Intelligent and efficient sludge-water separation device and system

Abstract

The utility model discloses an intelligent efficient sludge and water separation equipment and system, and the equipment includes filter jar body, is separated for mixed liquid cavity and filter clear liquid cavity through the cylindrical filter screen in its inside, and mixed liquid cavity is equipped with mixed liquid water inlet and mixed liquid reflux port, and filter clear liquid cavity is equipped with clear liquid water outlet, still be equipped with brush cleaning subassembly, backwash water inlet, backwash water outlet, pressure sensor and differential pressure controller, and the differential pressure controller can trigger backwash, and the system includes the equipment and storage jar, pump body etc, and backwash is controlled through PLC, and the utility model realizes sludge efficient interception, has intelligent self -cleaning function, adapts to high concentration sludge and water separation, does not need reagent, guarantees biochemical system stability and water discharge standard.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology in the environmental protection industry, and in particular to an intelligent and efficient mud-water separation device and system. Background Technology

[0002] In wastewater treatment processes, sludge-water separation is a crucial step in maintaining the stable operation of the biological treatment system. Currently, commonly used sludge-water separation methods mainly include sedimentation (such as sedimentation tanks and inclined tube sedimentation), membrane separation (such as MBR and ultrafiltration membrane methods), centrifugation, air flotation, and magnetic flocculation.

[0003] Among them, sedimentation tanks rely on gravity settling to achieve solid-liquid separation. Their separation efficiency is significantly limited by the sludge settling performance, resulting in low separation efficiency and large footprint. Furthermore, they are prone to separation failure when sludge concentration fluctuates or the floc structure is loose. Although membrane separation technology can improve the retention effect, it faces problems such as severe membrane fouling and frequent chemical cleaning leading to increased operating costs. Air flotation and centrifugation methods require external power input and reagent addition, which increases the complexity of the process and the treatment cost.

[0004] In wastewater treatment in the chemical industry, existing methods often fail to effectively prevent sludge loss when dealing with the need for sludge-water separation under complex water quality conditions. This leads to instability in the biological system, making it difficult to meet stable and efficient treatment requirements, affecting the overall operation of the wastewater treatment system, and increasing maintenance costs. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent and efficient mud-water separation device and system to solve the problems mentioned in the background art. It can achieve efficient sludge interception, has a self-cleaning function and can adapt to the separation of high-concentration mud and water. Without the need for external reagents, it can ensure the stability of sludge concentration in the biological system and that the effluent water quality meets the standards.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an intelligent and efficient mud-water separation device, including a filter tank, wherein the filter tank is internally provided with a filter screen that divides its internal cavity into a mixed liquid cavity and a filtered liquid cavity; the mixed liquid cavity is provided with a mixed liquid inlet and a mixed liquid return outlet, and the filtered liquid cavity is provided with a clear liquid outlet; it also includes a cleaning component for cleaning the filter screen, the cleaning component including a brush that cooperates with the filter screen, a rotating shaft connected to the brush, a motor that drives the rotating shaft to rotate, and a backwash water pump; the filter tank... The filter tank is also equipped with a backwash inlet and a backwash outlet connected to the filtrate. A first pressure sensor and a second pressure sensor are installed on the filter tank to monitor the pressure of the mixed liquid chamber and the filtrate chamber, as well as a differential pressure controller connected to the signals of the first pressure sensor and the second pressure sensor. The differential pressure controller can trigger the backwash function when the pressure difference monitored by the first pressure sensor and the second pressure sensor exceeds a set value. The backwash water pump will bring backwash water in from the backwash inlet and out from the backwash outlet to achieve backwashing of the filter screen.

[0007] Furthermore, this application also proposes that the brush is arranged in a ring around the rotating shaft, and the bristles of the brush are in close contact with the outer surface of the filter screen, and the rotating shaft is connected to the top of the filter tank through a sealed bearing.

[0008] Furthermore, this application also proposes that the filter tank is a vertically arranged cylindrical structure, and the filter screen is a cylindrical structure coaxially installed inside the filter tank.

[0009] Furthermore, this application also proposes that the two ends of the filter screen be detachably fixed to the filter tank.

[0010] Furthermore, this application also proposes that the inlet of the mixed liquid is located at the top of the filter tank and is connected to the mixing chamber along the tangential direction of the filter tank, so that the mixed liquid enters the mixing chamber tangentially in a swirling state, and the return port of the mixed liquid is located at the bottom of the filter tank and is connected to the mixing chamber.

[0011] Furthermore, this application also proposes that the clear liquid outlet is located on the side of the bottom of the filter tank and is connected to the filter liquid chamber, the backwash inlet is located on the side of the bottom of the filter tank and is connected to the filter liquid chamber, and the backwash outlet is located on the side of the top of the filter tank and is connected to the filter liquid chamber.

[0012] The filter material can be changed according to the properties of the mixture. Preferably, the filter is made of 304 stainless steel.

[0013] This application also proposes an intelligent and efficient mud-water separation system, including the aforementioned mud-water separation equipment, a mud-water mixture storage tank, a booster pump, a clear liquid tank, and a backwash water pump. The booster pump is connected to the mud-water mixture storage tank and the mixture inlet of the mud-water separation equipment via a process water pipeline. The mixture return port is connected to the mud-water mixture storage tank via a mud-water mixture pipeline. The backwash water pump is connected to the clear liquid tank and the backwash inlet of the mud-water separation equipment via a backwash water pipeline. The backwash outlet is connected to the mud-water mixture storage tank via a backwash water pipeline. The clear liquid outlet of the mud-water separation equipment is connected to the clear liquid tank via a process water pipeline. The differential pressure controller in the mud-water separation equipment and the backwash water pump are connected to the PLC control system via signal lines. The PLC control system controls the operating status of the backwash water pump according to the pressure difference information fed back by the differential pressure controller or the set time period.

[0014] Furthermore, this application also proposes that the clear liquid tank is connected to a subsequent treatment system, the mixed liquid return port is connected to a sludge dewatering system, and the sludge-water mixed liquid storage tank is connected to an external water source.

[0015] Furthermore, this application also proposes that flow meters be installed on the process water pipes, mud-water mixture pipes, and backwash water pipes.

[0016] Compared with existing technologies, the beneficial effects achieved by this utility model are as follows: The use of a cylindrical filter screen and cross-flow filtration design, combined with real-time mechanical cleaning by a brush, can efficiently intercept suspended solids in high-concentration sludge water, improving separation efficiency without the need for chemical additives, thus reducing treatment costs. Through the linkage of a pressure sensor, differential pressure controller, and PLC control system, automatic backwashing based on pressure difference or timed intervals is achieved, effectively preventing filter screen clogging, ensuring continuous and stable equipment operation, and reducing the need for manual maintenance. The filter screen is made of stainless steel and is detachable, with strong corrosion resistance, facilitating replacement and maintenance. The vertical cylindrical tank structure is compact, occupying a small area, and suitable for various sites. The backwash water is the clarified liquid after system treatment. Both backwash wastewater and unfiltered mixed liquid are returned to the sludge-water mixed liquid storage tank, realizing water resource recycling, reducing sludge discharge, and adapting to complex water quality conditions such as sludge concentration fluctuations. It stably maintains the sludge concentration of the biological system, ensuring that the effluent water quality meets standards. It is suitable for wastewater treatment scenarios in environmental protection, chemical, and other industries, and can replace the functions of traditional separation processes such as anaerobic sedimentation tanks, secondary sedimentation tanks, sand filters, and MBR. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the mud-water separation equipment of this utility model; Figure 2 This is a schematic diagram of the mud-water separation system of this utility model.

[0019] In the diagram: 1. Sludge-water separation equipment; 2. Sludge-water mixture storage tank; 3. Booster pump; 4. Clarified liquid tank; 5. Backwash water pump; 6. Process water pipeline; 7. Sludge-water mixture pipeline; 8. Backwash water pipeline; 9. Signal line; 11. Filter tank; 12. Filter screen; 13. Brush; 14. Shaft; 15. Motor; 16. Mixed liquid inlet; 17. Clarified liquid outlet; 18. Mixed liquid return port; 19. Backwash inlet; 20. Backwash outlet; 21. First pressure sensor; 22. Second pressure sensor; 23. Differential pressure controller; 24. Mixed liquid chamber; 25. Filtered liquid chamber. Detailed Implementation

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0021] Please see the appendix Figure 1 - Appendix Figure 2 This utility model provides an embodiment of an intelligent and efficient mud-water separation device, including a filter tank 11. The filter tank 11 has a filter screen 12 inside, which divides its internal cavity into a mixed liquid chamber 24 and a filtered liquid chamber 25. The mixed liquid chamber 24 has a mixed liquid inlet 16 and a mixed liquid return outlet 18, and the filtered liquid chamber 25 has a clear liquid outlet 17. It also includes a cleaning assembly for cleaning the filter screen 12, which includes a brush 13 that cooperates with the filter screen 12, a rotating shaft 14 connected to the brush 13, and a motor 15 that drives the rotating shaft 14 to rotate. The filter tank 11 is also equipped with a filter screen... The filter tank 11 is equipped with a backwash inlet 19 and a backwash outlet 20 connected in liquid. A first pressure sensor 21 and a second pressure sensor 22 are provided on the filter tank 11 to monitor the pressure of the mixed liquid chamber 24 and the filtered liquid chamber 25. A differential pressure controller 23 is connected to the first pressure sensor 21 and the second pressure sensor 22. The differential pressure controller 23 can trigger the backwash function when the pressure difference monitored by the first pressure sensor 21 and the second pressure sensor 22 exceeds a set value, so that the backwash water enters from the backwash inlet 19 and flows out through the backwash outlet 20 to realize the backwashing of the filter screen 12.

[0022] This technical solution introduces a high-flow-rate, high-concentration sludge-water mixture into the mixing chamber 24 under swirling conditions. Suspended solids such as flocculent activated sludge and granular sludge are trapped by the filter screen 12. These trapped solids are then washed away by the high-velocity water flow within the mixing chamber 24 and the intermittent physical cleaning by the mechanical brush 13. The filter screen 12 achieves physical separation of the mixed liquid and the filtrate. The cleaning component effectively removes deposits from the surface of the filter screen 12, preventing pore blockage and ensuring the cleanliness and filtration efficiency of the filter screen 12. When the pressure difference exceeds a set value, the differential pressure controller 23 automatically initiates the backwashing process, using reverse water flow to flush the pores of the filter screen 12. This achieves continuous and stable operation of the filtration process, solving the problem of traditional equipment requiring shutdown for cleaning. Compared with existing technologies, this solution significantly improves filtration efficiency and equipment reliability through the synergistic effect of mechanical cleaning and automatic backwashing, while reducing the need for manual maintenance. Specifically, the introduction of pressure monitoring and automatic control systems enables the timely detection and handling of filter 12 clogging issues, avoiding a decrease in processing efficiency due to clogging.

[0023] Furthermore, this application also proposes that the brushes 13 are arranged in a ring-shaped interval around the rotating shaft 14, and the bristles of the brushes 13 are in close contact with the outer surface of the filter screen 12, and the rotating shaft 14 is connected to the top of the filter tank 11 through a sealed bearing.

[0024] In practical implementation, a single injection-molded brush body or a brush body composed of multiple circumferentially spliced ​​brush strips can be selected. This technical solution achieves full coverage cleaning of the outer surface of the filter screen 12 through the layout of the annular brushes 13. The circumferentially evenly distributed brushes 13 form a continuous scraping action when rotating, effectively removing particles attached to the pores of the filter screen 12.

[0025] Furthermore, this application also proposes that the filter tank 11 is a vertically arranged cylindrical structure, and the filter screen 12 is a cylindrical structure coaxially installed inside the filter tank 11.

[0026] The vertical cylindrical structure reduces the limitation of the equipment on the site area. The coaxial double cylindrical structure of the filter tank 11 and the filter screen 12 forms a uniform annular filtrate chamber 25, which makes the tangential flow velocity distribution more stable and avoids the accumulation of sludge on the surface of the filter screen 12 caused by local eddies.

[0027] Furthermore, this application also proposes that the two ends of the filter screen 12 be detachably fixed inside the filter tank 11.

[0028] The detachable fixing methods include, but are not limited to, the following: a flange connection structure, with a flange at the end of the filter screen 12, which is bolted to the flange at the top or bottom of the filter tank 11; or a snap-fit ​​connection between the bottom of the filter screen 12 and the annular groove on the inner wall of the tank bottom; or a threaded connection structure, with external threads machined at the end of the filter screen 12, which are screwed to the internal threads on the inner wall of the tank. This technical solution achieves modular installation of the filter screen 12 through a detachable connection structure. When the filter screen 12 needs cleaning or replacement, it can be removed entirely by simply releasing the end fixing, significantly reducing the difficulty and time cost of maintenance operations, while avoiding damage to the tank structure caused by disassembly.

[0029] Preferably, the filter screen 12 is made of 304 stainless steel. The filter tank 11, pipes and other components involved in this application are all made of stainless steel, which has strong corrosion resistance and improves the service life of the equipment.

[0030] Furthermore, this application proposes that the mixed liquid inlet 16 is located at the top of the filter tank 11 and communicates with the mixed liquid chamber 24, and the mixed liquid return port 18 is located at the bottom of the filter tank 11 and communicates with the mixed liquid chamber 24. The mixed liquid inlet 16 can be tangentially fixed to the tank wall using a flange connection or a threaded connection, and the mixed liquid return port 18 is a tubular structure with a regulating valve for easy control of the return flow rate. This technical solution, through the coordinated design of the top mixed liquid inlet 16 and the mixed liquid return port 18, allows the mixed liquid to continuously wash the filter screen surface from top to bottom in a swirling motion within the mixed liquid chamber 24, ensuring full contact with the filter screen 12 and achieving sludge retention and solid-liquid separation.

[0031] Furthermore, this application proposes that the clear liquid outlet 17 is located on the side of the bottom of the filter tank 11 and communicates with the filtrate chamber 25; the backwash inlet 19 is located on the side of the bottom of the filter tank 11 and communicates with the filtrate chamber 25; and the backwash outlet 20 is located on the side of the top of the filter tank 11 and communicates with the filtrate chamber 25. The clear liquid outlet 17, located on the bottom side, can be connected to an external pipeline via a flange or threaded connection, and its installation height is adjustable to accommodate different liquid level requirements. During filtration, the low-position arrangement of the clear liquid outlet 17 utilizes gravity to achieve efficient discharge of the filtrate; during backwashing, the bottom backwash inlet 19 and the top backwash outlet 20 form an upward flushing channel, allowing the backwash water to fully penetrate the pores of the filter screen 12.

[0032] This application also proposes an intelligent and efficient mud-water separation system, including a mud-water separation device 1, a mud-water mixture storage tank 2, a booster pump 3, a clear liquid tank 4, and a backwash water pump 5. The booster pump 3 is connected to the mud-water mixture storage tank 2 and the mixture inlet 16 of the mud-water separation device 1 via a process water pipeline 6. The mixture return port 18 is connected to the mud-water mixture storage tank 2 via a mud-water mixture pipeline 7. The backwash water pump 5 is connected to the clear liquid tank 4 and the backwash inlet 19 of the mud-water separation device 1 via a backwash water pipeline 8. The backwash outlet 20 is connected to the mud-water mixture storage tank 2 via a backwash water pipeline 8. The clear liquid outlet 17 of the mud-water separation device 1 is connected to the clear liquid tank 4 via a process water pipeline 6. The differential pressure controller 23 in the mud-water separation device 1 and the backwash water pump 5 are connected to the PLC control system via a signal line 9. The PLC control system controls the operating status of the backwash water pump 5 according to the pressure difference information fed back by the differential pressure controller 23 or the set time period.

[0033] This system achieves continuous processing through a closed-loop design. The mud-water mixture is pumped to the mud-water separation device 1 via a booster pump 3. The filtrate enters the clear liquid tank 4, and the mixed liquid is returned to the mud-water mixture storage tank 2 for reprocessing. The backwash water uses the system's own filtrate, and the wastewater is returned to the mud-water mixture storage tank 2 for recycling. The differential pressure controller 23 works in conjunction with the PLC system to automatically start and stop the backwash water pump 5 based on the pressure difference between the mixed liquid chamber 24 and the filtrate chamber 25 or a preset cycle, achieving on-demand cleaning. This solves the problems of traditional methods that rely on manual intervention and have low separation efficiency. The pressure feedback mechanism ensures the permeability of the filter screen 12, reducing energy consumption and maintenance frequency. Compared with existing technologies, the advantages of this system are: the use of a combined cleaning method of mechanical cleaning and hydraulic backwashing avoids performance degradation caused by membrane fouling; precise control of the backwashing timing by the PLC reduces energy waste caused by ineffective rinsing; and the closed-loop pipeline design improves water resource utilization and reduces sludge discharge.

[0034] Furthermore, this application also proposes that the clear liquid tank 4 is connected to the subsequent treatment system, so that the qualified clear liquid can directly enter the deep treatment unit or the subsequent treatment unit. The mixed liquor return port 18 is also connected to the sludge dewatering system. The direct connection design between the mixed liquor return port 18 and the sludge dewatering system allows the concentrated sludge to enter the dewatering process without temporary storage. The mud-water mixed liquor storage tank 2 is also connected to an external water source. The external water source interface of the mud-water mixed liquor storage tank 2 can be used to adjust the concentration of the mixed liquor.

[0035] Furthermore, this application proposes a technical solution for installing flow meters on the process water pipeline 6, the slurry-water mixture pipeline 7, and the backwash water pipeline 8. Specifically, the flow meters can be electromagnetic, ultrasonic, or turbine flow meters, and a complete flow monitoring system can be established by collecting data on the process water inlet flow rate, the mixture return flow rate, and the backwash water flow rate in real time.

[0036] Working principle: Filtration Process: The mud-water mixture is pressurized from the mud-water mixture storage tank 2 by the booster pump 3 and enters the mixture chamber 24 of the filter tank 11 through the process water pipeline 6 from the mixture inlet 16. Under the action of pressure difference, the clear liquid in the mixture passes through the cylindrical filter screen 12 and enters the filtered liquid chamber 25, and finally flows into the clear liquid tank 4 from the clear liquid outlet 17. The sludge trapped by the filter screen 12 remains in the mixture chamber 24 and returns to the mud-water mixture storage tank 2 through the mud-water mixture pipeline 7 from the mixture return port 18 along with part of the unfiltered mixture, forming a circulating filtration. At the same time, the motor 15 drives the rotating shaft 14 to rotate the annular brush 13. The brush 13 is in close contact with the outer surface of the filter screen 12, continuously cleaning the sludge attached to the filter screen 12 and preventing the filter screen 12 from clogging.

[0037] Backwashing process: The first pressure sensor 21 and the second pressure sensor 22 monitor the pressure of the mixing chamber 24 and the filter chamber 25 in real time, respectively, and transmit the signals to the differential pressure controller 23. When the pressure difference between the two exceeds the set value, the differential pressure controller 23 feeds back the signal to the PLC control system through the signal line 9, triggering the backwashing function. The PLC control system starts the backwash water pump 5. The clear liquid in the clear liquid tank 4 enters the filter chamber 25 through the backwash water pipe 8 from the backwash inlet 19. Under pressure, it backwashes the filter screen 12, flushing the blockage in the pores of the filter screen 12 into the mixing chamber 24, and then flows back to the mud-water mixture storage tank 2 through the backwash water pipe 8 from the backwash outlet 20. In addition, the PLC control system can also start the backwash water pump 5 according to the set time cycle to realize timed backwashing.

[0038] Equipment application examples: The intelligent and efficient mud-water separation equipment of this invention has been successfully applied in the anaerobic biological treatment unit of acrylic acid and butyl acrylate production wastewater. The specific implementation process is as follows: I. Determining the Specifications of Equipment Filters A 10m³ sample was taken from the effluent outlet of anaerobic tank #1 and transferred to sludge-water mixture storage tank #2. The sludge-water separation equipment 1 used has a volume of 0.3m³. The mixture inlet 16 of the equipment is connected to the outlet of the booster pump 3 of sludge-water mixture storage tank #1, the clear liquid outlet 17 is connected to clear liquid storage tank #2, the sludge-water mixture return outlet 18 is connected to the top of sludge-water mixture storage tank #1, the backwash inlet is connected to the outlet of the booster pump 3 of clear liquid storage tank #2, and the backwash outlet 20 is connected to storage tank #3. The equipment was run stably for 2 hours. The influent flow rate was set to 10 m³ / h, and the influent sludge concentration was 1258 mg / L. The mixed liquor inlet valve 16, the clear liquor outlet valve 17, and the mixed liquor return valve 18 were opened. The backwash inlet valve 19 and the backwash outlet valve 20 were closed. 1000-mesh filter screen 12, 2500-mesh filter screen 12, and 4000-mesh filter screen 12 were installed respectively and tested under the same water flow rate. The test results are shown in Table 1 below.

[0039]

[0040] Table 1 Table 1 shows that the 4000-mesh stainless steel filter has the highest sludge interception efficiency, reaching over 97.2%. However, considering the economy and maintainability of the 4000-mesh filter, a 2500-mesh filter can achieve the expected experimental results. In practical applications, different filter specifications can be selected after small-scale tests based on the different sludge mixture conditions.

[0041] II. Equipment Installation and Operation in the Project Installation method: Adjust the inlet of the anaerobic tank circulation pump to the outlet of the anaerobic tank, connect the mixed liquor inlet 16 of the mud-water separation device 1 to the outlet of the anaerobic tank circulation pump, connect the clear liquid outlet 17 to the inlet of the aerobic tank, connect the mixed liquor return outlet 18 to the anaerobic tank, connect the backwash inlet 19 to the outlet of the secondary sedimentation effluent tank lift pump, and connect the backwash outlet 20 to the aerobic tank.

[0042] Key parameters of the equipment: The equipment size is φ500*H1200mm, the filter screen 12 has a pore size of 2500 mesh, the material is 304 stainless steel, the inner diameter of the filter screen 12 is φ200mm, and the cross-flow velocity is ≥4m / s.

[0043] Operation mode: The anaerobic tank influent flow rate is 15 m³ / h, and the influent flow rate of this utility model equipment is 450 m³ / h, with an influent pressure of 0.3 MPa. This ensures that the water flow velocity on the surface of the filter screen 12 is not less than 4 m / s, forming a cross-flow scouring effect. The equipment is set to operate at an effluent flow rate of 15 m³ / h, running 24 hours a day. The brush 13 is set to automatically activate for 5 minutes every 2 hours, and the equipment does not stop when the brush 13 is activated. The backwashing program is controlled by a PLC via a differential pressure controller. When the pressure difference exceeds the set pressure value (0.1 MPa), the backwash pump 5 is activated for 30 minutes of backwashing. This equipment only requires normal daily inspection and maintenance to ensure normal operation.

[0044] III. Equipment Operation Results The operating status of the equipment over 60 days is shown in Table 2, under the condition that the influent water quality of the anaerobic tank is always maintained at a high load of 8000-10000 mg / L COD and 600-800 mg / L formaldehyde.

[0045]

[0046] Table 2 As shown in Table 2, this new device utilizes the principle of mud-water separation to significantly reduce sludge runoff in the anaerobic pond. By increasing the sludge concentration in the anaerobic pond, the organic matter removal efficiency is greatly improved. When used in conjunction with the existing anaerobic pond circulation pump system, the sludge concentration in the anaerobic pond gradually increases from the original 3150 mg / L to 8580 mg / L over approximately 60 days. The sludge runoff effect of the anaerobic system is effectively suppressed, and the organic matter removal efficiency in the anaerobic pond increases from the original 50% to approximately 85%, reducing the operational pressure on the subsequent aerobic biological system.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An intelligent and efficient slurry separation device, characterized by: The system includes a filter tank (11), which is equipped with a filter screen (12) that divides its internal cavity into a mixing chamber (24) and a filtrate chamber (25). The mixing chamber (24) is provided with a mixing inlet (16) and a mixing return outlet (18). The mixing inlet (16) is arranged along the tangential direction of the filter tank (11), and the filtrate chamber (25) is provided with a clear liquid outlet (17). It also includes a cleaning assembly for cleaning the filter screen (12), the cleaning assembly including a brush (13) that cooperates with the filter screen (12), a rotating shaft (14) connected to the brush (13), and a motor (15) that drives the rotating shaft (14) to rotate; the filter tank (11) is also provided with a backwash inlet (19) and a backwash outlet (20) communicating with the filtrate chamber (25), and a first pressure monitoring device is provided on the filter tank (11) for monitoring the pressure of the mixed liquid chamber (24) and the filtrate chamber (25). Force sensor (21) and second pressure sensor (22), and differential pressure controller (23) connected to the first pressure sensor (21) and second pressure sensor (22); the differential pressure controller (23) can trigger backwash function when the pressure difference exceeds the set value according to the pressure difference monitored by the first pressure sensor (21) and the second pressure sensor (22), so that backwash water enters from the backwash inlet (19) and flows out through the backwash outlet (20) to realize backwashing of filter screen (12).

2. The intelligent and efficient slurry separation device according to claim 1, characterized in that: The brush (13) is arranged in a ring around the rotating shaft (14), and the bristles of the brush (13) are in close contact with the outer surface of the filter screen (12). The rotating shaft (14) is connected to the top of the filter tank (11) through a sealed bearing.

3. The intelligent and efficient slurry separation device according to claim 1, wherein: The filter tank (11) is a vertically arranged cylindrical structure, and the filter screen (12) is a cylindrical structure coaxially installed inside the filter tank (11).

4. The intelligent and efficient slurry separation device according to claim 3, wherein: The two ends of the filter screen (12) are detachably fixed inside the filter tank (11).

5. The intelligent and efficient slurry separation device according to claim 1, wherein: The inlet (16) of the mixed liquid is located at the top of the filter tank (11) and is connected to the mixed liquid chamber (24) along the tangential direction of the filter tank (11). The return port (18) of the mixed liquid is located at the bottom of the filter tank (11) and is connected to the mixed liquid chamber (24).

6. The intelligent and efficient mud-water separation equipment according to claim 5, characterized in that: The clear liquid outlet (17) is located on the side of the bottom of the filter tank (11) and is connected to the clear liquid chamber (25). The backwash inlet (19) is located on the side of the bottom of the filter tank (11) and is connected to the clear liquid chamber (25). The backwash outlet (20) is located on the side of the top of the filter tank (11) and is connected to the clear liquid chamber (25).

7. An intelligent and efficient mud-water separation system, characterized in that: The mud-water separation equipment as described in any one of claims 1-6 further includes a mud-water mixture storage tank (2), a booster pump (3), a clear liquid tank (4), and a backwash water pump (5). The booster pump (3) is connected to the mud-water mixture storage tank (2) and the mixture inlet (16) of the mud-water separation equipment via a process water pipeline (6). The mixture return port (18) is connected to the mud-water mixture storage tank (2) via a mud-water mixture pipeline (7). The backwash water pump (5) is connected to the clear liquid tank (4) and the backwash water pump (5) of the mud-water separation equipment via a backwash water pipeline (8). The backwash inlet (19) and backwash outlet (20) are connected to the mud-water mixture storage tank (2) via the backwash water pipe (8); the clear liquid outlet (17) of the mud-water separation equipment is connected to the clear liquid tank (4) via the process water pipe (6); the differential pressure controller (23) and backwash water pump (5) in the mud-water separation equipment are connected to the PLC control system via the signal line (9); the PLC control system controls the operation status of the backwash water pump (5) according to the pressure difference information fed back by the differential pressure controller (23) or the set time period.

8. The intelligent and efficient mud-water separation system according to claim 7, characterized in that: Flow meters are installed on the process water pipe (6), mud-water mixture pipe (7), and backwash water pipe (8).

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