Aeration device and method for wastewater treatment

Abstract

The invention belongs to the technical field of aeration equipment, and particularly relates to an aeration device and method for wastewater treatment, the aeration device comprises an aeration pump and an aeration pipe, and further comprises a lifting operation mechanism, the lifting operation mechanism is mounted in an aeration tank, and the lifting operation mechanism is used for controlling the aeration pipe to lift in the aeration tank; according to the invention, on one hand, when the aeration equipment is shut down, compared with the conventional technology that the position of the aeration pipe is fixed, the aeration pipe is separated from the sludge by using the position change, so that the probability that the aeration pipe is covered and blocked by the sludge is avoided, and the normal operation of the aeration operation is maintained; the aeration pipe performs gas impact from the top layer of the sludge, and along with continuous aeration operation, the sludge layer is gradually impacted and dispersed in the wastewater, so that the impurity content of the activated sludge and aeration bubbles is improved, oxygen is conveniently supplemented for the activated sludge, and the purification effect of the activated sludge on the wastewater is enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of aeration equipment, and in particular relates to an aeration device and method for wastewater treatment. Background Art

[0002] In the wastewater treatment process, the aeration process can add oxygen to the wastewater. Combined with the activated sludge or biofilm method, it can effectively improve the decomposition efficiency of organic matter in the wastewater. At the same time, aeration treatment can also promote the suspension and mixing of suspended matter in the wastewater, improve the wastewater treatment effect, and provide an efficient and environmentally friendly solution for wastewater treatment.

[0003] Conventional microporous aeration equipment is placed at the bottom of the aeration tank. Compressed air is injected, ejecting air from the aeration holes in the form of tiny bubbles. As these bubbles rise through the wastewater, oxygen gradually dissolves into the water, replenishing oxygen in the water. During this process, the smaller the bubble diameter, the more efficiently the oxygen dissolves in the water. Therefore, to maximize aeration efficiency, the aeration hole diameter is typically designed between 3 and 10 microns. However, in practice, aeration equipment may be temporarily out of service due to equipment overhaul, maintenance, or interruptions or pauses in the water treatment process, resulting in an interruption in the pumping of compressed air. In this situation, wastewater, sludge, and other substances may migrate into the aeration holes, increasing the risk of hole blockage. Furthermore, the likelihood of hole blockage increases with increasing downtime.

[0004] Conventional technology has been used to reduce the chance of aeration apertures becoming clogged, and a clogging-resistant microbubble aeration device has been disclosed. Publication No. CN118026430A discloses an aeration device. This device employs an aeration element. During aeration and microbubble discharge, a first shaft is synchronously driven to rotate, thereby driving a curved frame and scraper strips. Because the scraper strips contact the outer wall of the aeration outer tube, the rotating curved frame and scraper strips not only disperse microbubbles exiting the aeration outer holes, further increasing the solubility of oxygen in the water, but also scrape away impurities exiting the aeration outer holes, further preventing them from adhering to the outer wall of the aeration outer tube and causing clogging. However, in actual use, it has been found that because the aeration device is located at the bottom of the aeration tank and is surrounded by sludge, the presence of sludge can corrode the aeration device. Consequently, overly sophisticated aeration device structures can increase the failure rate of the aeration device. Furthermore, prolonged downtime can lead to sludge entering the aeration apertures, forming stubborn stains that can cause clogging.

[0005] In view of this, the present invention proposes an aeration device and method for wastewater treatment to solve the above technical problems. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes an aeration device and method for wastewater treatment.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: an aeration device for wastewater treatment according to the present invention comprises an aeration pump and an aeration pipe, wherein the aeration pipes are evenly arranged and installed in an aeration tank, the aeration pipes are made of microporous pipes, and the aeration pump is used to pump compressed air into the aeration pipes; It also includes a lifting operation mechanism, which is installed in the aeration tank and is used to control the aeration pipe to rise and fall in the aeration tank; The lifting operation mechanism includes a mounting pipe, a lifting rod and a pipe rack; The installation pipes are evenly installed in the aeration tank, the bottom ends of the installation pipes are open, and the aeration pumps are connected to the inner cavity of the installation pipes through pipelines; A lifting rod is installed in the installation tube in a sliding and sealing manner, and the top end of the lifting rod is elastically connected to the installation tube through a lifting spring; The pipe rack is fixedly mounted on the bottom of the lifting rod, and the aeration pipes are evenly mounted on the pipe rack. Both the lifting rod and the pipe rack are hollow structures.

[0008] Preferably, a conical bucket is installed on the pipe rack, the conical bucket corresponds to the aeration pipe one-to-one, the aeration pipe extends to the inside of the conical bucket, and the top end of the conical bucket is opened.

[0009] Preferably, the conical bucket is provided with symmetrically distributed one-way grooves, a baffle is hingedly installed in the one-way groove, a torsion spring is fixedly installed in the one-way groove, and the torsion spring is fixedly connected to the baffle.

[0010] Preferably, it further comprises an air pressure control mechanism, which controls the lifting of the lifting rod by adjusting the air pressure in the installation pipe; The air pressure control mechanism includes a control valve, a control plate and a control rod; The control valve is fixedly installed between the pipe rack and the aeration pipe. A ventilation groove is provided on the control valve. The control valve is connected to the pipe rack and the aeration pipe through the ventilation groove. The control valve is provided with an adjustment groove, a control plate is slidably mounted in the adjustment groove, a through hole is provided on the control plate, and in an initial state, the through hole is misaligned with the vent groove; A control rod is installed at the bottom of the control valve, the control rod extends into the adjustment groove, and the control piece is located on the movement path of the control rod.

[0011] Preferably, a diaphragm is fixedly installed at the bottom of the adjustment groove, and the diaphragm extends between the control rod and the control plate. The diaphragm is used to seal the adjustment groove.

[0012] Preferably, an adaption groove is provided on the conical bucket, and the aeration pipe extends into the interior of the conical bucket through the adaption groove. The control rod is designed to be L-shaped, and the control rod is fixedly connected to the conical bucket.

[0013] Preferably, it further comprises a sludge impact mechanism, wherein the sludge impact mechanism is installed on the lifting rod and is used to enhance the aeration intensity; The sludge impact mechanism includes a blocking plate, a driving rod and a sliding rod; A driving rod and a sliding rod are rotatably mounted on the lifting rod, and a plurality of reciprocating thread grooves are opened in the middle of the driving rod; The blocking plate is slidably mounted on the pipe rack, a transmission groove is provided on the blocking plate, the drive rod and the slide rod both extend into the transmission groove, a nut is fixedly mounted in the transmission groove, and the blocking plate is spirally driven by the nut and the drive rod.

[0014] Preferably, an impact groove is provided on the lifting rod, the driving rod extends into the impact groove, and a pneumatic wheel is fixedly mounted on the end of the driving rod.

[0015] Preferably, the width of the blocking plate is greater than the width of the opening at the top of the conical bucket, an adapter plate is fixedly installed on the aeration pipe, and a sealing gasket is fixedly installed at the top of the conical bucket.

[0016] An aeration method for wastewater treatment, the method comprising the following steps: S1: Control the aeration pump to start, the aeration pump draws air and pumps it into the installation pipe, causing the air pressure in the rodless cavity of the installation rod to increase, pushing the lifting rod downward; S2: As the lifting rod continues to descend, the bottom end of the conical bucket contacts the sludge at the bottom of the aeration tank. As the conical bucket extends into the sludge, relative movement occurs between the conical bucket and the pipe rack. S3: The conical bucket and the control rod push the control plate to move, causing the through slot and the ventilation slot to gradually align. Compressed air enters the aeration pipe and is ejected from the micropores on the aeration pipe, forming fine bubbles. S4: The compressed air flows and drives the pneumatic wheel to rotate. Under the spiral transmission of the driving rod and the nut, the blocking plate periodically blocks the conical bucket, causing the air pressure to be ejected from the one-way groove and impact the sludge. S5: When aeration stops, the aeration pump is turned off, and under the action of the lifting spring, the lifting rod and the pipe rack move upward, causing the aeration pipe to separate from the sludge.

[0017] The beneficial effects of the present invention are as follows: 1. The aeration device and method for wastewater treatment described in the present invention, by providing a lifting operation mechanism, changes the position of the aeration pipe during the aeration operation and non-aeration operation stages. On the one hand, when the aeration equipment is shut down, compared with the conventional technology in which the aeration pipe is fixed in position, the present invention utilizes the change in position to separate the aeration pipe from the sludge, thereby avoiding the probability of the aeration pipe being covered or blocked by the sludge, thereby maintaining the normal progress of the aeration operation. On the other hand, during the aeration operation, the aeration pipe is subjected to air impact from the top layer of the sludge. As the aeration operation continues, the sludge layer is gradually impacted and dispersed in the wastewater, thereby increasing the impurity content of the activated sludge and aeration bubbles, thereby facilitating the replenishment of oxygen for the activated sludge and enhancing the purification effect of the activated sludge on wastewater.

[0018] 2. The aeration device and method for wastewater treatment described in the present invention, through the provision of a conical bucket, enables the aeration tube to move downward. When oxygen is replenished to the activated sludge, the probability of direct contact between the aeration tube and the activated sludge is reduced. At the same time, the conical bucket can be used to guide the movement direction of bubbles and sludge, so that the bubbles are mixed with the water flow, thereby achieving rapid dispersion of the activated sludge, thereby improving the efficiency of oxygen replenishment of the activated sludge, and at the same time enhancing the mixing degree of the activated sludge and wastewater, resulting in improved purification efficiency of the activated sludge for wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a stereogram of the assembly of the present invention and the aeration tank; Figure 2 is a perspective view of the present invention; Figure 3 It is a three-dimensional diagram of the lifting operation mechanism; Figure 4 This is a three-dimensional diagram of the assembly of the blocking plate and the driving rod; Figure 5 It is a partial perspective view of a conical bucket; Figure 6 It is a three-dimensional diagram of the baffle; Figure 7 This is a three-dimensional diagram of the assembly of the control valve and the aeration pipe; Figure 8 It is a cross-sectional view of the control valve; Figure 9 is a cross-sectional view of the present invention; Figure 10 yes Figure 9 A partial enlarged view of point A in the middle; Figure 11 is a flow chart of the method of the present invention; In the figure: 1. Aeration pump; 11. Aeration tank; 12. Aeration pipe; 2. Mounting pipe; 21. Lifting rod; 22. Pipe rack; 23. Lifting spring; 24. Conical bucket; 25. One-way groove; 26. Baffle; 27. Torsion spring; 3. Control valve; 31. Control plate; 32. Control rod; 33. Vent groove; 34. Adjustment groove; 35. Diaphragm; 36. Adaptation groove; 4. Sealing plate; 41. Drive rod; 42. Slide rod; 43. Transmission groove; 44. Nut; 45. Impact groove; 46. Pneumatic wheel; 5. Adapter plate; 51. Sealing gasket. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figures 1 to 10 As shown, an aeration device for wastewater treatment according to the present invention comprises an aeration pump 1 and an aeration pipe 12. The aeration pipes 12 are evenly arranged and installed in an aeration tank 11. The aeration pipes 12 are made of microporous pipes. The aeration pump 1 is used to pump compressed air into the aeration pipes 12. It also includes a lifting operation mechanism, which is installed in the aeration tank 11 and is used to control the aeration pipe 12 to rise and fall in the aeration tank 11; The lifting mechanism includes: a mounting pipe 2, a lifting rod 21 and a pipe rack 22; The installation pipe 2 is evenly installed in the aeration tank 11, the bottom end of the installation pipe 2 is open, and the aeration pump 1 is connected to the inner cavity of the installation pipe 2 through a pipeline; A lifting rod 21 is installed in a sliding and sealing manner in the mounting tube 2, and the top end of the lifting rod 21 is elastically connected to the mounting tube 2 via a lifting spring 23; The pipe rack 22 is fixedly mounted on the bottom of the lifting rod 21 , and the aeration pipes 12 are evenly mounted on the pipe rack 22 . Both the lifting rod 21 and the pipe rack 22 are hollow structures.

[0023] When aerating wastewater, in order to prevent the aeration equipment from being covered or blocked by the activated sludge settled and accumulated in the aeration tank 11 when the aeration equipment is shut down, a lifting operation mechanism is provided in the present invention. When the aeration equipment is shut down, the aeration pipe 12 with micropores is suspended in the middle of the aeration tank 11 under the action of the lifting operation mechanism. During the aeration operation, the aeration pipe 12 gradually moves toward the settled activated sludge to replenish oxygen for the activated sludge.

[0024] Specifically, in the initial state (i.e., the aeration equipment is shut down and not started), under the action of the lifting spring 23, most of the lifting rod 21 is retracted inside the mounting pipe 2, and the pipe rack 22 and the aeration pipe 12 installed at the bottom of the lifting rod 21 are suspended in the aeration tank 11, and the activated sludge in the aeration tank 11 is settled at the bottom of the tank. By separating the activated sludge from the aeration pipe 12, the probability of the activated sludge clogging the micropores of the aeration pipe 12 is reduced. When aeration treatment is required, the wastewater is filtered through the coarse filter layer and discharged into the aeration tank 11. At this time, the aeration pump 1 needs to be turned on, and the aeration pump 1 continuously extracts external air, pressurizes it, and pumps it into the inner cavity of the mounting pipe 2. In the present invention, the lifting rod 21 is located at one end of the inner cavity of the mounting pipe 2 and is made of elastic rubber material and is piston-type. Therefore, the lifting rod 21 is slidably and sealedly installed in the inner cavity of the mounting pipe 2. When the air pressure in the rodless cavity of the mounting pipe 2 continues to increase, under the combined action of air pressure and gravity, the lifting rod 21 moves downward, causing the lifting rod 21 to move downward. The tension spring 23 stretches, and as the lifting rod 21 continues to descend, the pipe rack 22 and the aeration pipe 12 will gradually approach the activated sludge. At the same time, the compressed air in the inner cavity of the installation pipe 2 will flow into the aeration pipe 12 along the lifting pipe and the pipe rack 22, and be ejected from the micropores on the aeration pipe 12 in the form of dense small bubbles and sprayed into the wastewater. As the aeration pipe 12 continues to approach the sludge, some of the bubbles will impact the activated sludge. Combined with the floating effect of the bubbles, the activated sludge deposited at the bottom of the aeration tank 11 will gradually diffuse in the wastewater. The microorganisms in the activated sludge begin to purify the wastewater with the cooperation of oxygen in the small bubbles, thereby achieving purification of the wastewater. As aeration continues and the coarse filtered wastewater continues to flow in, part of the wastewater after aeration treatment gradually flows into the sedimentation tank and the refilter tank. After sedimentation, medium filtration and fine filtration, the activated sludge is separated from the wastewater, thereby achieving preliminary purification of the wastewater.

[0025] It should be noted that in the present invention, the start and stop and power of the aeration pump 1 are controlled by an intelligent control system, wherein the intelligent control system includes at least a water quality detection module and a data processing module. The water quality detection module mainly uses sensors to perform real-time detection of wastewater, realizes monitoring of parameters such as wastewater pH value, dissolved oxygen, chemical oxygen demand, and transmits the detection results to the data processing module in real time, analyzes water quality data through data processing technology, and adjusts the parameters of the aeration pump 1 according to the water quality data and a pre-set calculation program.

[0026] The present invention provides a lifting operation mechanism, so that the position of the aeration pipe 12 can be changed during the aeration operation and non-aeration operation stages. On the one hand, when the aeration equipment is shut down, compared with the conventional technology in which the position of the aeration pipe 12 is fixed, the present invention utilizes the change in position to separate the aeration pipe 12 from the sludge, thereby avoiding the probability of the aeration pipe 12 being covered or blocked by the sludge, thereby maintaining the normal progress of the aeration operation. On the other hand, during the aeration operation, the aeration pipe 12 is subjected to air impact from the top layer of the sludge. As the aeration operation continues, the sludge layer is gradually impacted and dispersed in the wastewater, thereby increasing the impurity content of the activated sludge and aeration bubbles, thereby facilitating the replenishment of oxygen for the activated sludge and enhancing the purification effect of the activated sludge on the wastewater.

[0027] As a preferred embodiment of the present invention, a conical bucket 24 is installed on the pipe rack 22. The conical bucket 24 corresponds to the aeration pipe 12 one by one. The aeration pipe 12 extends into the interior of the conical bucket 24. The top of the conical bucket 24 is opened.

[0028] The conical bucket 24 is provided with symmetrically distributed one-way grooves 25 , a baffle 26 is hingedly installed in the one-way groove 25 , a torsion spring 27 is fixedly installed in the one-way groove 25 , and the torsion spring 27 is fixedly connected to the baffle 26 .

[0029] During the position change of the aeration pipe 12, the setting of the conical bucket 24 can effectively separate the sludge from the aeration pipe 12, thereby reducing the probability of sludge entering the aeration pipe 12. Specifically, when the aeration pump 1 is started and continuously pumps compressed air into the installation pipe 2, the lifting rod 21 and the pipe rack 22 move downward. During the movement, the conical bucket 24 installed on the pipe rack 22 moves synchronously. Since the conical bucket 24 is located below the aeration pipe 12 and the aeration pipe 12 extends to the inside of the conical bucket 24, the conical bucket 24 first contacts the sludge and, during continuous movement, the conical bucket 24 discharges the sludge. When the height of the opening at the top of the conical bucket 24 is less than the height of the sludge layer, the sludge has a tendency to flow into the inside of the conical bucket 24. However, under the action of the continuously aerated aeration pipe 12, dense bubbles float upward from the top of the conical bucket 24, forming an upward flowing water flow. The sludge moves upward rapidly following the water flow and bubbles, and is finally dispersed in the wastewater. After the wastewater treatment is completed, the speed at which the aeration pump 1 delivers compressed air continues to decrease, causing the air pressure in the installation pipe 2 to continue to decrease. Then, under the action of the tension spring, the lifting rod 21 pulls the pipe rack 22 and the aeration pipe 12 upward. Since the top of the conical bucket 24 is open, when the conical bucket 24 moves upward, the wastewater moves into the conical bucket 24 and pushes the baffle 26, causing the baffle 26 to rotate and the one-way groove 25 to open. The sludge inside the conical bucket 24 moves downward rapidly. At the same time, because the lifting rod 21 rises, the air in the installation pipe 2 is still discharged into the aeration pipe 12. Therefore, although the aeration efficiency of the aeration pipe 12 is reduced, it is still in an aeration state. Therefore, it can cooperate with the flow of water, causing the sludge in the conical bucket 24 to be quickly discharged until the aeration pipe 12 returns to its original position.

[0030] It should be noted that in order to further reduce the probability of sludge entering the conical bucket 24, a cover plate is fixedly installed on the aeration tank 11 in the present invention. The cover plate is located above the aeration pipe 12 and cooperates with the conical bucket 24. When the conical bucket 24 is reset, the cover plate blocks the top opening of the conical bucket 24, further reducing the probability of activated sludge precipitation contacting the aeration pipe 12.

[0031] The provision of the conical bucket 24 in the present invention enables the aeration tube 12 to move downward. When oxygen is added to the activated sludge, the probability of the aeration tube 12 directly contacting the activated sludge is reduced. At the same time, the conical bucket 24 can be used to guide the movement direction of the bubbles and sludge, so that the bubbles are mixed with the water flow, thereby achieving rapid dispersion of the activated sludge, thereby enhancing the efficiency of oxygen addition to the activated sludge, and at the same time enhancing the degree of mixing of the activated sludge and the wastewater, thereby improving the efficiency of the activated sludge in purifying the wastewater.

[0032] As a preferred embodiment of the present invention, it further includes an air pressure control mechanism, which controls the lifting rod 21 by adjusting the air pressure in the installation tube 2; The air pressure control mechanism includes a control valve 3, a control plate 31 and a control rod 32; The control valve 3 is fixedly installed between the pipe rack 22 and the aeration pipe 12. A ventilation groove 33 is provided on the control valve 3. The control valve 3 is connected to the pipe rack 22 and the aeration pipe 12 through the ventilation groove 33. The control valve 3 is provided with an adjustment groove 34, in which a control plate 31 is slidably mounted. The control plate 31 is provided with a through hole. In an initial state, the through hole is misaligned with the vent groove 33. A control rod 32 is installed at the bottom of the control valve 3 , and the control rod 32 extends into the adjustment slot 34 . The control piece 31 is located on the movement path of the control rod 32 .

[0033] A diaphragm 35 is fixedly mounted on the bottom of the adjustment groove 34 . The diaphragm 35 extends between the control rod 32 and the control piece 31 . The diaphragm 35 is used to seal the adjustment groove 34 .

[0034] The conical bucket 24 is provided with an adaption groove 36 , and the aeration pipe 12 extends into the conical bucket 24 through the adaption groove 36 . The control rod 32 is L-shaped and fixedly connected to the conical bucket 24 .

[0035] In order to flexibly control the descent of the lifting rod 21, in the present invention, in the initial state, the through hole on the control plate 31 is misaligned with the ventilation groove 33, so that the channel cross-section of the compressed air flowing from the ventilation groove 33 into the aeration pipe 12 is reduced. At this time, the rate of compressed air flowing into the aeration pipe 12 is much lower than the rate at which the aeration pump 1 inputs the installation pipe 2. Therefore, the air pressure in the rodless cavity of the installation pipe 2 increases rapidly, prompting the lifting rod 21 and the pipe rack 22 to descend rapidly. When the bottom end of the conical bucket 24 contacts the activated sludge layer, the conical bucket 24 and the pipe rack 22 produce relative displacement under the obstruction of the activated sludge layer, thereby causing the control rod 32 to push the control plate 31 upward. As the control plate 31 rises, the overlapping area of the ventilation groove 33 and the through hole gradually increases, thereby causing the compressed air to flow into the aeration pipe 12 at a faster rate, thereby reducing the descending rate of the lifting rod 21, thereby reducing the excessive descending rate of the conical bucket 24, and reducing the probability of a large amount of activated sludge flowing into the conical bucket 24 and blocking the opening of the conical bucket 24.

[0036] As a preferred embodiment of the present invention, it further includes a sludge impact mechanism, which is installed on the lifting rod 21 and is used to enhance the aeration intensity; The sludge impact mechanism includes a blocking plate 4, a driving rod 41 and a sliding rod 42; A driving rod 41 and a sliding rod 42 are rotatably mounted on the lifting rod 21, and a plurality of reciprocating thread grooves are opened in the middle of the driving rod 41; The blocking plate 4 is slidably mounted on the pipe rack 22 , and a transmission groove 43 is provided on the blocking plate 4 . The driving rod 41 and the sliding rod 42 both extend into the transmission groove 43 . A nut 44 is fixedly mounted in the transmission groove 43 , and the blocking plate 4 is spirally driven by the nut 44 and the driving rod 41 .

[0037] An impact slot 45 is formed on the lifting rod 21 , and the driving rod 41 extends into the impact slot 45 . A pneumatic wheel 46 is fixedly mounted on the end of the driving rod 41 .

[0038] The width of the blocking plate 4 is greater than the width of the opening at the top of the conical bucket 24 . An adapter plate 5 is fixedly mounted on the aeration pipe 12 , and a sealing gasket 51 is fixedly mounted on the top of the conical bucket 24 .

[0039] During the aeration treatment process, as the conical bucket 24 gradually extends into the activated sludge, the activated sludge with certain flow properties flows toward the top opening of the conical bucket 24. When the aeration bubbles float upward, they impact the activated sludge, thereby replenishing oxygen for the activated sludge and wastewater, and causing the activated sludge to diffuse. When the fluidity of the activated sludge is poor, the performance of the activated sludge actively flowing toward the opening of the conical bucket 24 is weak. Therefore, a sludge impact mechanism is provided in the present invention. When the pipe rack 22 and the conical bucket 24 extend into the activated sludge, as the airflow in the driving rod 41 continues to flow, the air on the airflow path is The impeller 46 is driven unidirectionally by the airflow, thereby causing the pneumatic wheel 46 and the driving rod 41 to rotate unidirectionally. Since the driving rod 41 extends into the transmission groove 43 and is spirally transmitted with the sealing plate 4 through the nut 44, when the driving rod 41 rotates, the sealing plate 4 makes a linear reciprocating motion on the pipe rack 22. Since the sealing plate 4 is slidably mounted on the pipe rack 22, when the pipe rack 22 extends into the activated sludge, the sealing plate 4 is also immersed in the activated sludge. Therefore, when the sealing plate 4 makes a linear reciprocating motion on the pipe rack 22, the sealing plate 4 will push the sludge, thereby enhancing the lateral movement ability of the sludge, thereby causing the activated sludge to move toward the conical bucket. 24 opening, causing the activated sludge to come into contact with the rising bubbles, and with the continuous movement of the blocking plate 4, when the blocking plate 4 gradually moves to the top of the conical bucket 24 and completely blocks the opening above the conical bucket 24, the air pumped into the conical bucket 24 cannot be discharged. As the gas continues to flow in, the air pressure in the conical bucket 24 will increase. Under the action of the air pressure, the baffle 26 in the one-way groove 25 rotates outward, causing the one-way groove 25 to open, and the air flow flows from the one-way groove 25 to the activated sludge. Under the impact of the air flow, the activated sludge is quickly dispersed. It should be noted that the sealing gasket ring 51 installed at the top of the conical bucket 24 , and the adapter plate 5 fixedly installed on the aeration pipe 12 are all designed to cooperate with the conical bucket 24 and the blocking plate 4, so that when the blocking plate 4 blocks the top of the conical bucket 24, the conical bucket 24 can only vent air from the one-way groove 25, thereby facilitating the periodic concentrated airflow impact on the activated sludge on both sides of the aeration pipe 12, thereby allowing the activated sludge to be quickly dispersed in the wastewater. Then, when the blocking plate 4 and the opening of the conical bucket 24 are misaligned, the conical bucket 24 is in a top-open state at this time, and the airflow pumped out of the aeration pipe 12 floats into the wastewater in the form of dense small bubbles, thereby replenishing oxygen for the wastewater and the activated sludge dispersed in the wastewater.

[0040] like Figure 11 As shown, an aeration method for wastewater treatment comprises the following steps: S1: Control the aeration pump 1 to start, the aeration pump 1 draws air and pumps it into the installation pipe 2, causing the air pressure in the rodless cavity of the installation rod to increase, pushing the lifting rod 21 downward; S2: As the lifting rod 21 continues to descend, the bottom end of the conical bucket 24 contacts the sludge at the bottom of the aeration tank 11. As the conical bucket 24 extends into the sludge, relative movement occurs between the conical bucket 24 and the pipe rack 22. S3: The conical bucket 24 and the control rod 32 push the control plate 31 to move, causing the through groove and the ventilation groove 33 to gradually align. Compressed air enters the aeration pipe 12 and is ejected from the micropores on the aeration pipe 12 to form fine bubbles. S4: The compressed air flows and drives the pneumatic wheel 46 to rotate. Under the spiral transmission action of the driving rod 41 and the nut 44, the blocking plate 4 periodically blocks the conical bucket 24, causing the air pressure to be ejected from the one-way groove 25 and impact the sludge. S5: When aeration stops, the aeration pump 1 is turned off, and under the action of the lifting spring 23, the lifting rod 21 and the pipe rack 22 move upward, causing the aeration pipe 12 to separate from the sludge.

[0041] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An aeration device for wastewater treatment, comprising an aeration pump (1) and an aeration pipe (12), wherein the aeration pipe (12) is evenly arranged and installed in an aeration tank (11), the aeration pipe (12) being made of a microporous pipe, and the aeration pump (1) is used to pump compressed air into the aeration pipe (12); Its characteristics are: It also includes a lifting operation mechanism, which is installed in the aeration tank (11) and is used to control the aeration pipe (12) to rise and fall in the aeration tank (11); The lifting operation mechanism comprises a mounting pipe (2), a lifting rod (21) and a pipe rack (22); The installation pipe (2) is evenly installed in the aeration tank (11), the bottom end of the installation pipe (2) is open, and the aeration pump (1) is connected to the inner cavity of the installation pipe (2) through a pipeline; A lifting rod (21) is installed in a sliding seal inside the installation tube (2), and the top end of the lifting rod (21) is elastically connected to the installation tube (2) via a lifting spring (23); The pipe rack (22) is fixedly mounted on the bottom of the lifting rod (21), and the aeration pipes (12) are evenly mounted on the pipe rack (22). Both the lifting rod (21) and the pipe rack (22) are hollow structures.

2. The aeration device for wastewater treatment according to claim 1, characterized in that: A conical bucket (24) is installed on the pipe rack (22), and the conical bucket (24) corresponds to the aeration pipe (12) one by one. The aeration pipe (12) extends into the interior of the conical bucket (24), and the top end of the conical bucket (24) is opened.

3. The aeration device for wastewater treatment according to claim 2, characterized in that: The conical bucket (24) is provided with symmetrically distributed one-way grooves (25), a baffle (26) is hingedly installed in the one-way groove (25), a torsion spring (27) is fixedly installed in the one-way groove (25), and the torsion spring (27) is fixedly connected to the baffle (26).

4. The aeration device for wastewater treatment according to claim 3, characterized in that: It also includes an air pressure control mechanism, which controls the lifting and lowering of the lifting rod (21) by adjusting the air pressure in the installation tube (2); The air pressure control mechanism comprises a control valve (3), a control plate (31) and a control rod (32); The control valve (3) is fixedly installed between the pipe rack (22) and the aeration pipe (12); a ventilation groove (33) is provided on the control valve (3); and the control valve (3) is conductively connected to the pipe rack (22) and the aeration pipe (12) via the ventilation groove (33); The control valve (3) is provided with an adjustment groove (34), a control plate (31) is slidably mounted in the adjustment groove (34), a through hole is provided on the control plate (31), and in an initial state, the through hole is misaligned with the vent groove (33); A control rod (32) is installed at the bottom of the control valve (3), the control rod (32) extends into the adjustment groove (34), and the control plate (31) is located on the movement path of the control rod (32).

5. The aeration device for wastewater treatment according to claim 4, characterized in that: A diaphragm (35) is fixedly mounted on the bottom of the regulating groove (34), and the diaphragm (35) extends between the control rod (32) and the control plate (31). The diaphragm (35) is used to seal the regulating groove (34).

6. The aeration device for wastewater treatment according to claim 4, characterized in that: An adaption groove (36) is provided on the conical bucket (24), and the aeration pipe (12) extends into the interior of the conical bucket (24) through the adaption groove (36). The control rod (32) is designed to be L-shaped, and the control rod (32) is fixedly connected to the conical bucket (24).

7. An aeration device for wastewater treatment according to claim 3 or 6, characterized in that: It also includes a sludge impact mechanism, which is installed on the lifting rod (21) and is used to enhance aeration intensity; The sludge impact mechanism comprises a blocking plate (4), a driving rod (41) and a sliding rod (42); A driving rod (41) and a sliding rod (42) are rotatably mounted on the lifting rod (21), and a plurality of reciprocating thread grooves are formed in the middle of the driving rod (41); The blocking plate (4) is slidably mounted on the pipe rack (22). A transmission groove (43) is provided on the blocking plate (4). The driving rod (41) and the sliding rod (42) both extend into the transmission groove (43). A nut (44) is fixedly mounted in the transmission groove (43). The blocking plate (4) is spirally driven by the nut (44) and the driving rod (41).

8. The aeration device for wastewater treatment according to claim 7, characterized in that: An impact groove (45) is provided on the lifting rod (21), the driving rod (41) extends into the impact groove (45), and a pneumatic wheel (46) is fixedly mounted on the end of the driving rod (41).

9. The aeration device for wastewater treatment according to claim 8, characterized in that: The width of the blocking plate (4) is greater than the width of the opening at the top end of the conical bucket (24); an adapter plate (5) is fixedly mounted on the aeration pipe (12); and a sealing gasket (51) is fixedly mounted on the top end of the conical bucket (24).

10. An aeration method for wastewater treatment, characterized in that: The method uses the aeration device for wastewater treatment according to claim 9, and the method comprises the following steps: S1: Control the aeration pump (1) to start, the aeration pump (1) draws air and pumps it into the installation pipe (2), causing the air pressure in the rodless cavity of the installation rod to increase, pushing the lifting rod (21) downward; S2: As the lifting rod (21) continues to descend, the bottom end of the conical bucket (24) contacts the sludge at the bottom of the aeration tank (11), and as the conical bucket (24) extends into the sludge, relative movement occurs between the conical bucket (24) and the pipe rack (22); S3: The conical bucket (24) and the control rod (32) push the control plate (31) to move, causing the through groove and the ventilation groove (33) to gradually align, and compressed air enters the aeration pipe (12), and is ejected from the micropores opened on the aeration pipe (12), forming fine bubbles; S4: During the flow of compressed air, the pneumatic wheel (46) is driven to rotate. Under the spiral transmission action of the driving rod (41) and the nut (44), the blocking plate (4) periodically blocks the conical bucket (24), causing the air pressure to be ejected from the one-way groove (25) and impact the sludge; S5: When aeration stops, the aeration pump (1) is turned off, and under the action of the lifting spring (23), the lifting rod (21) and the pipe rack (22) move upward, causing the aeration pipe (12) to separate from the sludge.

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