in the positive and negative rotation directions of the stopper. The rack is an incomplete tooth structure and after moving axially to the bottom, the toothless section of the rack is located in front of the teeth of the rotating tube.

[0010] Optionally, a baffle is provided below the transverse tube, the baffle contacts the inner bottom and inner side wall of the tank body, a slide is fixed to the bottom of the transverse tube, the slide is slidably connected to the baffle, and the sliding connection direction is vertical.

[0011] Optionally, a retaining ring is provided around the bottom edge of the middle tube, and the retaining ring is plugged into the middle circular plate and is in sliding connection.

[0012] Optionally, a telescopic sleeve is provided on the outside of the shaft, and the telescopic sleeve is a flexible sleeve, an elastic sleeve or a bellows structure, the upper end of the telescopic sleeve is fixed along the outer wall of the shaft, and the lower end is fixed to the middle tube; A rubber sleeve is sleeved on a section of the rotating pipe extending out of the horizontal pipe, one end of the rubber sleeve is fixed along the rotating pipe, and the other end is fixed to the horizontal pipe; A limiting ring is fixed on the transverse tube, and the rack passes through the limiting ring.

[0013] Optionally, the air supply assembly includes an aeration pump and a conduit connected to the air outlet port of the aeration pump, the other end of the conduit is inserted into the upper port of the shaft and is rotatably connected; the drive assembly includes a motor and a gear transmission mechanism, the upper part of the tank body is mounted with a bracket, the motor is fixed to the bracket and drives the shaft through the gear transmission mechanism.

[0014] In a second aspect, the present application provides an aeration sedimentation method, which adopts the following technical solution: An aeration sedimentation method uses the aeration sedimentation integrated device for high-ammonia nitrogen wastewater described in one of the above items to treat wastewater.

[0015] Optionally, the integrated reactor may be a group of multiple reactors, and the control module is configured as follows: The time between the first water inflow and the next water inflow after sedimentation of an integrated reactor is defined as T; Establish the formula t=T / n, where n is the number of integrated reactors in the same group; The water inflow duration of any group of integrated reactors is controlled to be t, and the process is carried out in sequence according to the preset sequence numbers of the integrated reactors.

[0016] In summary, this application has the following beneficial technical effects: 1. It can make the aeration head vibrate up and down during use, and work together with the swinging of the aeration head to disperse and clean the impurities on the aeration head, avoid clogging of the aeration head, and ensure the smooth progress of the treatment process; 2. The baffle at the bottom of the horizontal tube is used to push the sediment so that the sediment will not be located under the horizontal tube, thereby ensuring that the horizontal tube will not be squeezed by the accumulated sediment when it descends, ensuring the normal descent of the horizontal tube, and then ensuring that the horizontal tube can vibrate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of this application; Figure 2 It is a partial longitudinal cross-sectional structural diagram of the present application; Figure 3 It is a partial cross-sectional structural schematic diagram of the present application; Figure 4 Figure 3 A magnified schematic diagram of part C in FIG; Figure 5 It is a schematic diagram of the local structure of the tank body of the present application; Figure 6 yes Figure 2 A magnified schematic diagram of part A in FIG; Figure 7 yes Figure 3 A magnified schematic diagram of part B in FIG. Figure 8 It is a control structure diagram of the control module.

[0018] Explanation of the accompanying symbols: 1. integrated reactor; 2. discharge outlet; 3. water inlet pipe; 4. middle circular plate; 5. slider; 6. first spring; 7. middle cylinder; 8. horizontal tube; 9. aeration head; 10. shaft; 11. prism; 12. telescopic sleeve; 13. pressure rod; 14. pressure block; 15. arc surface; 16. rotating tube; 17. torsion spring; 18. block; 19. vertical rod; 20. rubber sleeve; 21. teeth; 22. rack; 23. wedge block; 24. shell; 25. push plate; 26. second spring; 27. limiting ring; 28. motor; 29. ​​gear; 30. aeration pump; 31. conduit; 32. baffle; 33. slide plate; 34. retaining ring; 35. flow meter. DETAILED DESCRIPTION

[0019] The following is combined with Figures 1-8 This application is described in further detail.

[0020] The embodiments of the present application disclose an integrated aeration and sedimentation device for use in high-ammonia nitrogen wastewater.

[0021] Reference Figure 1 The aeration and sedimentation integrated device used for high ammonia nitrogen wastewater includes an integrated reactor 1, The integrated reactor 1 includes a support structure and a tank body fixed on the support structure. The support structure can be a frame, a pillar structure, etc. The tank body can be barrel-shaped, box-shaped, etc. This embodiment takes the barrel shape as an example. Its top is open and the side walls and bottom are connected to multiple pipes, at least one of which is used as an outlet 2 for sending out sludge and one as an inlet pipe 3 for water intake, so as to discharge treated water, send in wastewater, discharge sludge, etc. This is the existing technology and will not be repeated here.

[0022] A composite movable aeration mechanism is provided at the bottom of the tank, and a driving assembly is installed on the upper part for driving it, so that the aeration part vibrates in multiple directions during the water treatment process, reducing the chance of dirt stagnation, accumulation and scaling in the aeration part, and reducing the chance of aeration blockage.

[0023] Reference Figure 2 , about the compound active aeration mechanism, specifically: A structural groove is provided in the middle of the inner bottom of the tank body, in which a central circular plate 4 is installed. A cavity with an upper opening is formed inside the central circular plate 4. The cavity 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 portion of the slider 5 extends out of the structural groove and is fixed with a central tube 7. The side walls of the central tube 7 are fixed with interconnected transverse tubes 8. There are multiple transverse tubes 8 and they are evenly distributed around the central tube 7. Aeration heads 9 are equidistantly installed on the top of the transverse tubes 8. It is understood that the aeration heads 9 are connected to the transverse tubes 8 at the bottom and have an external air outlet at the top. This is a prior art and will not be described in detail.

[0024] Reference Figure 2 A first spring 6 is fixed to the bottom of the slider 5. The first spring 6 is vertically oriented, with its lower end fixed to the bottom of the central circular plate 4. A prism 11 is inserted into the top of the central cylinder 7 in a sliding connection. A shaft 10 is fixed to the top of the prism 11. Both shaft 10 and prism 11 are hollow structures. A stirring blade is mounted on the sidewall of the shaft 10, and the top is connected to a drive assembly and an air supply assembly. The stirring blade is a detachable structure, for example, with a threaded connection.

[0025] Reference Figure 3 and Figure 4 A pressing assembly is mounted on the inner wall of the tank. The pressing assembly includes a pressing rod 13 and a pressing block 14. The pressing rod 13 is fixed to the end of the transverse tube 8 that is away from the middle tube 7 and is sealed at that end. Multiple pressing blocks 14 are evenly distributed around the inner wall of the tank. One lateral end of each pressing block 14 forms a downwardly facing arcuate surface 15. The rotational path of the pressing rod 13 intersects with the pressing block 14, and the arcuate surface 15 is located in front of the rotational direction of the pressing rod 13.

[0026] Usage process: When entering the aeration stage, the air supply component supplies air to the shaft 10, and the air passes through the prism 11, the middle tube 7 and the cross tube 8 and is sent out from the aeration head 9 for aeration; the driving component links the shaft 10 to rotate, and the rotation of the shaft 10 drives the middle tube 7 to rotate through the prism 11, that is, drives the cross tube 8 to rotate; after the cross tube 8 rotates, the pressure rod 13 rotates along with it and contacts the arc surface 15 during the movement and is pressed down by the pressure block 14. When the pressure rod 13 is pressed down, the cross tube 8 is pressed down together and compresses the first spring 6; when the pressure rod 13 is separated from the pressure block 14, the pressure rod 13 and the cross tube 8 quickly jump up and reset, and the downward pressure and upward jump cycle is repeated, so that the aeration head 9 will vibrate on the one hand to shake off impurities and dirt on its surface; on the other hand, it rotates synchronously to throw away the dirt on the surface, thereby reducing the chance of aeration blockage in the integrated wastewater treatment device.

[0027] Furthermore, considering that the above-mentioned prism 11 and the middle cylinder 7 may slide, a telescopic sleeve 12 is provided 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 fixed along the outer wall of the shaft 10, and the lower end is fixed to the top of the middle cylinder 7.

[0028] Reference Figure 5 Furthermore, in order to prevent sludge and other sediments from staying under the horizontal tube 8 and the middle tube 7 and hindering their descent, a baffle 32 is provided under the horizontal tube 8, and the baffle 32 contacts the bottom and inner wall of the tank; a slide 33 is fixed to the bottom of the horizontal tube 8, and the slide 33 is slidably connected to the baffle 32, so that the baffle 32 can rotate with the horizontal tube 8 to push the sediment, and can also move up and down relative to the horizontal tube 8 without hindering the up and down jumping of the horizontal tube 8.

[0029] A retaining ring 34 is fixed around the edge at the bottom of the middle cylinder 7, and the retaining ring 34 is inserted and slidably inserted into a movable groove preset on the top of the middle circular plate 4. The retaining ring 34 can prevent sediment such as sludge from entering the bottom of the middle cylinder 7.

[0030] Reference Figure 6 and Figure 7 In another embodiment of the present 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 stopper 18 and a vertical rod 19.

[0031] 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 sleeved around the section of the rotating tube 16 located within the horizontal tube 8. One arm of the torsion spring 17 is fixed to the rotating tube 16, while the other arm is fixed to the inner wall of the horizontal tube 8. A stopper 18 is fixed to the outer wall of the rotating tube 16 within the horizontal tube 8. A vertical rod 19 is fixed to the horizontal tube 8 and is located in the rotation path of the stopper 18.

[0032] It can be understood that the transverse 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 on the outer cover of the rotating pipe 16, one end of the rubber sleeve 20 is fixed along the rotating pipe 16, and the other end is fixed to the outer wall of the transverse pipe 8 to reduce the appearance of sludge and structure in the rotating gap.

[0033] A drag assembly for driving the rotating assembly, i.e., the rotating tube 16 , to rotate is also provided on the transverse tube 8 . The drag assembly includes teeth 21 , a rack 22 , a wedge block 23 , a housing 24 , a push plate 25 and a second spring 26 .

[0034] The housing 24 is fixed to the side wall of the middle tube 7 or the transverse tube 8 and has an open top. The open screws secure the corresponding sealing cover. The second spring 26 is located in the housing 24 and is parallel to the transverse tube 8. The push plate 25 is located in the housing 24 and contacts the end of the second spring 26 away from the middle tube 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, no teeth are required at the meshing position. There are multiple teeth 21 that are evenly fixed around the end of the rotating tube 16 located outside the transverse tube 8. The rack 22 engages 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 tube 7 is close to the inner wall of the tank body, and its rotation path intersects with the wedge block 23. The inclined surface of the wedge block 23 is located in front of the movement direction of the rack 22.

[0035] In one embodiment, it should be noted that each stopper 18 corresponds to two vertical rods 19, which are located in both the forward and reverse rotation directions. When the rack 22 moves axially to the bottom, the toothless section of the rack 22 is located in front of the teeth 21 of the rotating tube 16, i.e., it is disengaged.

[0036] According to the above arrangement, the horizontal tube 8 moves with the rack 22. When the rack 22 moves between the two pressure blocks 14, it will conflict with the inclined surface of the wedge block 23, so that the rack 22 is squeezed to move with the push plate 25, squeezing the second spring 26 to deform it and generate a force; as the rack 22 moves, its matching teeth 21 rotate the rotating tube 16, and the rotating tube 16 rotates to compress the torsion spring 17; when the rack 22 leaves the wedge block 23, the compressed second spring 26 releases its force to push the push plate 25 and the rack 22 to reset, so that the aeration head 9 can be reversed and the dirt on the surface can be thrown out.

[0037] That is, the aeration head 9 can swing forward and reverse; more importantly, due to the special tooth-missing design mentioned above, the aeration head 9 actually rotates forward first, and then when the teeth are not engaged, the torsion spring 17 is released to allow the aeration head 9 to quickly rotate in the reverse direction, and the aeration head 9 will repeatedly shake at the end due to the collision with the vertical rod 19; thereafter, when the rack 22 is reset, the aeration head 9 is reversed, and again when the teeth are not engaged, the torsion spring 17 is released to allow the aeration head 9 to quickly rotate in the reverse direction again, and the collision with the vertical rod 19 will cause repeated shaking at the end.

[0038] That is, the present application can allow the aeration head 9 to move at a faster speed during the movement of the horizontal pipe 8, and each rack 22 moves completely at one time, so that the aeration head 9 swings forward and backward multiple times, which has a better effect.

[0039] A limiting ring 27 is fixed to the outer wall of the transverse tube 8 , and the limiting ring 27 is sleeved outside the rack 22 to reinforce and guide it to prevent the rack 22 from being easily broken or bent.

[0040] In one embodiment of the present application, a bracket is fixed on the top of the tank body, and a drive assembly is installed on the bracket. The drive assembly includes a motor 28 and a gear transmission mechanism. The motor 28 is fixed to the bracket. The gear transmission mechanism includes at least two gears 29, one gear 29 is fixed to the motor output shaft, and the other gear is sleeved on the shaft 10.

[0041] During use, the motor 28 is started to drive the shaft 10 to rotate through the gear transmission mechanism.

[0042] In one embodiment of the present 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, the upper end of the shaft 10 is sleeved around the other end of the conduit 31 and the two are rotatably sealed and connected.

[0043] During use, the aeration pump 30 is started to introduce air into the shaft 10 through the conduit 31 to achieve gas injection.

[0044] Reference Figure 8 In one embodiment of the present application, the present application also includes a control module, which includes a PLC controller and a corresponding host computer. The PLC controller is electrically connected to the motor 28, the aeration pump 30, and the water inlet control unit on the water inlet pipe 3. The water inlet control unit can be an electric valve on the water pipe or a water delivery pump.

[0045] There is an overflow port at the top of the tank body for allowing the treated water to flow out, and the water inlet pipe 3 is at the bottom of the tank body. There are no stirring blades on the shaft 10, which is in a bare rod state. The control module (such as a PLC controller) is configured as follows: if water flows into the water inlet pipe 3, that is, the valve and pump on the pipe are opened, the aeration pump 30 is controlled to remain in the closed state, and the motor 28 is controlled to rotate.

[0046] According to the above arrangement, the discharge and intake of water after sedimentation in this application can occur simultaneously, with new wastewater entering the lower part and the treated water being sent out from the upper part. Therefore, the aeration head 9 does not need to stop for a period of time to allow the water to drain before resuming activity. The stop time of the aeration head 9 is relatively short, which can reduce the time that sludge and the like remain on the surface, increase the difficulty of dirt accumulation and stagnation and scaling, and reduce the chance of aeration blockage.

[0047] Furthermore, a flow meter 35 is installed on the water inlet pipe 3, and the flow meter 35 is electrically connected to the control module (ie, the PLC controller). The motor 28 is electrically connected to the control module via a frequency converter. The control module is configured as follows: If water enters the water inlet pipe 3, the water inlet volume L is analyzed based on the feedback from the flow meter 35; L = flow rate * time; Calculate the new wastewater height h based on the water inlet L and the preset tank size parameters (inner bottom area s); h=L / s; The speed v of the motor 28 is controlled according to the height h of the new wastewater, and h and v are in a positive relationship, 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 of the wastewater above h.

[0048] Because the rotation speed v of the motor 28, or the rotation speed of the horizontal pipe 8, is increased according to the increase in the height h of the new wastewater, the probability of the horizontal pipe 8 accidentally disturbing the water body excessively when the height of the new wastewater below is insufficient, causing the water body with good sedimentation in the upper layer to become turbid again, can be reduced, thereby ensuring that there will be no excessive interference with drainage.

[0049] Because drainage and water intake occur after sedimentation, it can be seen that the sludge in the lower part of the tank is relatively large and heavy at this stage. At this time, the speed of the motor 28 is gradually increased instead of all at once, so the probability of damage to the motor 28 can be reduced, and the probability of deformation and damage of many structures on the cross pipe 8 can also be reduced, thereby extending the service life of the equipment.

[0050] The embodiments of the present application also disclose an aeration sedimentation method.

[0051] The aeration sedimentation method includes applying the above-mentioned aeration sedimentation integrated device for high-ammonia nitrogen wastewater. The use of the device has been described in the above embodiments and will not be repeated here.

[0052] In one embodiment, the method further includes: the integrated reactor 1 may be a group of multiple reactors, and the control module is configured to: The time between the first water inflow and the next water inflow after precipitation of an integrated reactor 1 is defined as T; Establish the formula t=T / n, where n is the number of integrated reactors 1 in the same group; The water inflow duration of any group of integrated reactors 1 is controlled to be t, and the process is carried out in sequence according to the preset sequence numbers.

[0053] According to the above arrangement, wastewater is continuously fed in, and the water intake, anaerobic reaction, aeration, and sedimentation processes alternately occur in each integrated reactor 1, resulting in relatively efficient wastewater treatment. Moreover, if any device fails, for example, aeration blockage, it is only necessary to adjust n to quickly coordinate the other devices to continue working, thereby ensuring the stability of wastewater treatment.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An aeration and sedimentation integrated device for use in high-ammonia nitrogen wastewater, comprising an integrated reactor (1), wherein the integrated reactor (1) comprises a tank body, and is characterized in that: The tank body is provided with a composite movable aeration mechanism and a pressing assembly, the composite movable aeration mechanism comprising a middle circular plate (4) rotatably connected to the inner bottom of the tank body, a slider (5) vertically slidingly connected to the middle circular plate (4) and extending from the upper portion, a middle cylinder (7) fixed to the upper end of the slider (5), a horizontal pipe (8) fixed to the side wall of the middle cylinder (7) and connected thereto, a prism (11) coaxially fixed to the upper portion of the middle cylinder (7), a shaft (10) fixed to the upper end of the prism (11), and an aeration head (9) mounted on the horizontal pipe (8); The transverse tubes (8) are multiple and connected to the aeration head (9); an air supply assembly connected to the shaft (10) and a driving assembly for driving the shaft (10) to rotate are arranged on the upper part of the tank body; the pressing assembly includes a fixed pressing block (14) and a pressing rod (13) fixed to the end of the transverse tube (8) away from the middle cylinder (7); the pressing blocks (14) are multiple and evenly arranged around the inner wall of the tank body; one lateral end of the pressing block (14) forms a downwardly 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).

2. The aeration and sedimentation integrated device for treating high-ammonia nitrogen wastewater according to claim 1, characterized in that: The upper portion of the tank body is provided with an overflow port and the area near the transverse pipe (8) is connected to a water inlet pipe (3), a flow meter (35) is installed on the water inlet pipe (3), the air supply assembly is electrically connected to a control module, and the control module is also electrically connected to the drive assembly, the flow meter (35) and the valve / pump corresponding to the water inlet pipe (3), and the control module is configured as follows: If water flows into the water inlet pipe (3), the aeration pump (30) is controlled to remain in a closed state, and the motor (28) is controlled to rotate, and the speed v of the motor (28) is controlled in the following manner: Analyze the water inflow L based on the feedback from the flow meter (35); Calculate the new wastewater height h based on the water inlet L and the preset tank size parameters; The speed v of the motor (28) is controlled according to the new wastewater height h, and h and v are in a positive relationship.

3. The aeration and sedimentation integrated device for treating high-ammonia nitrogen wastewater according to claim 1, characterized in that: The horizontal pipe (8) is provided with a rotating assembly and a dragging assembly, and the aeration head (9) is rotatably connected to the horizontal pipe (8) via the rotating assembly. The rotating assembly includes a rotating pipe (16), and the rotating pipe (16) is rotatably connected to the horizontal pipe (8) and has one end downwardly inserted into the horizontal pipe (8) and the other end upwardly connected to the aeration head (9); The drag assembly includes teeth (21), a 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 transverse tube (8). The second spring (26) is located in the housing (24) and is parallel to the transverse tube (8). The push plate (25) is located in the housing (24) and contacts one 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 teeth (21) are multiple and fixed around one end of the rotating tube (16) located outside the horizontal tube (8), and the rack (22) engages with the teeth (21); the wedge blocks (23) are multiple and there is a wedge block (23) between every two pressure blocks (14), the end of the rack (22) away from the middle tube (7) is close to the inner wall of the tank body and the rotation path intersects with the wedge block (23), and the inclined surface of the wedge block (23) is located in front of the moving direction of the rack (22).

4. The aeration and sedimentation integrated device for treating high-ammonia nitrogen wastewater according to claim 3, characterized in that: The rotating assembly further comprises a torsion spring (17), a stopper (18) and a vertical rod (19), wherein the torsion spring (17) is sleeved on a section of the rotating tube (16) inserted into the transverse tube (8), one torsion arm of the torsion spring (17) is fixed to the rotating tube (16), and the other torsion arm is fixed to the transverse tube (8), the stopper (18) is fixed to a side wall section of the rotating tube (16) inserted into the transverse tube (8), and the vertical rod (19) is fixed to the transverse tube (8) and is located on the rotation path of the stopper (18); There are two vertical rods (19) and they are respectively located in the positive and negative rotation directions of the stopper (18). The rack (22) is an incomplete tooth structure and after the rack (22) moves axially to the bottom, the toothless section is located in front of the teeth (21) of the rotating tube (16).

5. The aeration and sedimentation integrated device for treating high-ammonia nitrogen wastewater according to claim 1, characterized in that: A baffle (32) is provided below the transverse tube (8), the baffle (32) contacts the inner bottom and inner side wall of the tank body, and a slide plate (33) is fixed to the bottom of the transverse tube (8), the slide plate (33) is slidably connected to the baffle (32), and the sliding connection direction is vertical.

6. The aeration and sedimentation integrated device for treating high-ammonia nitrogen wastewater according to claim 5, characterized in that: A retaining ring (34) is provided around the bottom edge of the middle cylinder (7), and the retaining ring (34) is plugged into the middle circular plate (4) and is in sliding connection.

7. The aeration and sedimentation integrated device for treating high-ammonia nitrogen wastewater according to claim 4, characterized in that: The shaft (10) is provided with a telescopic sleeve (12) on its exterior. 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 (10), and the lower end is fixed to the middle cylinder (7). A section of the rotating tube (16) extending outside the transverse tube (8) is covered with a rubber sleeve (20), one end of the rubber sleeve (20) is fixed along the rotating tube (16), and the other end is fixed to the transverse tube (8); A limiting ring (27) is fixed on the transverse tube (8), and the rack (22) passes through the limiting ring (27).

8. The aeration and sedimentation integrated device for treating high-ammonia nitrogen wastewater according to claim 1, characterized in that: The air supply assembly includes an aeration pump (30) and a conduit (31) connected to the air outlet port of the aeration pump (30), and the other end of the conduit (31) is inserted into the upper port of the shaft (10) and is rotatably connected; the drive assembly includes a motor (28) and a gear (29) transmission mechanism, and a bracket is installed on the upper part of the tank body. The motor (28) is fixed to the bracket and drives the shaft (10) through the gear (29) transmission mechanism.

9. An aeration sedimentation method, characterized in that: The wastewater is treated using the aeration and sedimentation integrated device for high ammonia nitrogen wastewater as described in any one of claims 2, 4 or 7.

10. The aeration sedimentation method according to claim 9, characterized in that: The integrated reactor (1) is provided in a plurality of groups, and the control module is configured as follows: Define an integrated reactor (1) where the time from the first water inflow to the next water inflow after sedimentation is T; The formula t=T / n is established, where n is the number of the same group of integrated reactors (1); The water inflow duration of any group of integrated reactors (1) is controlled to be t, and is performed in sequence according to the preset sequence numbers of the integrated reactors (1).

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