Sewage treatment equipment for environmental pollution control

Abstract

The invention discloses sewage treatment equipment for environmental pollution abatement, which comprises an aeration tank, a plurality of longitudinal conveying assemblies for coaxially conveying oxygen into the aeration tank at different heights are arranged in the aeration tank, and an oxygen supply assembly for continuously and unidirectionally conveying oxygen into the longitudinal conveying assembly is arranged on the side surface of the longitudinal conveying assembly; the longitudinal conveying assembly comprises an extension plate arranged on a rotating shaft of the longitudinal conveying assembly, the outer ring of the oxygen supply assembly is fixedly connected with a sealing box, the side, close to the extension plate, of the sealing box is provided with an opening, a partition plate dividing the interior of the sealing box into two independent spaces is arranged in the sealing box, an air spraying opening is formed in the outer ring of the sealing box, and a sliding block limited on the sealing box is arranged in the air spraying opening. Springs are fixedly connected between the sliding blocks and the partition plate, and a trigger assembly is arranged at the bottom of the aeration tank. The device has the advantages of blast aeration and mechanical aeration, reduces the power consumption caused by overcoming water depth resistance and pipeline resistance when oxygen is conveyed to the bottom of the aeration tank, and expands the range of conveying the oxygen into the aeration tank.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device for environmental pollution control. Background Technology

[0002] Aeration tanks are widely recognized as energy hogs in wastewater treatment plants, typically accounting for 50%-70% of the plant's direct electricity consumption. The core reason for the high energy consumption of aerobic tanks can be attributed to the following: to meet the needs of microorganisms, blower aeration is usually used, which requires forcibly injecting a large amount of oxygen into the water. To overcome water depth resistance and pipe resistance, the blower needs to do a lot of useless work, resulting in huge energy waste. To solve the problem of high electricity consumption in aeration tanks, mechanical aeration has emerged, which involves raising the water to contact with the air. However, mechanical aeration can only affect the surface water and has a poor effect on aeration of the bottom of the aeration tank.

[0003] A search revealed Chinese invention patent application number CN202310932913.6, which discloses an aeration device and aeration method for sewage treatment. The aeration pipe two, which is rotatably connected to the lifting plate, also begins to move up and down. During the movement, the outer wall of the rotating column slides relative to the groove two and the protrusion two. Under this action, the aeration pipe two begins to rotate. The aeration pipe two can move up and down in the sewage and can also rotate on its own. Therefore, the oxygen sprayed from the aeration pipe two can come into contact with the upper layer of water, so that the oxygen can be integrated into more sewage.

[0004] Although the above-mentioned device can drive the aeration pipe to rise and fall, and can deliver oxygen to different heights in the aeration tank, the power consumption when delivering oxygen to the bottom of the aeration tank remains unchanged. It is difficult to combine the advantages of blower aeration and mechanical aeration, reduce the power consumption when delivering oxygen to the bottom of the aeration tank due to overcoming water depth resistance and pipe resistance, and at the same time expand the range of oxygen delivered into the aeration tank. Summary of the Invention

[0005] One objective of this invention is to provide a wastewater treatment device for environmental pollution control. This invention combines the advantages of both blower aeration and mechanical aeration, reduces the power consumption required to overcome water depth resistance and pipeline resistance when delivering oxygen to the bottom of the aeration tank, and expands the range of oxygen delivery within the aeration tank.

[0006] According to an embodiment of the present invention, a wastewater treatment device for environmental pollution control includes an aeration tank, wherein a plurality of longitudinal conveying components are provided in the aeration tank for conveying oxygen at different heights in the aeration tank in the same direction, and an oxygen supply component is provided on the side of the longitudinal conveying components for continuously conveying oxygen to its interior in one direction. The longitudinal conveying assembly includes an extension plate mounted on its rotating shaft. A sealed box is fixedly connected to the outer ring of the oxygen supply assembly. The sealed box has an opening on the side near the extension plate. Inside the sealed box, there is a partition plate that divides its interior into two independent spaces. An air jet is opened on the outer ring of the sealed box. A slider is fixedly positioned on the sealed box inside the air jet. A spring is fixedly connected between the slider and the partition plate. At the bottom of the aeration tank, there is a triggering component that squeezes the outer slider when the sealed box moves to the bottom. After the slider is squeezed into the interior of the sealed box by the triggering component, it no longer blocks the air jet.

[0007] Furthermore, the included angle between adjacent sealing boxes is less than 1°, the slider extends to the outside of the sealing box, and one end of the slider has a trapezoidal cross-section.

[0008] Furthermore, an annular sealing frame is fixedly connected to the side of the partition plate away from the extension plate. The annular sealing frame and the partition plate are an integral structure, and the spring extends into the annular sealing frame.

[0009] Furthermore, the side of the extension plate opposite to the rotation direction of the sealing box is an inclined surface, and the cross-section of the extension plate is rectangular.

[0010] Furthermore, the bottom of the sealed box is slidably connected to an elastic arc plate extending into its bottom opening, and a connecting rod is fixedly connected between the elastic arc plate and the partition plate. Multiple round rods are fixedly connected to the side of the elastic arc plate away from the connecting rod.

[0011] Furthermore, the oxygen supply component includes a bent pipe located on the side of the sealed box. The interface between the bent pipe and the sealed box is located between the partition plate and the slider. A one-way valve is provided at one end of the bent pipe near the sealed box. A transverse pipe with both ends closed is sleeved on the rotating shaft of the longitudinal conveying component. An air inlet pipe extending to the axis of the longitudinal conveying component is provided on one side of the aeration tank. The air inlet pipe is connected to the transverse pipe, and one end of the bent pipe is connected to the transverse pipe.

[0012] Furthermore, the triggering component includes a protrusion fixed to the bottom of the aeration tank, and guide blocks with arc-shaped tops are fixedly connected to both sides of the protrusion. The height of the top of the guide block towards the protrusion gradually decreases, and a receiving cavity for accommodating the pipe is opened on the top of the guide block.

[0013] Furthermore, the surface of the triggering component is provided with a scraper for removing sludge from its surface, and a limiting frame for limiting the scraper from the top is fixedly connected to the side of the aeration tank. A driver is connected between the lower half of the scraper and the aeration tank, and the driver is an electric cylinder.

[0014] Furthermore, the scraper includes an inclined region, an elastic region, and a baffle region. The inclined region is located at the bottom of the scraper, the elastic region is located above the inclined region, and the baffle region is fixed to the upper surface of the inclined region. A notch adapted to the receiving cavity is opened on the inclined region, and the notch penetrates the baffle region.

[0015] Furthermore, a horizontal plate is fixedly connected to the top of the aeration tank, and a motor is welded to the top of the horizontal plate. A belt is connected between the output end of the motor and the shaft of the longitudinal conveying component.

[0016] The beneficial effects of this invention are: This invention, through its longitudinal conveying component, reduces the power consumption caused by overcoming water depth resistance when filling the aeration tank with oxygen, since oxygen does not need to overcome water depth resistance when being transported into the sealed box. It achieves the purpose of transporting oxygen to the bottom of the aeration tank by moving it at different heights within the aeration tank, combining the advantages of both blower aeration and mechanical aeration. It reduces the power consumption caused by overcoming water depth resistance and pipeline resistance when transporting oxygen to the bottom of the aeration tank, while expanding the range of oxygen transported within the aeration tank.

[0017] This invention utilizes a sealed box, partition plates, and openings. Wastewater at the bottom of the aeration tank, which is difficult to contact with oxygen, enters the wastewater transfer space through the opening in the inner ring of the sealed box. Driven by the sealed box, the wastewater gradually rises until it reaches its highest point and is exposed above the wastewater. As the sealed box moves from its pivot point to its highest point, the partition plates gradually move above the wastewater transfer space. The weight of the partition plates pushes the wastewater out of the transfer space, effectively conveying the wastewater from the bottom of the aeration tank into the air above. This allows the wastewater from the bottom of the aeration tank to move to the upper part and multiple locations at the top of the aeration tank, fully utilizing the advantages of mechanical aeration. It reduces the water depth resistance of the wastewater at the bottom of the aeration tank, ensuring sufficient contact between the wastewater and oxygen for aeration. Combined with the method of supplying oxygen to the bottom of the aeration tank, these two methods work simultaneously to aerate the wastewater, improving the aeration efficiency within the aeration tank. This reduces the amount of oxygen supplied to the aeration tank, thereby reducing power consumption for aeration.

[0018] This invention, through the design of an elastic arc plate, connecting rod, and round rod, can reduce the movement range of sludge when the sewage in the aeration tank is moved. On the one hand, it reduces the amount of sludge discharged from the aeration tank with the water flow, and on the other hand, it can agitate the sludge within a small range, preventing sludge deposition and improving the denitrification effect of the sewage in contact with the microorganisms in the sludge.

[0019] This invention uses a triggering component to move the sludge at the bottom of the aeration tank along the arc of the top of the guide block to the center of the aeration tank under its own gravity. This causes the sludge, which is carried by the sealed box, to re-gather towards the center of the aeration tank. In conjunction with the sealed box, oxygen is delivered to the center of the aeration tank, allowing the wastewater to fully contact the microorganisms in the sludge for denitrification in an area with high oxygen content.

[0020] This invention, through the design of scrapers, limiting frames, and drivers, facilitates the cleaning of sludge at the bottom of the aeration tank. It also guides the movement path of the sludge, causing it to move within the lower half of the aeration tank as it is being moved, thus reducing the possibility of the sludge being carried out of the aeration tank by wastewater and preventing an increase in the suspended solids concentration in the effluent from the aeration tank. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a wastewater treatment device for environmental pollution control proposed in this invention; Figure 2 This is a perspective view of the longitudinal conveying component and oxygen supply component of a wastewater treatment device for environmental pollution control proposed in this invention.

[0022] Figure 3 This is a side view of the longitudinal conveying component and oxygen supply component of a wastewater treatment device for environmental pollution control proposed in this invention.

[0023] Figure 4 This is a partial structural schematic diagram of a longitudinal conveying component of a wastewater treatment equipment for environmental pollution control proposed in this invention.

[0024] Figure 5 This is a partial cross-sectional view of a sealed box for a wastewater treatment device for environmental pollution control proposed in this invention.

[0025] Figure 6 This invention proposes a wastewater treatment device for environmental pollution control. Figure 6 Enlarged structural diagram at point A in the middle.

[0026] Figure 7 This is a perspective view of a wastewater treatment device scraper and actuator for environmental pollution control proposed in this invention.

[0027] Figure 8 This is a side view of a wastewater treatment device scraper and actuator for environmental pollution control proposed in this invention.

[0028] Figure 9 This is a schematic diagram of the connection between the motor and the longitudinal conveying component of a wastewater treatment device for environmental pollution control proposed in this invention.

[0029] In the diagram: 1. Aeration tank; 2. Longitudinal conveying assembly; 21. Extension plate; 22. Sealing box; 23. Divider plate; 24. Slider; 25. Spring; 26. Trigger assembly; 261. Protrusion; 262. Guide block; 3. Oxygen supply assembly; 31. Bent pipe; 32. One-way valve; 33. Horizontal pipe; 34. Air inlet pipe; 4. Annular sealing frame; 5. Elastic arc plate; 6. Connecting rod; 7. Round rod; 8. Scraper; 81. Inclined area; 82. Elastic area; 83. Baffle area; 9. Limiting frame; 10. Driver; 11. Horizontal plate; 12. Motor; 13. Belt. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0031] refer to Figures 1-9 The system includes an aeration tank 1, which contains multiple longitudinal conveying components 2 arranged coaxially at different heights within the aeration tank 1 for conveying oxygen. Each longitudinal conveying component 2 has an oxygen supply component 3 on its side for continuously and unidirectionally supplying oxygen into its interior. Each longitudinal conveying component 2 includes an extension plate 21 mounted on its rotating shaft. A sealed box 22 is fixedly connected to the outer ring of the oxygen supply component 3. The sealed box 22 has an opening near the extension plate 21. Inside the sealed box 22, a partition plate 23 divides its interior into two independent spaces. Air jets are located on the outer ring of the sealed box 22. The nozzle is equipped with a slider 24 that is limited to the sealed box 22. A spring 25 is fixedly connected between the slider 24 and the partition plate 23. The bottom of the aeration tank 1 is equipped with a trigger component 26 that squeezes the outer slider 24 when the sealed box 22 moves to the bottom. After the slider 24 is squeezed into the sealed box 22 by the trigger component 26, it no longer blocks the nozzle. A horizontal plate 11 is fixedly connected to the top of the aeration tank 1. A motor 12 is welded to the top of the horizontal plate 11. A belt 13 is connected between the output end of the motor 12 and the shaft of the longitudinal conveying component 2.

[0032] In this implementation scheme, the oxygen supply component 3 unidirectionally delivers oxygen to the sealed boxes 22 at different heights within the aeration tank 1. The longitudinal conveying component 2 is responsible for conveying the sealed boxes 22 at higher heights to deeper levels within the aeration tank 1. After the sealed boxes 22 move to the bottom of the aeration tank, the oxygen inside is squeezed out. The longitudinal movement of the longitudinal conveying component 2 replaces the method of delivering oxygen to the bottom of the aeration tank 1 where the water pressure is higher by pressure. This avoids the power consumption caused by overcoming water depth resistance and pipeline resistance during blower aeration. At the same time, the method of delivering oxygen to the bottom of the aeration tank 1 for discharge retains the advantages of blower aeration and avoids the situation where mechanical aeration has little impact on the oxygen content at the bottom of the aeration tank.

[0033] The specific process by which the longitudinal conveying component 2 transports oxygen from the top of the aeration tank 1 to the bottom of the aeration tank 1 and then discharges it is as follows: The oxygen supply component 3 transports oxygen to sealed boxes 22 at different heights within the aeration tank 1. The oxygen enters the sealed box 22 and is positioned between the partition plate 23 and the slider 24. The area within the sealed box 22 filled with oxygen is called the oxygen transfer space. The partition plate 23 is made of metal. When the sealed box 22 is above the rotating shaft, the weight of the partition plate 23 causes it to move downwards along the sealed box 22, expanding the volume of the oxygen transfer space. This allows the sealed box 22 to hold more oxygen for transport to the bottom of the aeration tank 1. As the motor 12 drives the sealed box 22 to rotate clockwise along the rotating shaft, the oxygen transported into the sealed box 22 is moved towards the bottom of the aeration tank 1 by the sealed box 22. (Refer to...) Figure 5 As the partition plate 23 gradually moves above the oxygen transfer space, its own weight causes it to move downwards along the sealed box 22, reducing the volume of the oxygen transfer space and thus compressing it. This increases the oxygen pressure inside the sealed box 22. When the sealed box 22 reaches the bottom of the aeration tank 1, the slider 24 is blocked by the trigger component 26 and is forced into the sealed box 22. Once inside, the slider 24 no longer blocks the air outlet, and the air inside the sealed box 22 is forced into the aeration tank 1 by the weight of the partition plate 23. The sealed box 22 continues to rotate driven by the motor 12, repeating the process of being filled with oxygen and moving to the bottom of the aeration tank 1 for discharge. Since the oxygen does not need to overcome the resistance of water depth when it is transported into the sealed box 22, the power consumption generated by overcoming the resistance of water depth when filling the aeration tank 1 with oxygen is reduced. The purpose of transporting oxygen to the bottom of the aeration tank 1 is achieved by moving at different heights in the aeration tank 1, which combines the advantages of blower aeration and mechanical aeration, reduces the power consumption of overcoming the resistance of water depth and pipeline resistance when transporting oxygen to the bottom of the aeration tank, and at the same time, the range of oxygen transported in the aeration tank is also reduced.

[0034] During the process of oxygen being transported to the bottom of aeration tank 1 by the sealed box 22, when the sealed box 22 is at the bottom of aeration tank 1, the partition plate 23 descends under its own gravity, compressing the oxygen transfer space to a minimum. At this time, the space above the partition plate 23 inside the sealed box 22 is called the sewage transfer space. As the volume of the sewage transfer space increases, the sewage at the bottom of aeration tank 1 that is difficult to contact with oxygen enters the sewage transfer space through the opening in the inner ring of the sealed box 22. It is then gradually raised by the sealed box 22, eventually rising to the highest point and being exposed above the sewage. As the sealed box 22 moves from the same height as its axis to the highest point, the partition plate 23 gradually moves towards the sewage. Above the transfer space, the weight of the partition plate 23 itself pushes the sewage in the sewage transfer space out, which can transport the sewage at the bottom of the aeration tank 1 to the air above the aeration tank 1, so that the sewage at the bottom of the aeration tank 1 moves to the upper part of the aeration tank 1 and multiple positions at the top, giving full play to the advantages of mechanical aeration, reducing the water depth resistance of the sewage that was originally at the bottom of the aeration tank 1, and allowing the sewage to fully contact oxygen for aeration. Combined with the method of supplying oxygen to the bottom of the aeration tank 1, the two methods are carried out simultaneously to aerate the sewage, which improves the aeration efficiency of the sewage in the aeration tank 1, thereby reducing the amount of oxygen supplied to the aeration tank 1 and thus reducing the power consumption of aeration.

[0035] Reference Figure 1 The included angle between adjacent sealing boxes 22 is less than 1°, the slider 24 extends to the outside of the sealing box 22, and the cross section of one end of the slider 24 is trapezoidal.

[0036] In this embodiment, the distance between the sealing boxes 22 is reduced, which reduces the amount of sewage filling between the sealing boxes 22 when the sealing boxes 22 are rotated. This reduces the force required to push the sewage when the sealing boxes 22 rotate, and reduces the power consumption generated by the inertia of the sewage when the sealing boxes 22 rotate.

[0037] Reference Figure 6 An annular sealing frame 4 is fixedly connected to the side of the partition plate 23 away from the extension plate 21. The annular sealing frame 4 and the partition plate 23 are an integral structure, and the spring 25 extends into the annular sealing frame 4.

[0038] In this embodiment, an annular sealing frame 4 is provided on one side of the partition plate 23. The outer ring of the annular sealing frame 4 is tightly fitted to the inner wall of the sealing box 22, which reduces the possibility of sewage and oxygen passing through the gap between the partition plate 23 and the sealing box 22, and improves the sealing performance of the oxygen and sewage transport structure.

[0039] Reference Figure 4 The side of the extension plate 21 opposite to the rotation direction of the sealing box 22 is an inclined surface, and the cross section of the extension plate 21 is rectangular.

[0040] In this embodiment, when the extension plate 21 is driven to rotate, the inclined surface on its side pushes the sludge in the sewage aeration tank 1 away from its surface, reducing the resistance of the extension plate 21 to the sewage when it rotates.

[0041] Reference Figure 6 The bottom of the sealed box 22 is slidably connected to an elastic arc plate 5 extending into its bottom opening. A connecting rod 6 is fixedly connected between the elastic arc plate 5 and the partition plate 23. Multiple round rods 7 are fixedly connected to the side of the elastic arc plate 5 away from the connecting rod 6.

[0042] In this embodiment, the elastic arc plate 5 reduces the opening size, ensuring that the wastewater in the aeration tank 1 can enter the sealed box 22 for transport while reducing the amount of sludge entering the sealed box 22. The sealed box 22, located above the aeration tank 1, is referenced... Figure 5 and Figure 6 Under its own gravity, the partition plate 23 pushes the elastic arc plate 5 down through the connecting rod 6, so that the elastic arc plate 5 is away from the opening of the sealed box 22, so that the sewage in the sealed box 22 can be smoothly discharged to the top of the aeration tank 1 without being blocked.

[0043] At the sealed box 22 located at the bottom of the aeration tank 1, the partition plate 23, under its own gravity, pulls the elastic arc plate 5 towards the opening of the sealed box 22 via the connecting rod 6. The elastic arc plate 5 is bent by the obstruction at the opening of the sealed box 22, constricting the round rod 7 into a smaller space, making the distribution density of the round rod 7 greater, blocking most of the area at the opening of the sealed box 22. This allows sewage to slowly enter the sealed box 22 while reducing the amount of sludge entering the sealed box 22. The sludge is carried towards the sealed box 22 by the sewage, blocked by the elastic arc plate 5, and then blocked by the round rod 7. The high distribution density of the round rod 7 obstructs the movement of the sludge, slowing down the movement speed of the sludge and preventing the sludge from being agitated excessively. After the large amount of wastewater is discharged with the water flow, the sealed box 22 moves to its highest point. The elastic arc plate 5 is pushed away from the opening of the sealed box 22 by the partition plate 23. The elastic arc plate 5 is no longer blocked by the opening of the sealed box 22. Then, under its own elasticity, the elastic arc plate 5 tends to flatten. The elastic arc plate 5 drives the circular rod 7 to disperse a greater distance, so that when the wastewater flows through the circular rod 7, it can better flush the sludge attached between the circular rod 7. When the wastewater in the aeration tank 1 is moved, the movement range of the sludge is reduced. On the one hand, this reduces the amount of sludge discharged from the aeration tank 1 with the water flow. On the other hand, it can drive the sludge to turn over in a small area, prevent sludge deposition, and improve the denitrification effect of the wastewater and the microorganisms in the sludge.

[0044] Reference Figure 2The oxygen supply component 3 includes a bent pipe 31 located on the side of the sealed box 22. The interface between the bent pipe 31 and the sealed box 22 is located between the partition plate 23 and the slider 24. A one-way valve 32 is provided at one end of the bent pipe 31 near the sealed box 22. A transverse pipe 33 with both ends closed is sleeved on the rotating shaft of the longitudinal conveying component 2. An air inlet pipe 34 extending to the axis of the longitudinal conveying component 2 is provided on one side of the aeration tank 1. The air inlet pipe 34 is connected to the transverse pipe 33. One end of the bent pipe 31 is connected to the transverse pipe 33.

[0045] In this embodiment, the air pump is connected to the air inlet pipe 34, and oxygen is delivered to the sealed box 22 through the air inlet pipe 34, the horizontal pipe 33 and the bend pipe 31. The one-way valve 32 ensures that the oxygen in the sealed box 22 will not be affected by the water pressure in the aeration tank 1 and will not flow back into the bend pipe 31, thereby reducing the influence of the water depth resistance at the bottom of the aeration tank 1 on the process of delivering oxygen to the aeration tank 1.

[0046] Reference Figure 4 The triggering component 26 includes a protrusion 261 fixed to the bottom of the aeration tank. Both sides of the protrusion 261 are fixedly connected to guide blocks 262 with arc-shaped tops. The height of the top of the guide block 262 towards the protrusion 261 gradually decreases. The top of the guide block 262 is provided with a receiving cavity for accommodating the pipe.

[0047] In this embodiment, the protrusion 261 blocks the slider 24 when the sealing box 22 moves to the bottom. After pushing the slider 24 into the interior of the sealing box 22, it no longer blocks the air jet. The guide block 262 guides the sludge at the bottom of the aeration tank 1. Under its own gravity, the sludge at the bottom of the aeration tank 1 moves along the arc surface at the top of the guide block 262 to the center of the aeration tank 1, so that the sludge driven by the sealing box 22 gathers back to the center of the aeration tank 1. Together with the sealing box 22, oxygen is delivered to the center of the aeration tank 1, so that the sewage can fully contact the microorganisms in the sludge for denitrification in the area with high oxygen content.

[0048] Reference Figure 7 and Figure 8 The surface of the trigger component 26 is provided with a scraper 8 for scraping away the sludge on its surface. A limiting frame 9 for limiting the scraper 8 from the top is fixedly connected to the side of the aeration tank 1. A driver 10 is connected between the lower half of the scraper 8 and the aeration tank 1. The driver 10 is a waterproof electric cylinder. The scraper 8 includes an inclined area 81, an elastic area 82 and a baffle area 83. The inclined area 81 is located at the bottom of the scraper 8. The elastic area 82 is located above the inclined area 81. The baffle area 83 is fixed to the upper surface of the inclined area 81. A notch adapted to the receiving cavity is opened on the inclined area 81. The notch penetrates the baffle area 83.

[0049] In this embodiment, when it is necessary to clean the sludge at the bottom of the aeration tank 1, the control driver 10 pushes the scraper 8 to move. The inclined area 81 of the scraper 8 scoops away the sludge at the bottom of the aeration tank 1. The sludge that moves onto the scraper 8 is blocked by the baffle area 83, increasing the amount of sludge carried by the scraper 8. When it is not necessary to clean the sludge at the bottom of the aeration tank 1, the driver 10 pulls the scraper 8 to move towards the limiting frame 9. The elastic area 82 bends after being blocked by the side wall of the aeration tank 1, and moves laterally towards the middle of the aeration tank 1 under the limitation of the limiting frame 9. When the moving sewage drives the sludge at the bottom of the aeration tank 1 to move, the sludge falls after moving laterally along the elastic area 82, which plays the role of limiting the height of the sludge being driven, making it convenient to clean the sludge at the bottom of the aeration tank 1. At the same time, it can guide the movement path of the sludge, so that the sludge moves in the lower half of the aeration tank 1 when it is driven to move, reducing the possibility of the sludge being carried out of the aeration tank 1 by the sewage, thereby avoiding an increase in the suspended solids concentration of the effluent from the aeration tank 1.

[0050] The above description is only a preferred embodiment 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 device for environmental pollution control, comprising an aeration tank (1), characterized in that, The aeration tank (1) is provided with multiple longitudinal conveying components (2) that convey oxygen at different heights in the aeration tank (1) along the same axis. The longitudinal conveying components (2) are provided with oxygen supply components (3) that continuously convey oxygen into them in one direction. The longitudinal conveying assembly (2) includes an extension plate (21) on its rotating shaft. The outer ring of the oxygen supply assembly (3) is fixedly connected to a sealing box (22). The sealing box (22) has an opening on the side near the extension plate (21). The sealing box (22) is provided with a partition plate (23) that divides its interior into two independent spaces. The outer ring of the sealing box (22) is provided with an air jet. The air jet is provided with a slider (24) that is limited on the sealing box (22). A spring (25) is fixedly connected between the slider (24) and the partition plate (23). The bottom of the aeration tank (1) is provided with a trigger assembly (26) that squeezes the outer slider (24) when the sealing box (22) moves to the bottom. After the slider (24) is squeezed into the interior of the sealing box (22) by the trigger assembly (26), it no longer blocks the air jet.

2. The wastewater treatment equipment for environmental pollution control according to claim 1, characterized in that, The included angle between adjacent sealing boxes (22) is less than 1°, the slider (24) extends to the outside of the sealing box (22), and the cross section of one end of the slider (24) is trapezoidal.

3. The wastewater treatment equipment for environmental pollution control according to claim 1, characterized in that, The partition plate (23) is fixedly connected to an annular sealing frame (4) on the side away from the extension plate (21). The annular sealing frame (4) and the partition plate (23) are an integrated structure, and the spring (25) extends into the annular sealing frame (4).

4. The wastewater treatment equipment for environmental pollution control according to claim 1, characterized in that, The extension plate (21) and the sealing box (22) are on opposite sides of the rotation direction of the extension plate (21) and the cross section of the extension plate (21) is rectangular.

5. The wastewater treatment equipment for environmental pollution control according to claim 1, characterized in that, The bottom of the sealed box (22) is slidably connected to an elastic arc plate (5) extending into its bottom opening. A connecting rod (6) is fixedly connected between the elastic arc plate (5) and the partition plate (23). Multiple round rods (7) are fixedly connected to the side of the elastic arc plate (5) away from the connecting rod (6).

6. The wastewater treatment equipment for environmental pollution control according to claim 1, characterized in that, The oxygen supply component (3) includes a bent pipe (31) located on the side of the sealed box (22). The interface between the bent pipe (31) and the sealed box (22) is located between the partition plate (23) and the slider (24). A one-way valve (32) is provided at one end of the bent pipe (31) near the sealed box (22). A transverse pipe (33) with both ends closed is sleeved on the rotating shaft of the longitudinal conveying component (2). An air inlet pipe (34) extending to the axis of the longitudinal conveying component (2) is provided on one side of the aeration tank (1). The air inlet pipe (34) is connected to the transverse pipe (33). One end of the bent pipe (31) is connected to the transverse pipe (33).

7. The wastewater treatment equipment for environmental pollution control according to claim 1, characterized in that, The triggering component (26) includes a protrusion (261) fixed at the bottom of the aeration tank. Both sides of the protrusion (261) are fixedly connected to guide blocks (262) with arc-shaped tops. The height of the top of the guide block (262) towards the protrusion (261) gradually decreases. The top of the guide block (262) is provided with a receiving cavity for accommodating the pipe.

8. A wastewater treatment device for environmental pollution control according to claim 7, characterized in that, The trigger component (26) has a scraper (8) on its surface for scraping off the sludge on its surface. A limiting frame (9) for limiting the scraper (8) from the top is fixedly connected to the side of the aeration tank (1). A driver (10) is connected between the lower half of the scraper (8) and the aeration tank (1).

9. A wastewater treatment device for environmental pollution control according to claim 8, characterized in that, The scraper (8) includes an inclined region (81), an elastic region (82) and a baffle region (83). The inclined region (81) is located at the bottom of the scraper (8), the elastic region (82) is located above the inclined region (81), and the baffle region (83) is fixed on the upper surface of the inclined region (81). The inclined region (81) has a notch that matches the receiving cavity, and the notch penetrates the baffle region (83).

10. A wastewater treatment device for environmental pollution control according to claim 1, characterized in that, The aeration tank (1) is fixedly connected to a horizontal plate (11) at the top. A motor (12) is welded to the top of the horizontal plate (11). A belt (13) is connected between the output end of the motor (12) and the shaft of the longitudinal conveying component (2).

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