Wastewater impurity removal apparatus and method

Abstract

This application relates to a wastewater impurity removal device, comprising a frame and a sedimentation tank mounted on the frame. The sedimentation tank has an opening at its top and includes an inlet zone and a sedimentation zone. A partition is fixedly installed inside the sedimentation tank, separating the inlet zone and the sedimentation zone. The inlet zone is connected to an inlet pipe, and the sedimentation zone has an overflow outlet. A water tank is fixedly installed inside the inlet zone, with an inlet communicating with the inlet zone. A first valve for closing the inlet is installed on the water tank. A water guide pipe is connected to the water tank and communicates with the sedimentation zone, extending to the bottom of the sedimentation zone. A second valve is installed on the water guide pipe. A water pressure assembly for pressurizing water from the water tank into the sedimentation zone is installed inside the water tank. This application improves the removal efficiency of impurities in wastewater.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment, and in particular to a wastewater impurity removal device and method. Background Technology

[0002] Impurities in wastewater typically exist in various forms, including solid, dissolved, and suspended states. Wastewater treatment usually involves physical, chemical, and biological methods to purify the wastewater and meet discharge standards, thereby reducing environmental pollution or achieving wastewater recycling and reuse standards to conserve water resources. Physical wastewater treatment typically uses physical means to remove floating or fine suspended solids and other impurities. Chemical treatment mainly involves adding chemical agents to the wastewater to separate or remove dissolved or suspended pollutants through mass transfer or other processes, or to convert them into harmless substances. Biological treatment primarily uses aerobic biological methods, employing microorganisms to transform wastewater in solution, colloidal, and finely suspended states into stable, harmless substances.

[0003] Currently, in the physical treatment of impurities in wastewater, larger floating objects are first intercepted and removed using coarse screens or sieves. The wastewater is then introduced into a sedimentation tank for settling. After settling, the wastewater flows out through the overflow outlet of the sedimentation tank and enters the next stage for chemical and / or biological treatment. However, when the wastewater enters the sedimentation tank, it exerts a certain impact force on the wastewater settling inside, causing the settled sediment to be stirred up again, or causing some sediment that has not settled in time to flow directly out of the sedimentation tank with the water flow and enter the next stage, affecting the cleaning effect of impurities in the wastewater. Summary of the Invention

[0004] To improve the cleaning effect of impurities in wastewater, this application provides a wastewater impurity removal device and method.

[0005] Firstly, the wastewater impurity removal device provided in this application adopts the following technical solution:

[0006] A wastewater impurity removal device includes a frame and a sedimentation tank mounted on the frame. The sedimentation tank has an opening at the top and is provided with an inlet area and a sedimentation area inside. A partition is fixedly installed inside the sedimentation tank, and the inlet area and the sedimentation area are separated by the partition. The inlet area is connected to an inlet pipe, and the sedimentation area is provided with an overflow port.

[0007] A water tank is fixedly installed in the water inlet area. The water tank has an inlet that communicates with the water inlet area. A first valve for closing the inlet is installed on the water tank. A water guide pipe is connected to the water tank and communicates with the sedimentation area. The water guide pipe extends to the bottom of the sedimentation area. A second valve is installed on the water guide pipe. A water pressure component for pressurizing the water in the water tank into the sedimentation area is installed inside the water tank.

[0008] By adopting the above technical solution, the water inlet and sedimentation zones are separated into two independent areas by sealing the water pipe with the second valve. Wastewater entering the inlet zone through the inlet pipe will not affect the wastewater settling in the sedimentation zone, allowing sufficient settling time. Wastewater in the inlet zone enters the water tank through the inlet on the water tank. The inlet is sealed by the first valve, and the second valve is opened. The water in the water tank is slowly forced into the water pipe by the pressure component, and then enters the bottom of the sedimentation zone through the water pipe. This reduces the impact force when the water flows into the sedimentation zone, preventing the sediment that has already settled in the sedimentation zone from being stirred up again. As the water enters the sedimentation zone, the water that has settled at the top of the sedimentation zone flows out through the overflow outlet, preventing sediment that has not settled in time from flowing out with the water flow from the overflow outlet, which greatly improves the cleaning effect of impurities in the wastewater.

[0009] Optionally, the water pressure assembly includes a sliding frame slidably disposed within the water tank, a pressure plate fixedly disposed on the sliding frame, and a first driving member for driving the sliding frame to slide. The pressure plate is adapted to the interior of the water tank and abuts against the inner wall of the water tank.

[0010] By adopting the above technical solution, when the first valve is closed, the sliding frame is driven to slide by the first driving component, and the water in the water tank is slowly pressed into the water pipe by the pressure plate.

[0011] Optionally, the pressure plate is provided with a pressure relief hole, a sealing plug is slidably disposed on the sliding frame, and a second driving member is provided on the sliding frame for driving the sealing plug to slide, the sealing plug being used to close the pressure relief hole.

[0012] By adopting the above technical solution, when the second valve is closed, the side of the pressure plate near the water pipe is under negative pressure. The second driving component drives the sealing plug to slide, opening the pressure relief hole and balancing the pressure on both sides of the pressure plate, which facilitates the sliding of the pressure plate in the water tank.

[0013] Optionally, a waste bin is fixedly installed at the bottom of the sedimentation tank. Both the bottom of the water inlet zone and the sedimentation zone are provided with discharge ports that communicate with the waste bin. A baffle is fixedly installed inside the waste bin, which divides the waste bin into a first sludge discharge zone and a second sludge discharge zone. The water inlet zone is connected to the first sludge discharge zone, and the sedimentation zone is connected to the second sludge discharge zone. Both the water inlet zone and the sedimentation zone are provided with sealing components for closing the discharge ports. Both the first sludge discharge zone and the second sludge discharge zone are connected to a discharge pipe, and a third valve is installed on the discharge pipe.

[0014] By adopting the above technical solution, a large amount of sediment will accumulate at the bottom of both the inlet zone and the sedimentation zone. The sediment needs to be cleaned at regular intervals. When the sediment is cleaned, the device cannot continue to operate, which seriously affects the wastewater treatment efficiency. The sediment in the inlet zone enters the first discharge zone through the discharge port at the bottom of the inlet zone, and the sediment in the sedimentation zone enters the second discharge zone through the discharge port at the bottom of the sedimentation zone. When the sediment needs to be cleaned, the discharge ports at the bottom of the inlet zone and the sedimentation zone are sealed by the sealing components, and then the third valve on the two discharge pipes is opened to clean the sediment. This eliminates the need to shut down the device and ensures the working efficiency of the device.

[0015] Optionally, the sealing assembly includes a cover plate and a third driving member. The cover plate is slidably disposed in the water inlet area or sedimentation area in a vertical direction. The third driving member is used to drive the cover plate to slide, and the cover plate is used to close the discharge port.

[0016] By adopting the above technical solution, the material discharge port can be closed by driving the cover plate to slide through the third driving component.

[0017] Optionally, the bottom walls of both the water inlet zone and the sedimentation zone are inclined, and gradually slope downwards towards the discharge port.

[0018] By adopting the above technical solution, it is easier for sediments to enter the waste bin through the discharge port.

[0019] Optionally, push plates are slidably arranged inside the waste bin and on both sides of the baffle. A drive assembly for driving the two push plates to slide is provided inside the waste bin, and the push plates are used to push the sediment in the waste bin out of the discharge pipe.

[0020] By adopting the above technical solution, when cleaning the sediment in the waste bin, the push plate is driven by the drive component to slide and push the sediment out of the discharge pipe, making it more convenient to clean the sediment in the waste bin.

[0021] Optionally, the drive assembly includes a bidirectional lead screw and a drive source. The bidirectional lead screw is rotatably disposed inside the waste bin, and both ends of the bidirectional lead screw are threadedly engaged with two push plates respectively. The drive source is used to drive the bidirectional lead screw to rotate.

[0022] By adopting the above technical solution, the bidirectional lead screw is driven to rotate by the drive source. As the bidirectional lead screw rotates, it can drive the two push plates to slide, thereby pushing out the sediment.

[0023] Secondly, this application provides a method for removing impurities from wastewater, employing the following technical solution:

[0024] A method for removing impurities from wastewater includes the following steps:

[0025] S1. The water pipe is sealed by the second valve, so that the water inlet area and the sedimentation area are two independent areas. Wastewater is introduced into the water inlet area through the water inlet pipe, and the wastewater in the water inlet area enters the water tank through the water inlet on the water tank.

[0026] S2. When the water tank is full of water, the inlet is closed by the first valve and the second valve is opened. The water in the tank is slowly pushed into the water pipe by the water pressure component. The water then enters the bottom of the sedimentation zone through the water pipe. As the water enters the sedimentation zone, the water at the top of the sedimentation zone after sedimentation is completed flows out through the overflow port.

[0027] S3. Then close the second valve and open the first valve to allow water from the inlet area to enter the water tank, and repeat step S2.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. By sealing the water pipe with the second valve, the inlet area and the sedimentation area are separated into two independent zones. Wastewater entering the inlet area through the inlet pipe will not affect the wastewater settling in the sedimentation area, allowing sufficient settling time. Wastewater in the inlet area enters the water tank through the inlet on the water tank. The inlet is sealed by the first valve, and the second valve is opened. The water in the water tank is slowly forced into the water pipe by the pressure component, and then enters the bottom of the sedimentation area through the water pipe. This reduces the impact force when the water flows into the sedimentation area, preventing the sediment that has already settled in the sedimentation area from being stirred up again. As the water enters the sedimentation area, the water that has settled at the top of the sedimentation area flows out through the overflow outlet, preventing the sediment that has not settled in time from flowing out with the water flow from the overflow outlet, which greatly improves the cleaning effect of impurities in the wastewater.

[0030] 2. Sediment in the inlet zone enters the first discharge zone through the discharge port at the bottom of the inlet zone, and sediment in the settling zone enters the second discharge zone through the discharge port at the bottom of the settling zone. When it is necessary to clean the sediment, the discharge ports at the bottom of the inlet zone and the settling zone are sealed by the sealing components, and then the third valve on the two discharge pipes is opened to clean the sediment. This does not require the device to be shut down, thus ensuring the working efficiency of the device.

[0031] 3. When cleaning the sediment in the waste bin, the push plate is driven by the drive component to slide and push the sediment out of the discharge pipe, making it easier to clean the sediment in the waste bin. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0033] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of this application;

[0034] Figure 3 This is a partial structural cross-sectional view of an embodiment of this application;

[0035] Figure 4 yes Figure 3 Enlarged view of section A;

[0036] Figure 5 This is a cross-sectional view of the overall structure of an embodiment of this application;

[0037] Figure 6 yes Figure 5 Enlarged view of section B;

[0038] Figure 7 This is a partial structural cross-sectional view of an embodiment of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Inlet pipe; 12. Overflow port; 13. Feed chute; 14. Outlet; 2. Sedimentation tank; 21. Baffle plate; 22. Inlet area; 23. Sedimentation area; 24. First drive component; 25. Discharge port; 26. Fixing frame; 27. Cover plate; 271. Rubber sealing gasket; 28. Third drive component; 3. Water tank; 31. Inlet; 32. First valve; 33. Water guide pipe; 34. ... 35. Second valve; 36. Sliding frame; 37. Transmission rod; 38. Pressure plate; 39. Pressure relief hole; 30. Rubber pad; 30. Sealing plug; 41. Second drive component; 42. Waste bin; 43. Baffle; 44. First sludge discharge zone; 45. Second sludge discharge zone; 46. Discharge pipe; 47. Third valve; 48. Push plate; 49. Guide rod; 40. Bidirectional lead screw; 41. Second gear; 42. Drive source; 43. First gear. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0041] This application discloses a wastewater impurity removal device. (Refer to...) Figure 1 It includes a frame 1 and a sedimentation tank 2 fixedly mounted on the frame 1. The top of the sedimentation tank 2 is open. A partition 21 is fixedly mounted inside the sedimentation tank 2, which divides the sedimentation tank 2 into an inlet area 22 and a sedimentation area 23. The inlet area 22 is connected to an inlet pipe 11, and the sedimentation area 23 is provided with an overflow port 12.

[0042] Reference Figure 2 , 3 A water tank 3 is fixedly installed in the inlet zone 22. The top wall of the water tank 3 is open, and the water tank 3 is cylindrical with a vertical length. The side wall of the water tank 3 has an inlet 31. The height of the inlet 31 is lower than the height of the end connecting the inlet pipe 11 and the sedimentation tank 2. A first valve 32 is installed at the inlet 31. A water guide pipe 33 is connected to the bottom of the water tank 3. The water guide pipe 33 passes through the partition 21 and extends to the bottom of the sedimentation zone 23. A second valve 34 is installed on the water guide pipe. Both the first valve 32 and the second valve 34 are water solenoid valves. The water guide pipe 33 is closed by the second valve 34, so that the inlet zone 22 and the sedimentation zone 23 form two independent areas. The wastewater entering the inlet zone 22 through the inlet pipe 11 will not affect the wastewater settling in the sedimentation zone 23, so that the wastewater in the sedimentation zone 23 has sufficient settling time.

[0043] Reference Figure 3 , 4 The water tank 3 is equipped with a water-pressing assembly for pressurizing the water in the water tank 3 into the sedimentation zone 23. The water-pressing assembly includes a sliding frame 35, a pressure plate 36, and a first driving component 24. The sliding frame 35 is slidably disposed in the water tank 3 in a vertical direction. The pressure plate 36 is fixedly disposed on the sliding frame 35 and is adapted to the interior of the water tank 3. A rubber pad 37 is fixedly disposed on the pressure plate 36 and fits against the inner wall of the water tank 3. The first driving component 24 includes a hydraulic cylinder, which is fixedly disposed in the water inlet zone 22. A transmission rod 351 is fixedly disposed on the sliding frame 35. The transmission rod 351 is vertically disposed, and the piston rod of the hydraulic cylinder is fixedly connected to the transmission rod 351.

[0044] Reference Figure 4The pressure plate 36 has a pressure relief hole 361 that passes through the rubber pad 37 on the pressure plate 36. A sealing plug 38 is slidably mounted on the sliding frame 35 in the vertical direction. An annular groove is formed on the sealing plug 38 along its circumference. A rubber sealing ring is fitted on the sealing plug 38 and is located in the annular groove. A second driving component 39 is provided on the sliding frame 35 to drive the sealing plug 38 to slide. The second driving component 39 includes a servo cylinder, which is fixedly mounted on the sliding frame 35. The piston rod of the servo cylinder is fixedly connected to the sealing plug 38. Since the side of the pressure plate 36 closest to the water pipe 33 is under negative pressure when the second valve 34 is closed, the sealing plug 38 is driven to slide by the servo cylinder, which opens the pressure relief hole 361 and balances the pressure on both sides of the pressure plate 36, making it easier for the pressure plate 36 to slide in the water tank 3.

[0045] Reference Figure 5 A waste bin 4 is fixedly installed on the frame 1 at the bottom of the sedimentation tank 2. A baffle 41 is fixedly installed inside the waste bin 4, which divides the interior of the waste bin 4 into a first sludge discharge zone 42 and a second sludge discharge zone 43. The bottom of the water inlet zone 22 and the sedimentation zone 23 are both provided with a discharge port 25 that communicates with the waste bin 4. The water inlet zone 22 communicates with the first sludge discharge zone 42, and the sedimentation zone 23 communicates with the second sludge discharge zone 43. The sides of the first sludge discharge zone 42 and the second sludge discharge zone 43 that are far apart from each other are both connected to a discharge pipe 44. A guide trough 13 is provided inside the frame 1, and both discharge pipes 44 are connected to the guide trough 13. A discharge port 14 that communicates with the guide trough 13 is provided on the side wall of the frame 1. The two discharge pipes 44 are inclined downward in the direction away from the waste bin 4, and the guide trough 13 is inclined downward in the direction close to the discharge port 14. A third valve 45 is provided on both discharge pipes 44.

[0046] Reference Figure 5 The bottom walls of both the water inlet zone 22 and the sedimentation zone 23 are inclined, and the bottom wall of the water inlet zone 22 gradually slopes downward along the direction close to the material outlet 25 inside the water inlet zone 22, and the bottom wall of the sedimentation zone 23 gradually slopes downward along the direction close to the material outlet 25 inside the sedimentation zone 23.

[0047] Reference Figure 5 , 6 Both the water inlet zone 22 and the sedimentation zone 23 are fixedly equipped with a fixing frame 26. Both fixing frames 26 are equipped with a sealing component for sealing the material discharge port 25. The sealing component includes a cover plate 27 and a third driving component 28. The cover plate 27 is slidably mounted on the fixing frame 26 in the vertical direction. The length direction of the cover plate 27 is horizontal, and a rubber sealing gasket 271 is fixedly mounted on the bottom wall of the cover plate 27. The third driving component 28 includes a driving cylinder, which is fixedly mounted on the fixing frame 26. The piston rod of the third cylinder is fixedly connected to the cover plate 27.

[0048] Reference Figure 7Inside the waste bin 4, on both sides of the baffle 41, push plates 46 are slidably arranged. The push plates 46 are parallel to the baffle 41, and the sliding direction of the push plates 46 is perpendicular to the baffle 41. The push plates 46 are adapted to the inner wall of the waste bin 4. A guide rod 47 is fixedly arranged inside the waste bin 4. The guide rod 47 passes through the baffle 41 and is fixed to the baffle 41. The length direction of the guide rod 47 is perpendicular to the baffle 41. The two push plates 46 are slidably engaged with the guide rod 47 respectively.

[0049] Reference Figure 7 The waste bin 4 is equipped with a drive assembly for driving the two push plates 46 to slide. The drive assembly includes a bidirectional lead screw 48 and a drive source 49. The bidirectional lead screw 48 is rotatably disposed in the waste bin 4, and the axial direction of the bidirectional lead screw 48 is parallel to the length direction of the guide rod 47. The bidirectional lead screw 48 passes through the baffle 41 and is rotatably engaged with the baffle 41. The two ends of the bidirectional lead screw 48 are threadedly engaged with the two push plates 46 respectively. The inner wall of the baffle 41 has a receiving cavity, and the bidirectional lead screw 48 passes through the receiving cavity. The drive source 49 includes a servo motor, which is fixedly disposed in the receiving cavity. A first gear 491 is coaxially fixedly disposed on the output shaft of the servo motor, and a second gear 481 is coaxially fixedly disposed on the bidirectional lead screw 48. The first gear 491 and the second gear 481 mesh.

[0050] The implementation principle of the wastewater impurity removal device in this application embodiment is as follows: The water inlet pipe 33 is sealed by the second valve 34, forming two independent areas: the inlet area 22 and the sedimentation area 23. Wastewater entering the inlet area 22 through the inlet pipe 11 will not affect the wastewater settling in the sedimentation area 23, allowing sufficient settling time. Wastewater in the inlet area 22 enters the water tank 3 through the inlet 31. The inlet 31 is sealed by the first valve 32, and the second valve 34 is opened, allowing the wastewater to pass through the first... The moving part 24 drives the sliding frame 35 to slide, and the pressure plate 36 slowly presses the water in the water tank 3 into the water guide pipe 33, and then into the bottom of the sedimentation zone 23 through the water guide pipe 33. This reduces the impact force when the water flows into the sedimentation zone 23, and prevents the sediments that have been settled in the sedimentation zone 23 from being stirred up again. As the water enters the sedimentation zone 23, the water that has been settled at the top of the sedimentation zone 23 flows out through the overflow port 12, preventing the sediments that have not settled in time from flowing out of the overflow port 12 with the water flow, which greatly improves the cleaning effect of impurities in wastewater.

[0051] This application also discloses a method for removing impurities from wastewater, including the following steps:

[0052] S1. The water pipe 33 is sealed by the second valve 34, so that the water inlet area 22 and the sedimentation area 23 form two independent areas. Wastewater is introduced into the water inlet area 22 through the water inlet pipe 11. The wastewater in the water inlet area 22 enters the water tank 3 through the water inlet 31 on the water tank 3.

[0053] S2. When the water tank 3 is full of water, the inlet 31 is closed by the first valve 32 and the second valve 34 is opened. The sliding frame 35 is driven to slide by the first driving component 24. The water in the water tank 3 is slowly pushed into the water pipe 33 by the pressure plate 36. Then, the water enters the bottom of the sedimentation zone 23 through the water pipe 33. As the water enters the sedimentation zone 23, the water at the top of the sedimentation zone 23 after sedimentation is completed flows out through the overflow port 12.

[0054] S3. Then close the second valve 34 and open the first valve 32 to allow water in the inlet area 22 to enter the water tank 3, and repeat step S2.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wastewater impurity removal device, characterized in that: The equipment includes a frame (1) and a sedimentation tank (2) mounted on the frame (1). The sedimentation tank (2) has an opening at the top. The sedimentation tank (2) has an inlet area (22) and a sedimentation area (23). A partition (21) is fixedly mounted inside the sedimentation tank (2). The inlet area (22) and the sedimentation area (23) are separated by the partition (21). The inlet area (22) is connected to an inlet pipe (11). The sedimentation area (23) is provided with an overflow port (12). A water tank (3) is fixedly installed in the water inlet area (22). The water tank (3) has an inlet (31) that communicates with the water inlet area (22). A first valve (32) for closing the inlet (31) is provided on the water tank (3). A water guide pipe (33) is connected to the water tank (3). The water guide pipe (33) is connected to the sedimentation area (23). The water guide pipe (33) extends to the bottom of the sedimentation area (23). A second valve (34) is provided on the water guide pipe (33). A water pressure component for pressurizing the water in the water tank (3) into the sedimentation area (23) is provided in the water tank (3). The water pressure assembly includes a sliding frame (35) slidably disposed in the water tank (3), a pressure plate (36) fixedly disposed on the sliding frame (35), and a first driving member (24) for driving the sliding frame (35) to slide. The pressure plate (36) is adapted to the interior of the water tank (3), and the pressure plate (36) abuts against the inner wall of the water tank (3). The pressure plate (36) has a pressure relief hole (361), and a sealing plug (38) is slidably disposed on the sliding frame (35). The sliding frame (35) is provided with a second driving member (39) for driving the sealing plug (38) to slide. The sealing plug (38) is used to close the pressure relief hole (361).

2. The wastewater impurity removal device according to claim 1, characterized in that: The bottom of the sedimentation tank (2) is fixedly provided with a waste box (4). The bottom of the water inlet area (22) and the sedimentation area (23) are both provided with a discharge port (25) that communicates with the waste box (4). A baffle (41) is fixedly provided inside the waste box (4). The baffle (41) divides the waste box (4) into a first sludge discharge area (42) and a second sludge discharge area (43). The water inlet area (22) is connected to the first sludge discharge area (42). The sedimentation area (23) is connected to the second sludge discharge area (43). Both the water inlet area (22) and the sedimentation area (23) are provided with sealing components for closing the discharge port (25). The first sludge discharge area (42) and the second sludge discharge area (43) are both connected with a discharge pipe (44). A third valve (45) is provided on the discharge pipe (44).

3. The wastewater impurity removal device according to claim 2, characterized in that: The sealing assembly includes a cover plate (27) and a third driving member (28). The cover plate (27) is slidably disposed in the water inlet area (22) or sedimentation area (23) in the vertical direction. The third driving member (28) is used to drive the cover plate (27) to slide, and the cover plate (27) is used to close the discharge port (25).

4. The wastewater impurity removal device according to claim 2, characterized in that: The bottom walls of the water inlet zone (22) and the sedimentation zone (23) are both inclined and gradually slope downwards along the direction close to the discharge port (25).

5. The wastewater impurity removal device according to claim 2, characterized in that: Push plates (46) are slidably arranged inside the waste bin (4) and on both sides of the baffle (41). A drive assembly for driving the two push plates (46) to slide is provided inside the waste bin (4), and the push plates (46) are used to push the sediment in the waste bin (4) out of the discharge pipe (44).

6. The wastewater impurity removal device according to claim 5, characterized in that: The drive assembly includes a bidirectional lead screw (48) and a drive source (49). The bidirectional lead screw (48) is rotatably disposed in the waste bin (4), and both ends of the bidirectional lead screw (48) are threadedly engaged with two push plates (46). The drive source (49) is used to drive the bidirectional lead screw (48) to rotate.

7. The wastewater impurity removal method of the wastewater impurity removal device according to any one of claims 1-6, characterized in that, Includes the following steps: S1. The water pipe (33) is closed by the second valve (34) so ​​that the water inlet area (22) and the sedimentation area (23) form two independent areas. Wastewater is introduced into the water inlet area (22) through the water inlet pipe (11). The wastewater in the water inlet area (22) enters the water tank (3) through the water inlet (31) on the water tank (3). S2. When the water tank (3) is full of water, the inlet (31) is closed by the first valve (32), the second valve (34) is opened, and the water in the water tank (3) is slowly pushed into the water pipe (33) by the water pressure assembly. Then, the water enters the bottom of the sedimentation zone (23) through the water pipe (33). As the water enters the sedimentation zone (23), the water at the top of the sedimentation zone (23) after sedimentation is completed flows out through the overflow port (12). S3. Then close the second valve (34) and open the first valve (32) to allow water in the inlet area (22) to enter the water tank (3), and repeat step S2.

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