A wastewater treatment system and method based on A / O process

Abstract

This invention discloses a wastewater treatment system and method based on the A / O process, belonging to the field of wastewater treatment technology. The proposed solution includes a wastewater tank divided into an anoxic and an aerobic section. An aeration head maintenance auxiliary mechanism is installed on the aerobic section. The invention uses a lifting component to drive a rotating component and an aeration support to rise. During the rising process, the lifting component can vibrate the aeration support by releasing and retracting a first rope, facilitating the removal of attached pollutants. Vibration can also be performed before the aeration support detaches from the wastewater surface, further aiding in pollutant removal and facilitating subsequent maintenance. After the aeration support rises to the edge of the wastewater tank, a second rope is taut. At this time, the rotating component rotates to release the second rope, causing the aeration support to flip and stand upright. This method allows the aeration support to be detached from the wastewater tank surface, eliminating the need for drainage before lowering it back into the wastewater tank for inspection and maintenance, thus facilitating practical maintenance operations.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment system and method based on the A / O process. Background Technology

[0002] The A / O wastewater treatment system is a highly efficient biological treatment process that effectively removes organic matter and nitrogen compounds from wastewater through alternating anoxic (A-stage) and aerobic (O-stage) treatment. In the anoxic stage, heterotrophic bacteria convert organic matter into ammonia nitrogen and initiate the denitrification process; while in the aerobic stage, nitrifying bacteria oxidize ammonia nitrogen into nitrate, and organic matter is further oxidized and decomposed. The A / O system has advantages such as high treatment efficiency, low cost, and small footprint, and is widely used in the treatment of municipal sewage and some industrial wastewater.

[0003] Aeration equipment is indispensable in A / O wastewater treatment systems. Currently, in order to improve the aeration effect, multiple aeration heads are usually fixedly installed at the bottom of the aerobic section of the tank. However, since the aeration heads and pipelines are fixed, it is not only difficult to uniformly aerate all parts of the treatment tank, but also, when maintenance, cleaning or replacement of the aeration heads is required, the water in the treatment tank must be drained first, and then professional personnel must treat the inside of the tank. This not only causes the wastewater treatment system to be suspended for a long time, but also makes the wastewater tank dirty, resulting in a harsh operating environment. In addition, since the wastewater treatment tank is large and the aeration heads are distributed in various positions at the bottom of the tank, when multiple aeration heads need to be maintained, cleaned or replaced, their positions need to be moved multiple times, which is inconvenient and time-consuming.

[0004] To address the aforementioned problems, this invention proposes a wastewater treatment system and method based on the A / O process. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the aeration heads and pipelines are fixedly installed, making it difficult to achieve uniform aeration throughout the treatment tank. Furthermore, when maintenance, cleaning, or replacement of the aeration heads is required, the water inside the treatment tank must be drained first, and then professional personnel must handle the internal treatment, resulting in a harsh operating environment. Additionally, the aeration heads are distributed at various locations on the bottom of the tank, making equipment transportation inconvenient and time-consuming. Therefore, this invention proposes a wastewater treatment system and method based on the A / O process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A wastewater treatment system based on the A / O process includes a wastewater tank, which is divided into an anoxic section and an aerobic section, and an aeration head maintenance auxiliary mechanism is installed on the aerobic section. The aerobic section of the wastewater tank is equipped with an aeration support and an air conveying assembly. The aeration support is provided with multiple adjustable aeration heads, which are connected to multiple ends of an aeration head retracting assembly. The aeration head retracting assembly is located in the middle of the aeration support, and a fixed aeration head is provided above the aeration head retracting assembly. The multiple ends of the air conveying assembly are connected to the fixed aeration head and the multiple adjustable aeration heads. The aeration head maintenance auxiliary mechanism includes a lifting component and a guiding component. A rotating component is connected to the lower part of the lifting component. One side of the rotating component is connected to the aeration bracket. A rope is provided on the rotating component. The bottom end of the rope is connected to the guiding component, which is located in the aerobic section.

[0007] Preferably, an installation plate is fixedly installed above the anoxic section of the wastewater tank, and a stirring structure is fixedly installed on the installation plate, with the stirring structure located in the anoxic section.

[0008] Preferably, the lifting assembly includes a barrel, which is fixedly installed above the aerobic section. A dual-shaft motor is fixedly installed inside the barrel, and two output shafts of the dual-shaft motor are fixedly connected to drums. First ropes are wound on the drums, and two first ropes pass through the barrel and pass over two pulleys respectively to be fixedly connected to the lifting plate. The two pulleys are fixedly installed above the aerobic section.

[0009] Preferably, the guide assembly includes two mounting parts, which are fixedly installed above the aerobic section. Guide rods are fixedly connected to the mounting parts, and assembly plates are fixedly connected to the bottom ends of the two guide rods. The assembly plates are located below the interior of the aerobic section, and the top of the assembly plates is fixedly connected to the rope. The guide rod is fitted with guide sleeves, and the two guide sleeves are fixedly installed at both ends of the lifting plate.

[0010] Preferably, the rotating assembly includes a rotating shaft, a rope reel is fixedly connected to the middle of the rotating shaft, the rope is wound around the rope reel, two connectors are fixedly connected to the rotating shaft, a connecting plate is fixedly connected to one end of the two connectors, and the connecting plate is fixedly connected to the aeration support. The rotating shaft is rotatably mounted in four second bearings, and the four second bearings are fixedly mounted on the lifting plate. A torsion spring is fixedly connected to one side of each second bearing. Each pair of torsion springs is fixedly connected to both sides of two connecting parts, and the torsion springs are sleeved on the outside of the rotating shaft.

[0011] Preferably, the air supply assembly includes two fixing members, which are respectively fixedly installed on the side wall of the aerobic section and below the aeration bracket. An aeration hose is installed on the two fixing members. One end of the aeration hose extending below the aeration bracket is connected to a fixed aeration head, and the portion of the aeration hose extending below the aeration bracket is connected to multiple diversion hoses.

[0012] Preferably, the aeration head retracting assembly includes a housing, the aeration hose is disposed through the housing, a first motor is fixedly installed inside the housing, the output shaft of the first motor is fixedly connected to a first bevel gear, a bevel gear ring is engaged on one side of the first bevel gear, the bevel gear ring is fixedly connected in a circular ring plate, and the circular ring plate is rotatably installed in the housing through two first bearings.

[0013] Preferably, a reel is fixedly connected to the outside of the annular plate, and one end of a plurality of second ropes is connected to the reel. The second ropes pass through the outer shell and overlap with rollers, which are rotatably connected to the reel.

[0014] Preferably, the adjustable aeration head includes a sliding rod, one end of a plurality of sliding rods is fixedly connected to the outer shell, and the other end of the sliding rod is fixedly connected to the aeration bracket. A sliding sleeve is slidably connected to the sliding rod, and a spring is fixedly connected to one side of the sliding sleeve. One end of the spring is fixedly connected to the aeration bracket. A movable seat is fixedly connected to the outside of the sliding sleeve. An adjustable aeration head is installed through the movable seat. The bottom of the adjustable aeration head is connected to the diversion hose. One side below the adjustable aeration head is fixedly connected to the other end of the second rope.

[0015] A wastewater treatment method based on an A / O process wastewater treatment system includes the following steps: S1. The denitrification and nitrification reactions of wastewater are completed through the microbial activities in the aerobic and anoxic zones. In the anoxic zone, the denitrification efficiency is accelerated by stirring the agitation structure. In the aerobic zone, the aeration hose is connected to an external aeration device, and air is supplied through the aeration device. Aeration is carried out by fixing the aeration head and adjusting the aeration head to discharge air, which is conducive to further wastewater treatment. S2. During the aeration process, the lifting component drives the rotating component and the aeration bracket to move up and down, so that the fixed aeration head and the adjustable aeration head move up and down to perform aeration. At the same time, the position of the aeration head can be adjusted by the aeration head retraction component in conjunction with the adjustable aeration head, thereby increasing the uniformity of aeration. S3. When maintenance is required, the drum is driven to rotate by the dual-axis motor. The drum winds up the first rope, and the first rope drives the lifting plate to move upward. The lifting plate rises through the rotating component and the connecting plate, which in turn raises the aeration support. At the same time, the rising rotating component drives the loose rope to extend upward. S4. When the aeration support moves upward to the edge of the sewage tank, the rope is taut, which causes the rope reel to rotate and release the rope. The rope reel drives the shaft to rotate, and the shaft drives the torsion spring to twist through the connector. The connector drives the aeration support to rotate through the connecting plate, so that the aeration support rotates to the vertical position. S5. Then, the first motor drives the first bevel gear and the bevel gear ring to drive the bevel gear ring to rotate. The bevel gear ring drives the ring plate to rotate, the ring plate drives the reel to rotate, and the reel drives the second rope to go around the roller for winding. The second rope drives the adjusting aeration head to move. The adjusting aeration head drives the spring to deform through the movable seat and the sliding sleeve, so that the adjusting aeration head is closed. The adjusting aeration head is closed at the fixed aeration head position. At this time, the maintenance and adjustment of the aeration head is performed. S6. After maintenance, the first motor is reversed to allow the reel to release the second rope. At the same time, the spring drives the sliding sleeve and movable seat to reset, allowing the aeration head to be reset. Then, the dual-shaft motor is reversed, and the drum releases the first rope. At this time, the torsion spring drives the connecting parts to rotate and reset, causing the aeration bracket to flip and reset. After the aeration bracket is successfully lowered to the bottom of the sewage tank, the aeration operation is restarted.

[0016] Compared with the prior art, the present invention provides a wastewater treatment system and method based on the A / O process, which has the following beneficial effects: 1. This wastewater treatment system and method based on the A / O process involves lifting components that drive rotating components and aeration supports to rise. During the ascent of the aeration supports, the lifting components can vibrate the aeration supports by releasing and retracting the first rope, thereby facilitating the removal of attached pollutants. Vibration can also be performed before the aeration supports detach from the wastewater surface, further enhancing pollutant removal and facilitating subsequent maintenance. After the aeration supports rise to the edge of the wastewater tank, the second rope tauts, at which point the rotating components release the second rope, causing the aeration supports to flip and stand upright. This method allows the aeration supports to be detached from the wastewater tank surface, eliminating the need for drainage before lowering them back into the wastewater tank for inspection and maintenance, thus simplifying actual maintenance operations.

[0017] 2. The wastewater treatment system and method based on the A / O process use a first motor to drive a first bevel gear and a bevel gear ring, which in turn drives a reel to rotate via a circular plate. The reel then winds up a second rope, causing the second rope to pull and adjust the movement of the aeration heads. This adjustment allows maintenance personnel to perform maintenance without frequently changing locations, making the entire maintenance process simpler, more convenient, and more efficient.

[0018] 3. This wastewater treatment system and method based on the A / O process utilizes a lifting component that can be linked to a rotating component to drive the aeration support up and down, allowing the adjustable and fixed aeration heads to perform aeration operations. Furthermore, the second rope of the aeration head retraction component can pull the adjustable aeration head to move. When the aeration head retraction component releases the second rope, the spring in the adjustable aeration head can reset it. This reciprocating motion allows for adjustment of the position of the adjustable aeration head, effectively improving the uniformity of aeration, achieving precise nutrient supply, accelerating nitrification and organic matter decomposition, and further improving wastewater treatment efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of the wastewater tank installation in a wastewater treatment system based on the A / O process proposed in this invention. Figure 2 This is a three-dimensional view of a wastewater tank in a wastewater treatment system based on the A / O process proposed in this invention. Figure 3 This is a perspective view of the connection between the aeration support and the sewage tank in a wastewater treatment system based on the A / O process proposed in this invention. Figure 4 This is a perspective view of the connection between the aeration support and the air conveying component in a wastewater treatment system based on the A / O process proposed in this invention. Figure 5 This is a perspective view of the connection between the lifting component and the rotating component in a wastewater treatment system based on the A / O process proposed in this invention. Figure 6 This is a perspective view of the lifting component of a wastewater treatment system based on the A / O process proposed in this invention. Figure 7 This is a perspective view of the rotating component cross-section of a wastewater treatment system based on the A / O process proposed in this invention. Figure 8 This is a three-dimensional view of the gas transmission component of a wastewater treatment system based on the A / O process proposed in this invention; Figure 9 This is a perspective view of the connection between the aeration support and the adjustable aeration head in a wastewater treatment system based on the A / O process proposed in this invention. Figure 10 In this invention Figure 9 Enlarged view of point A; Figure 11 This is a three-dimensional view of the cross-section of the aeration head gathering component of a wastewater treatment system based on the A / O process proposed in this invention. Figure 12 In this invention Figure 11 Enlarged view of point B; Figure 13This is a perspective view of the outer shell of a wastewater treatment system based on the A / O process proposed in this invention.

[0020] In the diagram: 100, Sewage tank; 101, Mounting plate; 102, Mixing structure; 103, Aeration support; 104, Fixed aeration head; 105, Air supply assembly; 1051, Aeration hose; 1052, Fixing component; 1053, Diverting hose; 106, Adjustable aeration head; 1061, Slide rod; 1062, Sliding sleeve; 1063, Movable seat; 1064, Spring; 1065, Adjustable aeration head; 107, Aeration head retraction assembly; 1071, First motor; 1072, First bevel gear; 1073, Outer shell; 1074, Bevel gear ring; 1075, Circular ring plate; 1076, Winding reel; 1077. 1078. Roller; 1079. Second rope; 1070. First bearing; 201. Aerator head maintenance auxiliary mechanism; 201. Lifting assembly; 2011. Machine barrel; 2012. Dual-shaft motor; 2013. Drum; 2014. Pulley; 2015. First rope; 2016. Lifting plate; 202. Rotating assembly; 2021. Rotating shaft; 2022. Connecting piece; 2023. Second bearing; 2024. Rope reel; 2025. Torsion spring; 2026. Connecting plate; 203. Guide assembly; 2031. Assembly plate; 2032. Guide rod; 2033. Mounting piece; 2034. Guide sleeve; 204. Rope. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Example 1: Refer to Figures 1-9 and Figure 11 A wastewater treatment system based on the A / O process includes a wastewater tank 100, which is divided into an anoxic section and an aerobic section. An installation plate 101 is fixedly installed above the anoxic section of the wastewater tank 100, and a stirring structure 102 is fixedly installed on the installation plate 101. The stirring structure 102 can play a stirring role, thereby improving the denitrification reaction rate. The stirring structure 102 is located in the anoxic section, and an aeration head maintenance auxiliary mechanism 200 is installed on the aerobic section. The aerobic section of the wastewater tank 100 is equipped with an aeration support 103 and an air supply assembly 105. The air supply assembly 105 includes two fixing members 1052, which are respectively fixedly installed on the side wall of the aerobic section and below the aeration support 103. An aeration hose 1051 is installed on each of the two fixing members 1052. The hose 1051, through a connector at its top, can function as an external aeration device, ensuring smooth aeration operation. Furthermore, the extensibility of the aeration hose 1051 allows the aeration support 103 to move smoothly up and down. One end of the aeration hose 1051 extending below the aeration support 103 is connected to a fixed aeration head 104. The aeration hose 1051 extends into the aeration section... The lower part of the air support 103 is connected to multiple diversion hoses 1053, which can divert air supply to the adjustable aeration head 1065 to discharge air outward, increasing the aeration points. Moreover, the diversion hoses 1053 are telescopic, allowing the adjustable aeration head 1065 to be adjusted. Multiple adjustable aeration heads 106 are provided in the aeration support 103. The multiple adjustable aeration heads 106 are connected to multiple ends of the aeration head gathering assembly 107, and the aeration head gathering assembly 107 is located in the middle of the aeration support 103. A fixed aeration head 104 is provided above the aeration head gathering assembly 107. Multiple ends of the air supply assembly 105 are connected to the fixed aeration head 104 and the multiple adjustable aeration heads 106. The aeration head maintenance auxiliary mechanism 200 includes a lifting component 201 and a guiding component 203. The lifting component 201 includes a barrel 2011, which is fixedly installed above the aerobic section. A dual-shaft motor 2012 is fixedly installed inside the barrel 2011. The dual-shaft motor 2012 drives the drum 2013 to wind up the first rope 2015, which in turn drives the lifting plate 2016 to rise, thereby pulling the aeration support 103 upwards above the sewage surface for subsequent inspection and maintenance. The two output shafts of the dual-shaft motor 2012 are fixedly connected to the drum 2013. The first rope 2015 is wound on the drum 2013. The two first ropes 2015 pass through the barrel 2011 and pass over two pulleys 2014 and the lifting plate 2016 respectively. 16. A fixed connection is established. The pulley 2014 guides the first rope 2015 and reduces its frictional resistance. Two pulleys 2014 are fixedly installed above the aerobic section. A rotating component 202 is connected below the lifting assembly 201. The rotating component 202 includes a rotating shaft 2021. A rope reel 2024 is fixedly connected to the middle of the rotating shaft 2021. The rope 204 is wound around the rope reel 2024, which partially winds up the rope 204. When the aeration support 103 is rotated horizontally, the rope 204 is no longer wound up through the rope reel 2024, leaving a section of the rope 204 unwound to prevent excessive rotation of the aeration support 103 when it is lifted. The rotating shaft 2021 is fixedly connected to the rope reel 2024. The aeration support 103 has two connecting parts 2022, one end of which is fixedly connected to a connecting plate 2026. The connecting plate 2026 is fixedly connected to the aeration support 103. A rotating shaft 2021 is rotatably mounted in four second bearings 2023. The rotating shaft 2021 can rotate stably through the second bearings 2023, allowing the connecting parts 2022 and the connecting plate 2026 to rotate stably, thus ensuring the smooth flipping motion of the aeration support 103. The four second bearings 2023 are fixedly mounted on a lifting plate 2016. A torsion spring 2025 is fixedly connected to one side of each second bearing 2023. The torque of the torsion spring 2025 can drive the connecting parts 2022 to rotate, thereby allowing the aeration support 103 to smoothly flip and reset. The aeration support 103 is connected to the sewage tank 100. The bottom of the pool remains parallel to ensure smooth aeration. Two torsion springs 2025 are fixedly connected to both sides of two connecting pieces 2022. The torsion springs 2025 are sleeved on the outside of the rotating shaft 2021. One side of the rotating assembly 202 is connected to the aeration bracket 103. A rope 204 is provided on the rotating assembly 202, and the bottom end of the rope 204 is connected to the guide assembly 203. The guide assembly 203 includes two mounting pieces 2033, which are fixedly installed above the aerobic section. Guide rods 2032 are fixedly connected to the mounting pieces 2033, and assembly plates 2031 are fixedly connected to the bottom ends of the two guide rods 2032. The assembly plates 2031 are located below the interior of the aerobic section, and their tops are fixedly connected to the rope 204.A guide sleeve 2034 is fitted onto the guide rod 2032. The guide sleeve 2034 can slide smoothly up and down along the guide rod 2032, thereby allowing the lifting plate 2016 to move smoothly up and down. Two guide sleeves 2034 are fixedly installed at both ends of the lifting plate 2016. The guide assembly 203 is located in the aerobic section.

[0024] In this embodiment: the dual-axis motor 2012 drives the drum 2013 to rotate, the drum 2013 winds up the first rope 2015, the first rope 2015 drives the lifting plate 2016 to move, the lifting plate 2016 drives the rope belt 204 to extend, and the lifting plate 2016 drives the rotating component 202 and the aeration bracket 103 to rise. During the rising process of the aeration bracket 103, the forward and reverse motion of the dual-axis motor 2012 can cause the drum 2013 to wind up and unwind the first rope 2015, thereby realizing the shaking of the aeration bracket 103, which facilitates the removal of attached pollutants. At the same time, it can also... 3. Shaking the aeration support 103 while it is still above the sewage surface helps remove pollutants and facilitates subsequent maintenance. When the aeration support 103 rises to the edge of the sewage tank 100, the second rope 1078 is taut. At this time, the rope reel 2024 rotates to release the second rope 1078. The rope reel 2024 drives the rotating shaft 2021 and the connecting piece 2022 to rotate, causing the connecting plate 2026 to rotate the aeration support 103 to stand upright. In this way, the aeration support 103 can be removed from the surface of the sewage tank 100 without draining the water before being lowered into the sewage tank 100 for inspection and maintenance, thus facilitating actual inspection and maintenance work.

[0025] Example 2: Refer to Figures 10-13A wastewater treatment system based on the A / O process includes an aeration head retracting assembly 107. The aeration head retracting assembly 107 includes a housing 1073, with an aeration hose 1051 penetrating through the housing 1073. A first motor 1071 is fixedly installed inside the housing 1073. The output shaft of the first motor 1071 is fixedly connected to a first bevel gear 1072. One side of the first bevel gear 1072 engages with a bevel gear ring 1074. Power transmission is achieved through the interaction between the first bevel gear 1072 and the bevel gear ring 1074, enabling the bevel gear ring 1074 to drive a circular ring plate 1075 and a reel 1076 to rotate. The reel 1076 can smoothly wind up a second rope 1078. The bevel gear ring 1074 is fixedly connected within the circular ring plate 1075. The ring plate 1075 is rotatably mounted in the housing 1073 via two first bearings 1079. The ring plate 1075 can rotate stably via the first bearings 1079, thereby allowing the reel 1076 to rotate smoothly. The reel 1076 is fixedly connected to the outside of the ring plate 1075. One end of a plurality of second ropes 1078 is connected to the reel 1076. The second ropes 1078 are arranged through the housing 1073. The second ropes 1078 overlap with the rollers 1077. The rollers 1077 can guide the second ropes 1078, allowing the second ropes 1078 to smoothly turn and be wound onto the reel 1076. The rollers 1077 can reduce the frictional resistance with the second ropes 1078. The rollers 1077 are rotatably connected to the reel 1076. The adjustable aeration head 106 includes a slide rod 1061. One end of each slide rod 1061 is fixedly connected to the outer casing 1073, and the other end of each slide rod 1061 is fixedly connected to the aeration bracket 103. A sliding sleeve 1062 is slidably connected to the slide rod 1061. The sliding sleeve 1062 can slide smoothly on the slide rod 1061, allowing the movable seat 1063 and the adjustable aeration head 1065 to be adjusted smoothly. A spring 1064 is fixedly connected to one side of the sliding sleeve 1062. The spring 1064 drives the sliding sleeve 1062 to return to its original position, allowing the adjustable aeration head 1065 to be adjusted smoothly. The spring 1064 is fixedly connected to the aeration bracket 103 at one end, and a movable seat 1063 is fixedly connected to the outside of the sliding sleeve 1062. An adjustable aeration head 1065 is installed through the movable seat 1063. The adjustable aeration head 1065 is bent and passes through the movable seat 1063, which can avoid the adjustable aeration head 1065 directly passing through the sliding sleeve 1062 and the sliding rod 1061 and affecting the adjustment operation. The bottom of the adjustable aeration head 1065 is connected to the diversion hose 1053, and one side below the adjustable aeration head 1065 is fixedly connected to the other end of the second rope 1078.

[0026] In this embodiment: the first motor 1071 drives the first bevel gear 1072 and the bevel gear ring 1074 to drive the bevel gear ring 1074 to rotate the reel 1076 through the annular plate 1075. The reel 1076 winds up the second rope 1078, causing the second rope 1078 to pull the adjusting aeration head 1065 to move. The adjusting aeration head 1065 slides on the slide rod 1061 through the movable seat 1063 and the sliding sleeve 1062, causing the adjusting aeration heads 1065 to converge and gather together. This eliminates the need for maintenance personnel to frequently change positions for inspection and maintenance, making the entire inspection and maintenance operation simpler and more convenient, and improving maintenance efficiency.

[0027] Example 3: Reference Figures 3-6 and Figure 9 A wastewater treatment system based on the A / O process includes an aeration head maintenance auxiliary mechanism 200. The aeration head maintenance auxiliary mechanism 200 includes a lifting component 201 and a guiding component 203. A rotating component 202 is connected to the lower part of the lifting component 201. One side of the rotating component 202 is connected to the aeration support 103. A rope 204 is provided on the rotating component 202. The bottom end of the rope 204 is connected to the guiding component 203. The guiding component 203 is located in the aerobic section. The aerobic section of the wastewater tank 100 is equipped with an aeration support 103 and an air supply assembly 105. The aeration support 103 is provided with multiple adjustable aeration heads 106. The multiple adjustable aeration heads 106 are connected to multiple ends of the aeration head gathering assembly 107, and the aeration head gathering assembly 107 is located in the middle of the aeration support 103. A fixed aeration head 104 is provided above the aeration head gathering assembly 107. The multiple ends of the air supply assembly 105 are connected to the fixed aeration head 104 and the multiple adjustable aeration heads 106.

[0028] In this embodiment: the lifting component 201 can be linked with the rotating component 202 to drive the aeration support 103 to move up and down, so that the adjustable aeration head 1065 and the fixed aeration head 104 can perform aeration operations up and down. Next, the second rope 1078 of the aeration head retracting component 107 can pull the adjustable aeration head 106 to move. When the aeration head retracting component 107 releases the second rope 1078, the spring 1064 in the adjustable aeration head 106 can drive the adjustable aeration head 1065 to reset. By repeating this process, the position of the adjustable aeration head 1065 can be adjusted, thereby effectively improving the uniformity of aeration, achieving precise nutrient supply, and accelerating nitrification and organic matter decomposition, further improving the efficiency of wastewater treatment.

[0029] A wastewater treatment method based on an A / O process wastewater treatment system includes the following steps: S1. The denitrification and nitrification reactions of wastewater are completed through the microbial activities in the aerobic and anoxic zones. In the anoxic zone, the denitrification efficiency is accelerated by stirring the stirring structure 102. In the aerobic zone, the aeration hose 1051 is connected to an external aeration device, and air is supplied through the aeration device. The aeration operation is carried out by discharging through the fixed aeration head 104 and the adjustable aeration head 1065, which is conducive to the further treatment of wastewater. S2. During the aeration process, the lifting component 201 drives the rotating component 202 and the aeration bracket 103 to move up and down, so that the fixed aeration head 104 and the adjustable aeration head 1065 can perform aeration up and down. At the same time, the position of the adjustable aeration head 1065 can be adjusted by the aeration head retracting component 107 in conjunction with the adjustable aeration head 106, thereby increasing the uniformity of aeration. S3. When maintenance is required, the dual-axis motor 2012 drives the drum 2013 to rotate. The drum 2013 winds up the first rope 2015. The first rope 2015 drives the lifting plate 2016 to move upward, so that the lifting plate 2016 rises through the rotating component 202 and the connecting plate 2026, which in turn causes the aeration bracket 103 to rise. At the same time, the rising rotating component 202 drives the loose rope 204 to extend upward. S4. When the aeration support 103 moves upward to the edge of the sewage tank 100, the rope 204 becomes taut, which causes the rope reel 2024 to rotate and release the rope 204. The rope reel 2024 then drives the rotating shaft 2021 to rotate. The rotating shaft 2021 drives the torsion spring 2025 to twist through the connector 2022, and the connector 2022 drives the aeration support 103 to rotate through the connecting plate 2026, so that the aeration support 103 rotates to a vertical position. S5. Then, the first motor 1071 drives the first bevel gear 1072 and the bevel gear ring 1074 to drive the transmission. The bevel gear ring 1074 drives the ring plate 1075 to rotate. The ring plate 1075 drives the reel 1076 to rotate. The reel 1076 drives the second rope 1078 to pass around the roller 1077 for winding. The second rope 1078 drives the adjusting aeration head 1065 to move. The adjusting aeration head 1065 drives the spring 1064 to deform through the movable seat 1063 and the sliding sleeve 1062, so that the adjusting aeration head 1065 is retracted. The adjusting aeration head 1065 is retracted to the fixed aeration head 104 position. At this time, the maintenance and adjustment of the aeration head 1065 is performed. S6. After maintenance, the first motor 1071 reverses, causing the reel 1076 to reverse and release the second rope 1078. At the same time, the spring 1064 drives the sliding sleeve 1062 and the movable seat 1063 to reset, so that the adjusting aeration head 1065 is reset. Then, the dual-shaft motor 2012 reverses, and the drum 2013 releases the first rope 2015. At this time, the torsion spring 2025 drives the connecting piece 2022 to rotate and reset, so that the aeration bracket 103 flips and resets. After the aeration bracket 103 is smoothly lowered to the bottom of the sewage tank 100, the aeration operation is restarted.

[0030] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wastewater treatment system based on the A / O process, comprising a wastewater tank (100), characterized in that, The wastewater tank (100) is divided into an anoxic section and an aerobic section, and the aerobic section is equipped with an aeration head maintenance auxiliary mechanism (200). The aerobic section of the wastewater tank (100) is equipped with an aeration support (103) and an air conveying assembly (105). The aeration support (103) is provided with multiple adjustable aeration heads (106). The multiple adjustable aeration heads (106) are connected to multiple ends of the aeration head gathering assembly (107). The aeration head gathering assembly (107) is located in the middle of the aeration support (103). A fixed aeration head (104) is provided above the aeration head gathering assembly (107). The multiple ends of the air conveying assembly (105) are connected to the fixed aeration head (104) and the multiple adjustable aeration heads (106). The aeration head maintenance auxiliary mechanism (200) includes a lifting component (201) and a guiding component (203). A rotating component (202) is connected to the lower part of the lifting component (201). One side of the rotating component (202) is connected to the aeration bracket (103). A rope (204) is provided on the rotating component (202). The bottom end of the rope (204) is connected to the guiding component (203). The guiding component (203) is located in the aerobic section. The rotating assembly (202) includes a rotating shaft (2021), a rope disc (2024) is fixedly connected to the middle of the rotating shaft (2021), the rope (204) is wound around the rope disc (2024), two connecting pieces (2022) are fixedly connected to the rotating shaft (2021), a connecting plate (2026) is fixedly connected to one end of the two connecting pieces (2022), the connecting plate (2026) is fixedly connected to the aeration bracket (103), the rotating shaft (2021) is rotatably installed in four second bearings (2023), a torsion spring (2025) is fixedly connected to one side of the second bearing (2023), and each pair of torsion springs (2025) is fixedly connected to both sides of the two connecting pieces (2022), and the torsion springs (2025) are sleeved on the outside of the rotating shaft (2021); The aeration head gathering assembly (107) includes a housing (1073), inside which a first motor (1071) is fixedly installed. The output shaft of the first motor (1071) is fixedly connected to a first bevel gear (1072). One side of the first bevel gear (1072) is engaged with a bevel gear ring (1074). The bevel gear ring (1074) is fixedly connected in a circular ring plate (1075). The circular ring plate (1075) is rotatably installed in the housing (1073) through two first bearings (1079). A reel (1076) is fixedly connected to the outside of the circular ring plate (1075). One end of a plurality of second ropes (1078) is connected to the reel (1076). The second ropes (1078) pass through the housing (1073) and overlap with rollers (1077). The rollers (1077) are rotatably connected to the reel (1076).

2. The wastewater treatment system based on the A / O process according to claim 1, characterized in that, An installation plate (101) is fixedly installed above the anoxic section of the sewage tank (100), and a stirring structure (102) is fixedly installed on the installation plate (101). The stirring structure (102) is located in the anoxic section.

3. A wastewater treatment system based on the A / O process according to claim 2, characterized in that, The lifting assembly (201) includes a barrel (2011), which is fixedly installed above the aerobic section. A dual-shaft motor (2012) is fixedly installed inside the barrel (2011). Both output shafts of the dual-shaft motor (2012) are fixedly connected to a drum (2013). A first rope (2015) is wound on the drum (2013). Two first ropes (2015) pass through the barrel (2011) and pass around two pulleys (2014) respectively to be fixedly connected to the lifting plate (2016). Four second bearings (2023) are fixedly installed on the lifting plate (2016). The two pulleys (2014) are fixedly installed above the aerobic section.

4. A wastewater treatment system based on the A / O process according to claim 3, characterized in that, The guide assembly (203) includes two mounting parts (2033), which are fixedly installed above the aerobic section. Guide rods (2032) are fixedly connected to the mounting parts (2033), and assembly plates (2031) are fixedly connected to the bottom ends of the two guide rods (2032). The assembly plates (2031) are located below the interior of the aerobic section, and the top of the assembly plates (2031) is fixedly connected to the rope (204). The guide rod (2032) is fitted with a guide sleeve (2034), and the two guide sleeves (2034) are fixedly installed at both ends of the lifting plate (2016).

5. A wastewater treatment system based on the A / O process according to claim 4, characterized in that, The gas delivery assembly (105) includes two fixing members (1052), which are respectively fixedly installed on the side wall of the aerobic section and below the aeration support (103). An aeration hose (1051) is installed on the two fixing members (1052). The aeration hose (1051) is installed through the outer shell (1073). One end of the aeration hose (1051) extending below the aeration support (103) is connected to the fixed aeration head (104), and the part of the aeration hose (1051) extending below the aeration support (103) is connected to multiple diversion hoses (1053).

6. A wastewater treatment system based on the A / O process according to claim 5, characterized in that, The adjustable aeration head (106) includes a slide rod (1061), one end of a plurality of slide rods (1061) is fixedly connected to the outer shell (1073), and the other end of the slide rod (1061) is fixedly connected to the aeration bracket (103). A sliding sleeve (1062) is slidably connected on the slide rod (1061), and a spring (1064) is fixedly connected to one side of the sliding sleeve (1062). One end of the spring (1064) is fixedly connected to the aeration bracket (103). The sliding sleeve (1062) is fixedly connected to a movable seat (1063), and an adjustable aeration head (1065) is installed through the movable seat (1063). The bottom of the adjustable aeration head (1065) is connected to the diversion hose (1053), and one side below the adjustable aeration head (1065) is fixedly connected to the other end of the second rope (1078).

7. A wastewater treatment method for a wastewater treatment system based on an A / O process according to claim 6, characterized in that, Includes the following steps: S1. The denitrification and nitrification reaction of wastewater are completed by the microbial activities in the aerobic and anoxic sections. In the anoxic section, the denitrification efficiency is accelerated by stirring the stirring structure (102). In the aerobic section, the aeration hose (1051) is connected to an aeration device, and air is delivered through the aeration device. The aeration operation is carried out by discharging the air through the fixed aeration head (104) and the adjustable aeration head (1065), which is conducive to the further treatment of wastewater. S2. During the aeration process, the lifting component (201) drives the rotating component (202) and the aeration bracket (103) to move up and down, so that the fixed aeration head (104) and the adjustable aeration head (1065) can perform aeration up and down. At the same time, the position of the adjustable aeration head (1065) can be adjusted by the aeration head retracting component (107) in conjunction with the adjustable aeration head (106), thereby increasing the uniformity of aeration. S3. When maintenance is required, the drum (2013) is driven to rotate by the dual-axis motor (2012). The drum (2013) winds up the first rope (2015). The first rope (2015) drives the lifting plate (2016) to move upward, so that the lifting plate (2016) rises through the rotating component (202) and the connecting plate (2026), which in turn causes the aeration bracket (103) to rise. At the same time, the rising of the rotating component (202) drives the loose rope (204) to extend upward. S4. When the aeration bracket (103) moves upward to the edge of the sewage tank (100), the rope (204) is taut, which causes the rope disc (2024) to rotate and release the rope (204). The rope disc (2024) drives the rotating shaft (2021) to rotate. The rotating shaft (2021) drives the torsion spring (2025) to twist through the connector (2022). The connector (2022) drives the aeration bracket (103) to rotate through the connecting plate (2026), so that the aeration bracket (103) rotates to the vertical position. S5. Then, the first motor (1071) drives the first bevel gear (1072) and the bevel gear ring (1074) to drive the bevel gear ring (1074) to rotate. The bevel gear ring (1074) drives the ring plate (1075) to rotate. The ring plate (1075) drives the reel (1076) to rotate. The reel (1076) drives the second rope (1078) to go around the roller (1077) for winding. The second rope (1078) drives the adjusting aeration head (1065) to move. The adjusting aeration head (1065) drives the spring (1064) to deform through the movable seat (1063) and the sliding sleeve (1062), so that the adjusting aeration head (1065) is gathered together. The adjusting aeration head (1065) is gathered at the fixed aeration head (104) position. At this time, the operation of maintaining the adjusting aeration head (1065) is carried out. S6. After maintenance, the first motor (1071) is reversed, causing the reel (1076) to reverse and release the second rope (1078). At the same time, the spring (1064) drives the sliding sleeve (1062) and the movable seat (1063) to reset, so that the aeration head (1065) is reset. Then the dual-shaft motor (2012) reverses, and the drum (2013) releases the first rope (2015). At this time, the torsion spring (2025) drives the connecting piece (2022) to rotate and reset, so that the aeration bracket (103) is flipped and reset. After the aeration bracket (103) is successfully lowered to the bottom of the sewage tank (100), the aeration operation is restarted.

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