Rapid sedimentation system for sewage treatment

Abstract

The utility model discloses a rapid sedimentation system for sewage treatment. The rapid sedimentation system comprises a treatment tank and a mixing tank, a sedimentation tank is arranged on the rear side of the treatment tank, a slope is arranged on the bottom wall of the sedimentation tank, a clean water tank is arranged on the rear side of the sedimentation tank, the clean water tank is communicated with the rear side of the upper end of the sedimentation tank through uniformly distributed water pipes, and a sludge discharge pipeline is arranged at the lower end of the rear side of the sedimentation tank; the mixing tank is arranged on the front side of the treatment tank, a sewage pipeline is arranged on the front side surface of the mixing tank, a partition wall is arranged in the middle of the bottom wall of the mixing tank, avoiding grooves which are uniformly distributed are formed in the lower end of the partition wall, a first mixing mechanism is arranged on the front side of the mixing tank, and a second mixing mechanism is arranged on the rear side of the mixing tank; according to the rapid sedimentation system for sewage treatment, sedimentation of sludge is accelerated through the slope of the sedimentation tank, and a flocculating agent and the sludge are fused more sufficiently by adding the flocculating agent for multiple times.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a rapid sedimentation system for sewage treatment. Background Art

[0002] Wastewater treatment usually includes physical processes such as gravity sedimentation, coagulation and clarification, flotation separation of solid particles and floating objects, degradation of biological pollutants, and decomposition and separation of chemical pollutants through chemical and physicochemical methods. The impurities suspended in the water are then coagulated and settled to output water bodies with water quality that meets the water quality requirements of some usage scenarios.

[0003] The rapid sedimentation system usually mixes sewage and flocculants and sends them into the sedimentation tank for separation. The sewage pump extracts the sludge from the lower end of the sedimentation tank. However, the bottom wall of the sedimentation tank is usually horizontal, and the flocculants settle slowly. At the same time, due to the large mixing tank, the area that the motor can stir is limited, and the combination of flocculants and sewage is also poor. For this reason, we propose a rapid sedimentation system for sewage treatment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a rapid sedimentation system for sewage treatment, which accelerates the sedimentation of sludge by means of the slope of the sedimentation tank, and makes the flocculant and sludge merge more fully by adding flocculants multiple times, thereby effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rapid sedimentation system for sewage treatment, comprising a treatment tank and a mixing tank;

[0006] Treatment tank: A sedimentation tank is arranged at the rear side of the treatment tank, the bottom wall of the sedimentation tank is provided with a slope, a clear water tank is arranged at the rear side of the sedimentation tank, the clear water tank is connected to the rear side of the upper end of the sedimentation tank through evenly distributed water pipes, and a sludge discharge pipe is arranged at the lower end of the rear side of the sedimentation tank;

[0007] Mixing tank: It is arranged at the front side of the treatment tank, a sewage pipe is provided on the front side of the mixing tank, a partition wall is provided in the middle of the bottom wall of the mixing tank, and evenly distributed avoidance grooves are opened at the lower end of the partition wall. A first mixing mechanism is provided on the front side of the mixing tank, and a second mixing mechanism is provided on the rear side of the mixing tank. The slope of the sedimentation tank is used to accelerate the sedimentation of the sludge, and the flocculant and sludge are more fully fused by adding flocculants multiple times.

[0008] Furthermore, it also includes a control switch group, which is arranged on the left side of the treatment tank, and the input end of the control switch group is electrically connected to an external power supply to control the motor.

[0009] Furthermore, the first mixing mechanism includes a stirring shaft, a motor 1, a pulley 1 and a pulley 2. The stirring shaft is rotatably connected between the front ends of the left and right inner walls of the mixing tank. The outer fixed sleeve on the left side of the stirring shaft is provided with a pulley 2, and the pulley 2 is located on the left side of the mixing tank. The front and rear sides of the upper end of the mixing tank are fixedly connected with support frames, the left side of the front support frame is fixedly connected with a support plate 2, the upper surface of the support plate 2 is fixedly connected with a motor 1, the output shaft fixed sleeve of the motor 1 is provided with a pulley 1, the pulley 1 and the pulley 2 are connected by belt drive, and the input end of the motor 1 is electrically connected to the output end of the control switch group to preliminarily mix the sewage and the flocculant.

[0010] Furthermore, the second mixing mechanism includes a second motor, a rotating shaft and a turbine. A support plate one is fixedly connected to the middle of the rear support frame, a second motor is fixedly connected to the upper surface of the support plate one, a rotating shaft is fixedly connected to the lower end of the output shaft of the second motor, a turbine is fixedly sleeved on the outer portion of the lower end of the rotating shaft, and an input end of the second motor is electrically connected to an output end of the control switch group to mix the sewage and flocculant again.

[0011] Furthermore, the second mixing mechanism also includes a mixing tank. The rear side of the bottom wall of the mixing tank is provided with a mixing tank, and the turbine is located inside the mixing tank to facilitate the formation of a vortex.

[0012] Furthermore, a flocculant pipe 1 is provided at the upper end of the sewage pipe, and a flocculant pipe 2 is connected to the upper surface of the support plate 1 by bolts. The flocculant pipe 2 corresponds to the upper and lower positions of the mixing tank to achieve multiple additions of flocculants.

[0013] Furthermore, an inclined plate is provided at the upper end of the sedimentation tank, and an inclined sedimentation block is fixedly connected between the inclined plate and the rear wall of the sedimentation tank. The interior of the inclined sedimentation block is provided with evenly distributed inclined holes, and the water pipes are all located at the upper end of the inclined sedimentation block, so as to facilitate the rapid separation of floating flocculants and water.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the rapid sedimentation system for sewage treatment has the following advantages:

[0015] 1. Sewage is sent in from the sewage pipe, and motor 1 and motor 2 are turned on by controlling the switch group. The output shaft of motor 1 drives pulley 1 to rotate, and pulley 1 drives pulley 2 to rotate through the belt. The output shaft of pulley 2 drives the stirring shaft to rotate, and the sewage and flocculant are initially mixed to form flocs. The stirring shaft rotates clockwise to facilitate the sewage mixed with flocculants from the avoidance tank to the back side of the mixing tank. The output shaft of motor 1 drives the rotating shaft to rotate, and the turbine rotates inside the mixing tank. The turbine draws sewage from top to bottom to form a vortex. The sewage in the corners at the back side of the mixing tank is sucked into the vortex, and the flocculant falls into the inside of the mixing tank from the flocculant pipe 2, thereby forming a larger floc, so that the flocculant and sewage are mixed more evenly and fully, which is convenient for subsequent thorough separation in the sedimentation tank.

[0016] 2. Flocs and sewage enter the sedimentation tank. Due to the obstruction of the inclined plate, the flow rate of flocs and sewage entering the sedimentation tank is greatly reduced, reducing the shaking amplitude of flocs and sewage inside the sedimentation tank. The bottom wall of the sedimentation tank is provided with a slope, and the flocs settle faster. Sewage with small flocs enters the inclined hole inside the inclined sedimentation block, and the flocs and water are quickly separated inside the inclined hole, so that the water at the upper end of the inclined sedimentation block is all clean water. The clean water enters the clean water tank through the water pipe and is discharged. The sludge formed by the flocs falls to the rear end of the lower side of the sedimentation tank and is pumped out through the sludge discharge pipe by the sewage pump, thereby achieving faster sludge sedimentation by inclined sedimentation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0019] In the figure: 1 treatment tank, 2 mixing tank, 3 sedimentation tank, 4 partition wall, 5 slope, 6 first mixing mechanism, 61 stirring shaft, 62 motor 1, 63 pulley 1, 64 pulley 2, 7 second mixing mechanism, 71 motor 2, 72 mixing tank, 73 rotating shaft, 74 turbine, 8 clear water tank, 9 inclined sedimentation block, 10 inclined plate, 11 sludge discharge pipe, 12 flocculant pipe 1, 13 flocculant pipe 2, 14 support frame, 15 support plate 1, 16 support plate 2, 17 sewage pipe, 18 control switch group, 19 water pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-2 ,This embodiment provides a technical solution: a rapid sedimentation system for sewage treatment, comprising a treatment tank 1 and a mixing tank 2;

[0022] Treatment tank 1: A sedimentation tank 3 is arranged at the rear side of the treatment tank 1, and a slope 5 is arranged on the bottom wall of the sedimentation tank 3. A clean water tank 8 is arranged at the rear side of the sedimentation tank 3. The clean water tank 8 is connected to the rear side of the upper end of the sedimentation tank 3 through a uniformly distributed water pipe 19. A sludge discharge pipe 11 is arranged at the lower end of the rear side of the sedimentation tank 3. An inclined plate 10 is arranged at the upper end of the sedimentation tank 3. An inclined sedimentation block 9 is fixedly connected between the inclined plate 10 and the rear wall of the sedimentation tank 3. The inclined sedimentation block 9 is provided with uniformly distributed inclined holes. The water pipes 19 are all located at the upper end of the inclined sedimentation block 9. Flocculants and sewage enter the sedimentation tank 3. Due to the obstruction of the inclined plate 10, the flow rate of the flocculants and sewage after entering the sedimentation tank 3 is greatly reduced, reducing the shaking amplitude of the flocculants and sewage inside the sedimentation tank 3. The bottom wall of the sedimentation tank 3 is provided with a slope 5, and the flocculants settle faster. The sewage with small flocculants enters the inclined hole inside the inclined sedimentation block 9, and the flocculants and water are quickly separated inside the inclined hole, so that the water at the upper end of the inclined sedimentation block 9 is all clean water. The clean water enters the clean water tank 8 through the water pipe 19 and is discharged. The sludge formed by the flocculants floats to the rear end of the lower side of the sedimentation tank 3 and is pumped out by the sewage pump through the sludge discharge pipe 11;

[0023] Mixing tank 2: It is arranged at the front side of treatment tank 1, a sewage pipe 17 is arranged on the front side of mixing tank 2, a partition wall 4 is arranged in the middle of the bottom wall of mixing tank 2, and a uniformly distributed avoidance groove is opened at the lower end of partition wall 4, a first mixing mechanism 6 is arranged on the front side of mixing tank 2, a second mixing mechanism 7 is arranged on the rear side of mixing tank 2, the first mixing mechanism 6 comprises a stirring shaft 61, a motor 1 62, a pulley 1 63 and a pulley 2 64, a stirring shaft 61 is rotatably connected between the front ends of the inner walls on the left and right sides of mixing tank 2, a pulley 2 64 is arranged on the outer fixed sleeve on the left side of stirring shaft 61, and pulley 2 64 is located on the left side of mixing tank 2, a support frame 14 is fixedly connected to the front and rear sides of the upper end of mixing tank 2, a support plate 2 16 is fixedly connected to the left side of the support frame 14 on the front side, a motor 1 62 is fixedly connected to the upper surface of support plate 2 16, and a pulley 1 63 is arranged on the output shaft fixed sleeve of motor 1 62, Pulley one 63 and pulley two 64 are connected by belt transmission, the input end of motor one 62 is electrically connected to the output end of control switch group 18, the second mixing mechanism 7 includes motor two 71, rotating shaft 73 and turbine 74, the middle part of the rear support frame 14 is fixedly connected with support plate one 15, the upper surface of support plate one 15 is fixedly connected with motor two 71, the lower end of the output shaft of motor two 71 is fixedly connected with rotating shaft 73, the lower end of rotating shaft 73 is fixedly sleeved with turbine 74, the input end of motor two 71 is electrically connected to the output end of control switch group 18, the second mixing mechanism 7 also includes mixing tank 72, the rear side of the bottom wall of mixing tank 2 is provided with mixing tank 72, the turbine 74 is located inside the mixing tank 72, the upper end of sewage pipe 17 is provided with flocculant pipe one 12, the upper surface of support plate one 15 is connected with flocculant pipe two 13 by bolts, and flocculant pipe two 13 corresponds to the upper and lower positions of mixing tank 72.

[0024] Among them: it also includes a control switch group 18, which is arranged on the left side of the treatment pool 1, and the input end of the control switch group 18 is electrically connected to an external power supply.

[0025] The working principle of a rapid sedimentation system for sewage treatment provided by the utility model is as follows: the outlet of the sludge discharge pipe 11 is connected to the sewage pump, and flocculants are respectively introduced into the flocculant pipe 12 and the flocculant pipe 2 13, and sewage is sent in from the sewage pipe 17, and the motor 1 62 and the motor 2 71 are turned on by the control switch group 18, and the output shaft of the motor 1 62 drives the pulley 1 63 to rotate, and the pulley 1 63 drives the pulley 2 64 to rotate through the belt, and the output shaft of the pulley 2 64 drives the stirring shaft 61 to rotate, and the sewage and the flocculant are preliminarily mixed to form floccules, and the stirring shaft 61 rotates clockwise to facilitate the sewage mixed with the flocculant to be sent from the avoidance tank to the rear side of the mixing tank 2, and the output shaft of the motor 1 62 drives the rotating shaft 73 to rotate, and the turbine 74 rotates inside the mixing tank 72, and the turbine 74 moves the sewage from top to bottom Downward extraction forms a vortex, and the sewage located in the rear corner of the mixing tank 72 is sucked into the vortex. The flocculant falls into the interior of the mixing tank 72 from the flocculant pipe 13, thereby forming a larger floc, and then the floc and sewage enter the interior of the sedimentation tank 3. Due to the obstruction of the inclined plate 10, the flow rate of the floc and sewage after entering the sedimentation tank 3 is greatly reduced, reducing the shaking amplitude of the floc and sewage inside the sedimentation tank 3. The bottom wall of the sedimentation tank 3 is provided with a slope 5, and the floc settles faster. The sewage with small flocs enters the inclined hole inside the inclined sedimentation block 9, and the floc and water are quickly separated inside the inclined hole, so that the water at the upper end of the inclined sedimentation block 9 is all clean water. The clean water enters the clean water tank 8 through the water pipe 19 and is then discharged. The sludge formed by the floc falls to the rear end of the lower side of the sedimentation tank 3 and is then pumped out through the sludge discharge pipe 11 by the sewage pump.

[0026] It is worth noting that the motor 1 62 disclosed in the above embodiment can be a YVF3 motor, and the motor 2 71 can be a YE3-132S-4 three-phase asynchronous motor. The control switch group 18 is provided with switch buttons corresponding to the motor 1 62 and the motor 2 71 for controlling their switching operation.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rapid sedimentation system for sewage treatment, characterized in that: It comprises a treatment tank (1) and a mixing tank (2); Treatment tank (1): a sedimentation tank (3) is arranged at the rear side of the treatment tank (1), a slope (5) is arranged on the bottom wall of the sedimentation tank (3), a clean water tank (8) is arranged at the rear side of the sedimentation tank (3), the clean water tank (8) is connected to the rear side of the upper end of the sedimentation tank (3) through evenly distributed water pipes (19), and a sludge discharge pipe (11) is arranged at the lower end of the rear side of the sedimentation tank (3); A mixing tank (2): It is arranged at the front side of the treatment tank (1), a sewage pipe (17) is arranged on the front side of the mixing tank (2), a partition wall (4) is arranged in the middle of the bottom wall of the mixing tank (2), and evenly distributed avoidance grooves are opened at the lower end of the partition wall (4), a first mixing mechanism (6) is arranged on the front side of the mixing tank (2), and a second mixing mechanism (7) is arranged on the rear side of the mixing tank (2).

2. A rapid sedimentation system for sewage treatment according to claim 1, characterized in that: It also comprises a control switch group (18), wherein the control switch group (18) is arranged on the left side of the treatment pool (1), and the input end of the control switch group (18) is electrically connected to an external power supply.

3. A rapid sedimentation system for sewage treatment according to claim 2, characterized in that: The first mixing mechanism (6) comprises a stirring shaft (61), a motor (62), a pulley (63) and a pulley (64). The stirring shaft (61) is rotatably connected between the front ends of the inner walls on the left and right sides of the mixing tank (2). The outer fixed sleeve on the left side of the stirring shaft (61) is provided with a pulley (64). The pulley (64) is located on the left side of the mixing tank (2). The front and rear sides of the upper end of the mixing tank (2) are fixedly connected with a support frame (14). The left side of the front support frame (14) is fixedly connected with a support plate (16). The upper surface of the support plate (16) is fixedly connected with the motor (62). The output shaft fixed sleeve of the motor (62) is provided with a pulley (63). The pulley (63) and the pulley (64) are connected by belt transmission. The input end of the motor (62) is electrically connected to the output end of the control switch group (18).

4. A rapid sedimentation system for sewage treatment according to claim 2, characterized in that: The second mixing mechanism (7) comprises a second motor (71), a rotating shaft (73) and a turbine (74); a support plate (15) is fixedly connected to the middle of the rear support frame (14); the upper surface of the support plate (15) is fixedly connected to the second motor (71); the lower end of the output shaft of the second motor (71) is fixedly connected to the rotating shaft (73); the lower end of the rotating shaft (73) is fixedly sleeved with a turbine (74); and the input end of the second motor (71) is electrically connected to the output end of the control switch group (18).

5. A rapid sedimentation system for sewage treatment according to claim 4, characterized in that: The second mixing mechanism (7) further comprises a mixing groove (72). The mixing groove (72) is provided on the rear side of the bottom wall of the mixing pool (2), and the turbine (74) is located inside the mixing groove (72).

6. A rapid sedimentation system for sewage treatment according to claim 5, characterized in that: A flocculant pipe 1 (12) is provided at the upper end of the sewage pipe (17), and a flocculant pipe 2 (13) is connected to the upper surface of the support plate 1 (15) by bolts, and the flocculant pipe 2 (13) corresponds to the upper and lower positions of the mixing tank (72).

7. A rapid sedimentation system for sewage treatment according to claim 1, characterized in that: An inclined plate (10) is provided at the upper end of the sedimentation tank (3); an inclined sedimentation block (9) is fixedly connected between the inclined plate (10) and the rear wall of the sedimentation tank (3); evenly distributed inclined holes are provided inside the inclined sedimentation block (9); and the water pipes (19) are all located at the upper end of the inclined sedimentation block (9).

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