Anti-clogging aeration device and method for sewage treatment

Abstract

The utility model provides an anti -blocking aeration device and method for sewage treatment, including the aeration pipe of interval arrangement in aeration tank bottom, aeration pipe both ends are connected with fixed setting in aeration tank bottom air inlet box and drive box respectively, a plurality of aeration heads are communicated on aeration pipe, and drive device is equipped in drive box, drive device includes the guide rail of fixed connection in drive box bottom, a plurality of sliding blocks are assembled on guide rail, the rack is installed on sliding block, a plurality of first shaft sleeves and second shaft sleeves are communicated on drive box and air inlet box respectively, and the rotating shaft is assembled in first shaft sleeve. The utility model is used to solve the problem of aeration head blockage, and the problem that the sewage treatment efficiency is influenced by the dismounting and cleaning aeration head.

Description

Technical Field

[0001] This invention relates to an anti-clogging aeration device and method for wastewater treatment. Background Technology

[0002] In wastewater treatment, aeration devices are needed to oxygenate the wastewater in the aeration tank. When the aeration heads are shut down, the sludge in the wastewater will settle and fall onto the aeration heads, clogging the micropores and affecting the aeration effect. The current treatment method is to drain the wastewater from the aeration tank, disassemble the aeration heads for cleaning, and reuse them. This treatment method affects the efficiency of wastewater treatment. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an anti-clogging aeration device and method for sewage treatment, which solves the problem of aeration head clogging and the impact of disassembling and cleaning aeration heads on sewage treatment efficiency.

[0004] To solve the above problems, the technical solution of the present invention is as follows:

[0005] A clog-resistant aeration device for wastewater treatment includes multiple aeration pipes spaced apart at the bottom of an aeration tank. Each aeration pipe is connected at both ends to an air inlet box and a drive box fixedly located at the bottom of the aeration tank. Multiple aeration heads are connected to the aeration pipes. A drive device is located inside the drive box. The drive device includes a guide rail fixedly connected to the bottom of the drive box, with multiple sliders mounted on the guide rail. A rack is mounted on the sliders. Multiple first and second bushings are connected to the drive box and the air inlet box, respectively. A rotating shaft is mounted inside the first bushing, with a gear meshing with the rack at one end. One of the rotating shafts has its other end connected to a drive motor mounted on the drive box. The other ends of the other rotating shafts are connected to one end of an aeration pipe via plugs. The other end of the aeration pipe is connected to a shaft tube, which is mounted inside the second bushing. The air inlet box is connected to an air pump via an air inlet pipe.

[0006] A water immersion sensor is installed on the drive box. The bottom of the drive box is connected to a water pump installed on the aeration tank via a water pumping pipe. The water immersion sensor is connected to the controller input terminal, and the drive motor and water pump are connected to the controller output terminal.

[0007] An electrostatic box is connected to the air intake pipe. An electrode needle is installed inside the electrostatic box. The electrode needle is connected to a high-voltage generator. One end of the electrostatic box is connected to a flue gas pipe.

[0008] A method for an anti-clogging aeration device for wastewater treatment includes the following steps: initially, each aeration head faces the bottom of the aeration tank; when aeration of wastewater in the aeration tank is required, an air pump blows air from the aeration head to spray bubbles towards the bottom of the aeration tank; then, a drive motor drives the aeration head to face vertically upwards to aerate the wastewater in the aeration tank; after the wastewater aeration is completed, the drive motor drives the aeration head to return to its initial position.

[0009] The beneficial effects of this invention are as follows:

[0010] When the aeration heads stop, the drive motor rotates them to face the bottom of the aeration tank, preventing sludge from falling onto the aeration heads and effectively avoiding clogging. Before aeration, the aeration heads spray bubbles onto the sludge at the bottom of the tank, causing it to float and enter the next treatment unit, preventing sludge accumulation at the bottom of the aeration tank. During aeration, the drive motor drives the aeration heads to oscillate back and forth, expanding their radiation surface and improving aeration efficiency. During aeration, flue gas is introduced into the air, applying a static charge to the gas particles, which are then ejected from the aeration heads. Flue gas particles with the same polarity of charge adhere to the bubbles, causing them to repel each other, preventing the merging of fine bubbles, inhibiting the formation of large bubbles, increasing the contact area between the bubbles and the wastewater, and improving dissolved oxygen efficiency. (See attached diagram.)

[0011] The invention will be further described below with reference to the accompanying drawings:

[0012] Figure 1 This is a top view of the structure of the present invention.

[0013] Figure 2 for Figure 1 A magnified view of the structure at point A in the middle.

[0014] Figure 3 for Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0015] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point C.

[0017] Figure 6 This is a schematic diagram of the structure of the aeration head according to the present invention.

[0018] Figure 7 This is a schematic diagram showing the connection relationship between the various electrical components of the present invention.

[0019] In the diagram: 1. Aeration pipe; 2. Second bushing; 3. Air inlet box; 4. Air inlet pipe; 5. Aeration head; 6. First bushing; 7. Drive box; 8. Gear; 9. Rack; 10. Pumping pipe; 11. Water immersion sensor; 12. Drive motor; 13. Plug; 14. Rotating shaft; 15. Shaft seal; 16. Bearing; 17. Shaft tube; 18. Flue gas pipe; 19. Electrode needle; 20. Static electricity box; 21. Air pump; 22. Aeration tank; 23. Guide rail; 24. Pumping water; 25. High pressure generator; 26. Slider; 27. Vent pipe. Detailed Implementation

[0020] like Figures 1 to 7 As shown, an anti-clogging aeration device for sewage treatment includes multiple aeration pipes 1 spaced apart at the bottom of an aeration tank 22. The two ends of each aeration pipe 1 are connected to an air inlet box 3 and a drive box 7, respectively. The air inlet box 3 and the drive box 7 are mounted against the inner walls of both sides of the aeration tank 22 and are fixedly connected to the bottom of the aeration tank 22 by brackets and expansion bolts. Multiple aeration heads 5 are connected to the aeration pipes 1. A drive device is provided inside the drive box 7. The drive device includes a guide rail 23 fixedly connected to the bottom of the drive box 7, with multiple sliders 26 mounted on the guide rail 23. A rack 9 is mounted on the sliders 26. Multiple first bushings 6 and second bushings 2 are connected to the drive box 7 and the air inlet box 3, respectively. A rotating shaft 14 is mounted inside the first bushing 6. One end of shaft 14 is equipped with a gear 8 that meshes with rack 9. One of the multiple shafts 14 has its other end connected to drive motor 12 mounted on drive box 7. The other ends of the shafts 14 are connected to one end of aeration pipe 1 through plug 13. The other end of aeration pipe 1 is connected to shaft tube 17. Shaft tube 17 is installed in second bushing 2. Air inlet box 3 is connected to air pump 21 through air inlet pipe 4. Shaft seal 15 and bearing 16 are installed between shaft 14 and first bushing 6 and between shaft tube 17 and second bushing 2. This ensures that aeration pipe 1 can rotate freely while preventing sewage from entering drive box 7. Drive motor 12 is a waterproof servo motor. Drive motor 12 drives aeration pipe 1 to rotate through gear 8 and rack 9.

[0021] The working process of this invention is as follows:

[0022] Initially, such as Figure 7 As shown, each aeration head 5 faces the bottom of the aeration tank 22, that is, the spray direction of the aeration head 5 is towards the 6 o'clock position.

[0023] Step 1: Start the air pump 21. The air pump 21 blows air out from each aeration head 5. The bubbles sprayed from the aeration head 5 agitate the sludge at the bottom of the aeration tank 22. Then, the drive motor 12 drives the aeration head 5 to swing back and forth between the 4 o'clock and 8 o'clock positions. In this way, the swinging of the aeration head 5 and the sprayed bubbles can stir up the sludge settled at the bottom of the tank, making the sludge float to the surface and enter the next wastewater treatment unit. In addition, pumping air into the aeration head 5 first and then swinging the aeration head 5 can make the aeration head 5 continuously vent and bubble, preventing sludge from entering the micropores of the aeration head 5.

[0024] Step 2: After the aeration head 5 continuously bubbles towards the bottom of the tank for 2 minutes, the servo motor drives the aeration head 5 vertically upward, that is, the direction of the aeration head 5 is towards the 12 o'clock position. Then, the drive motor 12 drives the aeration head 5 to swing back and forth between the 3 o'clock and 10 o'clock positions, expanding the radiation surface of the aeration head 5 and improving the aeration effect of the sewage.

[0025] Step 3: After the sewage aeration is completed, the drive motor drives the aeration towards the bottom of the aeration tank 22, and then the air pump 21 stops. In this way, the sludge settled in the aeration tank 22 cannot fall onto the micropores of the aeration head 5, thus effectively preventing the aeration head 5 from clogging.

[0026] A water immersion sensor 11 is installed on the drive box 7. The bottom of the drive box 7 is connected to a water pump 24 installed on the aeration tank 22 via a water pumping pipe 10. The water immersion sensor 11 is connected to the input terminal of the controller, and the drive motor 12 and the water pump 24 are connected to the output terminal of the PLC controller. A vent pipe 27 is connected to the drive box 7, and the upper end of the vent pipe 27 is located above the aeration tank 22. When the seal is damaged, sewage enters the drive box 7, causing the guide rail 23, slider 26, rack 9 and gear 8 to rust and be damaged. Therefore, a water immersion sensor 11 is installed on the drive box 7. After the water immersion sensor 11 detects that sewage has entered the drive box 7, the controller controls the water pump 24 to start, first draining the water in the drive box 7 to prevent water from overflowing the gear 8 and rack 9. After the staff receives the water leakage signal from the drive box 7, the sewage in the aeration tank is emptied, and the staff enters the aeration tank to replace and repair the shaft seal of the drive box 7.

[0027] like Figure 4 As shown, an electrostatic box 20 is connected to the air intake pipe 4. An electrode needle 19 is provided inside the electrostatic box 20. The electrode needle 19 is connected to a high voltage generator 25. One end of the electrostatic box 20 is connected to a flue pipe 18.

[0028] The sludge produced by the wastewater treatment plant needs to be incinerated. The flue gas generated by incineration is discharged after passing through a dust removal system, an ozone denitrification system, an acid gas removal system, and an activated carbon adsorption system. In the dust removal system, the flue gas first passes through a cyclone separator to remove large dust particles, and then enters a bag filter. One end of the flue gas pipe 18 connects the pipe between the cyclone separator and the bag filter. The dust-laden flue gas with particles removed by the cyclone separator is sent into the electrostatic precipitator 20, where it mixes with the air blown out by the air pump 21 and is then sprayed out from the aeration head 5. The micropores of the aeration head 5 have a diameter between 50 and 80 μm. After being removed by the cyclone separator, the dust particles in the flue gas have a diameter between 10 and 30 μm. Therefore, the dust particles in the flue gas can pass through the micropores of the aeration head 5. When the dust particles in the flue gas are in the electrostatic box 20, they come into contact with the electrode needle 19 and become charged. The dust particles are then ejected from the aeration head 5. Flue gas particles with the same polarity of charge attach to the bubbles, causing the exhaust bubbles to repel each other directly. This prevents the fine bubbles from merging, inhibits the generation of large bubbles, expands the contact area between the bubbles and the wastewater, and improves the dissolved oxygen efficiency.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An anti-clogging aeration device for sewage treatment, characterized in that: The system includes multiple aeration pipes (1) spaced apart at the bottom of the aeration tank (22). The two ends of each aeration pipe (1) are connected to an air inlet box (3) and a drive box (7) fixedly located at the bottom of the aeration tank (22), respectively. Multiple aeration heads (5) are connected to the aeration pipes (1). A drive device is provided inside the drive box (7). The drive device includes a guide rail (23) fixedly connected to the bottom of the drive box (7). Multiple sliders (26) are mounted on the guide rail (23), and racks (9) are mounted on the sliders (26). Multiple first bushings (6) are connected to the drive box (7) and the air inlet box (3), respectively. The first bushing (6) and the second bushing (2) are equipped with a rotating shaft (14). One end of the rotating shaft (14) is equipped with a gear (8) that meshes with the rack (9). One of the multiple rotating shafts (14) is connected to the drive motor (12) installed on the drive box (7) at the other end. The other ends of the other rotating shafts (14) are connected to one end of the aeration pipe (1) through a plug. The other end of the aeration pipe (1) is connected to the shaft tube (17). The shaft tube (17) is installed in the second bushing (2). The air inlet box (3) is connected to the air pump (21) through the air inlet pipe (4). A water immersion sensor (11) is installed on the drive box (7). The bottom of the drive box (7) is connected to the water pump (24) set on the aeration tank (22) through the water pumping pipe (10). The water immersion sensor (11) is connected to the controller input terminal, and the drive motor (12) and the water pump (24) are connected to the controller output terminal.

2. The anti-clogging aeration device for sewage treatment according to claim 1, characterized in that: An electrostatic box (20) is connected to the air inlet pipe (4). An electrode needle (19) is provided inside the electrostatic box (20). The electrode needle (19) is connected to a high voltage generator (25). One end of the electrostatic box (20) is connected to a flue pipe (18).

3. A method for using the anti-clogging aeration device for wastewater treatment as described in claim 1, characterized in that: Initially, each aeration head (5) faces the bottom of the aeration tank (22). When it is necessary to aerate the sewage in the aeration tank (22), the air pump (21) blows air out from the aeration head (5) and sprays bubbles from the aeration head (5) to the bottom of the aeration tank (22). Then, the drive motor (12) drives the aeration head (5) to face vertically upward to aerate the sewage in the aeration tank (22). After the sewage aeration is completed, the drive motor (12) drives the aeration head (5) to return to the initial position.

4. The method for an anti-clogging aeration device for wastewater treatment according to claim 3, characterized in that: While the aeration head (5) sprays foam onto the sludge at the bottom of the aeration tank (22) and aerates the wastewater, the drive motor (12) drives each aeration head (5) to swing back and forth through the rack (9).

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