High-turbidity wastewater treatment system and method

Abstract

The invention discloses a high-turbidity wastewater treatment system and method.The treatment system comprises a water inlet pipe, a control system, a mud storage tank, a stacked screw machine, a flocculation treatment assembly and a settling pond, the water inlet pipe is connected with the settling pond through the flocculation treatment assembly, and the settling pond is connected with the inlet end of the mud storage tank through a mud pipeline; the outlet end of the mud storage tank is connected with the stacked screw machine through a mud pipeline, the stacked screw machine is connected with the sedimentation tank through a water return pipe, the mud scraper is arranged on the sedimentation tank, and the control system is electrically connected with the mud scraper, the mud storage tank, the stacked screw machine and the flocculation treatment assembly. According to the invention, automatic treatment of high-turbidity raw water is realized, automatic dehydration of sludge and circular treatment of wastewater are realized, the work of manually cleaning sludge in a traditional simple three-grid sedimentation tank is avoided, the technical problems of large workload and unstable treated water outlet are avoided, and the environment and cleanliness of a construction site are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a high-turbidity wastewater treatment system and method. Background Art

[0002] During the construction process, a large amount of high-turbidity wastewater will be generated in the process of cavern excavation, sand and gravel processing and sand washing. If it is discharged directly without treatment, it will pollute the surrounding water bodies. For high-turbidity production wastewater, the flocculation sedimentation method is currently mainly used, and it is treated in a simple three-format sedimentation tank. Due to the high mud and sand content of the wastewater, the three-format sedimentation tank needs to be manually cleaned frequently. If the cleaning is not timely, it will affect the wastewater sedimentation time and treatment effect. The treated wastewater does not meet the water quality standard requirements for reused water.

[0003] The patent document with the announcement number CN118681313A discloses a high turbidity sewage treatment process, including a primary sewage pool and a secondary sewage pool. The invention utilizes the water hammer phenomenon of water flow, spring elasticity and the alternating change of the flow direction of water flow in the elastic filter structure 1 to reduce the probability of blockage of the filter plate 1. At the same time, by setting up the secondary sewage pool and the elastic filter structure 2, the source sewage in the primary sewage pool is fully filtered, reducing the probability of blockage of the filter plates 1 and 2 during the high turbidity sewage treatment process. However, the patent does not solve the technical problem of automatically clearing the sediment of the mud storage equipment.

[0004] The patent document with announcement number CN103771604A discloses a high turbidity water treatment system, including: a regulating sedimentation tank, an intermediate water tank, a tubular membrane treatment mechanism and a clean water tank; the system can reduce the floor space of the water treatment plant and save construction investment costs. An oil scraper is set above the scraper arm of the scraper, replacing the traditional manual cleaning method of floating oil on the liquid surface, reducing labor costs; the use of tubular membrane components can stabilize the water quality of the outlet water without adding any chemicals, saving the cost of chemicals and avoiding secondary pollution of the water quality. The system mainly solves the technical problem of automated removal of floating oil, but does not solve the technical problem of automated cleaning of silt from sludge storage equipment. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a high turbidity wastewater treatment system and method.

[0006] The present invention is achieved through the following technical solutions.

[0007] The present invention provides a high-turbidity wastewater treatment system, comprising a water inlet pipe, a control system, a sludge storage tank, a snail stacker, a flocculation treatment component and a sedimentation tank, wherein the water inlet pipe is connected to the sedimentation tank through the flocculation treatment component, the sedimentation tank is connected to the inlet end of the sludge storage tank through a mud pipe, the outlet end of the sludge storage tank is connected to the snail stacker through a mud pipe, the snail stacker is connected to the sedimentation tank through a return pipe, a sludge scraper is arranged on the sedimentation tank, and the control system is electrically connected to the sludge scraper, the sludge storage tank, the snail stacker and the flocculation treatment component respectively.

[0008] Preferably, a spoiler plate is arranged in the mud storage tank, a staggered porous plate is arranged on the upper part of the spoiler plate, a spoiler plate and a filter screen are arranged on the upper part of the staggered porous plate, the bottom of the mud storage tank is connected to a mud pipe and a pier, the mud pipe is connected to the mud storage tank through a discharge valve, the mud pipe connected to the discharge valve is connected to a snail stacking machine, and a sludge pipe pump is arranged on the mud pipe connected to the snail stacking machine.

[0009] Preferably, a nozzle water supply pipe is arranged in the mud storage tank, the water outlet end of the nozzle water supply pipe is connected to the high-pressure nozzle, the nozzle water supply pipe is connected to the inner wall of the mud storage tank through a connecting piece, the water inlet end of the nozzle water supply pipe is connected to the water supply pipe, a pipeline booster pump is arranged on the water supply pipe, a ventilation pipe is arranged on the top of the mud storage tank, and a pneumatic valve is arranged on the ventilation pipe.

[0010] Preferably, the mud storage tank is provided with an overflow return pipe, an overflow pipe valve and a gate valve are provided on the overflow return pipe, and the other end of the overflow return pipe is connected to the sedimentation tank.

[0011] Preferably, the sedimentation tank includes a primary sedimentation tank, a secondary sedimentation tank and a tertiary sedimentation tank. The primary sedimentation tank is provided with a water hole at the upper part thereof to communicate with the secondary sedimentation tank. The secondary sedimentation tank is provided with a water hole at the lower part thereof to communicate with the tertiary sedimentation tank. The flocculation treatment component is arranged on the primary sedimentation tank. The scrapers are respectively arranged on the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank. The primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank are respectively connected to the inlet end of the mud storage tank through a mud pipeline.

[0012] Preferably, the flocculation treatment component includes a stirring tank, a flocculant storage tank and an agitator, the flocculant storage tank is provided with a flocculant pipeline, the flocculant pipeline is provided with a metering pump, the stirring tank is connected to the sedimentation tank through a siphon, and a turbidity meter is provided on the inner wall of the stirring tank.

[0013] Preferably, a mud collecting trough is provided at the bottom of the sedimentation tank, and the scraper includes a driving motor, a gear-type rotating shaft and a transmission track. The driving motor is connected to the gear-type rotating shaft through the driving shaft, and the gear-type rotating shaft is rotatably connected to the mud collecting trough. The mud collecting trough is connected to the inlet end of the mud storage tank through a mud pipe. An electromagnetic valve is provided on the mud pipe. Both ends of the transmission track are respectively connected to the gear-type rotating shaft, and a scraper is provided on the transmission track.

[0014] Preferably, a water collection well and a water intercepting ditch are arranged below the screw stacking machine, the water collection well and the water intercepting ditch are connected, the water collection well is connected to the sedimentation tank through a return pipe, and a pipeline pump is arranged on the return pipe.

[0015] Preferably, an ultrasonic flow meter is provided on the water inlet pipe, and the ultrasonic flow meter is connected to the control system via a data line. A recycled water pipeline is provided on the sedimentation tank, and a treated water pump is provided on the recycled water pipeline.

[0016] A method for using a high turbidity wastewater treatment system comprises the following steps:

[0017] S1: High turbidity wastewater enters the mixing tank after being measured by the water inlet pipe and ultrasonic flowmeter. The turbidity meter in the mixing tank measures the concentration of suspended solids in the raw water. The flow and turbidity data are connected to the control system through the data transmission line. The control system controls the amount of flocculant added by the metering pump.

[0018] S2: Start the agitator to stir fully, and guide the stirred wastewater to the bottom of the primary sedimentation tank through the siphon. After sedimentation, the wastewater enters the secondary sedimentation tank from the water hole at the top of the sedimentation tank. After sedimentation in the secondary sedimentation tank, the wastewater enters the tertiary sedimentation tank from the water hole at the bottom of the secondary sedimentation tank. After sedimentation, the clean water enters the reuse water pipeline from the top of the tertiary sedimentation tank and is sent to the reuse water system through the treated water pump.

[0019] S3: The sludge settled in the sedimentation tank enters the mud collecting tank at the bottom. In order to ensure that wastewater does not enter the mud storage tank, the solenoid valve at the front end of the mud storage tank is closed during the non-sludge discharge period. The solenoid valve is opened during mud discharge, and the deposited sludge is sent into the mud storage tank through the mud scraper. The excess water on the upper part of the mud storage tank enters the primary sedimentation tank through the overflow return pipe and the overflow pipe valve.

[0020] S4: When it is necessary to discharge the sludge in the sludge storage tank, close the solenoid valve, open the discharge valve, and send the sludge to the screw stacker for dehydration through the sludge pipeline pump. The wastewater generated after dehydration is collected in the collection well through the intercepting ditch and sent to the primary sedimentation tank through the pipeline pump and the return pipe.

[0021] The beneficial effects of the present invention are:

[0022] The present invention monitors water quality through a turbidity meter, automatically controls the dosage through a control system, ensures coagulation effect through mechanical stirring, utilizes a siphon and a three-stage sedimentation tank to precipitate and remove suspended matter, a mud storage tank and a crawler-type mud scraper are arranged at the bottom, sludge is regularly discharged into the storage tank pipe, the mud pipeline is sent to a screw stacking machine for dehydration, and then transported to a waste dump, and waste water generated during the operation is sent to a primary sedimentation tank for treatment through a pump and a pipeline, thereby realizing automatic operation and ensuring the effluent water quality.

[0023] The present invention not only realizes the automatic treatment of high-turbidity raw water, but also realizes the automatic dehydration of sludge and the recycling treatment of wastewater, avoids the work of manual sludge cleaning in the traditional simple three-chamber sedimentation tank, avoids the technical problems of large workload and unstable treated water output, and greatly improves the environment and cleanliness of the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 is a cross-sectional view taken along line AA of the present invention;

[0026] Figure 3 is a BB cross-sectional view of the present invention;

[0027] Figure 4 is a CC cross-sectional view of the present invention;

[0028] Figure 5 is a DD cross-sectional view of the present invention;

[0029] Figure 6 is a cross-sectional view of EE of the present invention;

[0030] In the figure: 1-water inlet pipe, 2-ultrasonic flowmeter, 3-data line, 4-control system, 5-turbidity meter, 6-flocculant storage tank, 601-mixing tank, 7-metering pump, 8-flocculant pipeline, 9-mixer, 10-siphon, 11-scraper, 12-water hole, 13-drive motor, 14-drive shaft, 15-solenoid valve, 16-sludge storage tank, 17-overflow pipe valve, 18-overflow return pipe, 19-gate valve, 20-sludge pipeline pump, 21-pipeline pump, 22-screw stacking machine, 23-water collection well, 24 - intercepting ditch, 25-treatment water pump, 26-recycled water pipeline, 27-mud pipeline, 28-return pipe, 29-filter screen, 30-pneumatic valve, 31-ventilation pipe, 32-spoiler, 33-offset porous plate, 34-water supply pipe, 35-pipeline booster pump, 36-sprinkler water supply pipe, 37-high-pressure nozzle, 38-discharge valve, 39-pier, 40-connecting piece, 41-gear-type rotating shaft, 42-scraper, 43-drive crawler, 44-primary sedimentation tank, 45-secondary sedimentation tank, 46-tertiary sedimentation tank. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0032] Example:

[0033] like Figures 1 to 6As shown, a high turbidity wastewater treatment system includes a water inlet pipe 1, a control system 4, a sludge storage tank 16, a snail stacker 22, a flocculation treatment component and a sedimentation tank, wherein the water inlet pipe 1 is connected to the sedimentation tank through the flocculation treatment component, the sedimentation tank is connected to the inlet end of the sludge storage tank 16 through a mud pipe 27, the outlet end of the sludge storage tank 16 is connected to the snail stacker 22 through the mud pipe 27, the snail stacker 22 is connected to the sedimentation tank through a return pipe 28, a scraper 11 is arranged on the sedimentation tank, the control system 4 is electrically connected to the scraper 11, the sludge storage tank 16, the snail stacker 22 and the flocculation treatment component, and controls the above-mentioned connected devices, the control system 4 is a PLC control system, the electrical connection method and the control system design are prior art, and this application will not repeat them.

[0034] Two or more layers of spoiler plates 32 are arranged on the upper part of the mud storage tank 16, and a staggered porous plate 33 is arranged on the upper part of the spoiler plate 32. Two or more layers of spoiler plates 32 and a filter screen 29 are arranged on the upper part of the staggered porous plate 33 from bottom to top. The filter screen 29 is made of nylon. The bottom of the mud storage tank 16 is connected to a mud pipe 27 and a pier 39. The mud pipe 27 is connected to the mud storage tank 16 through a discharge valve 38. The outlet end of the mud pipe 27 connected to the discharge valve 38 is connected to a snail stacking machine 22. A sludge pipe pump 20 is arranged on the mud pipe 27 connected to the snail stacking machine 22. Three mud storage tanks 16 are arranged, and the three mud storage tanks 16 are respectively connected to the snail stacking machine 22 through mud pipes 27.

[0035] A nozzle water supply pipe 36 is arranged in the mud storage tank 16, and the water outlet end of the nozzle water supply pipe 36 is connected to the high-pressure nozzle 37. The nozzle water supply pipe 36 is welded to the inner wall of the mud storage tank 16 through a connecting piece 40, and the water inlet end of the nozzle water supply pipe 36 is connected to the water supply pipe 34. A pipeline booster pump 35 is arranged on the water supply pipe 34. The nozzle water supply pipe 36 can be arranged below the lowest spoiler plate 32. The nozzle water supply pipe 36 is annular, and a plurality of high-pressure nozzles 37 are evenly distributed on the nozzle water supply pipe 36. The high-pressure nozzle 37 is inclined relative to the inner wall of the mud storage tank 16 to ensure the flushing effect on the inner wall of the mud storage tank 16. A ventilation pipe 31 is arranged on the top of the mud storage tank 16, and a pneumatic valve 30 is arranged on the ventilation pipe 31.

[0036] When the sludge pipeline pump 20 sucks the sludge in the sludge storage tank 16, air is added to the sludge storage tank 16 through the ventilation pipe 31 and the pneumatic valve 30 to prevent the formation of vacuum or negative pressure, thereby avoiding damaging effects on the sludge storage tank 16; the scrapers and sludge storage tanks 16 of the primary sedimentation tank 44, the secondary sedimentation tank 45 and the tertiary sedimentation tank 46 are disconnected and controlled by valves 15 to avoid disturbances between multiple sludge storage tanks 16 when the pipeline pump 20 sucks the sludge.

[0037] In order to regularly clean the mud storage tank 16, a pipeline booster pump 35 and a nozzle water supply pipe 36 are provided. The annular nozzle water supply pipe 36 is provided with oblique high-pressure nozzles 37 at a certain interval. The pipeline booster pump 35 is externally connected to a water supply pipe, and the mud storage tank 16 can be regularly cleaned to prevent sludge deposition and blockage from affecting the function of the mud storage tank 16.

[0038] The mud storage tank 16 is provided with an overflow return pipe 18, and the overflow return pipe 18 is provided with an overflow pipe valve 17 and a gate valve 19. The other end of the overflow return pipe 18 is connected to the primary sedimentation tank 44 of the sedimentation tank. The overflow pipe valve 17 is arranged at one end of the overflow return pipe 18 close to the mud storage tank 16. The overflow pipe valve 17 is arranged corresponding to the number of mud storage tanks 16. The overflow return pipe 18 connects three mud storage tanks 16, and the gate valve 19 is arranged at one end of the overflow return pipe 18 close to the primary sedimentation tank 44.

[0039] The sedimentation tank includes a primary sedimentation tank 44, a secondary sedimentation tank 45 and a tertiary sedimentation tank 46. The primary sedimentation tank 44 is provided with a water hole 12 at the upper part to communicate with the secondary sedimentation tank 45. The secondary sedimentation tank 45 is provided with a water hole 12 at the lower part to communicate with the tertiary sedimentation tank 46. The flocculation treatment component is arranged on the primary sedimentation tank 44. The scraper 11 is respectively arranged on the primary sedimentation tank 44, the secondary sedimentation tank 45 and the tertiary sedimentation tank 46. The primary sedimentation tank 44, the secondary sedimentation tank 45 and the tertiary sedimentation tank 46 are respectively connected to the inlet end of a separate mud storage tank 16 through a mud pipeline 27.

[0040] The flocculation treatment component includes a stirring tank 601, a flocculant storage tank 6 and an agitator 9. The flocculant storage tank 6 is provided with a flocculant pipeline 8, and a metering pump 7 is provided on the flocculant pipeline 8. The flocculant in the flocculant storage tank 6 is controlled by the metering pump 7 and discharged into the stirring tank 601 through the flocculant pipeline 8. The agitator 9 includes a motor, a rotating shaft and blades. The motor is connected to the blades through the rotating shaft. The blades rotate to stir the liquid in the stirring tank 601 so that the flocculant is evenly mixed. The stirring tank 601 is connected to the primary sedimentation tank 44 in the sedimentation tank through a siphon 10. The stirring tank 601 is arranged on one side of the primary sedimentation tank 44. A turbidity meter 5 is arranged on the inner wall of the stirring tank 601. The water inlet end of the siphon 10 is located at the upper part of the stirring tank 601, and the water outlet end of the siphon 10 is located at the lower part of the primary sedimentation tank 44.

[0041] A mud collecting trough is arranged at the bottom of the sedimentation tank, and the scraper 11 includes a driving motor 13, a gear-type rotating shaft 41 and a transmission crawler 43. Two gear-type rotating shafts 41 are arranged, and the driving motor 13 is connected to one gear-type rotating shaft 41 through a driving shaft 14, and the other gear-type rotating shaft 41 is in a driven relationship. The two gear-type rotating shafts 41 are rotationally connected to the mud collecting trough, and the mud collecting trough is connected to the inlet end of the mud storage tank 16 through a mud pipeline 27. A solenoid valve 15 is arranged on the mud pipeline 27. Both ends of the transmission crawler 43 are respectively connected to the gear-type rotating shaft 41, and a scraper 42 is arranged on the transmission crawler 43. The driving motor 13 drives the gear-type rotating shaft 41 to rotate, and the gear-type rotating shaft 41 drives the transmission crawler 43 to rotate, so that the scraper 42 on the transmission crawler 43 scrapes the sludge out of the mud collecting trough and enters the mud pipeline 27.

[0042] A water collecting well 23 and a water intercepting ditch 24 are arranged below the screw stacking machine 22 . The water collecting well 23 and the water intercepting ditch 24 are connected. The water collecting well 23 is connected to the primary sedimentation tank 44 of the sedimentation tank through a return pipe 28 . A pipeline pump 21 is arranged on the return pipe 28 .

[0043] An ultrasonic flowmeter 2 is provided on the water inlet pipe 1 , and the ultrasonic flowmeter 2 is connected to a control system 4 via a data line 3 . A recycled water pipeline 26 is provided on the water outlet of the tertiary sedimentation tank 46 of the sedimentation tank, and a treated water pump 25 is provided on the recycled water pipeline 26 .

[0044] A method for using a high turbidity wastewater treatment system comprises the following steps:

[0045] S1: High turbidity wastewater enters the stirring tank 601 after being measured by the water inlet pipe 1 and the ultrasonic flowmeter 2. The turbidity meter 5 in the stirring tank 601 measures the concentration of suspended solids (SS) in the raw water. The flow and turbidity data are connected to the control system 4 through the data transmission line 3. The control system 4 controls the amount of flocculant added by the metering pump 7, accurately adds flocculant and ensures the flocculation effect, reduces labor intensity and saves the consumption rate of reagents.

[0046] S2: Start the stirrer 9. Driven by the motor, the stirrer 9 stirs fully to ensure that the flocculant and the raw water are fully mixed. The evenly stirred wastewater is introduced into the bottom of the primary sedimentation tank 44 through the siphon 10. After sedimentation and retention for 20 minutes, the wastewater enters the secondary sedimentation tank 45 from the water hole 12 at the top of the sedimentation tank 44. After sedimentation and retention for 20 minutes in the secondary sedimentation tank 45, the wastewater enters the tertiary sedimentation tank 46 from the water hole 12 at the bottom of the secondary sedimentation tank 45. After sedimentation, the clean water enters the reuse water pipeline 26 from the top of the tertiary sedimentation tank 46, and is sent to the reuse water system through the treated water pump 25 to achieve recycling or external discharge.

[0047] S3: The sludge settled in the sedimentation tank enters the inclined mud collecting tank at the bottom. In order to ensure that wastewater does not enter the mud storage tank 16, the solenoid valve 15 at the front end of the mud storage tank 16 is closed during the non-sludge discharge period. When the mud is discharged, the solenoid valve 15 is opened, and the deposited sludge is sent into the mud storage tank 16 through the mud scraper 11. The excess water on the upper part of the mud storage tank 16 enters the primary sedimentation tank 44 through the overflow return pipe 18 and the overflow pipe valve 17.

[0048] S4: When it is necessary to discharge the sludge in the sludge storage tank 16, close the solenoid valve 15, open the discharge valve 38, and send the sludge to the screw stacking machine 22 for dehydration through the sludge pipeline pump 20. The dehydrated sludge is discharged into the waste dump. The wastewater generated after dehydration is collected into the collection well 23 through the intercepting ditch 24, and sent to the primary sedimentation tank 44 through the pipeline pump 21 and the return pipe 28.

Claims

1. A high turbidity wastewater treatment system, characterized in that: The invention comprises a water inlet pipe (1), a control system (4), a mud storage tank (16), a snail stacking machine (22), a flocculation treatment component and a sedimentation tank, wherein the water inlet pipe (1) is connected to the sedimentation tank via the flocculation treatment component, the sedimentation tank is connected to the inlet end of the mud storage tank (16) via a mud pipeline (27), the outlet end of the mud storage tank (16) is connected to the snail stacking machine (22) via the mud pipeline (27), the snail stacking machine (22) is connected to the sedimentation tank via a return pipe (28), a mud scraper (11) is arranged on the sedimentation tank, and the control system (4) is electrically connected to the mud scraper (11), the mud storage tank (16), the snail stacking machine (22) and the flocculation treatment component respectively.

2. A high turbidity wastewater treatment system as claimed in claim 1, characterized in that: A spoiler plate (32) is arranged in the mud storage tank (16), a displaced porous plate (33) is arranged on the top of the spoiler plate (32), and a spoiler plate (32) and a filter screen (29) are arranged on the top of the displaced porous plate (33). The bottom of the mud storage tank (16) is connected to a mud pipeline (27) and a buttress (39), the mud pipeline (27) is connected to the mud storage tank (16) through a discharge valve (38), the mud pipeline (27) connected to the discharge valve (38) is connected to a screw stacking machine (22), and a sludge pipeline pump (20) is arranged on the mud pipeline (27) connected to the screw stacking machine (22).

3. A high turbidity wastewater treatment system as claimed in claim 1, characterized in that: A nozzle water supply pipe (36) is arranged in the mud storage tank (16); a water outlet end of the nozzle water supply pipe (36) is connected to a high-pressure nozzle (37); the nozzle water supply pipe (36) is connected to the inner wall of the mud storage tank (16) via a connecting piece (40); a water inlet end of the nozzle water supply pipe (36) is connected to a water supply pipe (34); a pipeline booster pump (35) is arranged on the water supply pipe (34); a vent pipe (31) is arranged on the top of the mud storage tank (16); and a pneumatic valve (30) is arranged on the vent pipe (31).

4. A high turbidity wastewater treatment system as claimed in claim 1, characterized in that: The mud storage tank (16) is provided with an overflow return pipe (18), an overflow pipe valve (17) and a gate valve (19) are provided on the overflow return pipe (18), and the other end of the overflow return pipe (18) is connected to the sedimentation tank.

5. A high turbidity wastewater treatment system as claimed in claim 1, characterized in that: The sedimentation tank comprises a primary sedimentation tank (44), a secondary sedimentation tank (45) and a tertiary sedimentation tank (46); a water hole (12) is arranged at the upper part of the primary sedimentation tank (44) to communicate with the secondary sedimentation tank (45); a water hole (12) is arranged at the lower part of the secondary sedimentation tank (45) to communicate with the tertiary sedimentation tank (46); the flocculation treatment component is arranged on the primary sedimentation tank (44); the mud scraper (11) is arranged on the primary sedimentation tank (44), the secondary sedimentation tank (45) and the tertiary sedimentation tank (46) respectively; the primary sedimentation tank (44), the secondary sedimentation tank (45) and the tertiary sedimentation tank (46) are respectively connected to the inlet end of the mud storage tank (16) through a mud pipeline (27).

6. A high turbidity wastewater treatment system as claimed in claim 1, characterized in that: The flocculation treatment component comprises a stirring tank (601), a flocculant storage tank (6) and an agitator (9); a flocculant pipeline (8) is arranged on the flocculant storage tank (6); a metering pump (7) is arranged on the flocculant pipeline (8); the stirring tank (601) is connected to a sedimentation tank via a siphon (10); and a turbidity meter (5) is arranged on the inner wall of the stirring tank (601).

7. A high turbidity wastewater treatment system as claimed in claim 1, characterized in that: A mud collecting trough is arranged at the bottom of the sedimentation tank. The mud scraper (11) comprises a driving motor (13), a gear-type rotating shaft (41) and a driving crawler (43). The driving motor (13) is connected to the gear-type rotating shaft (41) via a driving shaft (14). The gear-type rotating shaft (41) is rotatably connected to the mud collecting trough. The mud collecting trough is connected to the inlet end of the mud storage tank (16) via a mud pipeline (27). A solenoid valve (15) is arranged on the mud pipeline (27). Both ends of the driving crawler (43) are respectively connected to the gear-type rotating shaft (41). A scraper (42) is arranged on the driving crawler (43).

8. A high turbidity wastewater treatment system as claimed in claim 1, characterized in that: A water collection well (23) and a water intercepting ditch (24) are arranged below the screw stacking machine (22); the water collection well (23) and the water intercepting ditch (24) are connected; the water collection well (23) is connected to the sedimentation tank via a return pipe (28); and a pipeline pump (21) is arranged on the return pipe (28).

9. A high turbidity wastewater treatment system as claimed in claim 1, characterized in that: An ultrasonic flow meter (2) is arranged on the water inlet pipe (1), and the ultrasonic flow meter (2) is connected to a control system (4) via a data line (3). A recycled water pipeline (26) is arranged on the sedimentation tank, and a treated water pump (25) is arranged on the recycled water pipeline (26).

10. A method for using the high turbidity wastewater treatment system according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: High turbidity wastewater enters the stirring tank (601) after being measured by the water inlet pipe (1) and the ultrasonic flowmeter (2). The turbidity meter (5) in the stirring tank (601) measures the concentration of suspended solids in the raw water. The flow rate and turbidity data are connected to the control system (4) via the data transmission line (3). The control system (4) controls the amount of flocculant added by the metering pump (7); S2: Start the agitator (9) to stir the wastewater sufficiently, and guide the stirred wastewater to the bottom of the primary sedimentation tank (44) through the siphon (10). After sedimentation, the wastewater enters the secondary sedimentation tank (45) from the water hole (12) at the top of the sedimentation tank (44). After sedimentation in the secondary sedimentation tank (45), the wastewater enters the tertiary sedimentation tank (46) from the water hole (12) at the bottom of the secondary sedimentation tank (45). After sedimentation, the clean water enters the reuse water pipeline (26) from the top of the tertiary sedimentation tank (46), and is sent to the reuse water system through the treatment water pump (25); S3: The sludge settled in the sedimentation tank enters the sludge collecting tank at the bottom. In order to ensure that wastewater does not enter the sludge storage tank (16), the solenoid valve (15) at the front end of the sludge storage tank (16) is in a closed state during the non-sludge discharge period. When the sludge is discharged, the solenoid valve (15) is opened, and the deposited sludge is sent into the sludge storage tank (16) through the sludge scraper (11). The excess water in the upper part of the sludge storage tank (16) enters the primary sedimentation tank (44) through the overflow return pipe (18) and the overflow pipe valve (17); S4: When it is necessary to discharge the sludge in the sludge storage tank (16), the solenoid valve (15) is closed, the discharge valve (38) is opened, and the sludge is sent to the screw stacking machine (22) for dehydration through the sludge pipeline pump (20). The wastewater generated after the dehydration is collected in the water collection well (23) through the intercepting ditch (24), and sent to the primary sedimentation tank (44) through the pipeline pump (21) and the return pipe (28).

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