CN220633140U - Sewage treatment system of concrete mixing plant - Google Patents

Abstract

The application provides a concrete mixing plant sewage treatment system to the unstable problem of sewage turbidity after the present concrete mixing plant handles, relates to building engineering equipment technical field. The sewage treatment system comprises a primary sedimentation tank, a secondary sedimentation tank, a tertiary sedimentation tank, a turbidity adjusting tank communicated with the tertiary sedimentation tank, a first turbidity detector arranged in the turbidity adjusting tank, a clear water source connected with the turbidity adjusting tank through a first pipeline, and a first control valve arranged on the first pipeline. When the first turbidity detector detects that the turbidity does not meet the use requirement, the first control valve is opened, and the clean water source injects clean water into the turbidity adjusting tank so as to adjust the turbidity of the water in the turbidity adjusting tank. The system can ensure the stability of the turbidity of the treated sewage, so that the recycled sewage can meet the use requirement, and the stability of the concrete quality is ensured.

Description

Sewage treatment system of concrete mixing plant

Technical Field

The utility model relates to the technical field of constructional engineering equipment, in particular to a sewage treatment system of a concrete mixing plant.

Background

A large amount of wastewater and sewage can be generated in the production process of the concrete mixing plant, so that energy conservation and emission reduction are realized, the production cost is reduced, and more concrete mixing plants can recycle the sewage in the production process at present.

However, the sewage generated by the concrete mixing plant at present is generally simply treated by a sedimentation tank so as to be recycled. Although the sewage treated by the sedimentation tank can remove most of impurities such as silt in the sewage, the turbidity of the treated sewage is unstable, which easily leads to unstable concrete performance, thereby causing the reduction of product quality.

Disclosure of Invention

To the unstable problem of sewage turbidity after the current concrete mixing plant handles, reuse leads to the unstable performance of concrete easily, the application provides a concrete mixing plant sewage treatment system, this system can guarantee the turbid stability of sewage after handling to make reuse's sewage can satisfy the operation requirement, guarantee the stability of concrete quality.

The technical scheme adopted for solving the technical problems is as follows:

the sewage treatment system of the concrete mixing plant comprises a primary sedimentation tank, a secondary sedimentation tank, a tertiary sedimentation tank and a turbidity adjusting tank communicated with the tertiary sedimentation tank, wherein a first turbidity detector is arranged in the turbidity adjusting tank, the turbidity adjusting tank is connected with a clean water source through a first pipeline, and a first control valve is arranged on the first pipeline;

when the first turbidity detector detects that the turbidity does not meet the use requirement, the first control valve is opened, and the clean water source injects clean water into the turbidity adjusting tank so as to adjust the turbidity of the water in the turbidity adjusting tank.

Further, the device also comprises a clean water tank, wherein the inner space of the turbidity adjusting tank is divided into a detection area and an adjusting area, the detection area is communicated with the clean water tank through a second pipeline, a second control valve is arranged on the second pipeline, the three-stage sedimentation tank is communicated with the detection area, the first pipeline is communicated with the adjusting area, and the first turbidity detector is arranged in the detection area;

if the turbidity detected by the first turbidity detector meets the use standard, the second control valve is opened, the first control valve is closed, and water purified by the three-stage sedimentation tank flows into the water purifying tank through the detection area;

if the turbidity detected by the first turbidity detector does not meet the use standard, the second control is closed, the first control valve is opened, water purified by the three-stage sedimentation tank enters the adjusting area through the detection area, and meanwhile, clean water is injected into the adjusting area to adjust the turbidity of the water.

Further, a bottom plate is arranged in the turbidity adjusting tank, a first overflow wall is arranged on the bottom plate, and the bottom plate, the first overflow wall and the side wall of the turbidity adjusting tank jointly form the detection area.

Further, a support rib table for supporting the bottom plate is arranged below the bottom plate.

Further, a second turbidity detector is arranged in the adjusting area of the turbidity adjusting tank, a flow adjusting valve is arranged on the first pipeline, and the control unit can control the flow adjusting valve according to signals fed back by the second turbidity detector so as to adjust the flow when the clean water is injected.

Further, the first pipeline comprises a main pipeline and a plurality of branch pipelines, the branch pipelines penetrate through the side wall of the turbidity adjusting tank and extend to the inside of the turbidity adjusting tank, the branch pipelines are located below the detection area, and the branch pipelines are uniformly arranged along the length direction of the first overflow wall of the detection area.

Further, the main pipeline pass through fixed subassembly fixed set up in on the lateral wall of turbidity equalizing basin, fixed subassembly including being used for the bearing the support frame and the U type bolt of main pipeline, the main pipeline pass through U type bolt and tighten on the support frame.

Further, a first guide wall and a second guide wall are respectively arranged on two opposite side walls of the three-stage sedimentation tank, and the side walls of the first guide wall, the second guide wall and the three-stage sedimentation tank jointly form a serpentine flow channel.

Further, an arc-shaped guide plate is arranged on the side wall of the three-stage sedimentation tank at the bending position of the serpentine flow channel.

Further, a mud guard is arranged at the bottom of the serpentine flow passage, and the mud guard is perpendicular to the flowing direction of the water flow.

The beneficial effects of the utility model are as follows:

according to the sewage treatment system of the concrete mixing plant, the turbidity detector for detecting the turbidity of sewage is arranged in the three-stage sedimentation tank, the turbidity of the sewage is detected in real time, and the clear water is injected into the three-stage sedimentation tank according to the information fed back by the turbidity detector, so that the turbidity of the sewage is regulated, and the turbidity of the treated sewage can reach the use standard. Therefore, the recycling of sewage can be realized, the turbidity of the treated sewage can be ensured to meet the use standard, and the quality of concrete products is further ensured.

Drawings

Fig. 1 is a schematic perspective view of a sewage treatment system of a concrete mixing plant according to an embodiment of the present disclosure;

fig. 2 is a schematic perspective view of a sewage treatment system of a concrete mixing plant according to an embodiment of the present disclosure;

FIG. 3 is an enlarged schematic view of the portion A in FIG. 1;

FIG. 4 is an enlarged schematic view of the portion B of FIG. 2;

FIG. 5 is a top view of a concrete batching plant sewage treatment system according to one embodiment of the present application;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

FIG. 7 is a cross-sectional view B-B in FIG. 5;

fig. 8 is a schematic three-dimensional structure of a sewage treatment system of a concrete mixing plant according to an embodiment of the present application.

In the figure: 1. a third-stage sedimentation tank; 11. a first overflow port; 12. a second overflow port; 13. a first guide wall; 131. a first arc deflector; 14. a second guide wall; 141. a second arc deflector; 15. a mud guard;

2. a turbidity adjusting tank; 21. a bottom plate; 22. a first overflow wall; 23. a detection zone; 24. a conditioning zone; 25. a support rib stand;

3. a clean water tank;

4. a first pipe; 41. a main pipe; 411. a first control valve; 42. a branch pipe;

5. a second pipe; 51. a second control valve;

6. a fixing assembly; 611. a vertical beam; 612. a bolster; 613. diagonal bracing; 62. u-shaped bolts.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings in the embodiments of the present application, and the described embodiments are only some embodiments, but not all embodiments of the present application. All other embodiments obtained without inventive effort by a person skilled in the art on the basis of the embodiments of the present application shall fall within the scope of protection of the present application.

For convenience of description, the coordinate system is defined as shown in fig. 1, and the left-right direction is a transverse direction, the front-back direction is a longitudinal direction, and the up-down direction is a vertical direction.

Example 1

As shown in fig. 1 and 2, a sewage treatment system of a concrete mixing plant comprises a primary sedimentation tank (not shown in the figure), a secondary sedimentation tank (not shown in the figure), a tertiary sedimentation tank 1 and a turbidity adjusting tank 2, wherein the tertiary sedimentation tank 1 is communicated with the turbidity adjusting tank 2. During operation, sewage flows into the turbidity adjusting tank 2 after passing through primary sedimentation in the primary sedimentation tank, secondary sedimentation in the secondary sedimentation tank and tertiary sedimentation in the tertiary sedimentation tank 1 in sequence.

The primary sedimentation tank and the secondary sedimentation tank are adopted in the prior art, and specific results are not repeated here.

The turbidity control tank 2 is internally provided with a first turbidity detector (not shown in the figure) for detecting turbidity, the turbidity control tank 2 is connected with a clean water source through a first pipeline 4, and the first pipeline 4 is provided with a first control valve 411 for controlling the on-off of the first pipeline 4. When the first turbidity detector detects that the turbidity of the water in the turbidity adjusting tank 2 does not meet the use requirement, the first control valve 411 is opened, and the clean water source injects clean water into the turbidity adjusting tank 2 to adjust the turbidity of the water in the turbidity adjusting tank 2 until the turbidity detected by the first turbidity detector meets the use requirement. When the first turbidity detector detects that the turbidity of the water in the turbidity adjusting tank 2 meets the use requirement, the first control valve 411 is closed, and the water in the turbidity adjusting tank 2 is directly utilized by the concrete mixing plant.

As a specific embodiment, the three-stage sedimentation tank 1 and the turbidity adjusting tank 2 in this embodiment adopt a monolithic structure, that is, the three-stage sedimentation tank 1 and the turbidity adjusting tank 2 share one side wall, and for convenience of description, the common side wall of the three-stage sedimentation tank 1 and the turbidity adjusting tank 2 is defined as a partition wall. The partition wall is provided with a first overflow port 11, and water in the three-stage sedimentation tank 1 can overflow into the turbidity adjusting tank 2 through the first overflow port 11.

Further, as shown in fig. 1 and 3, the sewage treatment system of the concrete mixing plant further comprises a clean water tank 3, the internal space of the turbidity adjusting tank 2 is divided into a detection area 23 and an adjusting area 24, and water in the detection area 23 can enter the adjusting area 24 in an overflow mode. The detection area 23 of the turbidity adjusting tank 2 is communicated with the clean water tank 3 through a second pipeline 5, and a second control valve 51 for controlling the on-off of the second pipeline 5 is arranged on the second pipeline 5. The three-stage sedimentation tank 1 is communicated with a detection zone 23 of the turbidity adjusting tank 2 through a first overflow port 11, and the first pipeline 4 is communicated with an adjusting zone 24 of the turbidity adjusting tank 2. The first turbidity detector is arranged in the detection area 23 of the turbidity adjusting tank 2. The water passing through the three-stage sedimentation tank 1 firstly enters the detection zone 23 of the turbidity adjustment tank 2 through the first overflow port 11, and the turbidity of the water flowing into the detection zone 23 is detected by the first turbidity detector in the detection zone 23. If the turbidity detected by the first turbidity detector meets the use standard, the second control valve 51 is opened, and water purified by the three-stage sedimentation tank 1 can flow into the clean water tank through the detection area 23 for standby. If the turbidity detected by the first turbidity detector does not meet the use standard, the second control is closed, and the water purified by the three-stage sedimentation tank 1 enters the detection area 23 through the first overflow port 11, and overflows from the detection area 23 to the adjusting area 24 of the turbidity adjusting tank 2. At the same time, the first control valve 411 is opened, and the clean water source injects clean water into the adjusting area 24 of the turbidity adjusting tank 2 to adjust the turbidity of the water.

As a specific implementation manner, in this embodiment, the clean water tank 3, the turbidity adjusting tank 2 and the three-stage sedimentation tank 1 are arranged in a straight line along the left-right direction, and the clean water tank 3 is located at the left side of the turbidity adjusting tank 2, and the three-stage sedimentation tank 1 is located at the right side of the turbidity adjusting tank 2. The first overflow port 11 is located at the rear end of the partition wall, a bottom plate 21 penetrating through the turbidity adjusting tank 2 along a transverse line is arranged in the turbidity adjusting tank 2 and located below the first overflow port 11, two ends of the bottom plate 21 are fixedly connected with the left side wall and the right side wall of the turbidity adjusting tank 2 respectively, and the rear end of the bottom plate 21 is fixedly connected with the rear side wall of the turbidity adjusting tank 2. The front end of the bottom plate 21 is provided with a first overflow wall 22 extending upwards perpendicular to the bottom plate 21, and the upper side surface of the first overflow wall 22 is positioned below the lower side surface of the first overflow port 11. The bottom plate 21, the first overflow wall 22 and the left side wall, the right side wall and the rear side wall of the turbidity control tank 2 together form the detection area 23, and water in the detection area 23 can overflow into the adjustment area 24 of the turbidity control tank 2 beyond the first overflow wall 22. The second pipe 5 extends through the left side wall of the turbidity control tank 2 into the detection zone 23 of the turbidity control tank 2.

Further, in order to improve structural strength, as shown in fig. 1, a plurality of support rib platforms 25 for supporting the bottom plate 21 are provided below the bottom plate 21. The upper end of the supporting rib table 25 is fixedly connected with the bottom plate 21, the lower end of the supporting rib table 25 is fixedly connected with the bottom surface of the turbidity adjusting tank 2, and the rear end of the supporting rib table 25 is fixedly connected with the rear side wall of the turbidity adjusting tank 2. As a specific embodiment, three support rib platforms 25 are disposed below the bottom plate 21 in this embodiment, and the three support rib platforms 25 are uniformly disposed along the left-right direction.

Further, a second turbidity detector (not shown in the figure) is disposed in the adjusting area 24 of the turbidity adjusting tank 2, a flow adjusting valve (not shown in the figure) for adjusting the flow is disposed on the first pipe 4, and the control unit can control the flow adjusting valve according to a signal fed back by the second turbidity detector to adjust the flow when the clean water is injected.

When the device works, an upper limit value and a lower limit value are set according to a turbidity standard value regulated by use requirements, and if the turbidity detected by the second turbidity detector is greater than the upper limit value, the flow of the clean water injection is increased by adjusting a flow regulating valve; if the turbidity detected by the second turbidity detector is smaller than the lower limit value, reducing the flow of the clean water injection by adjusting a flow regulating valve; if the turbidity detected by the second turbidity detector is between the upper limit value and the lower limit value, maintaining the flow of the injected clean water.

As shown in fig. 2 and 4, the first pipe 4 includes a main pipe 41, a plurality of branch pipes 42 which are communicated with the main pipe 41 are uniformly distributed on the main pipe 41 along the axial direction, and the branch pipes 42 extend to the inside of the adjusting area 24 of the turbidity adjusting tank 2 through the side wall of the turbidity adjusting tank 2. The main pipe 41 is fixedly arranged on the side wall of the turbidity adjusting tank 2 through the fixing component 6.

As a specific implementation manner, the fixing assembly 6 in this embodiment includes a supporting frame for supporting the main pipe 41, the supporting frame includes a vertical beam 611 fixedly connected with a side wall of the turbidity adjusting tank 2 by an expansion bolt, a supporting beam 612 extending outwards perpendicular to the vertical beam 611 is fixedly arranged at an upper end of the vertical beam 611 in a welding manner, a diagonal brace 613 is arranged between the supporting beam 612 and the vertical beam 611, and two ends of the diagonal brace 613 are respectively fixedly connected with the supporting beam 612 and the vertical beam 611 in a welding manner. The U-shaped bolts 62 are arranged on the joist 612, and the main pipeline 41 is fastened on the joist 612 through the U-shaped bolts 62.

Further, as shown in fig. 1 and 2, the first pipe 4 is disposed on the rear side wall of the turbidity adjusting tank 2, and the branch pipe 42 of the first pipe 4 extends to the inside of the turbidity adjusting tank 2 through the rear side wall of the turbidity adjusting tank 2. As shown in fig. 5 and 6, the branch conduit 42 is located below the detection zone 23, i.e. the branch conduit 42 is located below the bottom plate 21.

The reason for this design is that, as shown in fig. 6, since the water in the detection zone 23 is uniformly overflowed into the regulation zone 24 of the turbidity control tank 2 through the first overflow wall 22 when the turbidity detected by the first turbidity detector does not meet the use standard. By uniformly distributing branch pipes 42 for injecting clear water below the detection area 23, purified sewage and clear water can be uniformly mixed in the falling process, so that the uniformity of the turbidity of water entering the regulation area 24 is ensured, and the accuracy of the detection result of the second turbidity detector is further ensured.

Further, in order to improve the purification effect of the three-stage sedimentation tank 1, as shown in fig. 5 and 8, two opposite side walls of the three-stage sedimentation tank 1 are respectively provided with a first guide wall 13 and a second guide wall 14, the first guide wall 13 and the second guide wall 14 are arranged at intervals, the side walls of the first guide wall 13, the second guide wall 14 and the three-stage sedimentation tank 1 together form a serpentine flow channel, and water in the three-stage sedimentation tank 1 flows in a serpentine shape under the guide action of the serpentine flow channel. The first overflow port 11 is positioned at the outlet end of the serpentine flow channel, the inlet end of the serpentine flow channel is provided with the second overflow port 12, and water in the secondary sedimentation tank can overflow into the tertiary sedimentation tank 1 through the second overflow port 12.

As a specific embodiment, the first guide wall 13 is disposed on the rear side wall of the three-stage sedimentation tank 1, and the second guide wall 14 is disposed on the front side wall of the three-stage sedimentation tank 1. Illustratively, two first guide walls 13 extending inwards perpendicular to the rear side wall of the three-stage sedimentation tank 1 are disposed on the rear side wall of the three-stage sedimentation tank 1, and a second guide wall 14 extending inwards perpendicular to the front side wall of the three-stage sedimentation tank 1 is disposed between the two first guide walls 13 on the front side wall of the three-stage sedimentation tank 1.

Further, an arc-shaped guide plate is arranged on the side wall of the three-stage sedimentation tank 1 at the bending position of the serpentine flow channel.

As a specific implementation manner, in this embodiment, the front side wall of the three-stage sedimentation tank 1 is provided with arc-shaped guide plates corresponding to the first guide walls 13 one by one, and the rear side wall of the three-stage sedimentation tank 1 is provided with arc-shaped guide plates corresponding to the second guide walls 14 one by one. For convenience of description, the arc-shaped baffle corresponding to the first baffle 13 will now be defined as a first arc-shaped baffle 131, and the arc-shaped baffle corresponding to the second baffle 14 will be defined as a second arc-shaped baffle 141. The first arc-shaped guide plates 131 are symmetrically arranged about the corresponding first guide wall 13, the outer ends of the first arc-shaped guide plates 131 (the opposite sides of the two first arc-shaped guide plates 131 are taken as the inner sides) are fixedly connected with the side wall of the three-stage sedimentation tank 1, the inner ends of the first arc-shaped guide plates 131 (the opposite sides of the two first arc-shaped guide plates 131 are taken as the inner sides) are fixedly connected with the second guide wall 14, and the two ends of the first arc-shaped guide plates 131 are respectively tangent with the side wall of the three-stage sedimentation tank 1 and the second guide wall 14. The second arc-shaped guide plates 141 are symmetrically arranged about the corresponding second guide walls 14, two ends of each second arc-shaped guide plate 141 are fixedly connected with the adjacent first guide walls 13 respectively, and two ends of each second arc-shaped guide plate 141 are tangent to the adjacent first guide walls 13 respectively.

The reason of design is that through setting up the arc guide plate can reduce rivers and bend the department and produce the vortex at snakelike runner, avoids producing the disturbance to the water that flows, is favorable to guaranteeing the sedimentation purifying effect of tertiary sedimentation tank 1.

Further, as shown in fig. 7 and 8, a mud guard 15 is disposed at the bottom of the serpentine flow channel, and the mud guard 15 is perpendicular to the flow direction of the water flow. As a specific embodiment, the mud guard 15 in this embodiment is disposed at the bending position of the serpentine flow channel, and the mud guard 15 located inside the first arc-shaped baffle 131 is coplanar with the corresponding first guide wall 13, and the mud guard 15 located inside the second arc-shaped baffle 141 is coplanar with the corresponding second guide wall 14.

Through setting up fender 15, can block the silt that deposits in the water bottom at the windward side of fender 15 to avoid silt to continue to flow to the low reaches along with the water, improve the purifying effect of tertiary sedimentation tank 1, also can reduce the influence of disturbance to the water deposit purification simultaneously.

Example two

The rear end of the bottom plate 21 is not fixedly connected with the rear side wall of the turbidity adjusting tank 2, a second overflow wall extending upwards perpendicular to the bottom plate 21 is arranged at the rear end of the bottom plate 21, and the upper side surface of the second overflow wall is located below the lower side surface of the first overflow port 11. The bottom plate 21, the first overflow wall 22 and the second overflow wall form the detection area 23 together with the left side wall and the right side wall of the turbidity adjusting tank 2, and water in the detection area 23 can overflow into the adjusting area 24 of the turbidity adjusting tank 2 beyond the first overflow wall 22 and the second overflow wall.

The rest of the structure is the same as that of the first embodiment.

On the basis of the embodiments provided by the application, other embodiments obtained by combining, splitting, recombining and other means of the embodiments of the application do not exceed the protection scope of the application.

The foregoing detailed description of the embodiments of the present application has been provided for the purpose of illustrating the purposes, technical solutions and advantages of the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application, i.e., any modifications, equivalent substitutions, improvements, etc. made on the basis of the embodiments of the present application should be included in the scope of the embodiments of the present application.

Claims (9)

1. The utility model provides a concrete mixing plant sewage treatment system, includes one-level sedimentation tank, second grade sedimentation tank, tertiary sedimentation tank (1), its characterized in that: the device also comprises a turbidity adjusting tank (2) communicated with the three-stage sedimentation tank (1), wherein a first turbidity detector is arranged in the turbidity adjusting tank (2), the turbidity adjusting tank (2) is connected with a clean water source through a first pipeline (4), and a first control valve (411) is arranged on the first pipeline (4);

when the first turbidity detector detects that the turbidity does not meet the use requirement, the first control valve (411) is opened, and the clean water source injects clean water into the turbidity adjusting tank (2) so as to adjust the turbidity of the water in the turbidity adjusting tank (2);

the device comprises a turbidity adjusting tank (2), and is characterized by further comprising a clean water tank (3), wherein the inner space of the turbidity adjusting tank (2) is divided into a detection area (23) and an adjusting area (24), the detection area (23) is communicated with the clean water tank (3) through a second pipeline (5), a second control valve (51) is arranged on the second pipeline (5), the three-stage sedimentation tank (1) is communicated with the detection area (23), the first pipeline (4) is communicated with the adjusting area (24), and the first turbidity detector is arranged in the detection area (23);

if the turbidity detected by the first turbidity detector meets the use standard, the second control valve (51) is opened, the first control valve (411) is closed, and water purified by the three-stage sedimentation tank (1) flows into the clean water tank through the detection area (23);

if the turbidity detected by the first turbidity detector does not meet the use standard, the second control is closed, the first control valve (411) is opened, water purified by the three-stage sedimentation tank (1) enters the adjusting area (24) through the detection area (23), and meanwhile clear water is injected into the adjusting area (24) to adjust the turbidity of the water.

2. A concrete batching plant sewage treatment system according to claim 1, wherein: the turbidity adjusting tank (2) is internally provided with a bottom plate (21), the bottom plate (21) is provided with a first overflow wall (22), and the bottom plate (21), the first overflow wall (22) and the side wall of the turbidity adjusting tank (2) jointly form a detection area (23).

3. A concrete batching plant sewage treatment system according to claim 2, wherein: a supporting rib table (25) for supporting the bottom plate (21) is arranged below the bottom plate (21).

4. A concrete batching plant sewage treatment system according to claim 1, wherein: the turbidity control device is characterized in that a second turbidity detector is arranged in a regulating area (24) of the turbidity control tank (2), a flow regulating valve is arranged on the first pipeline (4), and the control unit can control the flow regulating valve according to signals fed back by the second turbidity detector so as to regulate the flow when the clean water is injected.

5. A concrete batching plant sewage treatment system according to claim 1, wherein: the first pipeline (4) comprises a main pipeline (41) and a plurality of branch pipelines (42), the branch pipelines (42) penetrate through the side wall of the turbidity adjusting tank (2) to extend into the turbidity adjusting tank (2), the branch pipelines (42) are located below the detection area (23), and the plurality of branch pipelines (42) are uniformly arranged along the length direction of the first overflow wall (22) of the detection area (23).

6. A concrete batching plant sewage treatment system according to claim 5, wherein: the main pipeline (41) is fixedly arranged on the side wall of the turbidity adjusting tank (2) through the fixing component (6), the fixing component (6) comprises a support frame and a U-shaped bolt (62) which are used for supporting the main pipeline (41), and the main pipeline (41) is hooped on the support frame through the U-shaped bolt (62).

7. A concrete batching plant sewage treatment system according to claim 1, wherein: the two opposite side walls of the three-stage sedimentation tank (1) are respectively provided with a first guide wall (13) and a second guide wall (14), and the side walls of the first guide wall (13), the second guide wall (14) and the three-stage sedimentation tank (1) form a serpentine flow channel together.

8. A concrete batching plant sewage treatment system according to claim 7, wherein: an arc-shaped guide plate is arranged on the side wall of the three-stage sedimentation tank (1) at the bending position of the serpentine flow channel.

9. A concrete batching plant sewage treatment system according to claim 7, wherein: the bottom of the snakelike runner is provided with a mud guard (15), and the mud guard (15) is perpendicular to the flowing direction of the water flow.