A device for zero discharge and reuse of waste water in a thermal power plant

Abstract

The application discloses a zero-emission treatment and recycling device for waste water of a thermal power plant, which comprises a workroom, a control room, a coarse filtration and interception system, a flocculation and sedimentation filtration system, a precision medium filtration mechanism, a cleaning mechanism, a deep filtration system, a water collecting tank, a pump set and a backflow pipeline, the precision medium filtration mechanism is located at the left rear of the flocculation and sedimentation filtration system, and the detachable filtration component is located at the right front of the precision medium filtration mechanism. The zero-emission treatment and recycling device for waste water of the thermal power plant can remove large-particle sundries, flocculation suspended solids and fine coal dust impurities in stages, greatly improves the overall purification effect of the coal-containing waste water, realizes the full-automatic dismounting, transfer, alignment, cleaning and regeneration of the filtration core component, and adopts the combined cleaning mode of mechanical linkage scraping and high-pressure fluid flushing to clean the stubborn dirt and hardened coal dust on the surface and inside the pores of the filter material in all directions without dead angle.

Description

Technical Field

[0001] This invention relates to the field of thermal power technology, specifically to a device for zero-discharge treatment and reuse of wastewater from thermal power plants. Background Technology

[0002] Thermal power plants generate various types of wastewater during operation, mainly including circulating water discharge, boiler discharge, chemical desalination concentrate, desulfurization wastewater, coal and oil-containing wastewater, and domestic sewage from the plant area. These wastewaters vary significantly in quantity and quality, generally exhibiting high suspended solids, high hardness, and high salinity. Some wastewater also contains heavy metals, oil, and organic pollutants. The industry generally adopts a treatment approach of classified collection, differentiated treatment, and tiered reuse, employing a combination of processes such as coagulation sedimentation, membrane separation, evaporation crystallization, and biochemical treatment for purification. The treated water is preferentially reused for boiler feedwater and circulating cooling. In the water, ash removal system, and miscellaneous uses in the plant area, the high-salt concentrated water is further concentrated and solidified to ultimately achieve efficient water resource utilization and near-zero wastewater discharge, taking into account both water-saving benefits and environmental protection requirements. Among them, coal-containing wastewater is the production wastewater generated in areas such as the coal conveying system, coal yard, trestle and transfer station of the thermal power plant. It is mainly formed by ground washing, dust suppression spraying and rainwater collection in the coal yard. The water quality characteristics are high suspended solids content, many fine coal powder particles, large turbidity fluctuations, and some also contain a small amount of oil. The sludge is easy to accumulate and clump. The treated clean water is mainly reused in miscellaneous uses in the plant area such as coal yard spraying, coal conveying facility washing, and site dust suppression. In the current technical field, the treatment of coal-containing wastewater from thermal power plants currently employs traditional single-stage filtration or simple sedimentation processes. These processes suffer from limitations such as insufficient purification precision and a lack of depth in the treatment process. They are ill-suited for the comprehensive and stable removal of highly concentrated fine coal powder, suspended colloids, and trace impurities from coal-containing wastewater, which fluctuate significantly. This results in poor effluent quality stability, low reuse rates, and an inability to consistently meet the plant's standards for reuse of miscellaneous water. Furthermore, traditional treatment equipment typically uses fixed filter media structures, leading to frequent and rapid clogging. Maintenance often relies on manual disassembly, cleaning, and replacement of filter media, resulting in high labor intensity, low maintenance efficiency, and long downtime, severely impacting the continuous operation efficiency of the wastewater treatment system. In addition, traditional cleaning methods often employ a single high-pressure water washing mode, which only washes away surface dust and impurities on the filter media. This fails to effectively remove hardened coal powder deposits adhering to the pores and outer walls of the filter media, leading to incomplete cleaning, low filter media regeneration rates, and long-term problems such as increased filtration resistance, decreased system efficiency, and higher equipment energy consumption. Summary of the Invention

[0003] The purpose of this invention is to provide a zero-discharge treatment and reuse device for wastewater from thermal power plants, so as to at least solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a zero-discharge treatment and reuse device for wastewater from thermal power plants, comprising: Workshop; The control room is located inside the workshop on the right side; A coarse filtration interception system is installed inside the workshop and located in front of the control room. The coarse filtration interception system is electrically connected to the control room. The flocculation sedimentation filtration system is installed inside the workshop and located to the left of the coarse filtration interception system. The outlet pipe of the coarse filtration interception system is connected to the inlet of the flocculation sedimentation filtration system. The flocculation sedimentation filtration system is electrically connected to the control room. The precision media filtration mechanism is located inside the workshop and on the left rear side of the flocculation sedimentation filtration system. The cleaning mechanism is located inside the workshop and to the right front of the precision media filtration mechanism. A deep filtration system is installed inside the workshop and located to the right rear of the precision media filtration mechanism. The deep filtration system is electrically connected to the control room. A water collection tank is installed inside the workshop and located to the right rear of the deep filtration system. The liquid outlet pipe of the deep filtration system is connected to the liquid inlet of the water collection tank, and the water collection tank is electrically connected to the control room. The pump unit is installed inside the workshop and located on the outside right side of the water collection tank. The outlet of the water collection tank is connected to the inlet pipe of the pump unit, and the pump unit is electrically connected to the control room. A return pipeline is installed inside the upper part of the workshop, and the outlet pipe of the pump unit is connected to the return pipeline.

[0005] Preferably, the precision media filtration mechanism includes: a mounting frame, a housing shell, detachable filter components, a first delivery pump, a diversion pipeline, a second delivery pump, a collection pipeline, and auxiliary disassembly components; the mounting frame is fixedly installed inside the work area along the front-to-back direction; the housing shell is fixedly installed inside the mounting frame along the front-to-back direction; the number of detachable filter components is four, and the four detachable filter components are located at the four corners inside the housing shell; the first delivery pump is fixedly installed inside the mounting frame and located at the front right side of the housing shell, and the inlet of the first delivery pump is connected to the outlet pipe of the flocculation sedimentation filtration system, the first delivery pump... A first delivery pump is electrically connected to the control room; a diversion pipeline is installed inside the mounting frame and located at the front exterior of the housing, with the inlet of the diversion pipeline connected to the outlet of the first delivery pump; a second delivery pump is fixedly installed inside the mounting frame and located at the rear right exterior of the housing, with the outlet of the second delivery pump connected to the inlet pipe of the depth filtration system, and the second delivery pump is electrically connected to the control room; a collection pipeline is installed inside the mounting frame and located at the rear left exterior of the housing, with the outlet of the collection pipeline connected to the inlet pipe of the second delivery pump; an auxiliary disassembly component is located at the top rear side of the mounting frame.

[0006] Preferably, the detachable filter component includes: a pipe housing, an electric door, a filter cartridge, and a fixed shaft; the pipe housing is embedded and fixedly installed inside the housing along the front-rear direction, and the front and rear ends of the pipe housing extend out of the front and rear sides of the housing respectively; the front inlet pipe of the pipe housing is connected to the diversion pipe, and the rear outlet pipe of the pipe housing is connected to the collection pipe; there are two electric doors, which are respectively installed on the front top of the outer surface of the pipe housing, and the electric doors are electrically connected to the control room; the filter cartridge is detachably placed in the inner cavity of the pipe housing along the front-rear direction; there are two fixed shafts, which are respectively installed on the front and rear ends of the outer surface of the filter cartridge.

[0007] Preferably, the auxiliary disassembly components include: a fixed frame, a dual-axis moving module, and a lifting module; the number of fixed frames is two, and the two fixed frames are respectively fixedly installed at the left and right ends of the rear side of the upper surface of the mounting frame in the front-back direction; the dual-axis moving module is fixedly installed on the top inner side of the left and right fixed frames, and the dual-axis moving module is electrically connected to the control room; the lifting module is fixedly installed on the rear side of the moving end of the dual-axis moving module in the vertical direction, and the lifting module is electrically connected to the control room.

[0008] Preferably, the auxiliary disassembly components further include: a cylindrical shell, limiting pins, clamps, an electric telescopic rod, a mounting base, a groove plate, guide pulleys, a belt, a groove shell, a connector, and a push frame; the cylindrical shell is fixedly installed at the bottom of the lifting end of the lifting module; there are two limiting pins, which are respectively fixedly installed at the left and right ends of the outer surface of the cylindrical shell; there are two clamps, which are respectively rotated 180 degrees in the vertical direction and installed at the outer ends of the left and right limiting pins; the electric telescopic rod is fixedly installed in the inner cavity of the cylindrical shell in the front-back direction, and the telescopic end of the electric telescopic rod extends out of the front side of the cylindrical shell, and the electric telescopic rod is electrically connected to the control room; the mounting base is fixedly installed on the front side of the telescopic end of the electric telescopic rod; there are two groove plates, which are respectively fixedly installed at the left and right ends of the mounting base in the front-back direction, and the inner cavities of the left and right groove plates are respectively sleeved with the outer surfaces of the left and right limiting pins; there are two sets of guide pulleys, each set... The system comprises two guide pulleys, which are rotated via shafts to the front and rear ends of the outer surfaces of the left and right trough plates. It also comprises two belts, each fitted around the outside of the left and right guide pulleys. One side of each belt passes through the inner side of the left and right clamps and is fixedly connected to their interiors. The trough shell is fitted around the outside of the cylindrical shell and mounting base in the front-rear direction. The left and right sides of the trough shell each have through-holes, and the interior of these slots is fitted around the shafts of the left and right guide pulleys. Two connectors are mounted on the rear ends of the left and right sides of the outer surfaces of the left and right trough shells, rotated 180 degrees in the up-down direction. The inner sides of the two connectors are fixedly connected to the other sides of the left and right belts. Finally, two pushers are fixedly mounted on the front left and right sides of the outer surface of the trough shell in the front-rear direction.

[0009] Preferably, the cleaning mechanism includes: a tank shell, a three-axis robotic arm, a clamping module, and a cleaning fluid supply system; the tank shell is fixedly installed inside the workshop along the front-rear direction and located on the outer right front of the mounting frame, and the tank shell is electrically connected to the control room; the three-axis robotic arm is fixedly installed on the top rear side of the tank shell via a bracket, and the three-axis robotic arm is electrically connected to the control room; the clamping module is fixedly installed at the bottom of the moving end of the three-axis robotic arm, and the clamping module is electrically connected to the control room; the cleaning fluid supply system is installed on the outer front side of the three-axis robotic arm, and the cleaning fluid supply system is electrically connected to the control room. Preferably, the cleaning mechanism further includes: a track, a vertical frame, an electric roller seat, a track moving platform, a scissor lift frame, high-pressure nozzles, and physical cleaning components; the track is fixedly installed in the middle of the bottom of the inner part of the tank shell along the front-back direction; there are two vertical frames, which are respectively fixedly installed in the front and rear ends of the inner side of the track along the vertical direction; there are two electric roller seats, which are respectively fixedly installed at the top of the front and rear vertical frames, and the electric roller seats are electrically connected to the control room; the track moving platform is installed at the top of the track, and the track moving platform is electrically connected to the control room; the scissor lift frame is installed at the top of the track moving platform, and the scissor lift frame is electrically connected to the control room; there are two high-pressure nozzles, which are respectively fixedly installed at the left and right ends of the front side of the lifting end of the scissor lift frame, and the high-pressure nozzles are connected to the liquid supply pipe of the cleaning liquid supply system, and the high-pressure nozzles are electrically connected to the control room; the physical cleaning components are located on the rear side of the lifting end of the scissor lift frame.

[0010] Preferably, the physical cleaning component includes: a fixed base, an annular frame, a rotating seat, connecting rods, scrapers, and a first gear; the fixed base is fixedly installed on the lifting end of the scissor lift frame and located on the outer rear side of the two high-pressure nozzles on the left and right; the annular frame is fixedly installed on the top of the fixed base; there are several rotating seats, which are rotatably installed on the outer side of the annular frame at circumferential intervals via bearings; there are several sets of connecting rods, with two connecting rods in each set, and one end of each connecting rod is rotatably installed on the outer sides of the rotating seats via bearings, and the connecting rods are L-shaped; there are several scrapers, which are rotatably installed on the outer side of the other end of two adjacent connecting rods via rotating shafts, and the scrapers are arc-shaped; the first gear is fixedly installed on the outer side of the rotating seat on the lower left side.

[0011] Preferably, the physical cleaning component further includes: a trough, a drive motor, a connecting pin, a horizontal frame, an inclined seat, a rotating shaft, a second gear, and a spherical groove seat; the trough is rotatably mounted on the lower left side of the outer surface of the fixed base via bearings, and the axis of the trough extends to the right side of the fixed base; the drive motor is fixedly mounted on the outer right side of the fixed base, and the rotating end of the drive motor is fixedly connected to the axis of the trough, and the drive motor is electrically connected to the control room; the connecting pin is fixedly mounted in the inner cavity of the trough along the front-rear direction; the horizontal frame is fixedly mounted on the rear side of the outer surface of the fixed base along the left-right direction; the inclined seat is fixedly mounted on the front left end of the outer surface of the horizontal frame at an upward inclination; the rotating shaft is rotatably mounted on the inner side of the inclined seat via bearings, and the bottom end of the rotating shaft is tapered; the second gear is keyed to the top end of the rotating shaft, and the second gear meshes with the first gear; the spherical groove seat is fixedly mounted on the bottom end of the rotating shaft, and the spherical groove seat is inserted into the inner cavity of the trough, and the inner cavity of the spherical groove seat is engaged with the outside of the connecting pin.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. The electric doors on both the front and rear sides are opened by internal motors to release the seal on the front and rear sides of the inner cavity of the pipe shell. The dual-axis moving module drives the lifting module to move forward, backward, left, and right to the designated position behind the detachable filter component. The lifting module drives the cylinder shell to rise and fall to the designated height, aligning the cylinder shell with the rear side of the inner cavity of the pipe shell at the designated position. The electric telescopic rod extends, driving the mounting base to move forward in a linear motion, causing the trough plates fixed to the left and right sides of the mounting base to move synchronously. Under the limiting constraints of the limit pins on both sides, the trough plates on both sides move synchronously in a linear motion. The guide pulleys at the front ends of the left and right trough plates on both sides follow the movement, and the belts on both sides are guided by the guide belts on both sides. Driven by the wheels, they rotate synchronously and maintain reverse rotation. Since one end of the left and right belts is fixed to the left and right clamps respectively, the left and right belts, under the displacement and reversal of the guide pulleys, form a traction force on the tank shell through the connector, thereby driving the tank shell to move synchronously along the same axis. The tank shell drives the left and right push frames at the front end to pass through the left and right sides of the rear fixed shaft, applying a forward thrust to the filter cartridge, causing the filter cartridge to be pushed forward along the inner cavity of the pipe shell. The three-axis robotic arm drives the clamping module to move in the three-axis direction, moving the clamping module to the designated position above the filter cartridge. The clamping module clamps and grabs the outside of the filter cartridge, completing the transfer and removal of the filter cartridge.

[0013] 2. A three-axis robotic arm, in conjunction with a clamping module, moves the filter cartridge to the upper part of the inner cavity of the tank shell. A track-moving platform moves horizontally along the track surface, bringing the physical cleaning component to the end of the filter cartridge. A scissor lift drives the physical cleaning component to rise and fall to the same level as the filter cartridge. The track-moving platform adjusts its position so that the annular frame inside the physical cleaning component fits onto the outside of the filter cartridge. The three-axis robotic arm, in conjunction with the clamping module, lowers the filter cartridge, engaging the front and rear fixed shafts with the inner rollers of the electric roller seats at the front and rear ends. During the descent, the scissor lift synchronizes with the physical cleaning component's height adjustment. After placement, the three-axis robotic arm drives the clamping module to reset, and the drive motor drives the tank to rotate synchronously with the inner connecting pin. Power is transmitted to the rotating shaft via a spherical seat connected to the connecting pin, driving the rotating shaft to rotate inside the inclined seat. This causes the rotating shaft to drive the second gear to rotate, and the first gear is affected by the second gear. Under meshing transmission, the rotating seats at the corresponding positions are driven to rotate around their own axes. Several rotating seats form a parallelogram linkage constraint with adjacent rotating seats through a linkage coupling mechanism consisting of connecting rods and scrapers. Relying on the kinematic pair of the connecting rods and scrapers, the rotational motion of the active rotating seat is synchronously transmitted to all adjacent rotating seats at a constant speed transmission ratio, so that all rotating seats perform synchronous and unidirectional rotational motion. With the cooperation of the connecting rods, the scrapers are flipped to the inside, so that the scrapers can contact the outer wall of the filter cartridge. The track moving platform moves along the track in the front-back direction to drive the physical cleaning component and the high-pressure nozzle to move in the front-back direction outside the filter cartridge. The cleaning liquid supply system supplies cleaning agent to the high-pressure nozzles on both sides. After being pressurized, the high-pressure nozzles spray out, so that the contaminants attached to the medium inside the filter cartridge are separated by the high-pressure washing of the cleaning agent. During the movement of the track moving platform, the scrapers in the physical cleaning component scrape and clean the surface of the filter screen outside the filter cartridge by moving.

[0014] This system employs an integrated treatment logic that combines multi-stage gradient purification, uniform water diversion and collection, fully automated filter media disassembly and transportation, and mechanical scraping with high-pressure water washing. By removing large particles, flocculent suspended solids, and fine coal dust impurities in a step-by-step, layered manner, it significantly improves the overall purification effect of coal-containing wastewater, ensuring that the effluent quality consistently meets standards. This significantly increases the resource recovery rate of power plant wastewater, achieving closed-loop recycling of wastewater and meeting the production requirements of water conservation and emission reduction. Furthermore, it eliminates the traditional manual maintenance mode, realizing fully automated disassembly, transportation, alignment, and cleaning and regeneration of the core filter components. The entire process requires no manual intervention, significantly reducing equipment maintenance labor costs and shortening equipment downtime for maintenance. It effectively ensures the continuous and stable operation of the water treatment system, improves the automation and intelligence of the entire equipment, and adopts a composite cleaning method that combines mechanical linkage scraping with high-pressure fluid flushing. This method can remove stubborn dirt and hardened coal dust from the surface and pores of the filter media in an all-round and thorough manner, greatly reducing the frequency of filter media replacement and equipment consumable costs. It can adapt to fluctuating water quality conditions and effectively make up for various shortcomings of existing coal-containing wastewater treatment technologies in thermal power plants. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 A schematic diagram of a precision media filtration mechanism; Figure 3 for Figure 2 Exploded view of the detachable filter component; Figure 4 for Figure 2 Exploded view of auxiliary disassembly components; Figure 5 for Figure 4 Enlarged view of point A; Figure 6 for Figure 1 Explosion diagram of the cleanup facility; Figure 7 for Figure 6 Enlarged view of point B; Figure 8 for Figure 7 Diagram of physical cleaning components; Figure 9 for Figure 8 Enlarged view of point C.

[0016] In the diagram: 1. Workshop; 2. Control room; 3. Coarse filtration interception system; 4. Flocculation and sedimentation filtration system; 5. Precision media filtration mechanism; 51. Mounting frame; 52. Housing shell; 53. First transfer pump; 54. Diversion pipeline; 55. Second transfer pump; 56. Collector pipeline; 6. Detachable filter components; 61. Pipe shell; 62. Electric hatch; 63. Filter cartridge; 64. Fixed shaft; 7. Auxiliary disassembly components; 71. Fixing frame; 72. Dual-axis moving module; 73. Lifting module; 74. Cylinder shell; 75. Limit pin; 76. Clamp; 77. Electric telescopic rod; 78. Mounting base; 79. Tank plate; 710. Guide pulley; 711. Belt; 712. Tank shell; 713. Connecting... 714. Connector, Pusher, 8. Cleaning Mechanism, 81. Tank Shell, 82. Three-Axis Robotic Arm, 83. Clamping Module, 84. Cleaning Liquid Supply System, 85. Track, 86. Vertical Frame, 87. Electric Roller Seat, 88. Track Moving Platform, 89. Scissor Lift, 810. High-Pressure Nozzle, 9. Physical Cleaning Components, 91. Fixed Base, 92. Circular Frame, 93. Rotating Seat, 94. Connecting Rod, 95. Scraper, 96. First Gear, 97. Tank Cylinder, 98. Drive Motor, 99. Connecting Pin, 910. Horizontal Frame, 911. Inclined Seat, 912. Rotating Shaft, 913. Second Gear, 914. Spherical Tank Seat, 10. Deep Filtration System, 11. Water Collection Tank, 12. Pump Set, 13. Return Pipeline. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-9This invention provides a technical solution: a zero-discharge treatment and reuse device for wastewater from thermal power plants, comprising: a workshop 1, a control room 2, a coarse filtration interception system 3, a flocculation sedimentation filtration system 4, a precision media filtration mechanism 5, a cleaning mechanism 8, a deep filtration system 10, a water collection tank 11, a pump set 12, and a return pipeline 13; the control room 2 is located on the right side inside the workshop 1, and adopts an integrated structure of industrial explosion-proof and dustproof electrical control cabinet, equipped with a PLC programmable control system, a touch-screen human-machine interface, a data acquisition module, a switch control module, a frequency converter module, and overload, short circuit, and leakage protection components, supporting fully automatic program operation, manual intervention control, real-time equipment status monitoring, water quality data acquisition, and parameter storage. Functionally, control room 2 serves as the core control hub of the entire system, enabling start / stop control, parameter adjustment, fault alarm, and linkage control of all electrical components through a fully electrical connection. The coarse filtration interception system 3 is located inside workshop 1, externally in front of control room 2. It is electrically connected to control room 2 and employs a fully automatic integrated mechanical bar screen and coarse filter, suitable for the high-flow, high-turbidity influent conditions of coal-containing wastewater from thermal power plants, containing large pieces of coal slag and other impurities. The coarse filtration interception system 3 is equipped with a high-flow, corrosion-resistant booster pump, mechanical bar screen components, an automatic slag discharge mechanism, an impurity collection tank, and inlet / outlet pressure stabilizing pipelines, enabling stable interception of large-particle solids such as large pieces of coal gangue, suspended solids, and tree branches and plastics in the water. The coarse filtration interception system 3 effectively protects the downstream precision filtration equipment from clogging, wear, and other malfunctions by eliminating impurities. It can receive commands from the electrical control system in control room 2 to achieve automatic start / stop, timed sludge discharge, overload protection, and real-time feedback of operating status. The flocculation sedimentation filtration system 4 is located inside the workshop 1, on the left side outside the coarse filtration interception system 3. The outlet pipe of the coarse filtration interception system 3 is connected to the inlet of the flocculation sedimentation filtration system 4. The flocculation sedimentation filtration system 4 is electrically connected to control room 2. The flocculation sedimentation filtration system 4 is an integrated flocculation sedimentation device, integrating a fully automatic dosing device, flocculation reaction tank, baffle sedimentation tank, inclined tube sedimentation components, sludge sedimentation zone, and automatic sludge discharge pump. The flocculation sedimentation filtration system 4 is equipped with PA... The C and PAM dual-agent quantitative dosing module can perform pretreatment functions such as colloidal agglomeration, floc formation, and solid-liquid separation for coal-containing wastewater with high levels of fine coal powder suspended colloids and large turbidity fluctuations. The inlet of the equipment is sealed to the outlet of the coarse filtration interception system 3 through a pipeline to achieve continuous delivery of pretreated wastewater. The flocculation sedimentation filtration system 4 can be uniformly controlled by the electrical control system in the control room 2 to adjust the dosage, water retention time, sludge discharge cycle, and equipment operating load to ensure stable pretreated wastewater quality. The precision media filtration mechanism 5 is located inside the working workshop 1 and to the left rear of the flocculation sedimentation filtration system 4. The cleaning mechanism 8 is located inside the working workshop 1 and to the right front of the precision media filtration mechanism 5.The deep filtration system 10 is located inside the workshop 1, to the right rear of the precision media filtration mechanism 5. The deep filtration system 10 is electrically connected to the control room 2. The deep filtration system 10 uses an industrial-grade high-precision multi-media deep filtration unit, equipped with an ultra-fine quartz sand filter layer, precision filter cotton, and microporous interception filter media. It is suitable for deep purification of residual fine coal powder and trace colloidal impurities, featuring low resistance, high interception accuracy, anti-fouling, and reversible rinsing characteristics. It can further intercept trace amounts of fine suspended particles remaining in the water after precision filtration, ensuring that the effluent water quality consistently meets the plant's reuse standards. The deep filtration system 10 supports automatic start / stop, differential pressure monitoring, backwashing early warning, and fault self-diagnosis functions in the control room 2. The water collection tank 11 is equipped with… Located inside workshop 1 and to the right rear of the deep filtration system 10, the water collection tank 11 is electrically connected to the inlet of the water collection tank 11 via the outlet pipe of the deep filtration system 10. The water collection tank 11 is also electrically connected to the control room 2. The water collection tank 11 is a sealed water storage tank with integrated anti-corrosion and anti-seepage properties. It is made of industrial-grade anti-corrosion carbon steel lined with epoxy resin, which has the properties of being waterproof, leak-proof, and preventing secondary pollution. The water collection tank 11 is equipped with a liquid level sensor, a water quality monitoring probe, an overflow protection structure, and a sealed maintenance port. It is mainly used to collect and buffer the treated water that meets the standards after deep filtration system 10, balance the inlet and outlet flow pressure difference of the entire water treatment system, and avoid the flow fluctuation of the front-end equipment from affecting the stability of the reuse water supply. The water inlet of the water collection tank 11 is connected to a sealed pipeline. Connected to the outlet of the deep filtration system 10, the water collection tank 1 can provide real-time feedback of water tank level and water quality parameters to the electrical control system in the control room 2, realizing automated control of low-level water replenishment, high-level overflow protection, and constant-pressure water storage. The pump unit 12 is located inside the workshop 1 and on the outside right side of the water collection tank 11. The outlet of the water collection tank 11 is connected to the inlet pipe of the pump unit 12. The pump unit 12 is electrically connected to the control room 2. The pump unit 12 adopts a corrosion-resistant variable frequency booster pump unit, which consists of multiple pressure-stabilizing delivery pumps, variable frequency speed controllers, pressure sensors, check valves, and pressure-stabilizing pipeline components. It is suitable for continuous water supply conditions for wastewater reuse in thermal power plants and has the advantages of adjustable flow, stable pressure, low noise, and resistance to sewage corrosion. The water inlet of the pump unit 12 is connected to a dedicated water supply system. The pipeline is sealed and connected to the outlet of the water collection tank 11, which can stably extract and pressurize the qualified clean water inside the water collection tank 11. The pump set 12 can automatically adjust the operating frequency, number of pumps starting and stopping, and water supply pressure according to the water reuse demand, so as to realize constant pressure and constant flow automated water supply control. The return pipeline 13 is installed inside the upper part of the working workshop 1. The outlet pipe of the pump set 12 is connected to the return pipeline 13. The return pipeline 13 is made of industrial grade thickened anti-corrosion seamless steel pipe. The entire pipeline is treated with anti-rust, anti-corrosion, and wear-resistant treatment, which is suitable for the long-term wastewater transportation conditions in the factory area. The internal diameter of the pipeline matches the maximum water supply flow of the pump set 12. The pipeline is fixedly connected to the outlet of the pump set 12 through a sealing flange, which can stably deliver the qualified reclaimed water pressurized by the pump set 12 to various reuse points in the factory area.

[0019] As a preferred option, further, such as Figure 2As shown, the precision media filtration mechanism 5 includes: a mounting frame 51, a housing 52, a detachable filter component 6, a first delivery pump 53, a branch pipe 54, a second delivery pump 55, a collection pipe 56, and an auxiliary disassembly component 7. The mounting frame 51 is fixedly installed inside the work chamber 1 along the front-to-back direction. The housing 52 is fixedly installed inside the mounting frame 51 along the front-to-back direction. The housing 52 is made of thickened anti-corrosion steel plate, integrally bent and welded, and has an overall sealed box-type structure. Sufficient modular installation space is reserved inside the housing 52 for integration. Multiple sets of detachable filter components 6 are arranged; there are four detachable filter components 6, which are located at the four corners inside the outer shell 52 of the housing; the first transfer pump 53 is fixedly installed inside the mounting frame 51 and located on the front right side of the outer shell 52 of the housing. The inlet of the first transfer pump 53 is connected to the outlet pipe of the flocculation sedimentation filtration system 4. The first transfer pump 53 is electrically connected to the control room 2. The first transfer pump 53 is a corrosion-resistant and wear-resistant horizontal multi-stage centrifugal transfer pump, which is suitable for the working conditions of coal-containing wastewater containing fine coal powder and slightly abrasive water quality in thermal power plants. The inlet port of the transfer pump 53 is sealed to the outlet pipe of the flocculation sedimentation filtration system 4 via a high-pressure sealed pipeline, which can stably receive pretreated wastewater and provide continuous, stable, and quantitative influent delivery power for the downstream precision filtration system. The first transfer pump 53 supports control in the control room 2 to realize automatic start-up and shutdown, variable frequency flow regulation, overload protection, dry run protection, pressure monitoring, and operation fault feedback functions. It can automatically match the delivery flow rate according to the system influent load, and the influent pressure and flow rate are constant. The diversion pipeline 54 is installed inside the mounting frame 51 and located in the outer shell of the housing. At the front of the outside of 52, the inlet of the diversion pipe 54 is connected to the outlet of the first transfer pump 53. The diversion pipe 54 adopts an industrial-grade thickened anti-corrosion UPVC or stainless steel pressure-resistant pipe. The inlet end of the pipe is sealed and connected to the outlet port of the first transfer pump 53. The whole adopts a one-to-many balanced diversion structure. The pipe diameter has been hydraulically optimized. The diversion pipe 54 is used to evenly distribute the wastewater transported by the first transfer pump 53 to the interior of multiple sets of detachable filter components 6. It can balance the inlet water pressure and inlet water flow, and avoid the problem of uneven filtration and local blockage caused by excessive single-path load.The second delivery pump 55 is fixedly installed inside the mounting frame 51 and located on the outer right rear side of the housing 52. The outlet of the second delivery pump 55 is connected to the inlet pipe of the deep filtration system 10. The second delivery pump 55 is electrically connected to the control room 2. The second delivery pump 55 is a corrosion-resistant, variable frequency booster pump, suitable for conveying clean water after precision filtration. The outlet of the second delivery pump 55 is fixedly connected to the inlet pipe of the deep filtration system 10 through a sealed water delivery pipe, providing secondary pressurization power for the precision-filtered water, ensuring stable delivery of the water to the deep filtration system 10 for final fine filtration. The second delivery pump 55 can be controlled by the control system in the control room 2 to achieve variable frequency speed regulation, pressure closed-loop control, start / stop linkage, and fault self-check protection. The system can automatically adjust the delivery pressure and flow rate according to the downstream depth filtration load. The manifold 56 is installed inside the mounting frame 51 and located on the left rear side of the outer casing 52. The outlet of the manifold 56 is connected to the inlet pipe of the second delivery pump 55. The auxiliary disassembly component 7 is located on the top rear side of the mounting frame 51. The manifold 56 adopts a large-diameter corrosion-resistant integrated manifold structure. The overall design features multi-channel convergence, pressure stabilization, and rectification. The manifold 56 has the advantages of uniform convergence, stable pressure and flow, low hydraulic loss, and resistance to dirt accumulation and clogging. It can uniformly collect, rectify, and stabilize the water filtered by multiple sets of detachable filter components 6, eliminate the flow and pressure difference of multiple outlets, and ensure stable flow and balanced water pressure of the water entering the second delivery pump 55.

[0020] As a preferred option, further, such as Figure 3As shown, the detachable filter component 6 includes: a pipe housing 61, an electric door 62, a filter cartridge 63, and a fixed shaft 64. The pipe housing 61 is embedded and fixedly installed inside the housing housing 52 along the front-to-back direction. The front and rear ends of the pipe housing 61 extend out of the front and rear sides of the housing housing 52, respectively. The front inlet pipe of the pipe housing 61 is connected to the diversion pipe 54, and the rear outlet pipe of the pipe housing 61 is connected to the collection pipe 56. The pipe housing 61 adopts an industrial-grade stainless steel one-piece molded pipe structure, and the whole adopts a through-type straight structure. The front inlet pipe port of the pipe housing 61 is reserved to achieve a sealed connection with the diversion pipe 54, and the rear outlet pipe port is reserved to connect with the collection pipe 56. Pipeline 56 achieves sealed convergence and connection, serving as a sealed installation cavity for filter cartridge 63 and a wastewater flow channel. It effectively isolates external dust and debris, ensuring fully sealed wastewater filtration and preventing secondary water pollution. Simultaneously, it provides a regular and smooth limiting installation track for the disassembly, assembly, and sliding of filter cartridge 63. Two electric doors 62 are installed on the top of the front side of the outer surface of pipe housing 61, respectively. The electric doors 62 are electrically connected to the control room 2. The electric doors 62 adopt an industrial-grade waterproof and dustproof electrically tilting sealed door structure, equipped with a small, high-precision drive motor, reducer, sealing strip, and position detection sensor. The electric doors 62 can accept control... The automated commands of the control system in chamber 2 enable synchronous opening and closing, individual opening and closing, and opening limit control. Under normal conditions, it maintains a closed and sealed state, forming a tight seal at the front end of the pipe shell 61 to prevent water leakage and pressure loss during filtration. During equipment maintenance, it can automatically flip open, providing a clear working channel for the disassembly and removal of the internal filter cartridge 63. The filter cartridge 63 is detachably placed inside the pipe shell 61 along the front-to-back direction. The filter cartridge 63 adopts a modular cylindrical integrated filtration structure, with an external high-strength corrosion-resistant support frame and filter screen, and an internal multi-layer composite precision filter media. This filter media combines screening and adsorption purification performance and can be specifically adapted to various applications. To meet the filtration and purification needs of coal-containing wastewater from power plants containing fine coal powder and micro-suspended flocs, the filter cartridge 63 adopts a pull-out, non-locking installation method, which is convenient to disassemble and assemble and can be repeatedly cleaned and regenerated. There are two fixed shafts 64, which are respectively installed at the front and rear ends of the outer surface of the filter cartridge 63. The fixed shafts 64 serve as positioning supports and docking limit structures for the filter cartridge 63, and can respectively realize the coaxial positioning, sliding guidance, and clamping and fixing of the front and rear ends of the filter cartridge 63. This can effectively ensure the coaxiality and stability of the filter cartridge 63 during installation, disassembly, transportation, and cleaning, and provide a reliable positioning support base for the automated rotation cleaning operation of the filter cartridge 63.

[0021] As a preferred option, further, such as Figure 4 and Figure 5As shown, the auxiliary disassembly component 7 includes: a fixed frame 71, a dual-axis moving module 72, a lifting module 73, a cylinder shell 74, a limit pin 75, a clamp 76, an electric telescopic rod 77, a mounting base 78, a tank plate 79, a guide pulley 710, a belt 711, a tank shell 712, a connector 713, and a pusher 714; there are two fixed frames 71, which are fixedly installed on the left and right ends of the rear side of the upper surface of the mounting frame 51 in the front-rear direction; the dual-axis moving module 72 is fixedly installed on the top inner side of the two fixed frames 71, and the dual-axis moving module 72 is electrically connected to the control room 2. The dual-axis moving module 72 adopts an industrial-grade precision linear... The dual-axis translation module with guide rail has precise two-dimensional displacement adjustment functions in both left and right and forward and backward. The dual-axis moving module 72 integrates a servo drive motor, a precision ball screw transmission structure, a linear guide rail, and a displacement encoder. It can receive precise displacement commands from the control room 2 to realize automated point movement, positioning locking, displacement zeroing, and overload protection functions. It can perform adaptive alignment adjustment according to the installation coordinates of the filter cartridge 63 at different positions. The lifting module 73 is fixedly installed on the rear side of the moving end of the dual-axis moving module 72 in the vertical direction. The lifting module 73 is electrically connected to the control room 2. The lifting module 73 adopts a vertical precision electric lifting module, integrating a servo drive unit, a precision guide column, and a displacement encoder. The detection component can accept commands from the electrical control system of control room 2 to achieve automated lifting and lowering adjustment, precise height positioning, limit protection, and height closed-loop control. It can match the pipe shell 61 ports with different installation heights to achieve precise vertical alignment of the cylinder shell 74. The cylinder shell 74 is fixedly installed at the bottom of the lifting end of the lifting module 73. There are two limit pins 75, which are fixedly installed on the left and right ends of the outer surface of the cylinder shell 74. The limit pins 75 adopt a high-precision solid stainless steel pin structure and mainly play a mechanical limiting and guiding role, which can rigidly constrain the linear movement trajectory of the tank plate 79. There are two clamps 76. The clamp 76 is installed on the outer ends of the left and right limit pins 75 by rotating 180 degrees in the up and down direction. The clamp 76 serves as a single-sided fixing base point for the belt 711 and can rigidly lock and fix the end of the belt 711. The electric telescopic rod 77 is fixedly installed in the inner cavity of the cylinder shell 74 in the front and back direction. The telescopic end of the electric telescopic rod 77 extends out of the front side of the cylinder shell 74. The electric telescopic rod 77 is electrically connected to the control room 2. The electric telescopic rod 77 adopts a precision servo electric telescopic push rod structure. The telescopic stroke, telescopic speed and start / stop status can be controlled by the control system of the control room 2, and active linear drive power is provided. The mounting base 78 is fixedly installed on the front side of the telescopic end of the electric telescopic rod 77.There are two groove plates 79, which are fixedly installed at the left and right ends of the mounting base 78 along the front-rear direction. The inner cavities of the two groove plates 79 are respectively sleeved with the outer sides of the two limiting pins 75. The groove plates 79 can achieve linear reciprocating motion by means of the constraint of the limiting pins 75, and at the same time provide a rotating mounting base for the end guide pulleys 710. There are two sets of guide pulleys 710, with two pulleys in each set. The two sets of guide pulleys 710 are respectively rotated by a shaft to the front and rear ends of the outer surface of the left and right groove plates 79. The pulley 710 primarily serves to guide, reverse, and tension the belt 711, thus constraining its transmission trajectory. Two belts 711 are used, each sleeved around the outside of the left and right sets of guide pulleys 710. One side of each belt 711 passes through the inside of the left and right clamps 76 and is fixedly connected to their interiors. The belts 711 are high-strength, wear-resistant industrial synchronous transmission belts. The belts 711 achieve stable rotational transmission through the reversing action of the guide pulleys 710, converting linear driving force into external force. The synchronous push-pull power of the shell 712; the groove shell 712 is sleeved on the outside of the cylindrical shell 74 and the mounting base 78 in the front-to-back direction. The left and right sides of the groove shell 712 are respectively provided with through grooves, and the inside of the grooves is sleeved on the outside of the shafts of the left and right sets of guide pulleys 710; there are two connectors 713. The two connectors 713 are respectively rotated 180 degrees in the up-down direction and installed on the upper and lower sides of the left and right rear ends of the outer surfaces of the left and right groove shells 712. The inner sides of the two sets of connectors 713 are respectively fixedly connected to the other side of the upper and lower sides of the left and right belts 711. Two sets of connectors 713 are provided. Connectors 713 and clamps 76 form a bidirectional fixing structure, locking both ends of the belt 711 and directly applying the rotational traction force of the belt 711 to the tank shell 712, thus achieving power transmission. Two pushers 714 are provided, fixedly installed on the left and right sides of the front end of the outer surface of the tank shell 712 along the front-rear direction. As direct material pushing components, pushers 714 can move forward synchronously with the tank shell 712, engaging with the gap between the left and right sides of the rear fixed shaft 64 of the filter cylinder 63, applying a uniform and stable axial thrust.

[0022] As a preferred option, further, such as Figure 6 and Figure 7As shown, the cleaning mechanism 8 includes: a tank housing 81, a three-axis robotic arm 82, a clamping module 83, a cleaning fluid supply system 84, a track 85, a vertical frame 86, an electric roller seat 87, a track moving platform 88, a scissor lift frame 89, a high-pressure nozzle 810, and physical cleaning components 9. The tank housing 81 is fixedly installed inside the work workshop 1 along the front-rear direction and is located on the outside right front of the mounting frame 51. The tank housing 81 is electrically connected to the control room 2. The tank housing 81 is an integrated anti-corrosion sealed tank-type frame structure, and the tank housing 81 has a built-in electric sealing door. The three-axis robotic arm 82 is fixedly installed on the top rear side of the tank housing 81 by a bracket. The three-axis robotic arm 82 is electrically connected to the control room 2. The three-axis robotic arm 82 adopts industrial-grade high precision. This multi-degree-of-freedom servo robotic arm integrates a servo drive motor, precision reducer, displacement encoder, and attitude locking components. It features precise X, Y, and Z-axis displacement and point-to-point positioning. The three-axis robotic arm 82 is controlled by the control system in the control room 2, which uniformly regulates its motion trajectory, speed, positioning points, and start / stop status. It can adaptively adjust its working posture according to the installation / removal position of the filter cartridge 63, achieving fully automatic transfer and precise loading positioning of the filter cartridge 63. The clamping module 83 is fixedly installed at the bottom of the moving end of the three-axis robotic arm 82 and is electrically connected to the control room 2. The clamping module 83 is an industrial-grade automated precision clamping actuator, employing an electrically operated opening and closing clamping structure, equipped with a pressure sensing module and an anti-pinch damage buffer structure, and is adaptable to cylindrical filter cartridges. The external structure of the 63-axis robotic arm enables stable gripping and fixing. The clamping module 83 can receive electrical control commands from the control room 2 to achieve automatic opening and closing, clamping and locking, releasing and unloading, and clamping pressure monitoring. The cleaning fluid supply system 84 is installed on the external front side of the three-axis robotic arm 82. The cleaning fluid supply system 84 is electrically connected to the control room 2. The cleaning fluid supply system 84 is an integrated intelligent liquid supply device, integrating a cleaning fluid storage tank, a precision metering pump, a frequency conversion liquid supply component, a filtration and purification component, a pressure regulating valve, and multiple diversion pipelines. It can store, proportion, pressurize and deliver special cleaning media, and supports the supply of various cleaning media such as clean water and weakly alkaline cleaning fluid. The cleaning fluid supply system 84 can receive electrical control commands from the control room 2 and automatically adjust the liquid supply flow rate and pressure according to the cleaning conditions. In both start and stop states, it continuously provides a stable pressure cleaning medium to the high-pressure nozzle 810; the track 85 is fixedly installed in the middle of the bottom of the tank shell 81 in the front-to-back direction; there are two vertical frames 86, which are fixedly installed in the front and rear ends of the inner side of the track 85 in the up-down direction; there are two electric roller seats 87, which are fixedly installed at the top of the front and rear vertical frames 86 respectively. The electric roller seats 87 are electrically connected to the control room 2. The electric roller seats 87 adopt an electric drive limit roller assembly, which integrates a low-speed servo drive unit, wear-resistant support rollers and position detection module. It can be precisely engaged with the fixed shafts 64 at the front and rear ends of the filter cartridge 63 to realize the suspension support and free rotation adjustment of the filter cartridge 63;A track-mounted moving platform 88 is installed at the top of track 85 and is electrically connected to control room 2. The track-mounted moving platform 88 adopts a heavy-duty electric translational worktable structure, with a built-in servo drive motor and limit sensor components. It is movably mounted at the top of track 85 and can perform precise back-and-forth reciprocating translational movements along track 85. The track-mounted moving platform 88 can receive electrical control commands from control room 2 to control its movement stroke, movement speed, and start / stop points, achieving full-area coverage operation along the filter cartridge 63 axis. A scissor lift frame 89 is installed at the top of the track-mounted moving platform 88 and is electrically connected to control room 2. The scissor lift frame 89 is an industrial-grade electric scissor precision lifting platform, adopting a high-strength scissor arm hinge structure, and features adjustable lifting stroke, start / stop buffer, and limit self-locking performance. The scissor lift frame 89 can receive electrical control commands from control room 2 and, according to… The filter cartridge specifications and installation height are automatically adjusted to adjust the lifting height, achieving alignment between the high-pressure nozzle 810 and the physical cleaning component 9. Two high-pressure nozzles 810 are used, fixedly installed at the left and right ends of the lifting end of the scissor lift frame 89. The high-pressure nozzles 810 are connected to the liquid supply pipe of the cleaning fluid supply system 84 and electrically connected to the control room 2. The high-pressure nozzles 810 employ a high-pressure atomizing spray nozzle structure. The water inlet ports of the high-pressure nozzles 810 are connected to the liquid supply end of the cleaning fluid supply system 84 through pressure-resistant sealed pipes, allowing the pressurized cleaning fluid to be sprayed out in the form of a high-pressure jet. This enables high-pressure flushing and removal of coal dust, sludge, and stubborn impurities from the surface and inside the filter holes of the filter cartridge 63, achieving efficient water washing and purification. The physical cleaning component 9 is located at the rear of the lifting end of the scissor lift frame 89.

[0023] As a preferred option, further, such as Figure 8 and Figure 9As shown, the physical cleaning component 9 includes: a fixed base 91, an annular frame 92, a rotating seat 93, a connecting rod 94, a scraper 95, a first gear 96, a groove cylinder 97, a drive motor 98, a connecting pin 99, a horizontal frame 910, an inclined seat 911, a rotating shaft 912, a second gear 913, and a spherical groove seat 914. The fixed base 91 is fixedly installed on the lifting end of the scissor lift frame 89 and is located on the outer rear side of the two high-pressure nozzles 810. The annular frame 92 is fixedly installed on the top of the fixed base 91. There are several rotating seats 93, which are rotatably installed on the outer side of the annular frame 92 at circumferential intervals via bearings. The rotating seats 93 are evenly spaced along the outer circumferential direction of the annular frame 92. Rotational assembly is achieved through precision sealed bearings. These bearings are dustproof, waterproof, pulverization-proof, low-friction, and highly durable, making them suitable for cleaning in high-humidity, high-dust environments. The rotating seat 93 can rotate independently around its own axis, while simultaneously providing a hinged mounting point for the outer connecting rods 94. Several sets of connecting rods 94 are used, with two rods in each set. One end of each connecting rod 94 is rotatably mounted on the outer sides of several rotating seats 93 via bearings. The connecting rods 94 are L-shaped, and their L-shaped bending structure allows for a spatially staggered hinged layout. This enables parallelogram-like linkage of multiple mechanisms within a limited annular space, transmitting the rotational power of the rotating seat 93 and facilitating the connection of adjacent structures. Synchronous attitude transformation and angle linkage ensure the overall mechanical motion coordination and consistency; there are several scrapers 95, which are respectively mounted on the outer side of the other end of two adjacent connecting rods 94 via rotating shafts. The scrapers 95 are arc-shaped and are made of high-hardness wear-resistant arc-shaped alloy structure. The curvature of the scraper surface is adapted to the outer diameter of the filter cartridge 63, which can achieve contact without dead angles. It is specially used to scrape off coal powder clumps, stubborn sludge and hardened impurities attached to the outer wall of the filter cartridge. It has the advantages of large contact area, uniform cleaning effect and no damage to the filter cartridge and filter screen; the first gear 96 is fixedly mounted on the outside of the rotating seat 93 on the lower left side; the grooved cylinder 97 is rotatably mounted on the lower left side of the outer surface of the fixed base 91 via bearings. The axis of the slotted cylinder 97 extends to the right side of the fixed base 91. The slotted cylinder 97 adopts a hollow high-strength alloy cylinder structure and is rotatably assembled on the lower left outer surface of the fixed base 91 through a high-precision sealed bearing. As a power conversion cavity structure, the slotted cylinder 97 can carry the internal connecting pin 99 to complete the rotational power output, realize the torque conversion and power transmission of mechanical transmission, and provide a stable rotational carrier for the subsequent eccentric linkage structure. The drive motor 98 is fixedly installed on the outer right side of the fixed base 91. The rotating end of the drive motor 98 is fixedly connected to the axis of the slotted cylinder 97. The drive motor 98 is electrically connected to the control room 2. The drive motor 98 adopts an industrial-grade waterproof servo drive motor, which can stably drive the slotted cylinder 97 to perform fixed-axis rotational motion.The connecting pin 99 is fixedly installed in the inner cavity of the slotted cylinder 97 along the front-to-back direction. The connecting pin 99 rotates synchronously with the slotted cylinder 97, and can form a dynamic locking fit with the inner groove of the spherical slot seat 914, converting the rotational motion of the slotted cylinder 97 into the driving torque of the spherical slot seat 914, realizing the indirect and flexible transmission of power. The horizontal frame 910 is fixedly installed on the rear side of the outer surface of the fixed base 91 along the left-to-right direction. The inclined seat 911 is fixedly installed on the left side of the front surface of the horizontal frame 910 at an upward inclination. The rotating shaft 912 is rotatably installed on the inner side of the inclined seat 911 through a bearing. The bottom end of the rotating shaft 912 is tapered. The rotating shaft 912 serves as an intermediate power reversing transmission component, which can synchronously receive the power of the bottom spherical slot seat 914 and drive it. The top second gear 913 rotates, realizing vertical reversal of power and torque transmission; the second gear 913 is keyed to the top of the rotating shaft 912, and the second gear 913 meshes with the first gear 96; the spherical slot seat 914 is fixedly installed at the bottom end of the rotating shaft 912, and the spherical slot seat 914 is inserted into the inner cavity of the slotted cylinder 97, and the inner cavity of the spherical slot seat 914 is engaged with the outside of the connecting pin 99. The spherical slot seat 914 adopts an integrated spherical slotted alloy structure, and the annular groove opened on the inner side of the spherical slot seat 914 forms a movable engaging fit with the outside of the connecting pin 99. The spherical slot seat 914 can adapt to the circumferential motion of the slotted cylinder 97, and through the pin-slot engagement structure, the horizontal rotational motion of the slotted cylinder 97 is converted into the tilting rotational power of the rotating shaft 912.

[0024] The working principle is as follows: Step 1: The staff in the control room 2 completes the automated operation of the entire set of equipment. Through the built-in control system, the staff issues instructions to start the coarse filtration interception system 3, the flocculation sedimentation filtration system 4, the first transfer pump 53, the second transfer pump 55, the deep filtration system 10 and the pump group 12 in sequence. Each piece of equipment enters the standby operation state in an orderly manner. Step 2: Coal-containing wastewater generated during the production process of thermal power plants is collected centrally through the plant's pipeline network and flows into the coarse filtration interception system 3. The built-in booster pump of the coarse filtration interception system 3 transports the wastewater to the coarse filtration operation area. Large-particle solid impurities such as large coal slag, gravel, and plastic debris in the water are intercepted through mechanical interception, completing the first coarse filtration process of wastewater treatment. This effectively reduces the overall suspended solids content of the wastewater and avoids the problem of large particles clogging subsequent filtration equipment. Step 3: After coarse filtration, the wastewater is pressurized and transported by the effluent pump of the coarse filtration interception system 3 to the flocculation sedimentation filtration system 4. The built-in lift pump of the flocculation sedimentation filtration system 4 transports the wastewater to the flocculation reaction zone, where quantitative coagulant and coagulant aid are automatically added. Utilizing the adsorption bridging and charge neutralization effects of the agents, the suspended fine coal powder, colloidal particles, and tiny impurities in the water agglomerate and form large, dense flocs. Subsequently, the wastewater enters the sedimentation zone to complete static sludge-water separation. Most of the suspended pollutants settle with the flocs to form sludge, achieving preliminary water purification. Step 4: The supernatant after flocculation and sedimentation is pumped from the flocculation and sedimentation filtration system 4 to the precision media filtration mechanism 5. Through the pressurization and diversion action of the first delivery pump 53, the pressure-stabilized wastewater is delivered to the diversion pipeline 54. Utilizing the multi-channel diversion structure of the diversion pipeline 54, the wastewater is evenly distributed to the four detachable filter components 6. The wastewater flows smoothly into the inner cavity of the pipe shell 61 through the inlet on the front side of the pipe shell 61, passing through the built-in filter cylinder 63 at a uniform speed from front to back. Relying on the dual effects of porous sieving and physical adsorption of the filter cylinder 63, residual fine coal powder, unsettled micro flocs, and trace suspended impurities in the water are intercepted, further improving the cleanliness of the water. Step 5: The purified water filtered synchronously by multiple sets of detachable filter components 6 is uniformly collected into the collection pipeline 56 to complete the consolidation, and then pressurized and transported by the second delivery pump 55 to the deep filtration system 10. The high-precision filter media of the deep filtration system 10 completes the terminal fine filtration, removing the trace amount of fine suspended particles remaining in the water, so that the effluent quality fully meets the wastewater reuse standards of the thermal power plant area. Step 6: The qualified purified water is transported to the sealed storage tank 11 through the built-in pump of the deep filtration system 10 for temporary storage. When the plant needs to reuse wastewater, the pump unit 12 extracts the qualified purified water stored in the storage tank 11 and pressurizes it to the return pipeline 13. Through the pipeline network of the return pipeline 13, the purified water is transported to the coal yard spray dust suppression, coal conveyor bridge washing, plant ground cleaning and other miscellaneous systems to realize the closed-loop treatment and resource reuse of coal-containing wastewater. Step 7: During the long-term continuous operation of the device, the filter cylinder 63 inside the precision media filtration mechanism 5 will continuously trap coal powder and impurities, which may easily lead to filter hole blockage, decreased filtration efficiency, and increased inlet and outlet water pressure difference. At this time, the control room 2 controls the precision media filtration mechanism 5 to stop and enter the automated maintenance mode. The control room 2 has a built-in preset control program that automatically issues commands to start the electric hatch 62, dual-axis moving module 72, lifting module 73, electric telescopic rod 77, three-axis robotic arm 82 and clamping module 83 in sequence, and the equipment works in coordination. Step 8: The electric hatches 62 on the front and rear sides of the pipe shell 61 are started simultaneously. The hatches are opened by the built-in drive motor, which releases the sealing and blocking state of the two ends of the inner cavity of the pipe shell 61, and leaves a working channel for the removal of the filter cartridge 63. Step 9: The dual-axis moving module 72 is started, driving the mounted lifting module 73 to complete two-dimensional horizontal displacement in front and behind and left and right, moving to the rear of the detachable filter component 6 to be maintained. The lifting module 73 starts vertical lifting adjustment, driving the cylinder shell 74 to adjust to the appropriate height, so that the cylinder shell 74 and the rear end of the inner cavity of the pipe shell 61 are precisely aligned to ensure coaxiality of subsequent material pushing operations. Step 10: After alignment, the electric telescopic rod 77 extends forward, driving the mounting base 78 at the end to move linearly forward. The groove plate 79, fixed to both ends of the mounting base 78, moves synchronously, and the groove plate 79 maintains linear movement under the rigid limiting constraint of the limiting pins 75 on both sides. During the forward movement of the groove plate 79, the guide pulley 710 mounted at its end moves synchronously, driving the sleeved belts 711 on both sides to rotate in the opposite direction along the guide pulley 710. Since one end of the belt 711 is clamped... The device 76 is fixed at one end and the other end is fixed to the tank shell 712 via connector 713. Relying on the reversing traction transmission of belt 711, the tank shell 712 is driven to move forward synchronously along the central axis of the equipment. When the tank shell 712 moves forward, the pushers 714 on the left and right sides of its front end are driven to pass through the gap of the fixed shaft 64 at the rear end of the filter cylinder 63, and apply a uniform forward thrust to the end face of the filter cylinder 63. The clogged and failed filter cylinder 63 is smoothly pushed forward along the inner cavity of the pipe shell 61, completing the automatic unloading of the filter cylinder. Step 11: The three-axis robotic arm 82 starts multi-axis linkage adjustment, driving the clamping module 83 at the bottom to move precisely above the removed filter cylinder 63. The clamping module 83 completes the stable clamping and locking of the filter cylinder 63, realizing the automated grabbing and transfer of the waste filter cylinder 63, preparing for subsequent cleaning operations. Step 12: The pre-programmed system in control room 2 automatically starts the supporting equipment of cleaning mechanism 8, sequentially activating track moving platform 88, scissor lift frame 89, drive motor 98, cleaning fluid supply system 84, high pressure nozzle 810 and clamping module 83, to carry out fully automatic cleaning operation of filter cartridge 63. The three-axis robotic arm 82, in cooperation with clamping module 83, accurately transports the removed filter cartridge 63 to the area above the inner cavity of tank shell 81, completing the initial alignment of the cleaning station. Step 13: The track moving platform 88 moves horizontally along the track 85, driving the top-mounted scissor lift frame 89, physical cleaning component 9, and high-pressure nozzle 810 to the corresponding position at the end of the filter cylinder 63. The scissor lift frame 89 starts vertical lifting adjustment, driving the physical cleaning component 9 to adjust its height so that the annular frame 92 of the physical cleaning component 9 is at the same horizontal height as the filter cylinder 63. After the track moving platform 88 finely adjusts its position, the annular frame 92 is precisely fitted onto the outside of the filter cylinder 63, completing the precise positioning of the cleaning mechanism and the workpiece. Step 14: After positioning is completed, the three-axis robotic arm 82 drives the clamping module 83 to slowly descend, so that the fixed shafts 64 at the front and rear ends of the filter cylinder 63 are precisely engaged with the inner rollers of the electric roller seats 87 at the top of the front and rear vertical frames 86. The electric roller seats 87 are used to achieve the suspension support of the filter cylinder 63. During the placement process, the scissor lift frame 89 matches the height in real time to avoid equipment collision damage. After the placement is stable, the three-axis robotic arm 82 drives the clamping module 83 to reset and leave the filter cylinder working area. Step 15: The subsequent drive motor 98 starts, and the drive output end drives the groove cylinder 97 and the internal fixed connecting pin 99 to rotate synchronously. Through the snap-fit ​​cooperation between the connecting pin 99 and the spherical groove seat 914, the rotational power is transmitted to the rotating shaft 912, which drives the rotating shaft 912 to rotate inside the inclined seat 911, and synchronously drives the second gear 913 at the top to rotate. The second gear 913 meshes with the first gear 96 to drive the rotating seat 93 at the corresponding position to rotate around its own axis. Multiple rotating seats 93 evenly arranged in the circumference form multiple sets of linkage coupling mechanisms through the L-shaped connecting rod 94 and the arc-shaped scraper 95, forming a parallelogram linkage constraint structure. Relying on the synchronous transmission characteristics of the hinge kinematic pair, the power of the active rotating seat 93 is transmitted at the same speed to all the driven rotating seats 93, so that all rotating seats 93 can rotate synchronously in the same direction, thereby driving the connecting rod 94 to flip, so that the arc-shaped scraper 95 flips inward and fits against the outer wall surface of the filter cylinder 63, ensuring that there is no dead angle in the circumference. Step 16: Simultaneously, the cleaning fluid supply system 84 continuously delivers the prepared special cleaning fluid to the high-pressure nozzles 810 on both sides. After being pressurized by the nozzles, it forms a high-pressure water jet that is sprayed onto the inner and outer walls of the filter cylinder 63, quickly flushing away coal dust, sludge, and sticky impurities adhering to the inside of the filter holes. The track moving platform 88 moves back and forth at a uniform speed along the track 85, driving the high-pressure nozzles 810 and the overall physical cleaning component 9 to move along the entire axial direction of the filter cylinder 63. During the movement, the arc-shaped scraper 95, which is in contact with the outer wall, continuously rotates and scrapes in a circumferential direction. Combined with the flushing effect of the high-pressure water jet, it achieves the coordinated operation of mechanical scraping and high-pressure water washing. During the cleaning process, the motor inside the electric roller seat 87 drives the roller to rotate, and the fixed shaft 64 achieves synchronous axial rotation of the filter cylinder 63 under the action of friction. This achieves all-round, no-dead-angle removal of stubborn pollutants on the surface of the filter screen and inside the filter holes of the filter cylinder 63, completing the deep cleaning operation of the filter cylinder 63, so that the cleaned filter cylinder can be reused for filtration.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A zero-discharge treatment and reuse device for wastewater from thermal power plants, characterized in that, include: Workshop (1); The control room (2) is located inside the right side of the workshop (1); A coarse filtration interception system (3) is installed inside the workshop (1) and located in front of the control room (2) on the outside. The coarse filtration interception system (3) and the control room (2) are electrically connected. The flocculation sedimentation filtration system (4) is located inside the workshop (1) and on the outside left side of the coarse filtration interception system (3). The outlet pipe of the coarse filtration interception system (3) is connected to the inlet of the flocculation sedimentation filtration system (4). The flocculation sedimentation filtration system (4) is electrically connected to the control room (2). The precision media filtration mechanism (5) is installed inside the workshop (1) and located on the left rear side of the flocculation sedimentation filtration system (4); The cleaning mechanism (8) is located inside the workshop (1) and on the outside right front of the precision media filtration mechanism (5); A deep filtration system (10) is installed inside the workshop (1) and located to the right rear of the precision media filtration mechanism (5). The deep filtration system (10) is electrically connected to the control room (2). The water collection tank (11) is located inside the workshop (1) and to the right rear of the deep filtration system (10). The outlet pipe of the deep filtration system (10) is connected to the inlet of the water collection tank (11). The water collection tank (11) is electrically connected to the control room (2). Pump set (12) is located inside the workshop (1) and on the outside right side of the water collection tank (11). The outlet of the water collection tank (11) is connected to the inlet pipe of the pump set (12). The pump set (12) is electrically connected to the control room (2). The return pipe (13) is installed above the interior of the workshop (1), and the outlet pipe of the pump set (12) is connected to the return pipe (13).

2. The zero-discharge treatment and reuse device for wastewater from thermal power plants according to claim 1, characterized in that: The precision media filtration mechanism (5) includes: The mounting frame (51) is fixedly installed inside the workshop (1) in the front-to-back direction; The outer casing (52) is fixedly installed inside the mounting frame (51) along the front-to-back direction; The number of detachable filter components (6) is four, and the four detachable filter components (6) are arranged at the four corners inside the outer shell (52) of the box; The first delivery pump (53) is fixedly installed inside the mounting frame (51) and located on the outside right front of the housing shell (52). The inlet of the first delivery pump (53) is connected to the outlet pipe of the flocculation sedimentation filtration system (4). The first delivery pump (53) is electrically connected to the control room (2). The diversion pipe (54) is installed inside the mounting frame (51) and located in front of the outer shell (52). The inlet of the diversion pipe (54) is connected to the outlet of the first delivery pump (53). The second delivery pump (55) is fixedly installed inside the mounting frame (51) and located on the right rear side of the outer shell (52). The outlet of the second delivery pump (55) is connected to the inlet pipe of the depth filtration system (10). The second delivery pump (55) is electrically connected to the control room (2). The manifold (56) is installed inside the mounting frame (51) and located on the left rear side of the outer shell (52). The outlet of the manifold (56) is connected to the inlet of the second delivery pump (55). An auxiliary disassembly component (7) is provided on the top rear side of the mounting frame (51).

3. The zero-discharge treatment and reuse device for wastewater from thermal power plants according to claim 1, characterized in that: The removable filter component (6) includes: The pipe shell (61) is embedded and fixedly installed inside the housing shell (52) along the front and rear direction. The front and rear ends of the pipe shell (61) extend out of the front and rear sides of the housing shell (52) respectively. The inlet pipe of the pipe shell (61) is connected to the diversion pipe (54), and the outlet pipe of the pipe shell (61) is connected to the collection pipe (56). Electric hatch (62), there are two electric hatches (62), the two electric hatches (62) are respectively installed on the top of the front side of the outer surface of the pipe shell (61), and the electric hatches (62) are electrically connected to the control room (2); The filter cartridge (63) is detachably placed in the inner cavity of the pipe housing (61) in the front-to-back direction; there are two fixed shafts (64), which are respectively installed at the front and rear ends of the outer surface of the filter cartridge (63).

4. The zero-discharge treatment and reuse device for wastewater from thermal power plants according to claim 3, characterized in that: The auxiliary disassembly component (7) includes: The number of fixing brackets (71) is two, and the two fixing brackets (71) are respectively fixedly installed on the left and right ends of the rear side of the upper surface of the mounting frame (51) in the front-back direction; A dual-axis moving module (72) is fixedly installed on the top inner side of the two fixed frames (71) on the left and right sides, and the dual-axis moving module (72) is electrically connected to the control room (2); The lifting module (73) is fixedly installed on the rear side of the moving end of the dual-axis moving module (72) in the vertical direction, and the lifting module (73) is electrically connected to the control room (2).

5. The zero-discharge treatment and reuse device for wastewater from thermal power plants according to claim 4, characterized in that: The auxiliary disassembly component (7) also includes: The outer casing (74) is fixedly installed at the bottom of the lifting end of the lifting module (73); Limiting pins (75), there are two limiting pins (75), and the two limiting pins (75) are respectively fixedly installed on the left and right ends of the front surface of the outer shell of the cylinder (74); The clamp (76) is two in number, and the two clamps (76) are respectively rotated 180 degrees in the up and down direction and installed on the outer ends of the left and right limit pins (75); An electric telescopic rod (77) is fixedly installed in the inner cavity of the outer shell (74) in the front-rear direction. The telescopic end of the electric telescopic rod (77) extends out of the front side of the outer shell (74). The electric telescopic rod (77) is electrically connected to the control room (2). Mounting base (78) is fixedly installed on the front side of the telescopic end of the electric telescopic rod (77); The number of the two groove plates (79) is two. The two groove plates (79) are fixedly installed at the left and right ends of the mounting base (78) in the front-back direction, and the inner cavity of the groove of the two groove plates (79) is respectively sleeved with the outside of the two limit pins (75). Guide pulleys (710), there are two sets of guide pulleys (710), each set of guide pulleys (710) has two pulleys, and the two sets of guide pulleys (710) are respectively rotated to the front and rear ends of the outer surface of the left and right groove plates (79) by rotating shafts; The belt (711) has two belts (711). The two belts (711) are respectively sleeved on the outside of the left and right guide pulleys (710). The upper and lower sides of the two belts (711) pass through the inside of the left and right clamps (76) respectively and are fixedly connected to the inside of the clamps (76). The outer shell of the trough (712) is sleeved on the outside of the outer shell of the cylinder (74) and the mounting base (78) in the front-back direction. The left and right sides of the outer shell of the trough (712) are respectively provided with through troughs, and the inside of the trough is sleeved on the outside of the shaft of the left and right sets of guide pulleys (710). Connector (713), the number of connectors (713) is two, the two connectors (713) are respectively rotated 180 degrees in the up and down direction and installed on the upper and lower sides of the left and right rear ends of the outer surface of the left and right slot shells (712), and the inner sides of the two sets of connectors (713) are respectively fixedly connected to the other side of the upper and lower sides of the left and right belts (711). Pusher (714), there are two pushers (714), and the two pushers (714) are fixedly installed on the left and right sides of the front end of the outer surface of the tank shell (712) along the front-back direction.

6. The zero-discharge treatment and reuse device for wastewater from thermal power plants according to claim 5, characterized in that: The cleaning mechanism (8) includes: The tank shell (81) is fixedly installed inside the workshop (1) along the front-back direction and located on the outside right front of the mounting frame (51). The tank shell (81) and the control room (2) are electrically connected. A three-axis robotic arm (82) is fixedly mounted on the top rear side of the tank housing (81) by a bracket, and the three-axis robotic arm (82) is electrically connected to the control room (2); A clamping module (83) is fixedly installed at the bottom of the moving end of the three-axis robotic arm (82), and the clamping module (83) is electrically connected to the control room (2); A cleaning fluid supply system (84) is installed on the front side of the three-axis robotic arm (82), and the cleaning fluid supply system (84) is electrically connected to the control room (2).

7. The zero-discharge treatment and reuse device for wastewater from thermal power plants according to claim 6, characterized in that: The cleaning mechanism (8) also includes: The track (85) is fixedly installed in the middle of the bottom of the inner part of the outer shell (81) of the tank body along the front-back direction; The vertical frame (86) is two in number, and the two vertical frames (86) are respectively fixedly installed at the front and rear ends of the inner side of the track (85) in the vertical direction; Electric roller seat (87), there are two electric roller seats (87), the two electric roller seats (87) are respectively fixedly installed on the top of the front and rear vertical frames (86), and the electric roller seats (87) are electrically connected to the control room (2); A track moving platform (88) is installed at the top of the track (85), and the track moving platform (88) is electrically connected to the control room (2); A scissor lift (89) is installed on the top of the track moving platform (88), and the scissor lift (89) is electrically connected to the control room (2); High-pressure nozzle (810), there are two high-pressure nozzles (810), the two high-pressure nozzles (810) are respectively fixedly installed on the left and right ends of the lifting end of the scissor lift frame (89), the high-pressure nozzles (810) are connected to the liquid supply pipe of the cleaning liquid supply system (84), and the high-pressure nozzles (810) are electrically connected to the control room (2); The physical cleaning component (9) is located on the rear side of the lifting end of the scissor lift (89).

8. The zero-discharge treatment and reuse device for wastewater from thermal power plants according to claim 7, characterized in that: The physical cleaning component (9) includes: The fixed base (91) is fixedly installed on the lifting end of the scissor lift frame (89) and located on the outer rear side of the two high-pressure nozzles (810) on the left and right sides; A ring frame (92) is fixedly installed on top of the fixed base (91); Rotary seat (93), the number of which is several, and several of the rotating seats (93) are rotatably mounted on the outside of the annular frame (92) at circumferential intervals via bearings; Connecting rod (94), the number of connecting rods (94) is several groups, the number of connecting rods (94) in each group is two, one end of several connecting rods (94) is rotatably installed on the outer sides of several rotating seats (93) through bearings, and the shape of the connecting rod (94) is L-shaped; The scraper (95) is a plurality of scrapers (95), and the plurality of scrapers (95) are respectively mounted on the outer side of the other end of two adjacent connecting rods (94) by rotating shafts. The shape of the scraper (95) is arc-shaped. The first gear (96) is fixedly installed on the outside of the rotating seat (93) on the lower left side.

9. The zero-discharge treatment and reuse device for wastewater from thermal power plants according to claim 8, characterized in that: The physical cleaning component (9) also includes: The grooved cylinder (97) is rotatably mounted on the lower left side of the outer surface of the fixed base (91) via a bearing, and the axis of the grooved cylinder (97) extends to the right side of the fixed base (91). A drive motor (98) is fixedly installed on the outside right side of the fixed base (91). The rotating end of the drive motor (98) is fixedly connected to the shaft of the groove (97). The drive motor (98) is electrically connected to the control room (2). A connecting pin (99) is fixedly installed in the inner cavity of the groove (97) along the front-back direction; A horizontal frame (910) is fixedly installed on the rear side of the outer surface of the fixed base (91) in the left-right direction; An inclined seat (911) is fixedly installed at the left end of the front surface of the horizontal frame (910) at an upward angle; A rotating shaft (912) is rotatably mounted on the inner side of the inclined seat (911) via a bearing, and the bottom end of the rotating shaft (912) is tapered; The second gear (913) is keyed to the top of the shaft (912), and the second gear (913) meshes with the first gear (96); A spherical groove seat (914) is fixedly installed at the bottom end of the rotating shaft (912). The spherical groove seat (914) is inserted into the inner cavity of the groove cylinder (97), and the inner cavity of the spherical groove seat (914) is engaged with the outside of the connecting pin (99).

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