Industrial wastewater secondary utilization treatment and purification equipment and purification method

Abstract

This invention discloses a purification device and method for the secondary utilization and treatment of industrial wastewater, relating to the field of wastewater treatment technology. It solves the technical problem that existing industrial wastewater treatment tanks have limited functionality, leading to separate wastewater treatment steps and affecting overall treatment efficiency due to equipment replacement. The technical solution is an integrated purification and processing structure. When wastewater enters the device, it undergoes both static and dynamic filtration. The bottom stirring mechanism, reagent injection structure, and aerator provide a unified secondary treatment structure for wastewater sedimentation. The advantages of this invention are: the integrated, multi-functional, selectable treatment device and the purification method based on it allow for rapid and efficient treatment of a fixed quantity of wastewater compared to open-air treatment equipment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a purification device and method for the secondary utilization of industrial wastewater. Background Technology

[0002] Industrial wastewater includes production wastewater, industrial sewage, and cooling water. It refers to wastewater and waste liquid generated during industrial production processes. It contains industrial production materials, intermediate products, by-products, and pollutants generated during production that are lost with the water. Industrial wastewater is diverse and complex in composition. In the treatment of industrial wastewater, primary, secondary, and tertiary sewage treatment methods are often used to treat it in sequence. In order to meet more usage needs, this application proposes a new type of industrial wastewater treatment equipment.

[0003] Traditional industrial wastewater treatment ponds mainly rely on open-air aeration and sedimentation. These devices are suitable for treating large volumes of wastewater in a unified manner, but they require pre-treatment such as wastewater filtration and reagent mixing. Therefore, their limited functionality necessitates separate wastewater treatment steps, and the replacement of processing equipment also affects the overall treatment time and efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the technical problem that the existing industrial wastewater treatment ponds have a single function, which leads to the need to carry out wastewater treatment steps separately, and the replacement of processing equipment also affects the overall treatment time and the efficiency of wastewater treatment. This invention provides an industrial wastewater secondary utilization treatment and purification equipment and method. Through an integrated multi-functional treatment device and a purification method based on the device, a quantitative amount of wastewater can be treated quickly and efficiently compared with open-air treatment equipment.

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

[0006] The system includes a docking frame, a processing seat fixedly mounted at the bottom of the docking frame, a sealing cover movably mounted at the top of the docking frame, a limit seat fixedly mounted at the top of the sealing cover, a feeding seat fixedly mounted at the top of the limit seat, a snap-fit ​​cover snapped onto the top of the feeding seat, a water injection pipe fixedly mounted at the top of the snap-fit ​​cover, a connecting frame fixedly mounted at the bottom of the snap-fit ​​cover, a limit screen threadedly connected to the bottom of the connecting frame, a lifting seat slidably connected to the inner wall of the processing seat, two sets of vertically distributed screens fixedly mounted on the inner wall of the lifting seat, a connecting seat fixedly mounted at the bottom of the processing seat, and vibration motors fixedly mounted around the top of the connecting seat on all four sides. The output end of the vibration motor is fixedly connected to the bottom of the lifting seat, and the bottom of the connecting seat is fixedly mounted with... The system comprises a mixing base, a sealed chamber fixedly installed on the inner bottom wall of the mixing base, a drive motor fixedly installed on the inner wall of the sealed chamber, a drive rod fixedly installed on the output end of the drive motor, a bogie rotatably connected to the top of the drive rod, a limit scraper fixedly installed on the inner wall of the bogie, a placement base fixedly installed at the bottom of the mixing base, an aerator fitted on one side of the top of the placement base, multiple reagent chambers fitted on the other side of the top of the placement base, a nozzle assembly with a built-in pressurization structure fixedly installed on the top of the reagent chamber, the aerator and reagent chambers communicating with the interior of the mixing base, an output pipe fixedly installed on one side of the mixing base, a booster pump fixedly installed at the front end of the output pipe, and a limit hose fixedly installed at the output end of the booster pump.

[0007] As an optional technical solution, a docking seat is fixedly installed at the bottom of the sealing cover, and the docking seat is snapped into the top of the docking frame. An annular mounting bracket is fixedly installed on the inner wall of the docking seat, and an arc-shaped support grid is fixedly installed on the inner wall of the annular mounting bracket.

[0008] As an optional technical solution, the inner wall of the connecting seat is provided with a liquid outlet, and multiple sets of annular partition plates are fixedly installed on the inner wall of the liquid outlet. A connecting ring is fixedly installed at the bottom of the connecting seat, and a mesh with large holes is fixedly installed on the inner wall of the connecting ring.

[0009] As an optional technical solution, a reinforcing rod is fixedly installed on the outer surface of the processing seat, and the two ends of the reinforcing rod have the same structural components.

[0010] As an optional technical solution, a lifting ring is provided around the outer surface of the lifting seat, and the lifting ring is slidably connected to the inner wall of the processing seat.

[0011] As an optional technical solution, multiple sets of straightening rods are fixedly installed on the inner wall of the sealed chamber, and a straightening ring is fixedly installed at the front end of the straightening rod, and the straightening ring is sleeved on the outer surface of the drive rod.

[0012] A purification method based on industrial wastewater secondary utilization and treatment purification equipment is as follows:

[0013] S1. Wastewater can be injected into the feed seat through the water injection pipe. Upon entering, the wastewater passes through the upper limit screen on the connecting frame, where it filters and flows into the processing seat. The processing seat is then powered by a vibrating motor, whose output drives the lifting seat to oscillate up and down, causing the two sets of screens to vibrate and screen the flowing wastewater. Both the screens and the limit screen are designed to filter impurities during the wastewater's flow. The filtered wastewater finally falls into the mixing base. Inside the mixing base, a drive motor in the sealed chamber powers the rotation of the drive rod and bogie, causing the bogie and limit screen to rotate. The scraper can rotate and stir the wastewater inside the mixing base. During stirring, appropriate amounts of flocculants, coagulants, conditioners, demulsifiers, defoamers, pH adjusters, oxidizing and reducing agents, and disinfectants can be injected into different reagent compartments via an external input structure. The appropriate amount of reagents can be injected into the mixing base according to the wastewater composition and the actual treatment requirements. The stirring mechanism helps to fully mix the reagents with the wastewater. When stirring stops, the wastewater can be allowed to settle by standing or using an aerator to achieve primary and secondary treatment. The treated wastewater is then pumped out through a booster pump and output pipe. The booster pump, after passing through the pump, outputs the wastewater through a limiting hose.

[0014] S2. The injection structure at the top of the device is installed by snapping together the docking seat and the docking frame. When wastewater is injected through the top water injection pipe, the bottom of the limiting screen is impacted by the falling wastewater. The arc-shaped support frame, through the through holes on its surface, works in conjunction with the falling wastewater and can also provide temporary support at the bottom of the limiting screen to prevent a large amount of wastewater from impacting the limiting screen. It also assists in supporting the limiting screen without affecting the downward flow of wastewater.

[0015] S3. The flexibility of installation between the sealing cover and the docking frame, as well as the relationship of the threaded installation connection of the limiting screen cover, allows for the disassembly and cleaning of the limiting screen cover by removing the sealing cover. After the sealing cover is removed, the surface of the lifting seat can be exposed, and the two screens inside have a flexible assembly structure. The screens can be disassembled and cleaned by disassembling the fixed parts. Its simple cleaning and filtration structure allows some impurities in the wastewater to pass through the filtration structure, which meets the requirements for primary treatment of wastewater.

[0016] The technical solution provided by this invention has the following technical effects:

[0017] 1. The present invention provides an industrial wastewater secondary utilization treatment and purification equipment and method. Through an integrated purification and processing structure, the wastewater is provided with static and dynamic dual filtration when it enters the device. The bottom stirring mechanism, reagent injection structure and aerator of the device provide a unified secondary treatment structure at the bottom of the device for the sedimentation treatment of wastewater. The integrated multi-functional treatment device can quickly and efficiently treat a certain amount of wastewater compared with open-air treatment equipment.

[0018] 2. The present invention provides an industrial wastewater secondary utilization treatment and purification equipment and method. By stacking and installing the equipment, the equipment is installed from top to bottom in sequence during use. Thus, its structure can be disassembled in batches, and the wastewater residue inside can be cleaned in a unified manner. Therefore, the independent quantitative wastewater processing device provided by the device is flexible in use, and the selective injection of internal reagents can quickly respond to the processing of different wastewater components. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the purification equipment of the present invention;

[0021] Figure 2 This is a perspective view of the treatment base structure of the purification equipment of the present invention;

[0022] Figure 3 This is a perspective view of the mixing base structure of the purification equipment of the present invention;

[0023] Figure 4 This is a perspective view of the screen structure of the purification equipment of the present invention;

[0024] Figure 5 This is a cross-sectional schematic diagram of the docking seat structure of the purification equipment of the present invention;

[0025] Figure 6 This is a cross-sectional schematic diagram of the connection seat structure of the purification equipment of the present invention;

[0026] Figure 7 This is a cross-sectional schematic diagram of the base structure for the purification equipment of the present invention.

[0027] In the diagram: 1. Docking frame; 2. Processing seat; 3. Sealing cover; 4. Limiting seat; 5. Feeding seat; 6. Snap-fit ​​cover; 7. Water injection pipe; 8. Connecting frame; 9. Limiting mesh cover; 10. Lifting seat; 11. Screen; 12. Connecting seat; 13. Vibration motor; 14. Drive rod; 15. Bogie; 16. Limiting scraper; 17. Placement base; 18. Aerator; 19. Reagent chamber; 20. Nozzle assembly; 21. Docking seat; 22. Annular mounting frame; 23. Arc-shaped support mesh frame; 24. Annular separator; 25. Connecting ring; 26. Mesh; 27. Reinforcing rod; 28. Lifting ring; 29. ​​Straightening rod; 30. Straightening ring; 31. Output pipe; 32. Booster pump; 33. Limiting hose; 34. Mixing base; 35. Sealing chamber; 36. Drive motor. Detailed Implementation

[0028] Example 1:

[0029] Please see Figures 1 to 7 A purification device and method for the secondary utilization and treatment of industrial wastewater;

[0030] The system includes a docking frame 1, a processing seat 2 fixedly mounted at the bottom of the docking frame 1, a sealing cover 3 movably mounted at the top of the docking frame 1, a limiting seat 4 fixedly mounted at the top of the sealing cover 3, a feeding seat 5 fixedly mounted at the top of the limiting seat 4, a snap-fit ​​cover 6 snap-fitted at the top of the feeding seat 5, a water injection pipe 7 fixedly mounted at the top of the snap-fit ​​cover 6, a connecting frame 8 fixedly mounted at the bottom of the snap-fit ​​cover 6, a limiting mesh cover 9 threadedly connected to the bottom of the connecting frame 8, and a lifting seat 10 slidably connected to the inner wall of the processing seat 2. A lifting ring 28 is arranged around the outer surface of the lifting seat 10, and the lifting ring 28 is slidably connected to the inner wall of the processing seat 2. Two sets of screens 11 distributed vertically are fixedly installed on the inner wall of the lifting seat 10. A connecting seat 12 is fixedly installed at the bottom of the processing seat 2. Vibration motors 13 are fixedly installed around the top of the connecting seat 12. The output end of the vibration motor 13 is fixedly connected to the bottom of the lifting seat 10. A mixing base 34 is fixedly installed at the bottom of the connecting seat 12. A sealing chamber 35 is fixedly installed on the inner bottom wall of the mixing base 34. A drive motor 36 is fixedly installed on the inner wall of the sealed chamber 35. A drive rod 14 is fixedly installed on the output end of the drive motor 36. A bogie 15 is rotatably connected to the top of the drive rod 14. A limit scraper 16 is fixedly installed on the inner wall of the bogie 15. Multiple sets of straightening rods 29 are fixedly installed on the inner wall of the sealed chamber 35. A straightening ring 30 is fixedly installed at the front end of the straightening rod 29 and is sleeved on the outer surface of the drive rod 14. A placement base 17 is fixedly installed at the bottom of the mixing base 34. An aerator 18 is fitted into one side of the top of the 7. Multiple reagent chambers 19 are fitted into the other side of the top of the placement base 17. A nozzle assembly 20 with a built-in pressurization structure is fixedly installed on the top of the reagent chamber 19. An output pipe 31 is fixedly installed on one side of the mixing base 34. A booster pump 32 is fixedly installed at the front end of the output pipe 31. A limit hose 33 is fixedly installed at the output end of the booster pump 32. A reinforcing rod 27 is fixedly installed on the outer surface of the treatment base 2. The two ends of the reinforcing rod 27 are connected to the same structure.

[0031] After the water injection pipe 7 is installed and connected to the external wastewater injection equipment, wastewater can be injected into the inside of the feed seat 5 through the water injection pipe 7. When the wastewater enters, it can pass through the upper limit screen 9 of the connecting frame 8 and flow into the inside of the treatment seat 2 under the filtration effect of the upper limit screen 9. The upper limit screen 9 can filter and collect blocky impurities in the wastewater. The inside of the treatment seat 2 can be operated by energizing the vibration motor 13, and its output end can drive the lifting seat 10 to swing up and down, so that the two sets of screens 11 can swing up and down. The up and down swing of the screens 11, together with the setting of the upper limit screen 9, can block and filter the impurities inside the wastewater during the flow. The static and dynamic filtration methods can increase the efficiency of wastewater filtration and treatment, so as to ensure the rapid blocking and filtration of impurities in the wastewater. The filtered wastewater is finally The wastewater falls into the mixing base 34. The mixing base 34 can be powered by the drive motor 36 in the sealed chamber 35. Its output can drive the drive rod 14 and the bogie 15 to rotate. The stirring mechanism composed of its rotating structure can rotate and stir the wastewater inside the mixing base 34. Before stirring, reagents in different reagent chambers 19 can be injected according to the actual work and different needs of the treatment object, so that they can be fully mixed with the wastewater by the rotation of the stirring mechanism. The wastewater can be aerated by the aerator 18 inside the mixing base 34. The mixing of reagents in the mixing base 34 is used to precipitate the wastewater, so as to achieve primary and secondary treatment of wastewater. The treated wastewater can be output through the limit hose 33 by the operation of the booster pump 32.

[0032] The bottom of the sealing cover 3 is fixedly installed with a docking seat 21, and the docking seat 21 is snapped into the top of the docking frame 1. The inner wall of the docking seat 21 is fixedly installed with an annular mounting bracket 22, and the inner wall of the annular mounting bracket 22 is fixedly installed with an arc-shaped support grid 23.

[0033] With the arc-shaped support mesh frame 23 installed, it performs filtration work in the filter structure at the bottom of the sealing cover 3. When the limiting mesh cover 9 is impacted by wastewater, the arc-shaped support mesh frame 23 can play a pre-support role at the bottom of the limiting mesh cover 9 to ensure that the wastewater flows through, so that the mesh frame structure is less affected by the impact of the wastewater.

[0034] The inner wall of the connecting seat 12 is provided with a liquid outlet, and multiple sets of annular partition plates 24 are fixedly installed on the inner wall of the liquid outlet. A connecting ring 25 is fixedly installed at the bottom of the connecting seat 12, and a mesh 26 with large holes is fixedly installed on the inner wall of the connecting ring 25.

[0035] By using the annular separator 24 to divide the liquid outlet at the bottom of the connecting seat 12, the water flow channel can be reasonably divided when the wastewater flows down, thereby reducing the impact on the bottom structure when the wastewater flows down uniformly. In addition, when the sedimentation work is carried out inside the mixing base 34, the mesh 26 can play a role in collecting and adsorbing floating objects at the top of the device, which helps the wastewater sedimentation work in the mixing base 34. The structure of the device is mainly divided into a filtration and mixing treatment structure. The filtration structure is used in conjunction with the wastewater input structure, and the mixing treatment structure is used in conjunction with the output structure by mixing and settling the wastewater. The structure of the device is installed and connected in a combined form, with two sets of wastewater treatment structures that are symmetrically distributed and operate synchronously. The two are connected to the same output structure to carry out wastewater treatment work synchronously.

[0036] Example 2:

[0037] This invention also provides a purification method based on the aforementioned industrial wastewater secondary utilization and treatment purification equipment, as follows:

[0038] S1. Wastewater can be injected into the feed seat through the water injection pipe. Upon entering, the wastewater passes through the upper limit screen on the connecting frame, where it filters and flows into the processing seat. The processing seat is then powered by a vibrating motor, whose output drives the lifting seat to oscillate up and down, causing the two sets of screens to vibrate and screen the flowing wastewater. Both the screens and the limit screen are designed to filter impurities during the wastewater's flow. The filtered wastewater finally falls into the mixing base. Inside the mixing base, a drive motor in the sealed chamber powers the rotation of the drive rod and bogie, causing the bogie and limit screen to rotate. The scraper can rotate and stir the wastewater inside the mixing base. During stirring, appropriate amounts of flocculants, coagulants, conditioners, demulsifiers, defoamers, pH adjusters, oxidizing and reducing agents, and disinfectants can be injected into different reagent compartments via an external input structure. The appropriate amount of reagents can be injected into the mixing base according to the wastewater composition and the actual treatment requirements. The stirring mechanism helps to fully mix the reagents with the wastewater. When stirring stops, the wastewater can be allowed to settle by standing or using an aerator to achieve primary and secondary treatment. The treated wastewater is then pumped out through a booster pump and output pipe. The booster pump, after passing through the pump, outputs the wastewater through a limiting hose.

[0039] S2. The injection structure at the top of the device is installed by snapping together the docking seat and the docking frame. When wastewater is injected through the top water injection pipe, the bottom of the limiting screen is impacted by the falling wastewater. The arc-shaped support frame, through the through holes on its surface, works in conjunction with the falling wastewater and can also provide temporary support at the bottom of the limiting screen to prevent a large amount of wastewater from impacting the limiting screen. It also assists in supporting the limiting screen without affecting the downward flow of wastewater.

[0040] S3. The flexibility of installation between the sealing cover and the docking frame, as well as the relationship of the threaded installation connection of the limiting screen cover, allows for the disassembly and cleaning of the limiting screen cover by removing the sealing cover. After the sealing cover is removed, the surface of the lifting seat can be exposed, and the two screens inside have a flexible assembly structure. The screens can be disassembled and cleaned by disassembling the fixed parts. Its simple cleaning and filtration structure allows some impurities in the wastewater to pass through the filtration structure, which meets the requirements for primary treatment of wastewater.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A purification device for secondary utilization of industrial wastewater, comprising a docking frame (1), characterized in that: A processing seat (2) is fixedly installed at the bottom of the docking frame (1). A sealing cover (3) is movably installed at the top of the docking frame (1). A limiting seat (4) is installed at the top of the sealing cover (3). A feeding seat (5) is installed at the top of the limiting seat (4). A snap-fit ​​cover (6) is snapped onto the top of the feeding seat (5). A water injection pipe (7) is installed at the top of the snap-fit ​​cover (6). A connecting frame (8) extending into the feeding seat (5) is provided at the bottom of the snap-fit ​​cover (6). A limiting mesh cover (9) is threaded onto the bottom of the connecting frame (8). A lifting seat (10) is slidably connected to the inner wall of the processing seat (2). Two sets of screens (11) arranged vertically are provided inside the lifting seat (10). A connecting seat (12) is installed at the bottom of the processing seat (2). A vibration motor is provided at the top of the connecting seat (12). The machine (13) has its output end connected to the bottom of the lifting seat (10). The bottom of the connecting seat (12) is equipped with a mixing base (34). The inner bottom wall of the mixing base (34) is provided with a sealing chamber (35). The interior of the sealing chamber (35) is equipped with a drive motor (36). The output end of the drive motor (36) is connected to a drive rod (14). The top of the drive rod (14) is rotatably connected to a bogie (15) that extends into the mixing base (34). The bogie (15) is connected to a limiting scraper (16) that contacts the bottom side of the mixing base (34). The bottom of the mixing base (34) is equipped with a placement base (17). The placement base (17) is embedded with an aerator (18) that communicates with the interior of the mixing base (34) and multiple reagent chambers (19). The bottom of the sealing cover (3) is connected to a docking seat (21), and the docking seat (21) is snapped onto the top of the docking frame (1). The inner wall of the docking seat (21) is provided with an annular mounting bracket (22), and the inner wall of the annular mounting bracket (22) is fixedly installed with an arc-shaped support grid frame (23). The inner wall of the connecting seat (12) is provided with a liquid outlet, and the inner wall of the liquid outlet is equipped with multiple sets of annular partition plates (24). The bottom of the connecting seat (12) is equipped with a connecting ring (25), and the inner wall of the connecting ring (25) is equipped with a mesh (26) with holes. A straightening rod (29) is fixedly installed on the inner wall of the sealed chamber (35), and a straightening ring (30) is installed at the front end of the straightening rod (29), and the straightening ring (30) is sleeved on the outer surface of the drive rod (14).

2. The industrial wastewater secondary utilization and purification equipment according to claim 1, characterized in that: A reinforcing rod (27) is connected between adjacent processing seats (2).

3. The industrial wastewater secondary utilization and purification equipment according to claim 1, characterized in that: The outer surface of the lifting seat (10) is surrounded by a lifting ring (28), and the lifting ring (28) is slidably connected to the inner wall of the processing seat (2).

4. The industrial wastewater secondary utilization and purification equipment according to claim 1, characterized in that: The top of the reagent chamber (19) is connected to the interior of the mixing base (34) via a nozzle assembly (20) with a built-in pressurization structure.

5. The industrial wastewater secondary utilization and purification equipment according to claim 1, characterized in that: The mixing base (34) is connected to an output pipe (31) on one side. A booster pump (32) is fixedly installed at the front end of the output pipe (31). A limit hose (33) is provided at the output end of the booster pump (32).

6. The industrial wastewater secondary utilization and purification equipment according to claim 1, characterized in that: The inner wall of the sealed chamber (35) is provided with multiple sets of straightening rods (29) in the vertical direction.

7. A purification method based on industrial wastewater secondary utilization treatment and purification equipment according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Wastewater is injected into the feed seat (5) through the water injection pipe (7). When the wastewater enters, it is filtered by the upper limit screen (9) of the connecting frame (8) and then flows downward into the processing seat (2). The processing seat (2) is powered by the vibration motor (13), and its output end drives the lifting seat (10) to shake up and down, so that the two sets of screens (11) structure shake up and down, thereby shaking and screening the flowing wastewater. The screens (11) and the limit screen (9) are both designed to screen the wastewater during the flow of the wastewater. Impurities are filtered out, and the filtered wastewater eventually falls into the mixing base (34). Inside the mixing base (34), the drive motor (36) in the sealed chamber (35) is powered on, and its output drives the drive rod (14) and the bogie (15) to rotate. This causes the bogie (15) and the limiting scraper (16) to rotate and stir the wastewater inside the mixing base (34). During the stirring process, appropriate amounts of flocculant, coagulant aid, and conditioner are injected into the different reagent chambers (19) through the external input structure. Demulsifier, defoamer, pH adjuster, oxidizing and reducing agent and disinfectant are injected into the mixing base (34) according to the wastewater composition and its actual treatment requirements. The stirring mechanism assists in the full mixing of the reagents and wastewater. When stirring is stopped, the wastewater is settled by standing or by using an aerator (18) to achieve primary and secondary treatment of the wastewater. The treated wastewater is then output through the limiting hose (33) after passing through the booster pump (32). S2. The injection structure at the top of the device is installed by the snap-fit ​​of the docking seat (21) and the docking frame (1). When the wastewater is injected by the top water injection pipe (7), when the bottom of the limiting screen (9) is impacted by the falling wastewater, the arc-shaped support frame (23) plays a temporary support role at the bottom of the limiting screen (9) through the setting of the through hole on its surface, in coordination with the falling wastewater, to prevent a large amount of wastewater from entering and impacting the limiting screen (9), and to assist in supporting the limiting screen (9) without affecting the downward flow of wastewater. S3. By disassembling the sealing cover (3), the limiting mesh cover (9) is disassembled and cleaned. After the sealing cover (3) is removed, the surface of the lifting seat (10) is exposed. The two screens (11) are assembled inside. By disassembling the fixed parts, the screens (11) are disassembled and cleaned. The simple cleaning and filtration structure allows some impurities in the wastewater to pass through the filtration structure, which satisfies the first-level treatment of wastewater.

Images