Sewage pretreatment conditioning tank with vibration-assisted deslagging function

Abstract

The sewage pretreatment adjusting pool with the vibration auxiliary residue discharging function is connected between the grid pool and the subsequent treatment device of the sewage treatment system and comprises an adjusting pool, a scum discharging mechanism, a residue collecting pool and a scraper vibration mechanism. The adjusting pool has a sewage adjusting space inside and an open top. The scum discharging mechanism is arranged on the top of the adjusting pool. The residue collecting pool is arranged outside the adjusting pool and has a residue collecting space inside and a pool opening on the top. A plurality of scrapers of the scum discharging mechanism move in the opening to push the suspended matter in the opening into the residue collecting space. The scraper vibration mechanism is arranged on the top of the adjusting pool adjacent to the residue collecting pool and outside the end of the scum discharging mechanism and vibrates the scraper moving into the vibration range to vibrate the suspended matter remaining on the scraper into the residue collecting space. Accordingly, the suspended matter remaining on the scraper can be effectively prevented from being brought back into the adjusting pool.

Description

Technical Field

[0001] This utility model relates to the field of wastewater pretreatment technology, and in particular to a wastewater pretreatment regulating tank with vibration-assisted slag discharge function. Background Technology

[0002] Wastewater pretreatment equipment is used to remove easily removable floating solids and other impurities from wastewater before advanced treatment, significantly reducing the load on subsequent wastewater treatment units. Wastewater pretreatment equipment typically consists of components such as a bar screen, equalization tank, and sludge collection tank. The bar screen removes large-volume impurities using bar screens and other components. After treatment in the bar screen, the wastewater flows into the equalization tank to homogenize the pH level. Simultaneously, a flotation unit or similar device achieves initial solid-liquid separation. Then, scrapers and other components transfer the suspended solids from the solid-liquid separation to the sludge collection tank, thus ensuring the wastewater meets the requirements for subsequent treatment units (such as biological treatment units).

[0003] Currently, scraper components in wastewater pretreatment devices mainly use electrically driven conveyor belts or chains to drive one or more scrapers in cyclical operation, thereby transferring suspended solids floating on the water surface in the equalization tank to the sludge collection tank. However, with the existing scraper structure, suspended solids easily remain on the scraper surface and are carried back into the equalization tank, thus reducing the effectiveness of wastewater pretreatment. Therefore, how to solve the problem of scrapers easily carrying residual suspended solids back into the equalization tank has become one of the technical problems that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The technical problem this solution aims to solve is how to prevent suspended solids remaining on the scraper from re-entering the equalization tank.

[0005] To address the aforementioned technical problems, this technical solution provides a wastewater pretreatment equalization tank with vibration-assisted sludge removal function. It connects the bar screen of the wastewater treatment system to subsequent treatment devices (such as a biochemical treatment unit) and includes: an equalization tank, a scum removal mechanism, a sludge collection tank, and a scraper vibration mechanism. The equalization tank has a wastewater equalization space inside, and an opening at its upper part communicating with this space. The scum removal mechanism is installed at the upper part of the equalization tank, and the sludge collection tank is located outside the equalization tank. The sludge collection tank has a sludge collection space inside, and an opening at its upper part communicating with this space. Several scrapers of the scum removal mechanism circulate within the opening to push suspended matter floating in the opening into the sludge collection space through the opening. The scraper vibration mechanism is located above the equalization tank adjacent to the sludge collection tank and outside the end of the scum removal mechanism. The scraper vibration mechanism vibrates the scrapers that move into its vibration range to shake off any remaining suspended matter on the scrapers into the sludge collection space. Accordingly, this technical solution adds a scraper vibration mechanism to the outer side of the end of the scum removal mechanism to vibrate the scraper that has been removed from the opening, thereby shaking the suspended matter remaining on the scraper into the scum collection space, thus achieving the beneficial technical effect of preventing the suspended matter from being brought back into the equalization tank.

[0006] In another implementation of this technical solution, the opening is rectangular, and the slag collection tank is fixedly attached to the outer wall of the regulating tank on one short side of the opening. The height of the opening is higher than the height of the tank opening. The slag removal mechanism includes: four fixed plates, two rollers, two annular belts, a motor, and several scrapers. The four fixed plates are all vertically arranged and divided into two outgoing end fixed plates and two incoming end fixed plates. The two outgoing end fixed plates face each other and are fixedly installed on both sides of the short side of the opening adjacent to the slag collection tank. The two incoming end fixed plates face each other and are fixedly installed on both sides of the short side of the opening away from the slag collection tank. The line connecting the two outgoing end fixed plates is located outside the opening, while the line connecting the two incoming end fixed plates is located outside the opening. The connecting line is located inside the opening. The two rollers are parallel and their ends are rotatably mounted on the two exit end fixing plates and the two inlet end fixing plates via bearing seats. The two annular belts are parallel and their annular surfaces face each other and are respectively sleeved on the two ends of the two rollers. The motor is located outside the regulating tank and its drive end is connected to the end of one of the rollers that passes through the bearing seat. The several scrapers are evenly arranged between the two annular belts. Driven by the motor, the rollers drive the two annular belts to rotate and move synchronously, thereby driving the several scrapers to circulate into the opening from the short side away from the slag collection tank and push the floating suspended matter towards the slag collection tank. At the short side of the opening adjacent to the slag collection tank, the suspended matter is pushed out and falls into the slag collection space. Accordingly, by placing the line connecting the two exit end fixing plates on the outside of the opening, the scraper can be positioned above the tank opening after it is removed from the opening, so that suspended solids shaken off by the scraper vibration mechanism can fall directly into the sludge collection space through the tank opening. Conversely, by placing the line connecting the two inlet end fixing plates on the inside of the opening, the scraper can move in the area above the opening before entering it, thereby preventing any residual wastewater or suspended solids on the scraper from falling onto the outside of the equalization tank.

[0007] As another implementation of this technical solution, the scraper is composed of a fixed rod, a plate body, a scraping part, and a guiding part. The fixed rod is horizontal and parallel to the roller, and its two ends are fixedly connected to the corresponding positions of the two annular belts. The plate body is rectangular, and one of its long side edges is fixedly connected to the side wall of the fixed rod facing the outside of the annular belt. The scraping part is a triangular plate, and its tip faces the outside of the annular belt and is fixedly connected to the other long side edge of the plate body. The guiding part is provided on the two short side edges of the plate body. When the scraper moves into the vibration range, the guiding part slides into contact with the scraper vibration mechanism and receives vibration.

[0008] As another implementation of this technical solution, the scraper part is made of rubber, and both the plate and the scraper part are coated with an oleophobic coating. Accordingly, the scraper part made of rubber has a certain deformation capacity, wear resistance, and corrosion resistance, which can effectively prevent damage when the scraper part comes into contact with the open short side or when it is immersed in sewage and pushes suspended matter. In addition, the oleophobic coating on the plate and the scraper part can also effectively prevent the adhesion of impurities such as grease and suspended matter, and facilitate the shaking off of residual impurities under the vibration of the scraper vibration mechanism.

[0009] As another implementation of this technical solution, the guide part includes several balls, and several constricted holes are respectively opened on the two short side edges of the plate. The balls are rotatably embedded in the constricted holes, with a portion of the balls protruding outside the constricted holes. Accordingly, the scraper slides in contact with the scraper vibration mechanism through the balls on both sides and receives vibration, which can effectively prevent the scraper from wearing during movement and vibration.

[0010] As another implementation of this technical solution, the scraper vibration mechanism includes: two damping pads, two base plates, two mounting plates, at least one transmission rod, two guide plates, and a vibration motor. The two damping pads are fixedly attached to the upper sides of the outer side wall of the regulating tank facing the slag collection tank. The two base plates are vertically fixedly attached to the side wall of the two damping pads facing the slag collection tank. The mounting plates are L-shaped and vertically arranged. The ends of the horizontal sections of the two mounting plates are respectively fixedly attached to the two base plates. The at least one transmission rod connects the two horizontal sections. The guide plates have an arc-shaped surface and are vertically arranged, with their area being the vibration range. The two guide plates are fixedly attached to the inner side of the ends of the vertical sections of the two mounting plates, with their short side arc edges facing the scum removal mechanism, and are located above the tank opening. The vibration motor is mounted on the outer side wall of the vertical section of one of the mounting plates. Accordingly, the damping pad can create vibration isolation between the scraper vibration mechanism and the regulating pool, preventing the regulating pool from absorbing vibration force and reducing the vibration effect of the scraper vibration mechanism. The transmission rod can enable the mounting plates on both sides to drive the guide plate to vibrate in tandem. The arc-shaped surface of the guide plate can ensure that the scraper fully receives vibration force when moving within its area.

[0011] As another implementation of this technical solution, the scraper vibration mechanism further includes two rubber pads, which are respectively disposed on the opposite sides of the two guide plates. This increases the friction between the scraper and the balls, thereby improving the contact transmission effect.

[0012] As another implementation of this technical solution, the wastewater pretreatment equalization tank also includes a controller, which is located outside the equalization tank and electrically connected to the vibrating motor. This facilitates the coordinated operation of the scum removal mechanism and the scraper vibration mechanism.

[0013] As another implementation of this technical solution, the wastewater pretreatment equalization tank further includes an air flotation unit, which is installed on the bottom side wall of the wastewater equalization space and electrically connected to the controller. This facilitates the operation and control of the air flotation unit.

[0014] As another implementation of this technical solution, the wastewater pretreatment equalization tank further includes: a pH sensor, an alkaline tank, and an acidic tank. The pH sensor is installed on the side wall of the wastewater equalization space and electrically connected to the controller. The alkaline and acidic tanks are both located outside the equalization tank and are connected to it via connecting pipes. Pumps and solenoid valves, electrically connected to the controller, are respectively installed on the connecting pipes of the alkaline and acidic tanks. This facilitates the monitoring and control of the pH level of the wastewater within the equalization tank. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the wastewater pretreatment equalization tank with vibration-assisted slag discharge function according to the present invention. Figure 2 This is a side view of the wastewater pretreatment equalization tank with vibration-assisted slag discharge function according to the present invention. Figure 3 This is a top view schematic diagram of the wastewater pretreatment equalization tank with vibration-assisted slag discharge function according to the present invention; Figure 4 This is a side view of the combination of the equalization tank and the slag collection tank in this utility model; Figure 5 This is a schematic diagram of the scraper structure in this utility model; Figure 6 This is a schematic diagram of the scraper vibration mechanism in this utility model; Figure 7 This is a schematic diagram of the operating state of the scraper vibration mechanism in this utility model, which vibrates the scraper.

[0016] Explanation of symbols in the attached diagram: 1. Equalization tank; 11. Opening; 12. Recessed opening; 2. Scum removal mechanism; 21. Outlet fixing plate; 22. Inlet fixing plate; 23. Roller; 24. Circular belt; 25. Scraper; 251. Fixing rod; 252. Plate body; 253. Scraping part; 254. Ball bearing; 3. Scum collection tank; 31. Tank opening; 4. Scraper vibration mechanism; 41. Vibration damping pad; 42. Base plate; 43. Mounting plate; 44. Transmission rod; 45. Guide plate; 46. Vibration motor; 47. Rubber pad; 5. Controller; 6. Air flotation machine; 7. pH sensor; 81. Alkaline tank; 82. Acidic tank; 83. Solenoid valve. Detailed Implementation

[0017] The detailed description and technical content of this utility model are explained below with reference to the accompanying drawings. However, the accompanying drawings are provided for reference and illustration only and are not intended to limit this utility model.

[0018] In the context of this specification, any two or more embodiments of this utility model can be arbitrarily combined, and the resulting technical solutions are part of the original disclosure of this specification and also fall within the protection scope of this utility model.

[0019] like Figure 1 , Figure 2 and Figure 3 The diagram shown is a schematic representation of a specific embodiment of the wastewater pretreatment equalization tank with vibration-assisted sludge discharge function of this utility model. This wastewater pretreatment equalization tank with vibration-assisted sludge discharge function (hereinafter referred to as the wastewater pretreatment equalization tank) is connected between the bar screen of the wastewater treatment system and subsequent treatment devices (such as a biochemical treatment unit). More precisely, the equalization tank of the wastewater pretreatment equalization tank is connected between the preceding process device, such as the bar screen (not shown in the figure), and the subsequent process device, such as the biochemical treatment unit (not shown in the figure), via pipelines or flow channels. The wastewater pretreatment equalization tank includes an equalization tank 1, a scum removal mechanism 2, a scum collection tank 3, and a scraper vibration mechanism 4. The equalization tank 1 has a wastewater equalization space inside, and the upper part of the equalization tank 1 has an opening 11 that communicates with the wastewater equalization space. The scum removal mechanism 2 is installed on the upper part of the equalization tank 1. The scum collection tank 3 is located on the outside of the equalization tank 1, and the scum collection tank 3 has a scum collection space inside. The upper part of the scum collection tank 3 has a pool opening 31 that communicates with the scum collection space. Several scrapers 25 of the scum removal mechanism 2 circulate within the opening 11 to push suspended matter floating in the opening 11 into the scum collection space through the pool opening 31. The scraper vibration mechanism 4 is located on the upper part of the equalization tank 1 adjacent to the scum collection tank 3 and is located on the outer side of the end of the scum removal mechanism 2. The scraper vibration mechanism 4 vibrates the scrapers 25 that move into its vibration range to shake the suspended matter remaining on the scrapers 25 into the scum collection space.

[0020] Specifically, the opening 11 is rectangular, and the slag collection tank 3 is fixedly attached to the outer wall of the regulating tank 1 on one short side (shown as the right side in the figure) of the opening 11, and the height of the opening 11 is higher than the height of the tank opening 31. Figure 4As shown, to facilitate the scraper 25 in pushing the suspended solids on the upper layer of sewage in the sewage conditioning space out of the opening 11, the upper edge of the short side of the opening 11 of the adjacent sludge collection tank 3, i.e., the short side of the conditioning tank 1, has a downwardly recessed opening 12. The water level of the sewage in the sewage conditioning space is at least level with or slightly higher than the lower edge of the recess 12. This allows the suspended solids on the upper layer of sewage to flow into the sludge collection tank 3 through the recess 12, or to be pushed into the sludge collection tank 3 by the scraper 25. Overflow baffles (not shown in the figure) are usually installed on both sides of the sludge collection tank 3 and connected to the conditioning tank 1 to prevent overflow or splashing when suspended solids fall into the sludge collection tank 3. In addition, the side wall of the slag collection tank 3 facing the equalization tank 1 can be replaced by the side wall of the equalization tank 1, which is not shown in the structural diagram. Thus, the equalization tank 1 and the slag collection tank 3 share a side wall, which allows the suspended matter flowing out from the recess 12 to fall directly into the slag collection space and avoids splashing outwards at the upper edge of the side wall of the slag collection tank 3.

[0021] In this embodiment, the scum removal mechanism 2 includes four fixed plates, two rollers 23, two annular belts 24, a motor (not shown in the figure), and several scrapers 25. The four fixed plates are vertically arranged and divided into two outgoing end fixed plates 21 and two incoming end fixed plates 22. The two outgoing end fixed plates 21 are opposite each other and fixedly installed on both sides of the short side of the opening 11 adjacent to the scum collection tank 3. The two incoming end fixed plates 22 are opposite each other and fixedly installed on both sides of the short side of the opening 11 away from the scum collection tank 3. The line connecting the two outgoing end fixed plates 21 is located outside the opening 11, while the line connecting the two incoming end fixed plates 22 is located inside the opening 11. The two rollers 23 are parallel, and their ends are connected by bearing seats (…). (Not shown in the figure) The two rollers 23 are rotatably mounted on the two exit end fixing plates 21 and the two entry end fixing plates 22. The two annular belts 24 are parallel and their annular surfaces face each other and are respectively sleeved on the two ends of the two rollers 23. The motor is located outside the regulating tank 1 and its drive end is connected to the end of one of the rollers 23 that passes through the bearing seat. The scrapers 25 are evenly arranged between the two annular belts 24. The motor drives the rollers 23 to drive the two annular belts 24 to rotate and move synchronously. This causes the scrapers 25 to circulate from the short side of the opening 11 away from the slag collection tank 3 and enter the opening 11, pushing the floating suspended matter towards the slag collection tank 3. The scrapers also push the suspended matter out and fall into the slag collection space from the short side of the opening 11 adjacent to the slag collection tank 3. In the above structure, the line connecting the two exit end fixing plates 21 is set on the outside of the opening 11, so that the scraper 25 can be located above the pool opening 31 after it leaves the opening 11, so that the suspended matter on the scraper 25 shaken off by the scraper vibration mechanism 4 can fall directly into the slag collection space through the pool opening 31; while the line connecting the two inlet end fixing plates 22 is set on the inside of the opening 11, so that the scraper 25 moves in the area above the opening 11 before entering the opening 11, thereby preventing the small amount of sewage or suspended matter and other impurities remaining on the scraper 25 from falling to the outside of the equalization tank 1 during movement.

[0022] Furthermore, in combination Figure 5As shown, in this embodiment, the scraper 25 is composed of a fixed rod 251, a plate 252, a scraping part 253, and a guide part. The fixed rod 251 is horizontal and parallel to the roller 23, and its two ends are fixedly connected to the corresponding positions of the two annular belts 24. The plate 252 is rectangular and its long side edge is fixedly connected to the side wall of the fixed rod 251 facing the outside of the annular belt 24. The scraping part 253 is a triangular plate with its tip facing the outside of the annular belt 24 and is fixedly connected to the other long side edge of the plate 252. The guide part is provided on the two short side edges of the plate 252. When the scraper 25 moves into the vibration range, the guide part slides into contact with the scraper vibration mechanism 4 and receives vibration.

[0023] Furthermore, the scraper part 253 can be made of rubber. Both the plate 252 and the scraper part 253 can be coated with an oleophobic coating. The scraper part 253 made of rubber has a certain degree of deformation resistance, wear resistance, and corrosion resistance, which can effectively prevent the scraper part 253 from being damaged when it comes into contact with the short side of the opening 11 or when it is immersed in sewage and pushes suspended matter. The oleophobic coating on the plate 252 and the scraper part 253 can effectively prevent the adhesion of grease, suspended matter, and other impurities, and facilitates the shaking off of residual impurities under the vibration of the scraper vibration mechanism 4. In addition, the scraper 25 can move in the opposite direction (e.g., in the opposite direction of movement). Figure 2 The scraper 25 located at the bottom moves to the right, and the opposite direction is to the left. Its surface can form an angle of less than 90 degrees and greater than 75 degrees with the annular belt 24, thereby increasing the pushing area on the scraper 25 for pushing suspended objects. The guide part can include several balls 254. Several constricted holes (not shown in the figure) can be opened on the two short side edges of the plate 252. The balls 254 can be rolled and embedded in the constricted holes, with a part of the balls 254 exposed outside the constricted holes. Thus, the balls 254 on both sides of the scraper 25 slide in contact with the scraper vibration mechanism 4 and receive vibration, which can effectively prevent the scraper 25 from wearing during movement and vibration.

[0024] Combination Figure 6 and Figure 7As shown, in this embodiment, the scraper vibration mechanism 4 includes two damping pads 41, two base plates 42, two mounting plates 43, at least one transmission rod 44, two guide plates 45, and a vibration motor 46. The two damping pads 41 are fixedly attached to the upper sides of the outer side wall of the regulating tank 1 facing the slag collection tank 3. The two base plates 42 are vertically fixedly attached to the side wall of the two damping pads 41 facing the slag collection tank 3. The mounting plates 43 are L-shaped and vertically arranged. The ends of the horizontal sections of plate 43 are fixedly attached to the two base plates 42. At least one transmission rod 44 connects the two horizontal sections. The guide plate 45 has an arc-shaped surface and is vertically arranged, with its area being the vibration range. The two guide plates 45 are fixedly attached to the inner side of the ends of the vertical sections of the two mounting plates 43, with their short side arc edges facing the scum removal mechanism 2, and are located above the pool opening 31. The vibration motor 46 is mounted on the outer wall of the vertical section of one of the mounting plates 43. The damping pad 41 can be made of rubber. The damping pad 41 can form vibration isolation between the scraper vibration mechanism 4 and the regulating pool 1 to prevent the regulating pool 1 from absorbing vibration force and reducing the vibration effect of the scraper vibration mechanism 4. The transmission rod 44 can cause the mounting plates 43 on both sides to drive the guide plates 45 to vibrate together. The arc-shaped surface of the guide plate 45 can allow the scraper 25 to fully receive vibration force when moving within its area. In addition, the scraper vibration mechanism 4 may also include two rubber pads 47, which are respectively disposed on the opposite sides of the two guide plates 45, thereby increasing the friction between the guide plates 45 and the balls 254 and improving the contact transmission effect.

[0025] In this embodiment, the wastewater pretreatment equalization tank may also include a controller 5, which is located outside the equalization tank 1 and electrically connected to the vibration motor 46 and the motor, thereby facilitating the coordinated operation of the scum removal mechanism 2 and the scraper vibration mechanism 4.

[0026] In this embodiment, the wastewater pretreatment equalization tank may also include an air flotation machine 6. The air flotation machine 6 is installed on the bottom side wall of the wastewater equalization space and electrically connected to the controller 5, which facilitates the operation of the air flotation machine 6. The microbubbles generated by the air flotation machine 6 can cause the fine oil droplets, suspended solid particles and other substances in the wastewater to undergo physical adsorption and generate composite flocs. Since the density of the composite flocs is much smaller than that of the wastewater, they will float to the surface of the wastewater along with the microbubbles to form suspended solids.

[0027] In this embodiment, the wastewater pretreatment equalization tank may further include a pH sensor 7, an alkaline tank 81, and an acidic tank 82. The pH sensor 7 is installed on the side wall of the wastewater equalization space and is electrically connected to the controller 5. The alkaline tank 81 and the acidic tank 82 are used to hold alkaline and acidic agents, respectively. Both the alkaline tank 81 and the acidic tank 82 are located outside the equalization tank 1 and are connected to the equalization tank 1 through connecting pipes. The connecting pipes of the alkaline tank 81 and the acidic tank 82 are respectively equipped with a pump body (not shown in the figure) and a solenoid valve 83 electrically connected to the controller 5, thereby facilitating the monitoring and control of the acidity and alkalinity of the wastewater in the equalization tank 1.

[0028] In this embodiment, the controller 5 can be a manually controlled switch control circuit with a display, which can display the acidity or alkalinity value of the wastewater monitored by the pH sensor 7, and allow manual control of the opening and closing of components such as the vibrating motor 46, motor, flotation machine 6, pump, or solenoid valve 83 according to the wastewater pretreatment process. Alternatively, the controller 5 can be an automatic control circuit with a display, such as an automatic control circuit composed of a programmable logic controller (PLC) or microprocessor, which can automatically control the operation of the wastewater pretreatment equalization tank according to preset parameter conditions such as pH value. Given that the use of manual switch control circuits or automatic control circuits composed of PLCs or microprocessors to control the operating status of various components according to relevant instructions or sensor detection data is already a widely used and common control mode in the field of automation control, and is existing control technology, the process of using a controller to control the operation of various driving components in this utility model will not be described in detail.

[0029] In summary, the wastewater pretreatment equalization tank of this utility model can achieve the beneficial technical effect of preventing suspended matter from being brought back into the equalization tank by adding a scraper vibration mechanism to the outer side of the end of the scum removal mechanism to vibrate the scraper that has been removed from the opening. This vibrates the residual suspended matter on the scraper into the scum collection space of the scum collection tank.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the patent scope of the present utility model. Other equivalent changes made using the patent concept of the present utility model should all fall within the patent protection scope of the present utility model.

Claims

1. A wastewater pretreatment equalization tank with vibration-assisted sludge removal function, connected between the bar screen tank and the biological treatment unit of a wastewater treatment system, the wastewater pretreatment equalization tank comprising: The wastewater pretreatment equalization tank includes a scum removal mechanism and a scum collection tank. The equalization tank has a wastewater equalization space inside, and an opening at its upper part communicating with the wastewater equalization space. The scum removal mechanism is installed at the upper part of the equalization tank, and the scum collection tank is located outside the equalization tank. The scum collection tank has a scum collection space inside, and an opening at its upper part communicating with the scum collection space. Several scrapers of the scum removal mechanism circulate within the opening to push suspended matter floating in the opening into the scum collection space through the opening. The wastewater pretreatment equalization tank further includes a scraper vibration mechanism, which is located at the upper part of the equalization tank adjacent to the scum collection tank and outside the end of the scum removal mechanism. The scraper vibration mechanism vibrates the scrapers that move into its vibration range to shake residual suspended matter on the scrapers into the scum collection space.

2. The wastewater pretreatment equalization tank according to claim 1, characterized in that, The opening is rectangular, and the slag collection tank is fixedly attached to the outer wall of the regulating tank on one short side of the opening. The height of the opening is higher than the height of the tank opening. The slag removal mechanism includes: four fixed plates, two rollers, two annular belts, a motor, and several scrapers. The four fixed plates are vertically arranged and divided into two outgoing end fixed plates and two incoming end fixed plates. The two outgoing end fixed plates face each other and are fixedly installed on both sides of the short side of the opening adjacent to the slag collection tank. The two incoming end fixed plates face each other and are fixedly installed on both sides of the short side of the opening away from the slag collection tank. The line connecting the two outgoing end fixed plates is located outside the opening, while the line connecting the two incoming end fixed plates is located outside the... Inside the opening, two parallel rollers, each rotatably mounted on two exit end fixing plates and two inlet end fixing plates via bearing seats, are parallel to each other and their annular surfaces face each other, respectively fitted onto the two ends of the two rollers. A motor is located outside the regulating tank, and its drive end is connected to the end of one of the rollers that protrudes from the bearing seat. Several scrapers are evenly arranged between the two annular belts. Driven by the motor, the rollers drive the two annular belts to rotate and move synchronously, thereby driving the scrapers to circulate from the short side of the opening away from the slag collection tank into the opening and push the floating suspended matter towards the slag collection tank. The scrapers also push the suspended matter out and into the slag collection space from the short side of the opening adjacent to the slag collection tank.

3. The wastewater pretreatment equalization tank according to claim 2, characterized in that, The scraper consists of a fixed rod, a plate body, a scraping part, and a guide part. The fixed rod is horizontal and parallel to the roller, and its two ends are fixedly connected to the corresponding positions of the two annular belts. The plate body is rectangular, and one of its long side edges is fixedly connected to the side wall of the fixed rod facing the outside of the annular belt. The scraping part is a triangular sheet, and its tip faces the outside of the annular belt and is fixedly connected to the other long side edge of the plate body. The guide part is provided on the two short side edges of the plate body. When the scraper moves into the vibration range, the guide part slides into contact with the scraper vibration mechanism and receives vibration.

4. The wastewater pretreatment equalization tank according to claim 3, characterized in that, The scraping part is made of rubber, and both the plate and the scraping part are coated with an oleophobic coating.

5. The wastewater pretreatment equalization tank according to claim 3, characterized in that, The guide part includes several balls, and several constricted holes are respectively opened on the two short side edges of the plate. The balls are rotatably embedded in the constricted holes, with a part of the balls protruding outside the constricted holes.

6. The wastewater pretreatment equalization tank according to claim 5, characterized in that, The scraper vibration mechanism includes: two damping pads, two base plates, two mounting plates, at least one transmission rod, two guide plates, and a vibration motor. The two damping pads are fixedly attached to the upper sides of the outer side wall of the regulating tank facing the slag collection tank. The two base plates are vertically fixedly attached to the side wall of the two damping pads facing the slag collection tank. The mounting plates are L-shaped and vertically arranged. The ends of the horizontal sections of the two mounting plates are respectively fixedly attached to the two base plates. The at least one transmission rod connects the two horizontal sections. The guide plates are arc-shaped and vertically arranged, and their area is the vibration range. The two guide plates are fixedly attached to the inner side of the ends of the vertical sections of the two mounting plates and located above the tank opening, with their short arc edges facing the scum removal mechanism. The vibration motor is mounted on the outer side wall of the vertical section of one of the mounting plates.

7. The wastewater pretreatment equalization tank according to claim 6, characterized in that, The scraper vibration mechanism further includes two rubber pads, which are respectively disposed on the opposite sides of the two guide plates.

8. The wastewater pretreatment equalization tank according to claim 6, characterized in that, Also includes: A controller is located outside the regulating tank and is electrically connected to the vibration motor and the motor.

9. The wastewater pretreatment equalization tank according to claim 8, characterized in that, Also includes: An air flotation unit is installed on the bottom side wall of the wastewater conditioning space and electrically connected to the controller.

10. The wastewater pretreatment equalization tank according to claim 8, characterized in that, Also includes: The system includes a pH sensor, an alkaline tank, and an acidic tank. The pH sensor is installed on the side wall of the wastewater conditioning space and is electrically connected to the controller. The alkaline tank and the acidic tank are both located outside the conditioning tank and are connected to the conditioning tank through connecting pipes. The connecting pipes of the alkaline tank and the acidic tank are respectively equipped with a pump body and a solenoid valve that are electrically connected to the controller.

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