Coagulation dosing treatment inclined tube precipitation device

Abstract

The utility model discloses a coagulation dosing treatment inclined tube sedimentation device, which relates to the technical field of sewage treatment and comprises a coagulation tank and a sedimentation tank fixedly arranged on one side of the coagulation tank. The integral adjusting unit is arranged on the coagulation box; the adjusting and positioning unit is arranged on the settling box; the stirring assembly is arranged on the integral adjusting unit. According to the utility model, the servo motor operates to control the first screw rod to rotate forwards and backwards on the upright post, and one of the support cross bars which is in threaded connection with the first screw rod and is positioned on the strip-shaped through groove is stressed to drive the two support frames to lift and adjust on the outer side of the coagulation box; the rotating motors fixedly installed on the top faces of the two supporting frames can be matched with the stirring transverse plate to be adjusted along with the supporting frames to greatly stir water bodies at different height positions in the coagulation box, the stirring operation adjusting structure for coagulation treatment is low in preparation cost and stable in operation, and meanwhile the stirring effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a coagulation dosing treatment inclined tube sedimentation device. Background Technique

[0002] A sedimentation tank is a structure that uses sedimentation to remove suspended solids in water, a water purification device, which utilizes the natural sedimentation or coagulation sedimentation of water to remove suspended solids in water. In order to improve the sedimentation effect and reduce the land area, honeycomb inclined tube countercurrent sedimentation tanks, accelerated clarifiers, pulse clarifiers, etc. are mostly used. Sedimentation tanks are widely used in wastewater treatment. In the existing sedimentation tanks, the sewage and the coagulant are not mixed sufficiently during use, resulting in poor sedimentation effect of the sewage, and the sewage mixed in the sediment directly discharged with the sludge will cause a large amount of water resource waste.

[0003] The publication (announcement) number is CN220034171U, which discloses an inclined tube sedimentation tank capable of reducing sediment attachment, including: a treatment tank, a coagulation tank is opened on the left side of the top of the treatment tank, a water inlet pipe connected to the coagulation tank is arranged on the side wall of the treatment tank, a flocculation tank is opened at the center of the top of the treatment tank, a sedimentation tank is opened on the right side of the top of the treatment tank, a plurality of inclined tubes are uniformly arranged in the sedimentation tank, a conical mud hopper is connected to the bottom end of the sedimentation tank, and a sewage discharge pipe is connected to the center of the bottom end of the conical mud hopper. The utility model can enable the sewage and the coagulant to react fully, which is beneficial to the sedimentation of the sewage, can improve the mixing effect, is beneficial to the treatment of the sewage, the through holes on the movable plate can reduce the resistance received by the movable plate during movement, can reduce the load of the motor, is beneficial to the use of the motor, and can re-treat the sewage at the same time, can avoid the sewage being directly treated with the sludge, and can reduce the waste of water resources.

[0004] The above scheme can improve the effect of the full reaction between the sewage and the coagulant, but the stirring parts in both the coagulation tank and the flocculation tank need a set of lifting components to adjust the height. The lifting components are partially in the water body and are easy to be damaged, and the way of stirring the water body by the turbine blades driven by the water flow has a small stirring amplitude for the water body. The equipment has a high preparation cost for the stirring operation mobilization structure of the coagulation treatment and is unstable in operation. And the inclined tube fillers are closely placed in the sedimentation tank, making it difficult for personnel to carry out overall maintenance. Therefore, we propose a coagulation dosing treatment inclined tube sedimentation device. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a coagulation dosing treatment inclined tube sedimentation device, which solves the problems of high preparation cost and unstable operation of the stirring operation mobilization structure of the equipment for coagulation treatment by setting an overall adjustment unit.

[0006] To solve the above technical problems, the present utility model is realized through the following technical solutions: A coagulation dosing treatment inclined tube sedimentation device, including a coagulation tank and a sedimentation tank fixedly arranged on one side of the coagulation tank, further comprising: an overall adjustment unit arranged on the coagulation tank, a mobilization positioning unit arranged on the sedimentation tank, and a stirring assembly arranged on the overall adjustment unit;

[0007] The overall adjustment unit includes columns, a first screw rod, a support cross bar, a support frame, and a servo motor. There are two columns in total, symmetrically and fixedly arranged at the center of the opposite surfaces of the coagulation tank, and a strip-shaped through groove is formed on the side surface of the column. The first screw rod is movably arranged on the inner wall of one of the columns. There are two support cross bars in total and they are located on the strip-shaped through groove. One of the support cross bars is threadedly connected to the first screw rod. The support frame is in a "U" shape and there are two in total. The two ends of the support frame are connected to the top surfaces of the two support cross bars and are located outside the coagulation tank. The servo motor is fixedly installed on the bottom surface of the column and its output end is connected to the end surface of the first screw rod;

[0008] The mobilization positioning unit includes a strip-shaped box, a second screw rod, a support block, a support sleeve, a lifting plate, and a sedimentation inclined tube placement box. There are two strip-shaped boxes in total, symmetrically and fixedly embedded on the opposite surfaces of the sedimentation tank. The second screw rod is movably arranged on the inner wall of one of the strip-shaped boxes. There are two support blocks in total. One of the support blocks is threadedly connected to the second screw rod. One end of the support sleeve is connected to the top surface of the support block. The lifting plate is in an "L" shape and the concave surface thereof is connected to the end of the support sleeve that extends outside the strip-shaped box. The sedimentation inclined tube placement box is fixedly arranged at the bottom end of the lifting plate and is located inside the sedimentation tank. A positioning frame plate is fixedly arranged on the inner wall of the bottom end of the sedimentation inclined tube placement box.

[0009] Preferably, the overall adjustment unit further includes a first guide rod, which is fixedly arranged on the inner wall of the other column and movably penetrates through the other support cross bar.

[0010] Preferably, the mobilization positioning unit further includes a second guide rod, which is fixedly arranged on the inner wall of the other strip-shaped box and movably penetrates through the other support block. The support sleeve and the lifting plate are arranged in one-to-one correspondence with the support block.

[0011] Preferably, the stirring assembly includes a rotating motor, a rotating rod, and a stirring cross plate. The rotating motor is fixedly installed at the center of the top surface of the support frame. One end of the rotating rod is connected to the output end of the rotating motor. The stirring cross plate is fixedly arranged on the outer peripheral surface of the bottom end of the rotating rod. The stirring assembly is arranged in one-to-one correspondence with the support frame. A partition plate is fixedly arranged on the inner wall of the middle end of the coagulation tank.

[0012] Preferably, a liquid inlet through groove in an "L" shape is formed on one side surface of the precipitation tank close to the coagulation tank, and a strip-shaped liquid outlet groove communicated with the liquid inlet through groove is formed on the top surface of one side of the coagulation tank.

[0013] Preferably, a discharge hopper is fixedly arranged on the bottom surface of the precipitation tank, a sludge discharge pipe is installed at the bottom end of the discharge hopper, and a water outlet box is installed on the surface of one side of the top end of the precipitation tank.

[0014] Compared with the prior art, the coagulation dosing treatment inclined tube precipitation device of the present utility model has the following beneficial effects:

[0015] 1. In the present utility model, through the setting of the overall adjustment unit, the sewage to be treated contacts with the added coagulant in the coagulation tank. After the rotating motor drives the stirring cross plate to directly stir in the two intervals of the coagulation tank, the servo motor can be operated to control the first lead screw to rotate forward and backward on the column. One of the support cross bars threaded with the first lead screw and located on the strip-shaped through groove can drive two "U"-shaped support frames to lift and adjust outside the coagulation tank under the action of force. The other support cross bar can slide up and down on the first guide rod to cooperate with the adjustment of the support frame and provide auxiliary support for it. The rotating motors respectively fixedly installed on the top surfaces of the two support frames can cooperate with the stirring cross plate to move with the support frame to stir the water bodies at different heights in the coagulation tank in a large range. The stirring operation adjustment structure of the equipment for coagulation treatment has low preparation cost, stable operation and guaranteed stirring effect.

[0016] 2. In the present utility model, through the setting of the adjustment positioning unit, by holding the turntable, the second lead screw can be controlled to rotate forward and backward on the strip-shaped box. One of the blocks threaded with the second lead screw can drive the support sleeve to lift and adjust the exposed area on the strip-shaped box. The "L"-shaped lifting plate jacked by the support sleeve can help the inclined tube placement box for precipitation to lift and adjust the height position in the precipitation tank. The other block can slide up and down on the second guide rod to cooperate with the adjustment of the lifting plate and the inclined tube placement box for precipitation and provide auxiliary support for it. When the inclined tube placement box for precipitation is lifted to the outside of the top end of the precipitation tank, the whole inclined tube for precipitation can be withdrawn or placed into the inclined tube placement box for precipitation. When the inclined tube placement box for precipitation moves down to the deep inside of the precipitation tank, the inclined tube placement box for precipitation can complete the positioning and assembly. The assembly and maintenance operation of the inclined tube for precipitation on the sedimentation tank of the equipment is simple and flexible. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 This is the overall structural schematic diagram of a flocculation chemical dosing treatment inclined tube sedimentation device of the present utility model;

[0019] Figure 2 This is the top - view structural schematic diagram of a flocculation chemical dosing treatment inclined tube sedimentation device of the present utility model;

[0020] Figure 3 This is the present utility model Figure 2 The sectional view structural schematic diagram at A - A in it;

[0021] Figure 4 This is the present utility model Figure 2 The sectional view structural schematic diagram at B - B in it;

[0022] Figure 5 This is the present utility model Figure 2 The sectional view structural schematic diagram at C - C in it.

[0023] In the attached drawings, the list of components represented by each label is as follows:

[0024] 1. Flocculation box;

[0025] 2. Overall adjustment unit; 201. Column; 202. First lead screw; 203. Support cross bar; 204. Support frame; 205. Servo motor; 206. First guide rod;

[0026] 3. Transfer and positioning unit; 301. Striped box; 302. Second lead screw; 303. Support block; 304. Support sleeve; 305. Lifting plate; 306. Inclined tube sedimentation box for placement; 307. Second guide rod;

[0027] 4. Sedimentation box;

[0028] 5. Stirring assembly; 501. Rotating motor; 502. Rotating rod; 503. Stirring cross plate;

[0029] 6. Sludge discharge pipe;

[0030] 7. Water outlet box. Specific embodiments

[0031] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further elaborated below in conjunction with specific embodiments.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] Embodiment 1

[0035] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a flocculation chemical dosing treatment inclined tube sedimentation device includes a flocculation tank 1 and a sedimentation tank 4 fixedly arranged on one side of the flocculation tank 1, and further includes: an overall adjustment unit 2 arranged on the flocculation tank 1, a mobilization positioning unit 3 arranged on the sedimentation tank 4, and a stirring assembly 5 arranged on the overall adjustment unit 2;

[0036] The overall adjustment unit 2 includes columns 201, a first lead screw 202, support crossbars 203, support frames 204, and a servo motor 205. There are two columns 201 in total, which are symmetrically and fixedly arranged at the centers of the opposite surfaces of the flocculation tank 1, and a strip-shaped through groove is formed on the side surface of the column 201. The first lead screw 202 is movably arranged on the inner wall of one of the columns 201. There are two support crossbars 203 in total and they are located on the strip-shaped through groove. One of the support crossbars 203 is threadedly connected to the first lead screw 202. The support frames 204 are in a "U" shape and there are two in total. The two ends of the support frames 204 are connected to the top surfaces of the two support crossbars 203 and are located outside the flocculation tank 1. The servo motor 205 is fixedly installed on the bottom surface of the column 201 and its output end is connected to the end surface of the first lead screw 202;

[0037] The mobilization and positioning unit 3 includes a strip box 301, a second lead screw 302, a support block 303, a support sleeve 304, a lifting plate 305, and a sedimentation inclined tube placement box 306. There are two strip boxes 301 in total, which are symmetrically and fixedly embedded on the opposite surfaces of the sedimentation tank 4. The second lead screw 302 is movably arranged on the inner wall of one of the strip boxes 301. There are two support blocks 303 in total, and one of the support blocks 303 is threadedly connected to the second lead screw 302. One end of the support sleeve 304 is connected to the top surface of the support block 303. The lifting plate 305 is in an "L" shape, and its concave surface is connected to one end of the support sleeve 304 that extends out of the strip box 301. The sedimentation inclined tube placement box 306 is fixedly arranged at the bottom end of the lifting plate 305 and is located inside the sedimentation tank 4. A positioning frame plate is fixedly arranged on the inner wall of the bottom end of the sedimentation inclined tube placement box 306.

[0038] Furthermore, the overall adjustment unit 2 further includes a first guide rod 206. The first guide rod 206 is fixedly arranged on the inner wall of the other column 201 and movably penetrates through the other support cross bar 203.

[0039] Furthermore, the stirring assembly 5 includes a rotating motor 501, a rotating rod 502, and a stirring cross plate 503. The rotating motor 501 is fixedly installed at the center of the top surface of the support frame 204. One end of the rotating rod 502 is connected to the output end of the rotating motor 501. The stirring cross plate 503 is fixedly arranged on the outer peripheral surface of the bottom end of the rotating rod 502. The stirring assemblies 5 and the support frames 204 are arranged in a one-to-one correspondence. A partition plate is fixedly arranged on the inner wall of the middle end of the coagulation tank 1.

[0040] Furthermore, an "L"-shaped liquid inlet through groove is formed on the surface of one side of the sedimentation tank 4 close to the coagulation tank 1, and a strip-shaped liquid outlet groove communicated with the liquid inlet through groove is formed on the top surface of one side of the coagulation tank 1.

[0041] Furthermore, a discharge hopper is fixedly arranged on the bottom surface of the sedimentation tank 4, a sludge discharge pipe 6 is installed at the bottom end of the discharge hopper, and a water outlet box 7 is installed on the surface of one side of the top end of the sedimentation tank 4.

[0042] Through the overall adjustment unit 2, while the equipment has a low manufacturing cost and stable operation for the stirring operation of coagulation treatment, the stirring effect is ensured.

[0043] Embodiment 2

[0044] As Figure 1 、 Figure 3 and Figure 5 shown, a coagulation dosing treatment inclined tube sedimentation device includes a coagulation tank 1 and a sedimentation tank 4 fixedly arranged on one side of the coagulation tank 1, and further includes: an overall adjustment unit 2 arranged on the coagulation tank 1, a mobilization and positioning unit 3 arranged on the sedimentation tank 4, and a stirring assembly 5 arranged on the overall adjustment unit 2;

[0045] The overall adjustment unit 2 includes columns 201, a first lead screw 202, support crossbars 203, support frames 204, and a servo motor 205. There are two columns 201 in total, which are symmetrically and fixedly arranged at the centers of the opposite side surfaces of the concrete box 1. A strip-shaped through groove is provided on the side surface of the column 201. The first lead screw 202 is movably arranged on the inner wall of one of the columns 201. There are two support crossbars 203 in total and they are located on the strip-shaped through groove. One of the support crossbars 203 is threadedly connected to the first lead screw 202. The support frames 204 are in a "U" shape and there are two in total. The two ends of the support frames 204 are connected to the top surfaces of the two support crossbars 203 and are located outside the concrete box 1. The servo motor 205 is fixedly installed on the bottom surface of the column 201 and its output end is connected to the end surface of the first lead screw 202;

[0046] The transfer and positioning unit 3 includes a strip-shaped box 301, a second lead screw 302, a support block 303, a support sleeve 304, a lifting plate 305, and a sedimentation inclined tube placement box 306. There are two strip-shaped boxes 301 in total, which are symmetrically and fixedly embedded in the opposite side surfaces of the sedimentation tank 4. The second lead screw 302 is movably arranged on the inner wall of one of the strip-shaped boxes 301. There are two support blocks 303 in total. One of the support blocks 303 is threadedly connected to the second lead screw 302. One end of the support sleeve 304 is connected to the top surface of the support block 303. The lifting plate 305 is in an "L" shape and the concave surface thereof is connected to one end of the support sleeve 304 that extends out of the strip-shaped box 301. The sedimentation inclined tube placement box 306 is fixedly arranged at the bottom end of the lifting plate 305 and is located inside the sedimentation tank 4. A positioning frame plate is fixedly arranged on the inner wall of the bottom end of the sedimentation inclined tube placement box 306.

[0047] Further, the transfer and positioning unit 3 further includes a second guide rod 307. The second guide rod 307 is fixedly arranged on the inner wall of the other strip-shaped box 301 and movably penetrates through the other support block 303. The support sleeve 304 and the lifting plate 305 are arranged in one-to-one correspondence with the support block 303.

[0048] Further, an "L"-shaped liquid inlet through groove is provided on the side surface of the sedimentation tank 4 close to the concrete box 1, and a strip-shaped liquid outlet groove communicated with the liquid inlet through groove is provided on the top surface of one side of the concrete box 1.

[0049] Further, a discharge hopper is fixedly arranged on the bottom surface of the sedimentation tank 4. A sludge discharge pipe 6 is installed at the bottom end of the discharge hopper. A water outlet box 7 is installed on the top surface of one side of the sedimentation tank 4.

[0050] By means of the transfer and positioning unit 3, the assembly and maintenance operation of the sedimentation inclined tube on the sedimentation tank 4 by the equipment is simple, flexible and convenient.

[0051] The working principle of the present utility model is as follows:

[0052] The sewage to be treated comes into contact with the added coagulant in the coagulation tank 1. After the rotating motor 501 drives the stirring cross plate 503 to directly stir in the two intervals of the coagulation tank 1, the servo motor 205 operates to control the first lead screw 202 to rotate forward and backward on the column 201. One of the support cross bars 203 that is threadedly connected to the first lead screw 202 and is located on the strip-shaped through groove is driven by the force to drive the two support frames 204 to lift and adjust outside the coagulation tank 1. The other support cross bar 203 slides up and down on the first guide rod 206 to cooperate with the adjustment of the support frame 204. The rotating motors 501 fixedly installed on the top surfaces of the two support frames 204 can cooperate with the stirring cross plate 503 to move with the support frame 204 to vigorously stir the water bodies at different height positions in the coagulation tank 1. Hold the turntable to control the second lead screw 302 to rotate forward and backward on the strip-shaped box 301. One of the supporting blocks 303 that is threadedly connected to the second lead screw 302 is driven by the force to drive the support sleeve 304 to lift and adjust the exposed area on the strip-shaped box 301. The lifting plate 305 in an "L" shape is jacked up by the support sleeve 304 to help the sediment inclined tube placement box 306 to lift and adjust the height position in the sedimentation tank 4. The other supporting block 303 slides up and down on the second guide rod 307 to cooperate with the adjustment of the lifting plate 305 and the sediment inclined tube placement box 306. When the sediment inclined tube placement box 306 is lifted to the outside of the top of the sedimentation tank 4, the whole sediment inclined tube is withdrawn or placed into the sediment inclined tube placement box 306. When the sediment inclined tube placement box 306 moves down to the deep inside of the sedimentation tank 4, the sediment inclined tube placement box 306 can complete the positioning and assembly.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A coagulant dosing and treatment inclined tube sedimentation device, comprising a coagulation tank (1) and a sedimentation tank (4) fixedly arranged on one side of the coagulation tank (1), characterized in that, It also includes: An overall adjustment unit (2) arranged on the coagulation tank (1), a transfer and positioning unit (3) arranged on the sedimentation tank (4), and a stirring assembly (5) arranged on the overall adjustment unit (2); The overall adjustment unit (2) includes columns (201), a first lead screw (202), support crossbars (203), support frames (204), and a servo motor (205). There are two columns (201) in total, which are symmetrically and fixedly arranged at the centers of the opposite side surfaces of the coagulation tank (1). A strip-shaped through groove is provided on the side surface of the column (201). The first lead screw (202) is movably arranged on the inner wall of one of the columns (201). There are two support crossbars (203) in total and they are located on the strip-shaped through groove. One of the support crossbars (203) is threadedly connected to the first lead screw (202). The support frames (204) are in a "U" shape and there are two in total. The two ends of the support frame (204) are connected to the top surfaces of the two support crossbars (203) and are located outside the coagulation tank (1). The servo motor (205) is fixedly installed on the bottom surface of the column (201) and its output end is connected to the end surface of the first lead screw (202); The transfer and positioning unit (3) includes a strip-shaped box (301), a second lead screw (302), a support block (303), a support sleeve (304), a lifting plate (305), and a sedimentation inclined tube placement box (306). There are two strip-shaped boxes (301) in total, which are symmetrically and fixedly embedded in the opposite side surfaces of the sedimentation tank (4). The second lead screw (302) is movably arranged on the inner wall of one of the strip-shaped boxes (301). There are two support blocks (303) in total. One of the support blocks (303) is threadedly connected to the second lead screw (302). One end of the support sleeve (304) is connected to the top surface of the support block (303). The lifting plate (305) is in an "L" shape and the concave surface thereof is connected to the end of the support sleeve (304) that extends out of the strip-shaped box (301). The sedimentation inclined tube placement box (306) is fixedly arranged at the bottom end of the lifting plate (305) and is located inside the sedimentation tank (4). A positioning frame plate is fixedly arranged on the inner wall of the bottom end of the sedimentation inclined tube placement box (306).

2. The inclined tube sedimentation device for coagulant dosing treatment according to claim 1, wherein: The overall adjustment unit (2) further includes a first guide rod (206), and the first guide rod (206) is fixedly arranged on the inner wall of the other column (201) and movably penetrates through the other support crossbar (203).

3. The inclined tube sedimentation device for coagulant dosing treatment according to claim 1, wherein: The transfer and positioning unit (3) further includes a second guide rod (307), and the second guide rod (307) is fixedly arranged on the inner wall of the other strip-shaped box (301) and movably penetrates through the other support block (303). The support sleeve (304) and the lifting plate (305) are arranged in one-to-one correspondence with the support block (303).

4. A inclined tube sedimentation device for coagulant dosing treatment according to claim 1, characterized in that: The stirring assembly (5) includes a rotating motor (501), a rotating rod (502), and a stirring cross plate (503). The rotating motor (501) is fixedly installed at the center of the top surface of the support frame (204). One end of the rotating rod (502) is connected to the output end of the rotating motor (501). The stirring cross plate (503) is fixedly arranged on the outer peripheral surface of the bottom end of the rotating rod (502). The stirring assemblies (5) are arranged in one-to-one correspondence with the support frames (204). A partition is fixedly arranged on the inner wall of the middle end of the coagulation tank (1).

5. A flocculation chemical dosing treatment inclined tube sedimentation device according to claim 1, characterized in that: On one side surface of the sedimentation tank (4) close to the coagulation tank (1), a liquid inlet through groove in an "L" shape is formed. On one side top surface of the coagulation tank (1), a strip-shaped liquid outlet groove communicating with the liquid inlet through groove is formed.

6. A flocculation chemical dosing and inclined tube sedimentation device according to claim 1, characterized in that: A discharge hopper is fixedly arranged on the bottom surface of the sedimentation tank (4). A sludge discharge pipe (6) is installed at the bottom end of the discharge hopper. A water outlet box (7) is installed on one side surface at the top end of the sedimentation tank (4).

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