A purification device for perfume production wastewater treatment by air floatation method and a purification method thereof

Abstract

This invention discloses an air flotation purification device and method for treating perfume production wastewater, belonging to the field of wastewater treatment technology. The invention includes a purification tank and a partition plate installed inside the tank, dividing the tank into a working area and a solid impurity collection area. An air supply pipe is installed on the purification tank, with an air outlet at one end extending into the tank. A servo motor is fixedly installed on the side of the tank, driving the rotation of transmission rollers. Multiple transmission rollers are connected by chains and sprockets. This air flotation purification device and method for perfume production wastewater treatment uses a movable collection hopper to collect solid impurities floating on the water surface. Simultaneously, during movement, the solid impurities in the collection hopper are squeezed, squeezing out the wastewater adsorbed within them, thus avoiding poor solid-liquid separation caused by the adsorption of wastewater by the solid impurities.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an air flotation purification device and method for treating perfume production wastewater. Background Technology

[0002] With the rapid development of the perfume, cosmetics and fine chemical industries, the problem of wastewater treatment generated during their production process has become increasingly serious. The water quality of perfume production wastewater is special and the composition is complex, containing various solid impurities. In order to facilitate the treatment of wastewater during perfume production, a large number of microbubbles are usually introduced into the water or generated, so that the solid impurities in the wastewater float to the surface by buoyancy, thereby achieving solid-liquid separation.

[0003] For example, Chinese patent with announcement number CN118894570B, patent title: "An air flotation purification device and purification method for industrial wastewater treatment", and announcement date: 2025-04-04, includes: a device shell, a first water outlet pipe fixedly connected to the inner wall of the device shell, a receiving frame fixedly connected to the inner wall of the device shell near the top opening, a second water outlet pipe fixedly connected to the inner wall of the receiving frame, and the second water outlet pipe fixedly connected to the inner wall of the device shell. By rotating the adjusting rod, the height of the support frame can be changed accordingly, and then the height of the sliding block can be changed accordingly through the partition plate, ultimately changing the height of the claw bucket. The height of the claw bucket can be adjusted according to the depth of suspended matter on the liquid surface, thereby effectively collecting suspended matter on the liquid surface.

[0004] The existing technology has the following technical problems: When treating wastewater, the existing purification device collects solid impurities floating on the water surface through a movable claw bucket to automatically separate suspended solids from wastewater. However, solid impurities in wastewater are often hygroscopic. After being soaked in wastewater, they easily absorb a lot of wastewater. When the solid impurities are stored in a centralized manner, the water absorbed by the solid impurities is not treated. As a result, a large amount of wastewater drips during the subsequent transportation of the solid impurities, which causes secondary pollution to the environment.

[0005] Therefore, we propose an air flotation purification device and method for treating perfume production wastewater to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide an air flotation purification device and method for treating perfume production wastewater, in order to solve the problem mentioned in the background art. Currently available purification devices on the market collect solid impurities floating on the water surface using a movable claw bucket to automatically separate suspended solids from wastewater. However, these solid impurities are often hygroscopic; after being soaked in wastewater, they easily absorb a large amount of wastewater. When these solid impurities are subsequently stored, the absorbed water is not treated, leading to significant wastewater dripping during transport and causing secondary pollution.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a flotation purification device for perfume production wastewater treatment, comprising a purification tank and a partition plate installed inside the purification tank, the partition plate dividing the purification tank into a working area and a solid impurity collection area, an air supply pipe installed on the purification tank, and an air outlet provided at one end of the air supply pipe extending into the purification tank, a servo motor fixedly installed on the side of the purification tank, the servo motor driving the rotation of transmission rollers, multiple transmission rollers being transmitted through chains and sprockets, a transmission belt sleeved on the outer side of the transmission rollers, and a collection bucket installed on the transmission belt, the collection bucket being used to retrieve impurities floating on the liquid surface in the working area of ​​the purification tank, the collection bucket having a water leakage hole for discharging the retrieved water, and a squeezing component installed on the collection bucket for squeezing out the water adsorbed in the solid impurities.

[0008] Preferably, the air supply pipe is connected to the aeration equipment, and multiple air outlets are evenly distributed at one end of the air supply pipe that extends into the working area inside the purification tank.

[0009] By adopting the above technical solution, air is supplied to the inside of the air supply pipe through the aeration equipment, and airflow is sprayed out from the outlet to generate bubbles. The suspended matter combines with the bubbles and rises to the liquid surface.

[0010] Preferably, one end of the collecting hopper is configured as an open structure, and multiple collecting hoppers are evenly distributed on the transmission belt, with each collecting hopper having a drainage hole.

[0011] By adopting the above technical solution, the collection bucket can be rotated synchronously through the transmission belt, and the solid impurities floating on the water surface can be retrieved by the transmission of the collection bucket.

[0012] Preferably, the extrusion component includes a closed cover installed at the opening end of the collection hopper, and the closed cover is connected to the collection hopper by a return spring. A pressure-bearing column is fixed to the lower side of the closed cover, and the pressure-bearing column can contact the extrusion plate fixed on the purification tank when it moves with the transmission belt.

[0013] By adopting the above technical solution, the collecting hopper and the closing cover are connected to each other by a return spring. After the closing cover loses its squeezing force, the return spring can provide the closing cover with a restoring elastic force.

[0014] Preferably, the sealing cover is slidable on the collection hopper, and the end of the pressure column at the lower end of the sealing cover facing the extrusion plate is spherical, and the longitudinal section of the extrusion plate is an isosceles trapezoidal structure.

[0015] By adopting the above technical solution, the sliding of the cover on the collection hopper can block impurities inside the collection hopper when the collection hopper rotates above the transmission belt, thus preventing impurities from leaking out.

[0016] Preferably, a receiving plate is installed inside the collection hopper, and the receiving plate is connected to the collection hopper by an auxiliary spring. A limiting frame fixed in the middle of the receiving plate extends out of the collection hopper, and a guide magnetic block is fixedly connected to the end of the limiting frame. When the guide magnetic block at the end of the limiting frame moves with the transmission belt, it can approach the guide magnetic block fixed on the inner wall of the purification tank. The surfaces of the guide magnetic block and the guide magnetic block that are opposite to each other have the same magnetic polarity.

[0017] By adopting the above technical solution, the guide magnetic blocks on the limiting frame and the guide magnetic blocks on the inner wall of the purification tank approach each other, thereby using repulsive magnetic force to make the limiting frame drive the accommodating plate to move synchronously.

[0018] Preferably, the receiving plate forms an elastic telescopic structure through an auxiliary spring and a collecting hopper, and the receiving plate is in contact with the collecting hopper in the initial state.

[0019] By adopting the above technical solution, the receiving plate can collide with the collection hopper by reciprocating inside the collection hopper.

[0020] Preferably, a power cylinder is fixed to the side of the purification tank, and a push rod is installed at the telescopic end of the power cylinder. The end of the push rod facing the guide magnetic block is spherical, and the cross-section of the guide magnetic block is a right-angled triangular structure.

[0021] By adopting the above technical solution, the push rod is moved by controlling the power cylinder, thereby squeezing the guide magnetic block by using the spherical end of the push rod.

[0022] Another technical solution provided by this invention is a purification method for a flotation purification device used in perfume production wastewater treatment, comprising the following steps:

[0023] Step 1: The wastewater to be treated is introduced into the working area inside the purification tank, and airflow is delivered into the air supply pipe through the aeration equipment. The delivered airflow is blown out through the air outlet to generate bubbles. The suspended solids combine with the bubbles and rise to the liquid surface.

[0024] Step 2: The transmission roller and transmission belt are controlled by a servo motor. The movement of the transmission belt enables the collection bucket on it to move synchronously. When the collection bucket moves, it can pick up the solid impurities floating on the liquid surface. At the same time, a water leakage hole is opened on the collection bucket, so that water can flow out through the water leakage hole during the retrieval process.

[0025] Step 3: As the floating solid impurities in the collection hopper continue to move upward with the conveyor belt, the spherical end of the pressure column below the sealing cover at the opening of the collection hopper gradually comes into contact with the inclined edge of the extrusion plate. The inclined edge of the extrusion plate can squeeze the pressure column, causing the pressure column and the sealing cover to move upward. The movement of the sealing cover can seal the opening of the collection hopper, preventing solid impurities inside the collection hopper from leaking out during the transfer process. The sealing cover will remain in the state of sealing the collection hopper until the pressure column and the straight section of the extrusion plate come into contact with each other.

[0026] Step 4: While the closed cover is blocking the opening of the collection hopper, the push rod is moved towards the guide magnetic block at the end of the limiting frame by the power cylinder. After the spherical end of the push rod contacts and squeezes the inclined side of the guide magnetic block, it can push the guide magnetic block, causing the guide magnetic block and the limiting frame to move towards the closed cover. The limiting frame can drive the receiving plate inside the collection hopper to move. Through the movement of the receiving plate and the sealing of the opening of the collection hopper by the closed cover, the solid waste can be squeezed, thereby squeezing out the water adsorbed inside the solid waste.

[0027] Step 5: As the conveyor belt continues to run, the pressure column at the lower end of the closed cover disengages from the squeezing plate, and the closed cover resets under the action of the return spring, thus reopening the opening of the collection hopper. As the collection hopper continues to run and passes over the solid waste collection area, the solid waste inside the collection hopper can be poured into the solid waste collection area for centralized collection. When the collection hopper moves toward the solid waste collection area, the guide magnetic block at the end of the limit frame approaches the guide magnetic block on the inside side of the purification tank. At this time, the guide magnetic block generates a repulsive magnetic force on the guide magnetic block, causing the guide magnetic block, the limit frame, and the receiving plate to move toward the opening of the collection hopper. When the guide magnetic block at the end of the limit frame moves away from the guide magnetic block on the inside side of the purification tank, the receiving plate resets under the action of the auxiliary spring. Thus, the reciprocating movement of the receiving plate can collide with the collection hopper, and the vibration generated by the collision can reduce the adhesion of solid waste inside the collection hopper, making it easier for the waste to detach from the collection hopper.

[0028] Step 6: After the wastewater in the work area is treated by air flotation, the wastewater in the work area is discharged to the outside through the drain pipe on the purification tank.

[0029] Compared with the prior art, the beneficial effects of the present invention are: the air flotation purification equipment and purification method for perfume production wastewater treatment, by setting a movable collection bucket, can scoop up solid impurities floating on the water surface. At the same time, when moving, the solid impurities in the collection bucket can be squeezed, thereby squeezing out the wastewater adsorbed in the solid impurities, avoiding the solid impurities adsorbing wastewater and resulting in poor solid-liquid separation effect.

[0030] 1. By squeezing the lower end of the sealing cover with the pressure column through the squeezing plate, the sealing cover can be moved and the opening end of the collection hopper can be sealed. By sealing the collection hopper with the sealing cover, the leakage of solid impurities inside the collection hopper can be prevented during the transfer of solid impurities.

[0031] 2. By moving the push rod, the spherical end can be used to squeeze the guide magnetic block. After the guide magnetic block is pressed, the limiting frame and the accommodating plate can move towards the closing cover. Thus, the closing cover and the accommodating plate can squeeze the solid waste, so that the water adsorbed inside the solid waste can be automatically squeezed out.

[0032] 3. When the collection hopper and the limiting frame move with the transmission belt, the repulsive magnetic force between the guide magnetic block and the guide magnetic block enables the receiving plate to move back and forth inside the collection hopper. The vibration generated by the reciprocating movement of the receiving plate and its impact with the inside of the collection hopper reduces the adhesion of solid waste inside the collection hopper, making it easier for solid waste to detach from the collection hopper. Attached Figure Description

[0033] Figure 1 This is a frontal perspective view of the present invention;

[0034] Figure 2 This is a schematic diagram of the gas supply pipe and gas outlet structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the purification tank and partition plate structure of the present invention;

[0036] Figure 4 This is a schematic diagram of the collecting hopper and the drain hole structure of the present invention;

[0037] Figure 5 This is a schematic diagram of the guide magnetic block and the guiding magnetic block structure of the present invention;

[0038] Figure 6 This is a schematic diagram of the closed cover and pressure-bearing column structure of the present invention;

[0039] Figure 7This is a schematic diagram of the sealing cap and reset spring structure of the present invention;

[0040] Figure 8 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0041] Figure 9 This is a schematic diagram of the structure after the sealing cover of the present invention seals the collection hopper.

[0042] In the diagram: 1. Purification tank; 2. Partition plate; 3. Gas supply pipe; 4. Gas outlet; 5. Servo motor; 6. Transmission roller; 7. Transmission belt; 8. Collection hopper; 9. Drain hole; 10. Sealing cover; 11. Return spring; 12. Pressure column; 13. Squeezing plate; 14. Containing plate; 15. Auxiliary spring; 16. Limiting frame; 17. Guide magnet; 18. Power cylinder; 19. Push rod; 20. Guide magnet. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Example 1: Please refer to Figures 1-9Existing purification devices treat wastewater by collecting floating solids from the surface using a movable claw bucket to automatically separate suspended solids from wastewater. However, these solids are often hygroscopic, easily absorbing water after being soaked in the wastewater. When these solids are subsequently stored, the untreated water leads to significant wastewater dripping during transport, causing secondary pollution. To address this problem, this embodiment discloses the following technical content: a perfume production wastewater treatment... The air flotation purification equipment includes a purification tank 1 and a partition plate 2 installed inside the purification tank 1. The partition plate 2 divides the purification tank 1 into a working area and a solid impurity collection area. An air supply pipe 3 is installed on the purification tank 1, and an air outlet 4 is provided at one end of the air supply pipe 3 that extends into the purification tank 1. A servo motor 5 is fixedly installed on the side of the purification tank 1, and the servo motor 5 is used to drive the rotation of transmission rollers 6. Multiple transmission rollers 6 are connected by chains and sprockets. A transmission belt 7 is sleeved on the outside of the transmission rollers 6, and a collection hopper 8 is installed on the transmission belt 7. The collection hopper 8 is used to remove impurities floating on the liquid surface in the working area of ​​the purification tank 1. The collecting hopper 8 has a drain hole 9 for draining the collected water. A squeezing component is installed on the collecting hopper 8 to expel water adsorbed from solid impurities. An air supply pipe 3 is connected to an aeration device, and multiple air outlets 4 are evenly distributed at one end of the air supply pipe 3 extending into the working area inside the purification tank 1. One end of the collecting hopper 8 is open, and multiple collecting hoppers 8 are evenly distributed on the transmission belt 7, each with a drain hole 9. The squeezing component includes a sealing cover 10 installed at the open end of the collecting hopper 8, and the sealing cover 10 is connected to the collecting hopper 8 via a return spring 11. Next, a pressure column 12 is fixed to the lower side of the closed cover 10, and the pressure column 12 can contact the extrusion plate 13 fixed on the purification tank 1 when it moves with the transmission belt 7. The closed cover 10 can slide on the collection hopper 8, and the end of the pressure column 12 at the lower end of the closed cover 10 facing the extrusion plate 13 is set as a sphere. The longitudinal section of the extrusion plate 13 is set as an isosceles trapezoidal structure. A power cylinder 18 is fixed to the side of the purification tank 1, and a push rod 19 is installed at the telescopic end of the power cylinder 18. The end of the push rod 19 facing the guide magnetic block 17 is set as a sphere, and the cross section of the guide magnetic block 17 is set as a right-angled triangular structure.

[0045] The wastewater to be treated is introduced into the working area inside the purification tank 1, and airflow is delivered into the air supply pipe 3 through an aeration device. The delivered airflow is blown out through the air outlet 4, generating bubbles. Suspended solids combine with the bubbles and rise to the liquid surface. The servo motor 5 controls the operation of the transmission roller 6 and the transmission belt 7. The movement of the transmission belt 7 causes the collection hopper 8 on it to move synchronously. As the collection hopper 8 moves, it can scoop up solid impurities floating on the liquid surface. At the same time, a drainage hole 9 is opened on the collection hopper 8, allowing water to flow out through the drainage hole 9 during the scooping process. As the floating solid impurities collected in the collection hopper 8 continue to move upwards with the transmission belt 7, the spherical end of the pressure column 12 below the sealing cover 10 at the opening of the collection hopper 8 gradually comes into contact with the inclined side of the extrusion plate 13. The inclined side of the extrusion plate 13 can squeeze the pressure column 12, causing the pressure column 12 and the sealing cover 10 to move upwards. The movement of the sealing cover 10 can seal the opening of the collection hopper 8, preventing solid impurities inside the collection hopper 8 from leaking out during the transfer process. The sealing cover 10 remains in place until the pressure column 12 comes into contact with the straight section of the extrusion plate 13. In the blocked state, when the sealing cover 10 is blocking the opening of the collection hopper 8, the power cylinder 18 controls the push rod 19 to move towards the guide magnetic block 17 at the end of the limiting frame 16. After the spherical end of the push rod 19 contacts and presses against the inclined side of the guide magnetic block 17, it can push the guide magnetic block 17, causing the guide magnetic block 17 and the limiting frame 16 to move towards the sealing cover 10. The limiting frame 16 can drive the receiving plate 14 inside the collection hopper 8 to move. Through the movement of the receiving plate 14 and the sealing cover 10 blocking the opening of the collection hopper 8, solid waste can be squeezed. The pressure forces the water adsorbed inside the solid waste outwards. As the conveyor belt 7 continues to operate, the pressure column 12 at the lower end of the sealing cover 10 disengages from the squeezing plate 13. The sealing cover 10 is reset under the action of the return spring 11, thereby reopening the opening of the collection hopper 8. As the collection hopper 8 passes over the solid waste collection area with the continued operation of the conveyor belt 7, the solid waste inside the collection hopper 8 can be poured into the solid waste collection area for centralized collection. After the wastewater in the working area is treated by air flotation, the wastewater in the working area is discharged outwards through the drain pipe on the purification tank 1.

[0046] Example 2: The technical content disclosed in this example is a further improvement based on Example 1. In order to reduce the adhesion of solid impurities inside the collection hopper 8 and make it easier for solid impurities to detach from the collection hopper 8, such as... Figures 4-6As shown, the following technical content is disclosed in this embodiment: a receiving plate 14 is installed inside the collection hopper 8, and the receiving plate 14 is connected to the collection hopper 8 through an auxiliary spring 15. A limiting frame 16 fixed in the middle of the receiving plate 14 extends out of the collection hopper 8, and a guide magnetic block 17 is fixedly connected to the end of the limiting frame 16. When the guide magnetic block 17 at the end of the limiting frame 16 moves with the transmission belt 7, it can approach the guide magnetic block 20 fixed on the inner wall of the purification tank 1. The surfaces of the guide magnetic block 20 and the guide magnetic block 17 are arranged opposite to each other and have the same magnetic polarity. The receiving plate 14 and the collection hopper 8 form an elastic telescopic structure through the auxiliary spring 15, and the receiving plate 14 is in contact with the collection hopper 8 in the initial state.

[0047] When the collection hopper 8 moves toward the solid waste collection area, the guide magnetic block 17 at the end of the limiting frame 16 approaches the guide magnetic block 20 on the inner side of the purification tank 1. At this time, the guide magnetic block 20 generates a repulsive magnetic force on the guide magnetic block 17, causing the guide magnetic block 17, the limiting frame 16, and the receiving plate 14 to move toward the opening of the collection hopper 8. When the guide magnetic block 17 at the end of the limiting frame 16 moves away from the guide magnetic block 20 on the inner side of the purification tank 1, the receiving plate 14 is reset under the action of the auxiliary spring 15. Thus, the reciprocating movement of the receiving plate 14 can collide with the collection hopper 8. The vibration generated by the collision can reduce the adhesion of solid waste inside the collection hopper 8, making it easier for the waste to detach from the collection hopper 8.

[0048] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0049] 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 flotation purification device for treating perfume production wastewater, comprising a purification tank (1) and a partition plate (2) installed inside the purification tank (1), the partition plate (2) dividing the purification tank (1) into a working area and a solid impurity collection area, wherein an air supply pipe (3) is installed on the purification tank (1), and an air outlet (4) is provided at one end of the air supply pipe (3) extending into the purification tank (1), characterized in that: A servo motor (5) is fixedly installed on the side of the purification tank (1), and the servo motor (5) is used to drive the transmission roller (6) to rotate. Multiple transmission rollers (6) are driven by chains and sprockets. A transmission belt (7) is sleeved on the outside of the transmission roller (6), and a collection bucket (8) is installed on the transmission belt (7). The collection bucket (8) is used to retrieve impurities floating on the liquid surface of the working area of ​​the purification tank (1). A water leakage hole (9) is opened on the collection bucket (8), and the water leakage hole (9) is used to discharge the retrieved water source. A squeezing component is installed on the collection bucket (8), and the squeezing component is used to squeeze out the water source adsorbed in the solid impurities. The extrusion component includes a closed cover (10) installed at the opening end of the collection hopper (8), and the closed cover (10) is connected to the collection hopper (8) by a return spring (11). A pressure column (12) is fixed on the lower side of the closed cover (10), and the pressure column (12) can contact the extrusion plate (13) fixed on the purification tank (1) when it moves with the transmission belt (7). The closing cover (10) can slide on the collection hopper (8), and the end of the pressure column (12) at the lower end of the closing cover (10) facing the extrusion plate (13) is set as a sphere, and the longitudinal section of the extrusion plate (13) is set as an isosceles trapezoidal structure. The collection hopper (8) is equipped with a receiving plate (14), and the receiving plate (14) is connected to the collection hopper (8) by an auxiliary spring (15). A limiting frame (16) fixed in the middle of the receiving plate (14) extends out of the collection hopper (8), and a guide magnetic block (17) is fixedly connected to the end of the limiting frame (16). When the guide magnetic block (17) at the end of the limiting frame (16) moves with the transmission belt (7), it can approach the guide magnetic block (20) fixed on the inner wall of the purification tank (1). The surfaces of the guide magnetic block (20) and the guide magnetic block (17) are arranged opposite to each other and have the same magnetic polarity. The accommodating plate (14) forms an elastic telescopic structure through the auxiliary spring (15) and the collecting hopper (8), and the accommodating plate (14) is in contact with the collecting hopper (8) in the initial state; A power cylinder (18) is fixed on the side of the purification tank (1), and a push rod (19) is installed on the telescopic end of the power cylinder (18). The end of the push rod (19) facing the guide magnetic block (17) is spherical, and the cross section of the guide magnetic block (17) is a right-angled triangular structure.

2. The air flotation purification equipment for perfume production wastewater treatment according to claim 1, characterized in that: The gas supply pipe (3) is connected to the aeration equipment, and multiple air outlets (4) are evenly distributed at one end of the gas supply pipe (3) extending into the working area inside the purification tank (1).

3. The air flotation purification equipment for perfume production wastewater treatment according to claim 2, characterized in that: One end of the collection bucket (8) is set as an open structure, and multiple collection buckets (8) are evenly distributed on the transmission belt (7), and each collection bucket (8) is provided with a water leakage hole (9).

4. The purification method of the air flotation purification equipment for perfume production wastewater treatment according to claim 3, characterized in that: Includes the following steps: S1: The wastewater to be treated is fed into the working area inside the purification tank (1), and airflow is delivered to the inside of the air pipe (3) through the aeration equipment. The delivered airflow is blown out through the air outlet (4) to generate bubbles. The suspended matter combines with the bubbles and rises to the liquid surface. S2: The transmission roller (6) and transmission belt (7) are controlled by the servo motor (5) to operate. The movement of the transmission belt (7) enables the collection bucket (8) on it to move synchronously. When the collection bucket (8) moves, it can pick up the solid impurities floating on the liquid surface. At the same time, a water leakage hole (9) is opened on the collection bucket (8). During the picking process, the water source can flow out through the water leakage hole (9). S3: When the floating solid impurities in the collection bucket (8) continue to move upward with the transmission belt (7), the spherical end of the pressure column (12) below the sealing cover (10) at the opening end of the collection bucket (8) gradually contacts the inclined side of the extrusion plate (13). The movement of the sealing cover (10) can seal the opening end of the collection bucket (8) to prevent solid impurities inside the collection bucket (8) from leaking out during the transfer process. S4: The push rod (19) is controlled by the power cylinder (18) to move toward the guide magnetic block (17) at the end of the limit frame (16), pushing the guide magnetic block (17) and the limit frame (16) toward the closing cover (10). By moving the accommodating plate (14) and sealing the opening of the collection hopper (8) with the closing cover (10), the solid waste can be squeezed, thereby squeezing out the water adsorbed inside the solid waste. S5: When the drive belt (7) continues to run, the pressure column (12) at the lower end of the closed cover (10) and the squeezing plate (13) disengage from each other, and the closed cover (10) resets under the action of the return spring (11), thereby causing the opening end of the collection hopper (8) to reopen. When the collection hopper (8) passes above the solid waste collection area as the drive belt (7) continues to run, the solid waste inside the collection hopper (8) can be poured into the solid waste collection area for centralized collection. When the collection hopper (8) moves toward the solid waste collection area, the guide magnetic block (17) at the end of the limit frame (16) and the guide magnetic block (20) on the inner side of the purification tank (1) approach each other. At this time, the guide magnetic block (20) generates a repulsive magnetic force on the guide magnetic block (17), causing the guide magnetic block (17), the limiting frame (16) and the accommodating plate (14) to move toward the opening of the collection hopper (8). When the guide magnetic block (17) at the end of the limiting frame (16) and the guide magnetic block (20) on the inside side of the purification tank (1) move away from each other, the accommodating plate (14) is reset under the action of the auxiliary spring (15). Thus, the reciprocating movement of the accommodating plate (14) can collide with the collection hopper (8). The vibration generated by the collision can reduce the adhesion of solid waste inside the collection hopper (8), making it easier for the waste to detach from the collection hopper (8). S6: After the wastewater in the work area is treated by air flotation, the wastewater in the work area is discharged to the outside through the drain pipe on the purification tank (1).

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