A high turbidity wastewater treatment system and method

Abstract

The application discloses a high-turbidity wastewater treatment system and method, and relates to the field of wastewater treatment.The treatment system comprises a water inlet pipe, a control system, a sludge storage tank, a spiral machine, a flocculation treatment assembly and a sedimentation tank, the water inlet pipe is connected with the sedimentation tank through the flocculation treatment assembly, the sedimentation tank is connected with the inlet end of the sludge storage tank through a sludge pipeline, the outlet end of the sludge storage tank is connected with the spiral machine through a sludge pipeline, the spiral machine is connected with the sedimentation tank through a backwater pipe, a sludge scraper is arranged on the sedimentation tank, and the control system is electrically connected with the sludge scraper, the sludge storage tank, the spiral machine and the flocculation treatment assembly.The application not only realizes automatic treatment of high-turbidity raw water, but also realizes automatic dehydration of sludge and recycling treatment of wastewater, avoids manual sludge dredging work of a traditional simple three-format sedimentation tank, avoids technical problems of heavy workload and unstable water treatment, and greatly improves the environment and cleanness of a construction site.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of sewage treatment, and particularly relates to a high-turbidity wastewater treatment system and method. BACKGROUND

[0002] In the process of engineering construction, a large amount of high-turbidity wastewater is generated in the process of tunnel excavation and sandstone processing and washing, and if the wastewater is directly discharged without treatment, it will pollute the surrounding water. At present, the flocculation sedimentation method is mainly used for treating high-turbidity production wastewater, and a simple three-format sedimentation tank is used for treatment. However, due to the high content of wastewater sand, 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, and the treated wastewater cannot meet the water quality standard requirements for recycled water.

[0003] The patent document with publication number CN118681313A discloses a high-turbidity sewage treatment process, which includes a primary sewage tank and a secondary sewage tank. The invention utilizes the water hammer phenomenon of water flow, spring elasticity, and the alternating change of the flow direction of the water flow in the elastic filter structure one, reduces the probability of blockage of the filter plate one, and at the same time, through the setting of the secondary sewage tank and the elastic filter structure two, the source sewage in the primary sewage tank is fully filtered, reducing the probability of blockage of the filter plate one and the filter plate two in the process of high-turbidity sewage treatment. However, the patent does not solve the technical problem of automatic cleaning of the mud storage equipment.

[0004] The patent document with publication number CN103771604A discloses a high-turbidity water treatment system, which includes a regulating sedimentation tank, an intermediate water tank, a tubular membrane treatment mechanism, and a clean water tank. The system can reduce the land occupation area of the water treatment plant and save construction investment costs. An oil scraping plate is arranged above the mud scraping arm of the mud scraper, replacing the traditional manual cleaning of floating oil on the liquid surface, reducing the labor cost; the use of tubular membrane components can stabilize the water quality, without the need to add any reagents, saving reagent costs while avoiding secondary pollution to the water quality. The system mainly solves the technical problem of automatic removal of floating oil, but does not solve the technical problem of automatic cleaning of the mud storage equipment. SUMMARY

[0005] To solve the above technical problems, the present application provides a high-turbidity wastewater treatment system and method.

[0006] The present application is achieved by the following technical solutions.

[0007] The application provides a high turbidity wastewater treatment system, which comprises a water inlet pipe, a control system, a sludge storage tank, a spiral machine, a flocculation treatment assembly and a sedimentation tank, the water inlet pipe is connected with the sedimentation tank through the flocculation treatment assembly, the sedimentation tank is connected with the inlet end of the sludge storage tank through a sludge pipeline, the outlet end of the sludge storage tank is connected with the spiral machine through a sludge pipeline, the spiral machine is connected with the sedimentation tank through a backwater pipe, a sludge scraper is arranged on the sedimentation tank, and the control system is electrically connected with the sludge scraper, the sludge storage tank, the spiral machine and the flocculation treatment assembly respectively.

[0008] Preferably, a spoiler-preventing plate is arranged in the sludge storage tank, a staggered multi-hole plate is arranged on the upper portion of the spoiler-preventing plate, a spoiler-preventing plate and a filter screen are arranged on the upper portion of the staggered multi-hole plate, a sludge pipeline and a buttress are connected with the bottom of the sludge storage tank, the sludge pipeline is connected with the sludge storage tank through a blow-off valve, the sludge pipeline connected with the blow-off valve is connected with the spiral machine, and a sludge pipeline pump is arranged on the sludge pipeline connected with the spiral machine.

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

[0010] Preferably, the sludge storage tank is connected with an overflow backwater pipe, an overflow pipe valve and a gate valve are arranged on the overflow backwater pipe, and the other end of the overflow backwater pipe is connected with the sedimentation tank.

[0011] Preferably, the sedimentation tank comprises a first-stage sedimentation tank, a second-stage sedimentation tank and a third-stage sedimentation tank, a water passing hole is arranged on the upper portion of the first-stage sedimentation tank and communicates with the second-stage sedimentation tank, a water passing hole is arranged on the lower portion of the second-stage sedimentation tank and communicates with the third-stage sedimentation tank, the flocculation treatment assembly is arranged on the first-stage sedimentation tank, the sludge scrapers are arranged on the first-stage sedimentation tank, the second-stage sedimentation tank and the third-stage sedimentation tank respectively, and the first-stage sedimentation tank, the second-stage sedimentation tank and the third-stage sedimentation tank are connected with the inlet end of the sludge storage tank through sludge pipelines respectively.

[0012] Preferably, the flocculation treatment assembly comprises a stirring tank, a flocculant storage box and a stirrer, a flocculant pipeline is arranged on the flocculant storage box, a metering pump is arranged on the flocculant pipeline, the stirring tank is connected with the sedimentation tank through a siphon pipe, and a turbidimeter is arranged on the inner wall of the stirring tank.

[0013] Preferably, a sludge collecting groove is arranged on the bottom of the sedimentation tank, the sludge scraper comprises a driving motor, a gear type rotating shaft and a transmission crawler belt, the driving motor is connected with the gear type rotating shaft through a driving shaft, the gear type rotating shaft is rotationally connected with the sludge collecting groove, the sludge collecting groove is connected with the inlet end of the sludge storage tank through a sludge pipeline, an electromagnetic valve is arranged on the sludge pipeline, the transmission crawler belt is connected with the gear type rotating shaft at two ends respectively, and a scraper blade is arranged on the transmission crawler belt.

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

[0015] Preferably, an ultrasonic flowmeter is arranged on the water inlet pipe, the ultrasonic flowmeter is connected with the control system through a data line, a recycled water pipeline is arranged on the sedimentation tank, and a treated water pump is arranged on the recycled water pipeline.

[0016] A use method of a high-turbidity wastewater treatment system, comprising the following steps:

[0017] S1: high-turbidity wastewater enters a stirring tank after being measured by a water inlet pipe and an ultrasonic flowmeter, the turbidity of the raw water is measured by a turbidimeter in the stirring tank, flow and turbidity data are connected to a control system through a data line, and the addition amount of a flocculating agent of a metering pump is controlled by the control system,

[0018] S2: a stirrer is started to fully stir, the uniformly stirred wastewater is guided into the bottom of a primary sedimentation tank through a siphon pipe, after sedimentation, the wastewater enters a secondary sedimentation tank from a water hole at the upper portion of the primary sedimentation tank, after sedimentation in the secondary sedimentation tank, the wastewater enters a tertiary sedimentation tank from a water hole at the bottom of the secondary sedimentation tank, after sedimentation, the clear water enters a recycled water pipeline from the upper portion of the tertiary sedimentation tank, and the treated water is sent into a recycled water system by a treated water pump,

[0019] S3: the sludge in the sedimentation tank enters a sludge collecting groove at the bottom, in order to prevent wastewater from entering a sludge storage tank, an electromagnetic valve at the front end of the sludge storage tank is in a closed state during a non-sludge discharge period, the electromagnetic valve is opened during sludge discharge, the deposited sludge is sent into the sludge storage tank by a sludge scraper, and excess water at the upper portion of the sludge storage tank enters the primary sedimentation tank through an overflow backwater pipe and an overflow valve,

[0020] S4: when the sludge in the sludge storage tank needs to be discharged, the electromagnetic valve is closed, a discharge valve is opened, the sludge is sent into a stacking screw machine by a sludge pipeline pump for dewatering treatment, and the wastewater generated after the dewatering treatment is collected into a water collecting well through a water intercepting ditch, and is sent into the primary sedimentation tank through a pipeline pump and a backwater pipe.

[0021] The present application has the following beneficial effects:

[0022] The present application monitors water quality by a turbidimeter, automatically controls the addition amount by a control system, ensures the coagulation effect by mechanical stirring, removes suspended solids by using a siphon pipe and three-stage sedimentation tanks, sets a sludge storage tank and a crawler-type sludge scraper at the bottom, regularly discharges sludge into a sludge tank pipeline, sends the slurry pipeline to a stacking screw machine for dewatering, and then transports the dewatered sludge to a sludge disposal site, and the wastewater generated during operation is sent into a primary sedimentation tank through a pump and a pipeline for treatment, so that automatic operation is realized and the water quality is ensured.

[0023] The present application not only realizes automatic treatment of high turbidity raw water, but also realizes automatic dewatering of sludge and recycling treatment of waste water, avoids manual sludge cleaning work of traditional simple three-format sedimentation tank, avoids technical problems of heavy workload and unstable treatment water effluent, and greatly improves the environment and neatness of the construction site. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a structural schematic diagram of the present application;

[0025] Fig. 2 is an A-A cross-sectional view of the present application;

[0026] Fig. 3 is a B-B cross-sectional view of the present application;

[0027] Fig. 4 is a C-C cross-sectional view of the present application;

[0028] Fig. 5 is a D-D cross-sectional view of the present application;

[0029] Fig. 6 is an E-E cross-sectional view of the present application;

[0030] In the figure: 1 - water inlet pipe, 2 - ultrasonic flow meter, 3 - data line, 4 - control system, 5 - turbidity meter, 6 - flocculant storage tank, 601 - stirring tank, 7 - metering pump, 8 - flocculant pipeline, 9 - stirrer, 10 - siphon pipe, 11 - mud scraper, 12 - water passage, 13 - drive motor, 14 - drive shaft, 15 - electromagnetic valve, 16 - sludge storage tank, 17 - overflow pipe valve, 18 - overflow return water pipe, 19 - gate valve, 20 - sludge pipeline pump, 21 - pipeline pump, 22 - spiral machine, 23 - water collecting well, 24 - water cutting ditch, 25 - treated water pump, 26 - recycled water pipeline, 27 - slurry pipeline, 28 - return water pipe, 29 - filter screen, 30 - pneumatic valve, 31 - air pipe, 32 - anti-disturbance plate, 33 - staggered multi-hole plate, 34 - water supply pipe, 35 - pipeline booster pump, 36 - nozzle water supply pipe, 37 - high-pressure nozzle, 38 - relief valve, 39 - pier, 40 - connecting piece, 41 - gear type rotating shaft, 42 - scraper, 43 - transmission track, 44 - primary sedimentation tank, 45 - secondary sedimentation tank, 46 - tertiary sedimentation tank. DETAILED DESCRIPTION

[0031] The technical solutions of the present application are further described below, but the scope of protection is not limited to the description.

[0032] Embodiment:

[0033] As Figs. 1 to 6As shown, a high turbidity wastewater treatment system comprises a water inlet pipe 1, a control system 4, a sludge storage tank 16, a spiral machine 22, a flocculation treatment assembly and a sedimentation tank, the water inlet pipe 1 is connected with the sedimentation tank through the flocculation treatment assembly, the sedimentation tank is connected with the inlet end of the sludge storage tank 16 through a sludge pipeline 27, the outlet end of the sludge storage tank 16 is connected with the spiral machine 22 through the sludge pipeline 27, the spiral machine 22 is connected with the sedimentation tank through a backwater pipe 28, a sludge scraper 11 is arranged on the sedimentation tank, the control system 4 is electrically connected with the sludge scraper 11, the sludge storage tank 16, the spiral machine 22 and the flocculation treatment assembly respectively, and controls the above-mentioned connected devices, the control system 4 is a PLC control system, the electric connection mode and the control system design are prior art, and will not be described here.

[0034] Two or more layers of anti-turbulence plates 32 are arranged in the upper part of the sludge storage tank 16, a staggered perforated plate 33 is arranged on the upper part of the anti-turbulence plate 32, two or more layers of anti-turbulence plates 32 and a filter screen 29 are sequentially arranged from bottom to top on the upper part of the staggered perforated plate 33, the material of the filter screen 29 is nylon, the sludge pipeline 27 and a supporting pier 39 are connected with the bottom of the sludge storage tank 16, the sludge pipeline 27 is connected with the sludge storage tank 16 through a blow-off valve 38, the outlet end of the sludge pipeline 27 connected with the blow-off valve 38 is connected with the spiral machine 22, a sludge pipeline pump 20 is arranged on the sludge pipeline 27 connected with the spiral machine 22, three sludge storage tanks 16 are arranged, and the three sludge storage tanks 16 are connected with the spiral machine 22 through the sludge pipelines 27 respectively.

[0035] A water supply pipe 36 for a spray head is arranged in the sludge storage tank 16, the outlet end of the water supply pipe 36 for the spray head is connected with a high-pressure spray head 37, the water supply pipe 36 for the spray head is welded with the inner wall of the sludge storage tank 16 through a connecting piece 40, the inlet end of the water supply pipe 36 for the spray head is connected with a water supply pipe 34, a pipeline pressurizing pump 35 is arranged on the water supply pipe 34, the water supply pipe 36 for the spray head can be arranged below the lowest anti-turbulence plate 32, the water supply pipe 36 for the spray head is annular, a plurality of high-pressure spray heads 37 are uniformly distributed and arranged on the water supply pipe 36 for the spray head in a circle, the high-pressure spray heads 37 are arranged obliquely relative to the inner wall of the sludge storage tank 16, so as to ensure the flushing effect on the inner wall of the sludge storage tank 16, an air pipe 31 is arranged on the top of the sludge storage tank 16, and a pneumatic valve 30 is arranged on the air pipe 31.

[0036] When the sludge pipeline pump 20 sucks the sludge in the sludge storage tank 16, air is supplied to the sludge storage tank 16 through the air pipe 31 and the pneumatic valve 30, so as to prevent the formation of vacuum or negative pressure and avoid damage to the sludge storage tank 16; the sludge scrapers of the primary sedimentation tank 44, the secondary sedimentation tank 45 and the tertiary sedimentation tank 46 are disconnected and controlled with the sludge storage tank 16 through a valve 15, so as to avoid disturbance between the multiple sludge storage tanks 16 when the sludge pipeline pump 20 sucks the sludge.

[0037] To clean the sludge storage tank 16 regularly, a pipeline pressure pump 35 and a nozzle water supply pipe 36 are installed. The annular nozzle water supply pipe 36 is equipped with oblique high-pressure nozzles 37 at certain intervals. The pipeline pressure pump 35 is connected to an external water supply pipe, which can clean the sludge storage tank 16 regularly to avoid sludge accumulation and blockage that affects the function of the sludge storage tank 16.

[0038] The sludge storage tank 16 is connected to the overflow return water pipe 18. The overflow return water pipe 18 is equipped with an overflow pipe valve 17 and a gate valve 19. The other end of the overflow return water pipe 18 is connected to the primary sedimentation tank 44 of the sedimentation tank. The overflow pipe valve 17 is located at the end of the overflow return water pipe 18 near the sludge storage tank 16. The overflow pipe valve 17 is set according to the number of sludge storage tanks 16. The overflow return water pipe 18 connects to three sludge storage tanks 16. The gate valve 19 is located at the end of the overflow return water pipe 18 near 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 upper part of the primary sedimentation tank 44 is provided with a water passage hole 12, which communicates with the secondary sedimentation tank 45. The lower part of the secondary sedimentation tank 45 is provided with a water passage hole 12, which communicates with the tertiary sedimentation tank 46. The flocculation treatment component is installed on the primary sedimentation tank 44. The sludge scraper 11 is installed 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 a separate sludge storage tank 16 through a sludge pipe 27.

[0040] The flocculation treatment assembly includes a mixing tank 601, a flocculant storage tank 6, and a stirrer 9. A flocculant pipe 8 is installed on the flocculant storage tank 6, and a metering pump 7 is installed on the flocculant pipe 8. The flocculant in the flocculant storage tank 6 is controlled by the metering pump 7 and discharged into the mixing tank 601 through the flocculant pipe 8. The stirrer 9 includes a motor, a rotating shaft, and blades. The motor is connected to the blades via the rotating shaft. The blades rotate and stir the liquid in the mixing tank 601, ensuring uniform mixing of the flocculant. The mixing tank 601 is connected to a primary sedimentation tank 44 in the sedimentation tank via a siphon pipe 10. The mixing tank 601 is located on one side of the primary sedimentation tank 44. A turbidity meter 5 is installed on the inner wall of the mixing tank 601. The inlet end of the siphon pipe 10 is located at the upper part of the mixing tank 601, and the outlet end of the siphon pipe 10 is located at the lower part of the primary sedimentation tank 44.

[0041] The sedimentation tank is equipped with a sludge collection trough at the bottom. The sludge scraper 11 includes a drive motor 13, a gear-type rotating shaft 41, and a transmission track 43. Two gear-type rotating shafts 41 are provided. The drive motor 13 is connected to one gear-type rotating shaft 41 through a drive shaft 14. The other gear-type rotating shaft 41 is driven. The two gear-type rotating shafts 41 are rotatably connected to the sludge collection trough. The sludge collection trough is connected to the inlet end of the sludge storage tank 16 through a sludge pipe 27. A solenoid valve 15 is provided on the sludge pipe 27. The two ends of the transmission track 43 are respectively connected to the gear-type rotating shafts 41. Scrapers 42 are provided on the transmission track 43. The drive motor 13 drives the gear-type rotating shaft 41 to rotate, and the gear-type rotating shaft 41 drives the transmission track 43 to rotate, thereby causing the scrapers 42 on the transmission track 43 to scrape the sludge out of the sludge collection trough and into the sludge pipe 27.

[0042] A water collection well 23 and a water interception ditch 24 are provided below the screw press 22. The water collection well 23 and the water interception ditch 24 are connected. The water collection well 23 is connected to the primary sedimentation tank 44 of the sedimentation tank through a return water pipe 28. A pipeline pump 21 is provided on the return water pipe 28.

[0043] An ultrasonic flow meter 2 is installed on the inlet pipe 1. The ultrasonic flow meter 2 is connected to the control system 4 via a data cable 3. A recycled water pipe 26 is installed on the outlet end of the three-stage sedimentation tank 46 of the sedimentation tank. A treatment water pump 25 is installed on the recycled water pipe 26.

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

[0045] S1: High-turbidity wastewater enters the mixing tank 601 after being metered by the inlet pipe 1 and ultrasonic flow meter 2. The concentration of suspended solids (SS) in the raw water is measured by turbidity meter 5 in the mixing tank 601. The flow rate and turbidity data are connected to the control system 4 via data cable 3. The control system 4 controls the amount of flocculant added by metering pump 7, accurately adding flocculant and ensuring flocculation effect, reducing labor intensity and saving reagent consumption.

[0046] S2: Start the agitator 9. Driven by the motor, the agitator 9 thoroughly mixes the flocculant with the raw water. The uniformly mixed wastewater is then introduced into the bottom of the primary sedimentation tank 44 through the siphon pipe 10. After sedimentation and retention for 20 minutes, the wastewater enters the secondary sedimentation tank 45 through the water passage 12 at the top of the primary sedimentation tank 44. After sedimentation and retention for 20 minutes in the secondary sedimentation tank 45, the wastewater enters the tertiary sedimentation tank 46 through the water passage 12 at the bottom of the secondary sedimentation tank 45. After sedimentation, the clear water enters the recycled water pipeline 26 from the top of the tertiary sedimentation tank 46 and is then pumped into the recycled water system by the treated water pump 25 for recycling or discharge.

[0047] S3: The sludge settled in the sedimentation tank enters the sludge collection trough with an inclined bottom. 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 closed during non-sludge discharge periods. During sludge discharge, the solenoid valve 15 is opened, and the sludge scraper 11 sends the deposited sludge into the sludge storage tank 16. Excess water in the upper part of the sludge storage tank 16 enters the primary sedimentation tank 44 through the overflow return water pipe 18 and the overflow valve 17.

[0048] S4: When it is necessary to discharge the sludge in the sludge storage tank 16, close the solenoid valve 15 and open the discharge valve 38. The sludge is sent to the screw press 22 for dewatering through the sludge pipeline pump 20. The dewatered sludge is discharged into the waste disposal site. The wastewater generated after dewatering 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 water pipe 28.

Claims

1. A high-turbidity wastewater treatment system, characterized in that: The system includes an inlet pipe (1), a control system (4), a sludge storage tank (16), a screw press (22), a flocculation treatment component, and a sedimentation tank. The 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 screw press (22) through a mud pipe (27). The screw press (22) is connected to the sedimentation tank through a return water pipe (28). A sludge scraper (11) is installed on the sedimentation tank. The control system (4) is electrically connected to the sludge scraper (11), the sludge storage tank (16), the screw press (22), and the flocculation treatment component, respectively. The sludge storage tank (16) is equipped with a baffle plate (32), and a staggered perforated plate (33) is provided on the upper part of the baffle plate (32). The staggered perforated plate (33) is equipped with a baffle plate (32) and a filter screen (29) on the upper part of the staggered perforated plate (33). The bottom of the sludge storage tank (16) is connected to a sludge pipe (27) and a support (39). The sludge pipe (27) is connected to the sludge storage tank (16) through a relief valve (38). The sludge pipe (27) connected to the relief valve (38) is connected to a screw press (22). A sludge pipe pump (20) is provided on the sludge pipe (27) connected to the screw press (22). The mud storage tank (16) is equipped with a nozzle water supply pipe (36). The 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) through a connector (40). The inlet end of the nozzle water supply pipe (36) is connected to a water supply pipe (34). A pipeline pressurization pump (35) is installed on the water supply pipe (34). A vent pipe (31) is installed on the top of the mud storage tank (16). A pneumatic valve (30) is installed on the vent pipe (31). The sludge storage tank (16) is connected to the overflow return water pipe (18), and the overflow return water pipe (18) is equipped with an overflow pipe valve (17) and a gate valve (19). The other end of the overflow return water pipe (18) is connected to the sedimentation tank. The sedimentation tank is provided with a sludge collection trough at the bottom. The sludge scraper (11) includes a drive motor (13), a gear-type rotating shaft (41), and a transmission track (43). The drive motor (13) is connected to the gear-type rotating shaft (41) through a drive shaft (14). The gear-type rotating shaft (41) is rotatably connected to the sludge collection trough. The sludge collection trough is connected to the inlet end of the sludge storage tank (16) through a mud pipe (27). A solenoid valve (15) is provided on the mud pipe (27). The two ends of the transmission track (43) are respectively connected to the gear-type rotating shaft (41). A scraper (42) is provided on the transmission track (43).

2. The high-turbidity wastewater treatment system as described in claim 1, characterized in that: 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 passage hole (12) at the top, which is connected to the secondary sedimentation tank (45). The secondary sedimentation tank (45) is provided with a water passage hole (12) at the bottom, which is connected to the tertiary sedimentation tank (46). The flocculation treatment component is installed on the primary sedimentation tank (44). The sludge scraper (11) is installed 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 connected to the inlet end of the sludge storage tank (16) through a sludge pipe (27).

3. The high-turbidity wastewater treatment system as described in claim 1, characterized in that: The flocculation treatment component includes a mixing tank (601), a flocculant storage tank (6) and a stirrer (9). A flocculant pipeline (8) is provided on the flocculant storage tank (6), and a metering pump (7) is provided on the flocculant pipeline (8). The mixing tank (601) is connected to the sedimentation tank through a siphon pipe (10), and a turbidity meter (5) is provided on the inner wall of the mixing tank (601).

4. The high-turbidity wastewater treatment system as described in claim 1, characterized in that: A water collection well (23) and a water interception ditch (24) are provided below the screw press (22). The water collection well (23) and the water interception ditch (24) are connected. The water collection well (23) is connected to the sedimentation tank through a return water pipe (28). A pipeline pump (21) is provided on the return water pipe (28).

5. The high-turbidity wastewater treatment system as described in claim 1, characterized in that: An ultrasonic flow meter (2) is installed on the inlet pipe (1). The ultrasonic flow meter (2) is connected to the control system (4) via a data cable (3). A recycled water pipe (26) is installed on the sedimentation tank. A treatment water pump (25) is installed on the recycled water pipe (26).

6. A method of using the high-turbidity wastewater treatment system as described in any one of claims 1-5, characterized in that, Includes the following steps: S1: High turbidity wastewater enters the mixing tank (601) after being metered by the inlet pipe (1) and ultrasonic flow meter (2). The concentration of suspended solids in the raw water is measured by the turbidity meter (5) in the mixing tank (601). The flow rate and turbidity data are connected to the control system (4) via the data line (3). The flocculant addition amount of the metering pump (7) is controlled by the control system (4). S2: Start the agitator (9) to stir thoroughly. Through the siphon pipe (10), the stirred wastewater is introduced into the bottom of the primary sedimentation tank (44). After sedimentation, the wastewater enters the secondary sedimentation tank (45) through the water passage (12) at the top of the primary sedimentation tank (44). After sedimentation in the secondary sedimentation tank (45), the wastewater enters the tertiary sedimentation tank (46) through the water passage (12) at the bottom of the secondary sedimentation tank (45). After sedimentation, the clear water enters the recycled water pipeline (26) from the top of the tertiary sedimentation tank (46) and is sent to the recycled water system by the treatment water pump (25). S3: The sludge settled in the sedimentation tank enters the sludge collection trough at the bottom. In order to ensure that the wastewater does not enter the sludge storage tank (16), the solenoid valve (15) at the front end of the sludge storage tank (16) is closed during non-sludge discharge periods. When discharging sludge, the solenoid valve (15) is opened, and the sludge is sent into the sludge storage tank (16) by 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 water pipe (18) and the overflow pipe valve (17). 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 into the screw press (22) for dewatering through the sludge pipeline pump (20). The wastewater generated after dewatering is collected in the collection well (23) through the intercepting ditch (24), and sent into the primary sedimentation tank (44) through the pipeline pump (21) and the return water pipe (28).

Images