Circulating aeration device for sewage treatment

Abstract

The utility model relates to the field of sewage treatment, in particular to a circulating aeration device for sewage treatment, which comprises an aeration frame, a main body for aeration installation, a servo motor, a transmission rod fixedly arranged above the aeration frame and used for an output end, a first stirring disc fixedly arranged at the other end of the transmission rod, and a second stirring disc fixedly arranged at the other end of the transmission rod, and a second stirring disc is fixedly mounted at the bottom of the first stirring disc. The circulating aeration device for the sewage treatment is provided with the first stirring disc, the second stirring disc, the water diversion helical teeth, the first side supporting plate, the pressurizing air pump, the air suction pipe, the air supply pipe, the water storage box and the pressurizing water pump, so that when the circulating aeration device for the sewage treatment is used, water flow in the aeration tank is stirred through the rotation of the first stirring disc and the second stirring disc; water diversion helical teeth are arranged outside the first stirring disc and the second stirring disc, so that the stirring and scattering force of the first stirring disc and the second stirring disc on the liquid is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, specifically to a circulating aeration device for wastewater treatment. Background Technology

[0002] Wastewater treatment refers to the purification of various types of wastewater, such as industrial wastewater and domestic sewage, through physical, chemical, and biological methods to remove pollutants, suspended solids, organic matter, heavy metals, pathogens, etc., so that they meet discharge standards or can be recycled. Common wastewater treatment technologies include: physical treatment such as sedimentation, filtration, and flotation; chemical treatment such as neutralization, oxidation-reduction, and coagulation sedimentation; and biological treatment such as activated sludge and biofilm processes. Circulating aeration devices for wastewater treatment are the core equipment in the biological treatment stage of wastewater treatment, mainly used in processes such as activated sludge. Their core function is to provide oxygen for aerobic microorganisms such as bacteria and protozoa by forcibly introducing air or oxygen into the wastewater, promoting their metabolism and decomposition of organic matter in the wastewater.

[0003] Existing circulating aeration devices for wastewater treatment suffer from several drawbacks during operation. These devices primarily agitate the water in the tank, resulting in reduced gas-liquid contact area, decreased oxygen dissolution rate, and insufficient dissolved oxygen. This negatively impacts the metabolism of aerobic microorganisms, leading to decreased pollutant removal efficiency and substandard effluent quality. Furthermore, the lack of coordinated design over long-term use can result in excessively high local pollutant concentrations at the bottom of the tank, ultimately hindering aeration performance.

[0004] Therefore, it is necessary to invent a circulating aeration device for wastewater treatment to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a circulating aeration device for wastewater treatment. Through the coordinated operation of a first stirring plate, a second stirring plate, water-dividing inclined teeth, a first side support plate, a pressurized air pump, an air extraction pipe, an air delivery pipe, a water storage box, and a pressurized water pump, the device increases the contact area between air and liquid, allowing oxygen to dissolve more efficiently in the water and increasing the oxygenation probability. This also benefits the metabolic activities of aerobic microorganisms. Furthermore, the first and second stirring plates, combined with nozzles extending to the bottom of the tank via the first and second side support plates, form a three-dimensional stirring system. The synergistic effect of rising air bubbles and water circulation allows activated sludge to... Thorough mixing of wastewater enhances overall stability and effectively prevents activated sludge deposition, resulting in better treatment of high-concentration organic wastewater. This addresses the problems of existing circulating aeration devices for wastewater treatment, which, due to their singular agitation of the pool water, reduce the gas-liquid contact area, decrease the oxygen dissolution rate, and impair aerobic microbial metabolism, leading to decreased pollutant removal efficiency and substandard effluent quality. Furthermore, the lack of synergistic design in long-term use can result in excessively high local pollutant concentrations at the bottom of the pool, ultimately hindering aeration.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a circulating aeration device for sewage treatment, comprising an aeration frame and a main body for aeration installation;

[0007] A servo motor is fixedly installed above the aeration frame. A transmission rod is fixedly installed at the output end, and a first stirring plate is fixedly installed at the other end of the transmission rod. A second stirring plate is fixedly installed at the bottom of the first stirring plate. Water-dividing oblique teeth are fixedly installed on the outside of both the first and second stirring plates.

[0008] The first side support plate is fixedly installed on the bottom right side of the aeration frame. A pressurized air pump is fixedly installed on the top of the pressurized air pump, and an air extraction pipe is fixedly installed on the outside of the pressurized air pump. An air delivery pipe is fixedly installed at the output end of the pressurized air pump, and a diverter pipe is fixedly installed at the other end of the air delivery pipe. An aeration pipe is fixedly installed on the outside of the first side support plate, and an aeration nozzle is fixedly installed on the outside of the aeration pipe.

[0009] The second side support plate is fixedly installed on the bottom left side of the aeration frame, and a water storage box is fixedly installed on top of it. A pressurized water pump is fixedly installed on top of the water storage box, and the output end of the pressurized water pump is fixedly connected to a separation delivery pipe.

[0010] Preferably, the number of water-dividing oblique teeth is set to multiple, and the multiple water-dividing oblique teeth are distributed at equal intervals on the first and second stirring plates.

[0011] Preferably, a mixing base plate is fixedly installed at the bottom of the second mixing plate, and fixing bolts are threaded through the upper two sides of the mixing base plate.

[0012] Preferably, the bottom end of the fixing bolt is threadedly connected to a stirring rod, and inclined stirring blades are fixedly installed on the outside of the stirring rod.

[0013] Preferably, the number of aeration nozzles is set to multiple, and the multiple aeration nozzles are distributed at equal intervals on the aeration pipe, and the tail end of the aeration pipe is fixedly connected to the other end of the air supply pipe.

[0014] Preferably, a water vapor pipe is fixedly connected to the other end of the separating conveying pipe, and an aeration nozzle is fixedly installed on the outside of the water vapor pipe.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] This utility model includes a first stirring plate, a second stirring plate, water-dividing inclined teeth, a first side support plate, a pressurized air pump, an air extraction pipe, an air delivery pipe, a water storage box, and a pressurized water pump. When using this wastewater treatment circulating aeration device, in addition to the rotation of the first and second stirring plates to agitate the water flow inside the aeration tank, water-dividing inclined teeth are provided on the outside of both the first and second stirring plates to enhance the agitation and dispersion of the liquid. Then, the nozzles are extended to the bottom of the tank through the first and second side support plates on both sides, respectively, while air is pumped into the bottom of the tank by the pressurized air pump for aeration. On one side, a pressurized water pump draws oxygen-rich water into the bottom of the tank for mixing. This synergistic operation increases the contact area between the gas and liquid, allowing oxygen to dissolve more efficiently in the water and increasing the oxygenation rate. This also benefits the metabolic activities of aerobic microorganisms. Furthermore, the first and second mixing discs, combined with nozzles extending to the bottom of the tank via first and second side support plates, form a three-dimensional mixing system. The synergistic effect of rising air bubbles and water circulation ensures thorough mixing of activated sludge and wastewater, thus enhancing overall stability and effectively preventing activated sludge deposition. This results in excellent treatment of high-concentration organic wastewater. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the first stirring plate structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the inclined stirring blade structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the aeration pipe structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the water storage box structure of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Aeration frame; 2. Servo motor; 3. Transmission rod; 4. First mixing plate; 5. Second mixing plate; 6. Water distribution oblique teeth; 7. Mixing base plate; 8. Fixing bolt; 9. Mixing rod; 10. Inclined mixing blade; 11. First side support plate; 12. Pressurized air pump; 13. Air extraction pipe; 14. Air delivery pipe; 15. Diverter pipe; 16. Aeration pipe; 17. Aeration nozzle; 18. Second side support plate; 19. Water storage box; 20. Pressurized water pump; 21. Separation and delivery pipe; 22. Water vapor pipe; 23. Aeration nozzle. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1-5 The wastewater treatment circulating aeration device shown includes an aeration frame 1 and a main body for aeration installation.

[0027] Servo motor 2 is fixedly installed above aeration frame 1. A transmission rod 3 is fixedly installed at the output end, and a first stirring plate 4 is fixedly installed at the other end of the transmission rod 3. A second stirring plate 5 is fixedly installed at the bottom of the first stirring plate 4. Water-dividing oblique teeth 6 are fixedly installed on the outside of both the first stirring plate 4 and the second stirring plate 5.

[0028] The first side support plate 11 is fixedly installed on the bottom right side of the aeration frame 1. A pressurized air pump 12 is fixedly installed on the top. An air extraction pipe 13 is fixedly installed on the outside of the pressurized air pump 12. An air supply pipe 14 is fixedly installed at the output end of the pressurized air pump 12. A diverter pipe 15 is fixedly installed at the other end of the air supply pipe 14. An aeration pipe 16 is fixedly installed on the outside of the first side support plate 11. An aeration nozzle 17 is fixedly installed on the outside of the aeration pipe 16.

[0029] The second side support plate 18 is fixedly installed on the bottom left side of the aeration frame 1. A water storage box 19 is fixedly installed on top of the water storage box 19, and a pressurized water pump 20 is fixedly installed on top of the water storage box 19. The output end of the pressurized water pump 20 is fixedly connected to a separation delivery pipe 21. The nozzles are extended to the bottom of the pool through the first side support plate 11 and the second side support plate 18 on both sides. On one side, the pressurized air pump 12 draws air into the bottom of the pool for aeration, and on the other side, the pressurized water pump 20 draws water with high oxygen content and inputs it into the bottom of the pool for mixing. This coordinated operation increases the contact area between air and liquid, making oxygen dissolve in water more efficiently and increasing the probability of dissolved oxygen.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the number of water-dividing oblique teeth 6 is set to multiple, and the multiple water-dividing oblique teeth 6 are distributed at equal intervals on the first stirring plate 4 and the second stirring plate 5. Water-dividing oblique teeth 6 are set on the outside of the first stirring plate 4 and the second stirring plate 5, which enhances the stirring and dispersing force of the liquid by the first stirring plate 4 and the second stirring plate 5. A stirring base plate 7 is fixedly installed at the bottom of the second stirring plate 5, and fixing bolts 8 are threaded through the upper two sides of the stirring base plate 7. The stirring base plate 7 and the oblique stirring blades 10 are also installed at the bottom of the second stirring plate 5, which further enhances the stirring force on the bottom of the pool, so that the gas and liquid are fully mixed. The bottom end of the fixing bolts 8 is threadedly connected to the stirring rod 9, and the oblique stirring blades 10 are fixedly installed on the outside of the stirring rod 9. The overall structure of the oblique stirring blades 10 and the stirring rod 9 is simple and easy to operate, and it is convenient for maintenance personnel to replace them in time if a fault occurs.

[0031] like Figure 1 , Figure 4 and Figure 5 As shown, the number of aeration nozzles 17 is set to multiple, and the multiple aeration nozzles 17 are distributed at equal intervals on the aeration pipe 16. The tail end of the aeration pipe 16 is fixedly connected to the other end of the air supply pipe 14. The nozzles are extended to the bottom of the pool through the first side support plate 11 and the second side support plate 18. On one side, air is pumped into the bottom of the pool for aeration by the pressurized air pump 12. The other end of the separation and delivery pipe 21 is fixedly connected to the water vapor pipe 22. Aeration nozzles 23 are fixedly installed on the outside of the water vapor pipe 22. On the other side, the pressurized water pump 20 draws water with high oxygen content and inputs it into the bottom of the pool for mixing, thus forming a coordinated operation.

[0032] The working principle of this utility model is as follows: First, the aeration frame 1 is installed above the aeration tank for sewage treatment using external bolts. Then, the external power supply is connected, and the servo motor 2 is turned on to drive the first stirring plate 4 and the second stirring plate 5 to rotate. Besides agitating the water flow inside the aeration tank through the rotation of the first and second stirring plates 4 and 5, both plates are equipped with water-dividing oblique teeth 6, which enhances the agitation and dispersion of the liquid. Next, a bottom stirring plate 7 and oblique stirring blades 10 are installed at the bottom of the second stirring plate 5, further strengthening the agitation of the tank bottom and ensuring thorough mixing of air and liquid. Then, the nozzles on both sides of the aeration frame 1 are extended to the tank bottom via the first side support plate 11 and the second side support plate 18. At this point, the switch of the pressurized air pump 12 can be turned on, allowing it to draw in external air and input it into the aeration nozzles 17 of the aeration pipe 16 through the air supply pipe 14 and the diversion pipe 15. This allows the aeration to proceed simultaneously. Air is pumped into the bottom of the tank by the pressurized air pump 12 for aeration. The same operation is performed on the other side, with the pressurized water pump 20 drawing oxygen-rich water from the water storage box 19 and spraying it out from the aeration nozzles 23 at the bottom of the tank for mixing. This coordinated operation increases the contact area between air and liquid, making oxygen dissolve in the water more efficiently, increasing the oxygenation probability, and also benefiting the metabolic activities of aerobic microorganisms. Moreover, the first mixing plate 4 and the second mixing plate 5, combined with the nozzles extending to the bottom of the tank through the first side support plate 11 and the second side support plate 18 on both sides, form a three-dimensional mixing. The synergistic effect of rising bubbles and water circulation ensures that the activated sludge and sewage are fully mixed. Finally, after completing the installation and use of the circulating aeration device for sewage treatment according to the above operations, turn off the switch of the servo motor 2, the switch of the pressurized air pump 12, and the switch of the pressurized water pump 20. If not used for a long time, simply disconnect the external power supply. This completes the use of the circulating aeration device for sewage treatment.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A circulating aeration device for wastewater treatment, characterized in that: include Aeration frame (1), the main body used for aeration installation; Servo motor (2) is fixedly installed above aeration frame (1) and a transmission rod (3) is fixedly installed at the output end. A first stirring plate (4) is fixedly installed at the other end of the transmission rod (3). A second stirring plate (5) is fixedly installed at the bottom of the first stirring plate (4). Water-dividing oblique teeth (6) are fixedly installed on the outside of both the first stirring plate (4) and the second stirring plate (5). The first side support plate (11) is fixedly installed on the bottom right side of the aeration frame (1) for the fixed installation of a pressurizing air pump (12) on the top. An air extraction pipe (13) is fixedly installed on the outside of the pressurizing air pump (12). An air delivery pipe (14) is fixedly installed at the output end of the pressurizing air pump (12). A diversion pipe (15) is fixedly installed at the other end of the air delivery pipe (14). An aeration pipe (16) is fixedly installed on the outside of the first side support plate (11). An aeration nozzle (17) is fixedly installed on the outside of the aeration pipe (16). The second side support plate (18) is fixedly installed on the bottom left side of the aeration frame (1) for fixing a water storage box (19) on top, and a booster water pump (20) is fixedly installed on top of the water storage box (19). The output end of the booster water pump (20) is fixedly connected to a separation delivery pipe (21).

2. The circulating aeration device for wastewater treatment according to claim 1, characterized in that: The number of water-dividing oblique teeth (6) is set to multiple, and the multiple water-dividing oblique teeth (6) are distributed at equal intervals on the first stirring plate (4) and the second stirring plate (5).

3. The circulating aeration device for wastewater treatment according to claim 1, characterized in that: The bottom of the second mixing plate (5) is fixedly installed with a bottom mixing plate (7), and the top two sides of the bottom mixing plate (7) are threaded with fixing bolts (8).

4. A circulating aeration device for wastewater treatment according to claim 3, characterized in that: The bottom end of the fixing bolt (8) is threadedly connected to a stirring rod (9), and the outside of the stirring rod (9) is fixedly installed with inclined stirring blades (10).

5. A circulating aeration device for wastewater treatment according to claim 1, characterized in that: The number of aeration nozzles (17) is set to multiple, and the multiple aeration nozzles (17) are distributed at equal intervals on the aeration pipe (16). The tail end of the aeration pipe (16) is fixedly connected to the other end of the air supply pipe (14).

6. A circulating aeration device for wastewater treatment according to claim 1, characterized in that: The other end of the separation and conveying pipe (21) is fixedly connected to a water vapor pipe (22), and a water aeration nozzle (23) is fixedly installed on the outside of the water vapor pipe (22).

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