Hybrid air floatation sewage treatment device

Abstract

The application discloses a mixed air floatation sewage treatment device, and relates to the technical field of sewage treatment.The device comprises a treatment box, a partition I and a partition II are fixed in the treatment box, the partition I and the inner wall of one side of the treatment box form an air floatation chamber, a belt pulley mechanism is installed on the treatment box, a connecting frame is installed on a rotating frame through an elastic connecting assembly, a slag collecting net basket is fixed on the connecting frame, and a floating plate is installed on the connecting frame through an adjusting assembly.The slag collecting net basket is rotated to a vertical state through the switching assembly, and floating slag floating on the liquid surface in the treatment box is collected and salvaged.The slag collecting net basket is rotated to a horizontal state after the floating slag is collected into the floating slag groove plate, one-way scraping effect of the floating slag groove plate on the floating slag is realized, disturbance to the liquid surface is greatly reduced, the collecting effect of the floating slag is effectively improved, and the separation and removal effect of the floating slag is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically a hybrid air flotation wastewater treatment device. Background Technology

[0002] Air flotation (AF) equipment is a water treatment device used for solid-liquid separation. Its core principle is to use buoyancy to separate suspended particles from wastewater. AF equipment has wide applications in engineering and basic scientific research, environmental protection technology research and development, agricultural waste resource utilization technology promotion, and environmental protection technology promotion. It is used in wastewater treatment in industries such as petroleum, chemical, papermaking, textile, printing and dyeing, electroplating, leather making, food and beverage, and seawater desalination. It can remove pollutants such as grease, suspended solids, and colloids from wastewater, and can also be used for algae removal and turbidity reduction in waterworks. The separation mechanism of AF equipment involves generating a large number of microbubbles in water through a dissolved air and release system. These microbubbles adhere to solid or liquid particles in the wastewater with a density close to that of water, creating a state where the overall density is less than that of water. Buoyancy then causes these particles to rise to the surface, thus achieving solid-liquid separation.

[0003] In the process of using air flotation equipment, microbubbles are released through a gas release system and combine with particles in the liquid. The resulting scum is scraped off by a scraping mechanism. However, current air flotation equipment cannot perform unidirectional scraping, which easily causes significant disturbance to the scum, making it difficult for the scum to fully aggregate and be separated, thus hindering the improvement of scum separation and removal efficiency. To address the above-mentioned technical defects of existing technologies, a hybrid air flotation wastewater treatment device is provided to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a hybrid air flotation wastewater treatment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A hybrid dissolved air flotation (DAF) wastewater treatment device includes a treatment tank. Partition I and Partition II are fixed inside the treatment tank. Partition I forms a flotation chamber with one inner wall of the treatment tank, and Partition II forms a removal chamber with the other inner wall of the treatment tank. A dissolved air tank is fixed outside the treatment tank, and a gas collecting pipe is connected to the dissolved air tank. Several gas release heads connected to the gas collecting pipe are installed in the flotation chamber. A scum trough plate is fixed to the top of Partition II. A filter screen plate corresponding to the removal chamber is embedded on one side of the scum trough plate. A slope plate is fixed to the top of the scum trough plate. A pulley mechanism is installed on the treatment tank. A sliding frame slidably connected to the treatment tank is fixed to the conveyor belt of the pulley mechanism. A steering shaft is rotatably installed on the sliding frame. A switching disc is fixedly sleeved on the steering shaft. A rotating frame is fixed on the switching disc. A connecting frame is installed on the rotating frame via an elastic connecting component. A scum collection basket is fixed on the connecting frame. A float plate is installed on the connecting frame via an adjusting component. A switching component for driving the steering shaft to rotate is installed on the treatment tank.

[0007] As an improvement of the present invention: the switching assembly includes a steering plate fixed to the end of the steering shaft, and the side wall of the processing box is fixed with a stop post I and a stop post II that are linearly corresponding to the steering plate, and the stop post I and the stop post II are respectively located on both sides of the steering plate.

[0008] As an improvement of the present invention: the switching assembly further includes a sleeve block fixed on the sliding frame, an isosceles trapezoidal locking block slidably mounted on the sleeve block, a push spring fixed between the isosceles trapezoidal locking block and the sleeve block, and two V-shaped positioning grooves adapted to engage with the isosceles trapezoidal locking block are provided on the switching disk, the two V-shaped positioning grooves are distributed at ninety degrees along the circumference of the switching disk.

[0009] As an improvement of the present invention: two stop blocks are fixed on the switching disk, the two stop blocks are respectively located on one side of the two V-shaped positioning grooves, and the isosceles trapezoidal block is located between the two stop blocks.

[0010] As an improvement of the present invention: the elastic connection assembly includes a guide block slidably mounted on the rotating frame, a connecting spring fixed between the guide block and the rotating frame, and an extension plate fixed between the guide block and the connecting frame.

[0011] As an improvement of the present invention: the adjusting assembly includes a threaded sleeve fixed on the connecting frame, an adjusting rod rotatably mounted on the adjusting frame is threadedly connected to the threaded sleeve, and a guide collar for the adjusting frame to slide through is fixed on the connecting frame.

[0012] As an improvement of the present invention: a guide frame is fixed on the steering shaft, the adjusting rod slides through the guide frame, and a handwheel is fixed to the end of the adjusting rod.

[0013] As an improvement of the present invention: a servo motor for driving the pulley mechanism is fixed on the processing box, a threaded rod is coaxially fixed on the output shaft of the servo motor, a threaded sleeve block is threadedly sleeved on the threaded rod, a toggle plate that is slidably connected to the processing box is fixed on the threaded sleeve block, and a slag scraper is fixed on the toggle plate, the slag scraper being slidably installed in the slag trough plate.

[0014] As an improvement of the present invention: a slag discharge pipe connected to the slag trough plate is installed on the side wall of the treatment tank, and a sewage discharge pipe connected to the impurity removal chamber is opened on the side wall of the treatment tank. A gas release pipe is installed in the impurity removal chamber, and the gas release pipe is connected to the dissolved gas tank through a gas transmission pipe.

[0015] As an improvement of the present invention: a conveying pump is installed on the processing tank, the outlet end of the conveying pump is connected to the air flotation chamber, and the inlet end of the conveying pump is connected to the area of ​​the processing tank located between partition I and partition II.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention uses a sliding frame that moves linearly back and forth relative to the treatment tank. By switching components, the scum collection basket rotates to a vertical position to collect and remove scum floating on the liquid surface inside the treatment tank. After the scum is collected inside the scum trough plate, the scum collection basket rotates to a horizontal position, which greatly promotes the scum falling from the scum collection basket into the scum trough plate. When the scum trough plate moves towards the flotation chamber, it is in a horizontal position and does not contact the liquid surface, achieving a one-way scraping effect of the scum on the scum. This greatly reduces the disturbance to the liquid surface and effectively improves the scum collection effect. By repeatedly scraping the scum in the scum trough plate with a scraper, the scum separation and removal effect is significantly improved.

[0018] 2. This invention uses a rotating handwheel to drive the adjusting rod to rotate, which in turn causes the threaded sleeve to move the connecting frame relative to the adjusting frame. This allows the distance between the lower end of the slag collection basket and the float plate to be adjusted when the slag collection basket is in a vertical position. In other words, the range of the slag collection basket extending below the liquid surface in the treatment tank can be adjusted, which facilitates flexible adjustment according to the thickness of the slag and ensures that the slag collection basket can fully remove the slag. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 A structural diagram from a certain perspective;

[0021] Figure 3 This is a schematic diagram of the gas collecting pipe and gas releasing head in this invention;

[0022] Figure 4 This is a partial structural diagram of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged diagram of section A in the middle;

[0024] Figure 6 For the present invention Figure 4 A structural diagram from a certain perspective;

[0025] Figure 7 This is a schematic diagram showing the connection of components such as the slag collection basket, float, connecting frame, and adjusting assembly in this invention;

[0026] Figure 8 This is a schematic diagram showing the connection of components such as the rotating frame, switching disk, isosceles trapezoidal locking block, and sleeve block in this invention;

[0027] Figure 9 For the present invention Figure 1 A schematic diagram of a partial structure;

[0028] Figure 10 This is a schematic diagram showing the connection of components such as the scum trough plate, the actuating plate, the threaded rod, the threaded sleeve block, and the servo motor in this invention.

[0029] In the diagram: 1-Processing tank, 2-Air flotation chamber, 3-Scum trough, 4-Impurity removal chamber, 5-Dissolved gas tank, 6-Gas supply pipe, 7-Gas collection pipe, 8-Scum collection basket, 9-Pulley mechanism, 10-Servo motor, 11-Float plate, 12-Steering shaft, 13-Steering plate, 14-Stop column I, 15-Stop column II, 16-Sliding frame, 17-Slope plate, 18-Actuating plate, 19-Threaded rod, 20-Scum scraper, 21-Stop block, 22-Rotating frame, 23-Switching disc, 24-Adjustment 25-Adjusting frame, 26-Guide frame, 27-Connecting frame, 28-Threaded sleeve, 29-Extension plate, 30-Guide block, 31-Sleeve block, 32-Connecting spring, 33-V-shaped positioning groove, 34-Isosceles trapezoidal locking block, 35-Pushing spring, 36-Gas release pipe, 37-Slag discharge pipe, 38-Sewage discharge pipe, 39-Baffle II, 40-Filter screen plate, 41-Handwheel, 42-Baffle I, 43-Gas release head, 44-Transfer pump, 45-Guide collar, 46-Threaded sleeve block. Detailed Implementation

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present 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, and therefore should not be construed as a limitation of the present invention.

[0031] First embodiment: Please refer to the appendix Figure 1 - Appendix Figure 10 A hybrid air flotation wastewater treatment device includes a treatment tank 1. Partition I42 and partition II39 are fixed inside the treatment tank 1. Partition I42 and one inner wall of the treatment tank 1 form an air flotation chamber 2. Partition II39 and the other inner wall of the treatment tank 1 form a cleanup chamber 4. A dissolved air tank 5 is fixed outside the treatment tank 1. A gas collecting pipe 7 is connected to the dissolved air tank 5. Several gas release heads 43 connected to the gas collecting pipe 7 are installed inside the air flotation chamber 2.

[0032] The gas inside the dissolved gas tank 5 is dispersed into multiple gas release heads 43 through the gas collection pipe 7. The gas release heads 43 generate a large number of microbubbles in the water, which adhere to solid or liquid particles in the wastewater with a density close to that of water, resulting in an overall density less than that of water. The particles then rise to the surface of the water by buoyancy, thereby achieving solid-liquid separation.

[0033] Among them, a scum trough plate 3 is fixed on the top of the partition II 39, and a filter screen plate 40 corresponding to the impurity removal chamber 4 is embedded on one side of the scum trough plate 3. A slope plate 17 is fixed on the top of the scum trough plate 3. A pulley mechanism 9 is installed on the processing box 1. A sliding frame 16 that is slidably connected to the processing box 1 is fixed on the conveyor belt of the pulley mechanism 9. A steering shaft 12 is rotatably installed on the sliding frame 16. A switching disk 23 is fixedly sleeved on the steering shaft 12. A rotating frame 22 is fixed on the switching disk 23. A connecting frame 27 is installed on the rotating frame 22 through an elastic connecting component. A scum collection basket 8 is fixed on the connecting frame 27. A float plate 11 is installed on the connecting frame 27 through an adjusting component. A switching component for driving the rotation of the steering shaft 12 is installed on the processing box 1.

[0034] The conveyor belt of the pulley mechanism 9 performs linear conveying, and the conveyor belt drives the sliding frame 16 to slide back and forth, so that the steering shaft 12 on the sliding frame 16 moves linearly. When the slag collection basket 8 slides towards the impurity removal chamber 4, it is in a vertical state to scoop up the slag in the treatment box 1 and move it into the slag trough plate 3, so as to achieve the effect of scooping up and collecting the slag.

[0035] Specifically, the switching assembly includes a steering plate 13 fixed to the end of the steering shaft 12, and a stop post I14 and a stop post II15 linearly corresponding to the steering plate 13 are fixed on the side wall of the processing box 1. The stop post I14 and the stop post II15 are located on both sides of the steering plate 13, respectively.

[0036] With the above settings, when the sliding frame 16 moves toward the flotation chamber 2, the slag collection basket 8 is in a horizontal state. At this time, the slag collection basket 8 does not contact the slag. When the turning plate 13 pushes against the baffle I14, the turning plate 13 drives the turning shaft 12 to rotate, causing the switching plate 23 and the rotating frame 22 to rotate, so that the slag collection basket 8 is in a vertical state. Then the sliding frame 16 moves toward the impurity removal chamber 4. During this process, the slag collection basket 8 extends below the liquid surface of the treatment tank 1 and collects and removes the slag. When the turning plate 13 moves to abut against the baffle II15, the turning plate 13 drives the turning shaft 12 to rotate in the opposite direction to achieve a reset. At this time, the slag collection basket 8 is in a horizontal state, and the slag inside the slag collection basket 8 can fall into the slag trough plate 3 for collection.

[0037] In addition, the switching assembly includes a sleeve block 31 fixed on the sliding frame 16. An isosceles trapezoidal locking block 34 is slidably mounted on the sleeve block 31. A push spring 35 is fixed between the isosceles trapezoidal locking block 34 and the sleeve block 31. Two V-shaped positioning grooves 33 are provided on the switching disk 23 to engage and fit with the isosceles trapezoidal locking block 34. The two V-shaped positioning grooves 33 are distributed at a 90-degree angle along the circumference of the switching disk 23. Two stop blocks 21 are fixed on the switching disk 23. The two stop blocks 21 are located on one side of the two V-shaped positioning grooves 33, and the isosceles trapezoidal locking block 34 is located between the two stop blocks 21.

[0038] Through the above structural design, during the rotation of the steering plate 13 by the push of the stop column I14 or the stop column II15, the isosceles trapezoidal locking block 34 can be locked in the corresponding V-shaped positioning groove 33. Under the elastic pushing action of the push spring 35, the isosceles trapezoidal locking block 34 is reliably positioned on the switching disk 23, ensuring that the slag collection basket 8 can remain stable whether it is in a horizontal or vertical state, thus realizing the stable dredging and treatment of floating slag.

[0039] In addition, during the rotation of the switching disc 23, when the slag collection basket 8 is in a horizontal or vertical state, the two stop blocks 21 and the isosceles trapezoidal locking block 34 are engaged and limited to prevent the switching disc 23 from rotating excessively and to ensure the accurate positioning of the slag collection basket 8.

[0040] Second embodiment: Please refer to the appendix Figure 1 - Appendix Figure 10In addition to the first embodiment, the elastic connection component of this device includes a guide block 30 that is slidably mounted on the rotating frame 22, a connecting spring 32 that is fixed between the guide block 30 and the rotating frame 22, and an extension plate 29 that is fixed between the guide block 30 and the connecting frame 27.

[0041] When the slag collection basket 8 is in a vertical position, the float plate 11 floats on the liquid surface of the treatment tank 1, which plays a role in positioning the vertical position of the slag collection basket 8 and ensures that the slag collection basket 8 can achieve the effect of slag retrieval when it moves.

[0042] The adjusting assembly includes a threaded sleeve 28 fixed on a connecting frame 27, with an adjusting rod 24 rotatably mounted on an adjusting frame 25 threadedly connected to the threaded sleeve 28. A guide ring 45 is fixed on the connecting frame 27 for the adjusting frame 25 to slide through. A guide frame 26 is fixed on the steering shaft 12, and the adjusting rod 24 slides through the guide frame 26. A handwheel 41 is fixed to the end of the adjusting rod 24.

[0043] By turning the handwheel 41, the adjusting rod 24 is rotated. The adjusting rod 24 is threadedly engaged with the threaded sleeve 28, which causes the adjusting rod 24 to move relative to the connecting frame 27. That is, the float 11 can slide relative to the connecting frame 27, and the distance between the float 11 and the lower end of the slag collection basket 8 is adjusted. This ensures that the slag collection basket 8 can be flexibly adjusted according to the liquid level and the thickness of the slag, so as to fully remove and process the slag.

[0044] Additionally, a servo motor 10 for driving the pulley mechanism 9 is fixed on the processing box 1. A threaded rod 19 is coaxially fixed to the output shaft of the servo motor 10. A threaded sleeve block 46 is threadedly sleeved on the threaded rod 19. An actuating plate 18 that is slidably connected to the processing box 1 is fixed on the threaded sleeve block 46. A slag scraper 20 is fixed on the actuating plate 18 and is slidably installed inside the scum trough plate 3. A slag discharge pipe 37 communicating with the scum trough plate 3 is installed on the side wall of the processing box 1. A sewage discharge pipe 38 communicating with the impurity removal chamber 4 is opened on the side wall of the processing box 1. A gas release pipe 36 is installed in the impurity removal chamber 4 and is connected to the dissolved gas tank 5 through a gas transmission pipe 6.

[0045] The servo motor 10 drives the pulley of the belt pulley mechanism 9 to rotate forward or backward. Simultaneously, the servo motor 10 drives the threaded rod 19 to rotate forward or backward. The threaded rod 19 and the pulley of the belt pulley mechanism 9 are coaxially fixed. At this time, the actuating plate 18 drives the scraper plate 20 to scrape the scum in the scum trough plate 3. The scum in the scum trough plate 3 is filtered by the filter screen plate 40, further improving the scum separation effect. The scum scraped by the scraper plate 20 is discharged from the scum discharge pipe 37.

[0046] The venting pipe 36 also releases a large number of microbubbles, which adhere to solid or liquid particles in the wastewater with a density close to that of water, resulting in an overall density less than that of water. The particles rise to the surface of the impurity removal chamber 4 due to buoyancy. The agitator 18 moves with the scraper 20 and scrapes the scum on the surface of the impurity removal chamber 4. The scum is then discharged from the drain pipe 38.

[0047] In addition, a transfer pump 44 is installed on the treatment tank 1. The outlet end of the transfer pump 44 is connected to the flotation chamber 2, and the inlet end of the transfer pump 44 is connected to the area of ​​the treatment tank 1 located between partition I42 and partition II39. The transfer pump 44 can transport the sewage in the treatment tank 1 into the flotation chamber 2, so that the sewage scraped away from the flotation chamber 2 by the scum collection basket 8 can be replenished, ensuring that the liquid level in the flotation chamber 2 is not lower than the area outside the flotation chamber 2 in the treatment tank 1, so that the scum can be fully scraped off by the scum collection basket 8.

[0048] In summary, this invention uses a sliding frame 16 to move linearly back and forth relative to the treatment tank 1. By switching components, the scum collection basket 8 is rotated to a vertical position to collect and remove the scum floating on the liquid surface inside the treatment tank 1. After the scum is collected inside the scum trough plate 3, the scum collection basket 8 rotates to a horizontal position, which greatly promotes the scum falling from the scum collection basket 8 into the scum trough plate 3. When the scum trough plate 3 moves towards the flotation chamber 2, it is in a horizontal position and does not contact the liquid surface, achieving a one-way scraping effect of the scum on the scum. This greatly reduces the disturbance to the liquid surface and effectively improves the scum collection effect. By repeatedly scraping the scum in the scum trough plate 3 with the scraper plate 20, the scum separation and removal effect is significantly improved. This invention uses a rotating handwheel 41 to drive the adjusting rod 24 to rotate, which causes the threaded sleeve 28 to move the connecting frame 27 relative to the adjusting frame 25. This allows the distance between the lower end of the slag collection basket 8 and the float plate 11 to be adjusted when the slag collection basket 8 is in a vertical position. In other words, the range of the slag collection basket 8 extending below the liquid surface of the treatment tank 1 can be adjusted, which facilitates flexible adjustment according to the thickness of the slag and ensures that the slag collection basket 8 can fully remove the slag.

[0049] The above are merely preferred embodiments of the present invention and are 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. A hybrid air flotation wastewater treatment device, comprising a treatment tank (1), wherein a partition I (42) and a partition II (39) are fixed inside the treatment tank (1), the partition I (42) and one side inner wall of the treatment tank (1) forming an air flotation chamber (2), and the partition II (39) and the other side inner wall of the treatment tank (1) forming a cleaning chamber (4), characterized in that, A dissolved gas tank (5) is fixed outside the treatment box (1). A gas collecting pipe (7) is connected to the dissolved gas tank (5). Several gas release heads (43) connected to the gas collecting pipe (7) are installed inside the flotation chamber (2). A scum trough plate (3) is fixed to the top of the partition plate II (39). A filter screen plate (40) corresponding to the impurity removal chamber (4) is embedded on one side of the scum trough plate (3). A slope plate (17) is fixed to the top of the scum trough plate (3). A pulley mechanism (9) is installed on the treatment box (1). The conveyor belt of the pulley mechanism (9) is connected to the scum trough plate (9). A sliding frame (16) is fixedly connected to the processing box (1). A steering shaft (12) is rotatably mounted on the sliding frame (16). A switching disk (23) is fixedly sleeved on the steering shaft (12). A rotating frame (22) is fixed on the switching disk (23). A connecting frame (27) is mounted on the rotating frame (22) through an elastic connecting component. A slag collection basket (8) is fixed on the connecting frame (27). A float plate (11) is mounted on the connecting frame (27) through an adjusting component. A device for driving the steering shaft is installed on the processing box (1). (12) A rotating switching assembly, the switching assembly including a steering plate (13) fixed to the end of the steering shaft (12), and a stop post I (14) and a stop post II (15) linearly corresponding to the steering plate (13) fixed on the side wall of the processing box (1), the stop post I (14) and the stop post II (15) being located on both sides of the steering plate (13), the switching assembly also including a sleeve block (31) fixed on the sliding frame (16), and an isosceles trapezoidal locking block (34) slidably mounted on the sleeve block (31). (34) A push spring (35) is fixed between the sleeve block (31). The switching disk (23) has two V-shaped positioning grooves (33) that are adapted to engage with the isosceles trapezoidal locking block (34). The two V-shaped positioning grooves (33) are distributed at ninety degrees along the circumference of the switching disk (23). The switching disk (23) has two stop blocks (21) fixed on it. The two stop blocks (21) are located on one side of the two V-shaped positioning grooves (33). The isosceles trapezoidal locking block (34) is located between the two stop blocks (21).

2. The hybrid air flotation wastewater treatment device according to claim 1, characterized in that, The elastic connection assembly includes a guide block (30) slidably mounted on the rotating frame (22), a connecting spring (32) fixed between the guide block (30) and the rotating frame (22), and an extension plate (29) fixed between the guide block (30) and the connecting frame (27).

3. The hybrid air flotation wastewater treatment device according to claim 2, characterized in that, The adjustment assembly includes a threaded sleeve (28) fixed on the connecting frame (27), an adjustment rod (24) rotatably mounted on the adjustment frame (25) is threaded onto the threaded sleeve (28), and a guide collar (45) is fixed on the connecting frame (27) for the adjustment frame (25) to slide through.

4. The hybrid air flotation wastewater treatment device according to claim 3, characterized in that, A guide frame (26) is fixed on the steering shaft (12), and the adjusting rod (24) slides through the guide frame (26). A handwheel (41) is fixed to the end of the adjusting rod (24).

5. A hybrid air flotation wastewater treatment device according to claim 1, characterized in that, The processing box (1) is fixed with a servo motor (10) for driving the pulley mechanism (9). The output shaft of the servo motor (10) is coaxially fixed with a threaded rod (19). A threaded sleeve block (46) is threaded onto the threaded rod (19). A toggle plate (18) that is slidably connected to the processing box (1) is fixed on the threaded sleeve block (46). A slag scraper (20) is fixed on the toggle plate (18). The slag scraper (20) is slidably installed in the scum trough plate (3).

6. A hybrid air flotation wastewater treatment device according to claim 1, characterized in that, The side wall of the treatment box (1) is equipped with a slag discharge pipe (37) that communicates with the slag trough plate (3), and the side wall of the treatment box (1) is provided with a sewage discharge pipe (38) that communicates with the impurity removal chamber (4). The impurity removal chamber (4) is equipped with a gas release pipe (36), and the gas release pipe (36) is connected to the dissolved gas tank (5) through a gas transmission pipe (6).

7. A hybrid air flotation wastewater treatment device according to claim 1, characterized in that, The processing tank (1) is equipped with a transfer pump (44), the outlet end of which is connected to the air flotation chamber (2), and the inlet end of which is connected to the area of ​​the processing tank (1) between partition I (42) and partition II (39).

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