System for treating acidic wastewater by using tailing slurry

Abstract

The invention relates to the technical field of sewage treatment, and discloses a system for treating acidic wastewater with tailing slurry, the system comprises a preliminary screening assembly, a reaction assembly, a filtering assembly and a gas assembly, the preliminary screening assembly is arranged at the top of the reaction assembly, the filtering assembly is arranged at the bottom of the reaction assembly, the gas assembly is communicated with the filtering assembly, and the gas assembly is communicated with the reaction assembly. The reaction assembly comprises a reaction cover plate and a reaction stirring rod, the reaction cover plate is mounted at the top of the reaction assembly, a plurality of rotatably switchable filter screens are mounted in the middle of the reaction cover plate, the top of the reaction stirring rod is rotatably connected with the middle of the reaction cover plate, and a magnetic induction rotating plate and a magnetic induction block are mounted at the bottom of the reaction stirring rod; the problems that in the prior art, a traditional tailing slurry treatment method is low in treatment efficiency and high in energy consumption are solved, especially in the aspects of solid particle separation and acid wastewater treatment, the service life of a device is short due to corrosion of wastewater, and the environmental protection property and the resource recycling capacity of a wastewater treatment system are poor are solved.

Description

Technical Field

[0001] The invention patent relates to the technical field of sewage treatment, specifically, to a system for treating acidic wastewater with tailings slurry. Background Art

[0002] A Chinese patent with publication number CN221207124U discloses a tailings slurry treatment system, comprising a tailings pond, a vacuum pump, a cyclone and a thickening tank connected in sequence by pipelines. The thickening tank is also provided with a dosing system. The bottom of the cyclone is connected to a dry screen. The filtrate generated by the dry screen is transported to a sedimentation tank through a filtrate pipe. The supernatant generated in the sedimentation tank enters a filter through a pressure pump for filtration and is transported to a dosing system for water replenishment. The utility model uses a sedimentation tank and a filter arranged at the tail end of the dry screen of the tailings treatment system to process the filtrate generated by the dry screen and transport it to a stirring tank of a dosing system of a thickening tank for water replenishment, thereby avoiding the use of additional liquid in the thickening tank, which not only saves water resources, but also reduces the production load of subsequent cyclones and thickening tanks.

[0003] The Chinese patent with the publication number of CN106976919A discloses a multifunctional tailings slurry online monitoring pretreatment device, which is composed of a slurry inlet pump, a slurry inlet valve, a solid-liquid separator, a clean water valve, an internal support structure, a water outlet electric control switch valve, a flow meter, a PH detector, a U-shaped liquid storage pipe, a tailings recovery device, a cyanide electric control switch valve, a cyanide detector, a sewage valve, a slurry outlet pump, a slurry outlet electric control switch valve and a micro clean water pump and a PLC control module integrated and installed inside an electrical control cabinet. The present invention adopts the filtering principle to realize solid-liquid separation. The overflow filtration area at the top of the separator is large. The principle of heavy ore sinking and clear liquid floating is helpful for solid-liquid separation and increasing the service life of the filter cloth. The pressurized filtration ensures the continuous discharge speed of the clear liquid; the U-shaped tube combines the PH continuous detection system and the intermittent cyanide detection system to realize the multifunctional online detection function; the PLC automatic control system realizes the automatic control of the equipment and the centralized installation of the control cabinet makes the equipment centralized and integrated for easy installation and management.

[0004] However, traditional tailings slurry treatment methods face the problems of low treatment efficiency and high energy consumption, especially in the separation of solid particles and treatment of acidic wastewater. The service life of the equipment is short due to corrosion by wastewater, and the environmental protection and resource recovery capabilities of the wastewater treatment system are weak. Summary of the invention

[0005] The purpose of the present invention is to provide a system for treating acidic wastewater with tailings slurry, aiming to solve the problems of low treatment efficiency and high energy consumption faced by traditional tailings slurry treatment methods in the prior art, especially in terms of separating solid particles and treating acidic wastewater, the service life of the device is short due to corrosion by wastewater, and the environmental protection and resource recovery capabilities of the wastewater treatment system are weak.

[0006] The present invention is implemented in this way. A system for treating acidic wastewater with tailings slurry comprises a primary screening component, a reaction component, a filter component and a gas component. The primary screening component is placed on the top of the reaction component, the filter component is placed on the bottom of the reaction component, the gas component is connected to the filter component, the reaction component comprises a reaction cover plate and a reaction stirring rod, the reaction cover plate is installed on the top of the reaction component, a plurality of rotatable and switchable filter screens are installed in the middle of the reaction cover plate, the top of the reaction stirring rod is rotatably connected to the middle of the reaction cover plate, a magnetic sensing rotating plate and a magnetic sensing block are installed at the bottom of the reaction stirring rod, a filter screen support plate is installed on the top of the reaction component, a semicircular arc groove is opened on the filter screen support plate, a driving rotating block is installed on the top of the filter screen support plate, a material pushing scraper is installed on the driving rotating block, the material pushing scraper is driven by the driving rotating block to rotate intermittently, and the material is pushed to the semicircular arc groove to cooperate with the filter screen for filtering, and the plurality of filter screens are semicircular filter screens, which can all be rotated to one side so that the semicircular arc groove is open, and the filter residue falls at this time.

[0007] The magnetic sensitive block includes a stirring sleeve, a magnetic sensitive support rod, a magnetic sensitive slider, a magnetic sensitive coil and a stirring bracket. The stirring bracket is slidably connected to the bottom of the reaction component, the stirring sleeve is placed in the middle of the reaction stirring rod, the magnetic sensitive support rod is symmetrically fixed to both sides of the stirring sleeve, the magnetic sensitive slider is fixed to the non-fixed end of the magnetic sensitive support rod, the magnetic sensitive coil is symmetrically fixed to the top of the stirring bracket, the magnetic sensitive slider is slidably connected to the middle of the magnetic sensitive coil, the magnetic sensitive coil is connected to a power supply, and the magnetic sensitive slider generates a magnetic field when it reciprocates with the stirring bracket.

[0008] The stirring bracket also includes a worm, a main gear, two sub-gears and two fan-shaped worm wheels. The worm is rotatably connected to the bottom of the stirring bracket, the main gear is rotatably connected to the bottom of the reaction stirring rod, the two sub-gears are symmetrically placed at both ends of the main gear, the two sub-gears are meshed with the main gear, the two fan-shaped worm wheels are coaxially connected to the two sub-gears, and the two fan-shaped worm wheels are meshed with the worm.

[0009] Bubble racks are fixedly connected to both ends of the stirring bracket, and a plurality of bubble nozzles are distributed at intervals on the top of the bubble rack.

[0010] A plurality of semicircular arc grooves are provided in the middle of the reaction cover plate. The reaction cover plate comprises a turn rail, a turn sleeve, a cover plate turn frame and a stirring motor. The turn rail is fixedly connected to the bottom of the reaction cover plate. The turn sleeve is rotatably connected to the reaction stirring rod. The cover plate turn frame is fixedly connected to the turn sleeve. Filter screens with different filter hole diameters are detachably connected to the cover plate turn frame. The stirring motor is installed in the middle of the reaction stirring rod.

[0011] The primary screening assembly includes a primary screening bin, a primary screening coil, a primary screening rotating block, a primary screening swing rod and a primary screening push rod. A primary screening groove is provided at the bottom of the side of the primary screening bin. The top and bottom of the primary screening coil are slidably connected to the primary screening groove. The primary screening rotating block is rotatably connected to the bottom of the primary screening bin. The primary screening swing rod is fixedly connected to the primary screening rotating block. The primary screening push rod is slidably connected to one side of the primary screening swing rod.

[0012] The sieve is connected to the sieve frame by the spring, and the sieve frame is connected to the sieve slot by the spring, and the sieve is wound on the sieve reel, and the sieve outlet is fixedly connected to the sieve frame by the spring.

[0013] It also includes a pouring component, a dividing component and a drying component, the pouring component is placed at the bottom of the primary screening component, the dividing component is placed at the bottom of the pouring component, the drying component is placed at one end of the dividing component away from the pouring component, the drying component is connected to the reaction component through an air duct, and the air duct is connected to the bubble nozzle; a conveyor belt is installed inside the dividing component, a spray is installed inside the dividing component and placed on the top of the conveyor belt, a dividing track is fixedly connected to one end of the dividing component away from the pouring component, a dividing plate is slidably connected to the dividing track, and the dividing plate moves to the dividing track close to one end of the drying component and then flips over to unload.

[0014] The drying assembly includes a drying bin, a drying cover, a drying rotating rod and a heating tube. A drying rotating rod is installed on the side of the drying bin to connect the drying cover. When the drying cover is opened, it is placed at both ends of the drying bin. When the drying cover is closed, it is sealed on the top of the drying bin. The heating tube is fixed to the bottom of the drying bin.

[0015] It also includes a gas collecting bin, a total compressor and a gas component. The filter component includes a filter residue channel, a static bin and an adsorption bin. The filter residue channel and the adsorption bin are placed on both sides of the static bin. The gas component includes an air intake pipe, a gas reaction bin, a compressor body and a gas drying bin. The gas drying bin is placed at the bottom of the static bin. The gas drying bin is connected to the top of the static bin. Both ends of the gas reaction bin are respectively connected to the gas drying bin and the compressor body. The air intake pipe is connected to the total compressor and the gas collecting bin.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The design of the magnetic sensing block accelerates the separation of metal ions in sewage by generating a magnetic field, thereby improving the treatment efficiency. The attraction or repulsion of the magnetic field on metal ions helps the metal ions to aggregate or precipitate faster, thereby achieving a more efficient separation process. The replaceable filter screen provides the flexibility to treat different wastewater characteristics. Combined with the magnetic field, the movement and aggregation of metal ions can be more accurately controlled, achieving a finer separation and increasing the service life of the filter screen. The magnetic field of the magnetic sensing block reduces the use of chemical additives, reduces treatment costs and reduces environmental impact, while improving the sustainability of wastewater treatment. The introduction of the magnetic field enhances the adaptability of the system to different wastewater treatment scenarios, allowing the magnetic field strength and direction to be adjusted according to the wastewater composition and treatment requirements. The design of the stirring bracket not only achieves efficient power transmission of the stirring rod, but also combines with the magnetic field generated by the magnetic sensing block to promote the coagulation and sedimentation of the precipitate, improving the overall efficiency of wastewater treatment. The design of the primary screening component allows a continuous screening process, reduces the risk of material blockage, and combines with the magnetic field to more effectively separate large particles, providing a good foundation for subsequent metal ion separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a system for treating acidic wastewater with tailings slurry according to the present invention; Figure 2 It is a structural schematic diagram of a primary screening component in a system for treating acidic wastewater with tailings slurry according to the present invention; Figure 3 It is a structural schematic diagram of a reaction cover plate in a system for treating acidic wastewater with tailings slurry according to the present invention; Figure 4 It is a structural schematic diagram of a magnetic sensitive block in a system for treating acidic wastewater with tailings slurry according to the present invention; Figure 5 It is a schematic structural diagram of a filtering component in a system for treating acidic wastewater with tailings slurry according to the present invention; Figure 6 It is a schematic structural diagram of a gas component in a system for treating acidic wastewater with tailings slurry according to the present invention; Figure 7 It is a structural schematic diagram of a primary screen frame in a system for treating acidic wastewater with tailings slurry according to the present invention; Figure 8 yes Figure 7 A partial enlarged view of the A part Fig. 9 It is a structural schematic diagram of the top of a reaction component in a system for treating acidic wastewater with tailings slurry according to the present invention.

[0018] Reference numerals: 1. Primary screening component; 2. Material pouring component; 3. Material distribution component; 4. Drying component; 5. Reaction component; 6. Filter component; 7. Gas collecting bin; 8. Compression total unit; 9. Gas component; 10. Primary screening bin; 11. Primary screening roll net; 12. Primary screening rotating block; 13. Primary screening swing rod; 14. Primary screening push rod; 15. Conveyor belt; 16. Baffle slide; 17. Material distribution plate; 18. Material distribution track; 19. Drying bin; 20. Drying cover; 21. Drying rotating rod; 22. Heating tube; 23. Air guide tube; 24. Reaction cover; 25. Turning rail; 26. Rotating sleeve; 27. Cover rotating rack; 28. Filter screen; 29. ​​Stirring motor; 30. Reaction stirring rod; 31. Magnetic induction rotating plate; 32. Stirring sleeve; 33. Magnetic support rod; 34. Magnetic slider; 35. Magnetic coil; 36. Stirring bracket; 37. Worm; 38. Main gear; 39. Sub gear; 40. Fan-shaped worm gear; 41. Bubble rack; 42. Filter residue channel; 43. Standing bin; 44. Adsorption bin; 45. Inlet pipe; 46. Gas reaction bin; 47. Compressor body; 48. Gas drying bin; 49. Baffle bracket; 50. Baffle slide; 51. Primary screening frame; 52. Primary screening reel; 53. Primary screening scraper; 54. Screen clip strip; 55. Screen clip bracket; 56. Screen baffle strip; 57. Filter support plate; 58. Push scraper; 59. Driving rotor; 60. Semicircular arc groove. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0021] like Figure 1-9 As shown, the present invention provides a system for treating acidic wastewater with tailings slurry, comprising a primary screening component 1, a reaction component 5, a filter component 6 and a gas component 9, wherein the primary screening component 1 is disposed at the top of the reaction component 5, the filter component 6 is disposed at the bottom of the reaction component 5, the gas component 9 is connected to the filter component 6, the reaction component 5 comprises a reaction cover plate 24 and a reaction stirring rod 30, the reaction cover plate 24 is mounted on the top of the reaction component 5, a plurality of rotatable and switchable filter screens 28 are mounted in the middle of the reaction cover plate 24, the top of the reaction stirring rod 30 is rotatably connected to the middle of the reaction cover plate 24, and a magnetically sensitive transfer plate 31 and a magnetically sensitive block are mounted at the bottom of the reaction stirring rod 30.

[0022] The beneficial effect of the present invention is that the design of the magnetic sensing block accelerates the separation of metal ions in sewage by generating a magnetic field, thereby improving the treatment efficiency. The attraction or repulsion of the magnetic field on the metal ions helps the metal ions to aggregate or precipitate faster, thereby achieving a more efficient separation process. The replaceable filter 28 provides flexibility in treating different wastewater characteristics. Combined with the magnetic field, the movement and aggregation of metal ions can be more accurately controlled, achieving a finer separation, and increasing the service life of the filter 28.

[0023] A filter support plate 57 is installed on the top of the reaction component 5. The filter support plate 57 is provided with a semicircular slot 60. A driving block 59 is installed on the top of the filter support plate 57. A material pusher 58 is installed on the driving block 59. The material pusher 58 is driven by the driving block 59 to rotate intermittently, pushing the material to the semicircular slot 60 to cooperate with the filter 28 for filtration. Multiple filters 28 are semicircular filters, which can all be rotated to one side to open the semicircular slot 60, and the filter residue falls at this time. Continuous screening can reduce the risk of blockage, and the separation efficiency of large particles can be improved by combining magnetic field pretreatment. The modular design of the screen is easy to maintain and replace. The snap-on structure ensures the stability of the screen. The scraper system automatically cleans the screen surface to maintain screening efficiency. Metals in an ionic state usually refer to metal ions, which are not magnetic themselves and therefore cannot be directly separated by magnetic separation technology. However, magnetic separation technology is widely used in the field of water treatment, especially for removing magnetic or weakly magnetic particles in wastewater. This technology uses an external magnetic field to adsorb and separate magnetic substances, and has the advantages of fast separation speed, high efficiency, and no secondary pollution.

[0024] In order to separate non-magnetic ionic metals, magnetic seed adsorption-magnetic separation technology can be used. This technology involves adding a magnetic carrier with adsorption properties to a solution containing metal ions. The magnetic carrier will adsorb the metal ions, and then the magnetic carrier and the adsorbed metal ions are separated from the solution by an external magnetic field. The key to this method is to prepare specific magnetic species with excellent adsorption properties. These magnetic species can be added with specific functional substances or chemical groups on the surface of the magnetic species by chemical deposition, coprecipitation, hydrothermal method, coating and other methods to increase their adsorption capacity. When the present invention is used for wastewater treatment, a magnetic carrier will be added to separate non-magnetic ionic metals. Common magnetic materials include ferrites, metal magnetic nanoparticles (such as Fe3O4, γ-Fe2O3), magnetic hydrogels, magnetic fluids, etc.

[0025] The magnetic sensitive block includes a stirring sleeve 32, a magnetic sensitive support rod 33, a magnetic sensitive slider 34, a magnetic sensitive coil 35 and a stirring bracket 36. The stirring bracket 36 is slidably connected to the bottom of the reaction component 5. The stirring sleeve 32 is placed in the middle of the reaction stirring rod 30. The magnetic sensitive support rod 33 is symmetrically fixed on both sides of the stirring sleeve 32. The magnetic sensitive slider 34 is fixed to the non-fixed end of the magnetic sensitive support rod 33. The magnetic sensitive coil 35 is symmetrically fixed to the top of the stirring bracket 36. The magnetic sensitive slider 34 is slidably connected to the middle of the magnetic sensitive coil 35. The magnetic sensitive coil 35 is connected to a power supply. The magnetic sensitive slider 34 generates a magnetic field when it reciprocates with the stirring bracket 36.

[0026] The beneficial effect of the present invention is that the magnetic field of the magnetic sensitive block reduces the use of chemical additives, reduces treatment costs and reduces the impact on the environment, while improving the sustainability of wastewater treatment. The introduction of the magnetic field enhances the adaptability of the system to different wastewater treatment scenarios, allowing the magnetic field strength and direction to be adjusted according to the wastewater composition and treatment requirements.

[0027] The stirring bracket 36 also includes a worm 37, a main gear 38, two sub-gears 39 and two fan-shaped worm wheels 40. The worm 37 is rotatably connected to the bottom of the stirring bracket 36. The main gear 38 is rotatably connected to the bottom of the reaction stirring rod 30. The two sub-gears 39 are symmetrically placed at both ends of the main gear 38. The two sub-gears 39 are both meshed with the main gear 38. The two fan-shaped worm wheels 40 are coaxially connected to the two sub-gears 39 respectively, and the two fan-shaped worm wheels 40 are meshed with the worm 37.

[0028] The beneficial effect of the present invention is that the design of the stirring bracket 36 not only realizes efficient power transmission of the stirring rod, but also combines with the magnetic field generated by the magnetic sensing block to promote the coagulation and sedimentation of the precipitate, thereby improving the overall efficiency of wastewater treatment.

[0029] Bubble racks 41 are fixedly connected to both ends of the stirring bracket 36 , and a plurality of bubble nozzles are spaced apart on the top of the bubble rack 41 .

[0030] A plurality of semicircular arc through grooves 60 are provided in the middle of the reaction cover plate 24. The reaction cover plate 24 comprises a turn rail 25, a turn sleeve 26, a cover plate turn frame 27 and a stirring motor 29. The turn rail 25 is fixedly connected to the bottom of the reaction cover plate 24. The turn sleeve 26 is rotatably connected to the reaction stirring rod 30. The cover plate turn frame 27 is fixedly connected to the turn sleeve 26. Filter screens 28 with different filter hole diameters are detachably connected to the cover plate turn frame 27. The stirring motor 29 is installed in the middle of the reaction stirring rod 30.

[0031] The primary screening assembly 1 includes a primary screening bin 10, a primary screening coil 11, a primary screening rotary block 12, a primary screening swing rod 13 and a primary screening push rod 14. A primary screening groove is provided at the bottom of the side of the primary screening bin 10. The top and bottom of the primary screening coil 11 are slidably connected to the primary screening groove. The primary screening rotary block 12 is rotatably connected to the bottom of the primary screening bin 10. The primary screening swing rod 13 is fixedly connected to the primary screening swing block 12. The primary screening push rod 14 is slidably connected to one side of the primary screening swing rod 13.

[0032] The beneficial effect of the present invention is that the design of the primary screening component 1 allows a continuous screening process, reduces the risk of material blockage, and combined with the effect of the magnetic field, can more effectively separate large particles, providing a good foundation for subsequent metal ion separation.

[0033] The primary screening roll 11 includes a primary screening frame 51, a primary screening reel 52, a primary screening scraper 53, a screen card strip 54, a screen card frame 55, a screen baffle 56, a baffle bracket 49, a baffle slide 50 and a baffle slide 16. The top and bottom of the primary screening frame 51 are slidably connected to the primary screening slot, the primary screening reel 52 is rotatably connected to the middle of the primary screening frame 51, a screen is wound on the primary screening reel 52, a screen card strip 54 is fixedly connected to the screen outlet, the primary screening scraper 53 and the screen card frame 55 is fixedly connected to both sides of the primary screen frame 51, the primary screen scraper 53 is in contact with the screen, the screen baffle 56 is rotatably connected to the middle part of the screen card frame 55, the screen card bar 54 is clamped with the screen card frame 55 through the screen baffle 56, the baffle bracket 49 is fixedly connected to the outer side of the screen card frame 55, the baffle slide 16 is slidably connected to the baffle bracket 49, one end of the baffle slide rod 50 is fixedly connected to the baffle slide 16, and the non-fixed end of the baffle slide rod 50 is slidably connected to the baffle bracket 49.

[0034] The beneficial effect of the present invention is that the top and bottom of the primary screening frame 51 are slidably connected to the primary screening slot, providing stable and flexible support, ensuring the stability and adaptability of the screen during the screening process. The primary screening reel 52 is rotatably connected to the middle of the primary screening frame 51, allowing the screen to be wound and unfolded on the primary screening reel 52, facilitating the replacement and maintenance of the screen. Multiple primary screening frames 51 are connected in sequence in the screen card frame 55 through the screen card strip 54, and slide away from each other in the primary screening slot to pull the screen to unfold, close the primary screening slot, and perform the screening operation.

[0035] It also includes a pouring component 2, a dividing component 3 and a drying component 4. The pouring component 2 is placed at the bottom of the primary screening component 1, the dividing component 3 is placed at the bottom of the pouring component 2, and the drying component 4 is placed at the end of the dividing component 3 away from the pouring component 2. The drying component 4 is connected to the reaction component 5 through an air guide pipe 23, and the air guide pipe 23 is connected to the bubble nozzle; a conveyor belt 15 is installed inside the dividing component 3, a spray is installed inside the dividing component 3 and is placed on the top of the conveyor belt 15, a dividing track 18 is fixedly connected to the end of the dividing component 3 away from the pouring component 2, and a dividing plate 17 is slidably connected to the dividing track 18. The dividing plate 17 moves to the dividing track 18 close to the end of the drying component 4 and then flips over to unload.

[0036] The primary screening component 1 transfers the screened solid impurities to the material separation component 3. A conveyor belt 15 is installed inside the material separation component 3. The end of the conveyor belt 15 close to the primary screening component 1 is lower than the end of the original primary screening component 1. The conveyor belt 15 of the material separation component 3 pushes the solid impurities to the pouring component 2 for collection, and the liquid part enters the reaction component 5 through the pouring component 2 for reaction.

[0037] The beneficial effect of the present invention is that the material pouring component 2 ensures the smooth transfer of the tailings slurry and provides a continuous material flow for the separation of metal ions under the action of the magnetic field. The spray system and the conveyor belt 15 of the material distribution component 3 are combined with the magnetic field to more evenly distribute the tailings slurry, thereby improving the drying efficiency and product quality.

[0038] The drying component 4 includes a drying bin 19, a drying cover 20, a drying rotating rod 21 and a heating tube 22. A drying rotating rod 21 is installed on the side of the drying bin 19 to connect the drying cover 20. When the drying cover 20 is opened, it is placed at both ends of the drying bin 19. When the drying cover 20 is closed, it is sealed on the top of the drying bin 19. The heating tube 22 is fixedly connected to the bottom of the drying bin 19.

[0039] It also includes a gas collecting bin 7, a compressor main unit 8 and a gas component 9. The filter component 6 includes a filter residue channel 42, a static bin 43 and an adsorption bin 44. The filter residue channel 42 and the adsorption bin 44 are placed on both sides of the static bin 43. The gas component 9 includes an air inlet pipe 45, a gas reaction bin 46, a compressor body 47 and a gas drying bin 48. The gas drying bin 48 is placed at the bottom of the static bin 43. The gas drying bin 48 is connected to the top of the static bin 43. Both ends of the gas reaction bin 46 are respectively connected to the gas drying bin 48 and the compressor body 47. The air inlet pipe 45 is connected to the compressor main unit 8 and the gas collecting bin 7.

[0040] The beneficial effect of the present invention is that the design of the gas collection bin 7 and the gas assembly 9 helps to collect and store the gas generated during the tailings slurry treatment process, reducing pollution to the environment, and the magnetic field helps to separate the metal ions in the gas. The design of the filter residue channel 42 and the adsorption bin 44 allows for effective filtration and adsorption treatment of wastewater, and combined with the magnetic field effect, solid particles and harmful substances in the wastewater can be more effectively removed.

[0041] The tailings slurry acid wastewater treatment system provided by the present invention realizes the whole process of efficient and low-consumption acid wastewater treatment through the collaboration of multiple components (the treatment cycle is shortened to 4.5h, which is 60% more efficient than the traditional process). When the system is working, the primary screening component is first started: the primary screening rotating block 12 drives the primary screening swing rod 13 to swing at a rate of 15rpm, driving the primary screening push rod 14 to push the screen card frame 55 to slide along the primary screening slot, and multiple primary screening frames 51 are sequentially unfolded through the screen card strip 54 to form a continuous screen surface (the screen aperture is adjustable from 0.5 to 3mm), the primary screening reel 52 synchronously winds the screen at a speed of 0.2m / min, and the primary screening scraper 53 continuously scrapes off large particles of impurities (particle size>1mm) on the screen surface, and the slurry after the primary screening slides into the reaction component at an angle of 45°. At this time, the stirring bracket 36 in the reaction component drives the dual-axis differential stirring (main axis 30rpm / secondary axis 45rpm) through the worm 37, and at the same time, the magnetic induction coil 35 is passed with a 5A pulse current (pulse width 50ms / interval 200ms) to form a 0.5-1.5T gradient alternating magnetic field, and the magnetic seed (Fe3O4@SiO2-NH2) is automatically added at a ratio of 1:1000, and under the action of the magnetic field, metal ions such as Cu²+ are specifically adsorbed (adsorption capacity 180mg / g). The dynamic filter system automatically switches the filter combination every 5 minutes: the drive block 59 drives the push scraper 58 to push the flocculants to the semicircular slot 60, and three groups of semicircular filters (aperture 0.1 / 1 / 5mm) are used to achieve three-stage gradient filtration through the turn rail 25. The treated wastewater enters the filter assembly static bin 43 for three-stage sedimentation (0.5 / 1 / 2h), and at the same time, the bubble rack 41 injects micro-nano bubbles (diameter 50-200μm) containing ozone (concentration 8-15mg / L) at a flow rate of 5L / min to strengthen the oxidation reaction. The final filter residue is dried by magnetic-gas combination (80-120℃ hot air + microwave assistance) to reduce the moisture content to ≤15%, and the material distribution plate 17 automatically turns over and discharges every 5 minutes. The tail gas is catalytically oxidized (TiO2 / activated carbon composite catalyst) to achieve a VOCs removal rate of ≥98%. The system realizes intelligent control through online monitoring of pH (6.5-8.5) and ORP (200-400mV). The metal removal rate is increased to Cu²+96.5% and Zn²+94.2%, the operating cost is reduced to 0.45 yuan / ton, and the recycling rate of magnetic seeds reaches 85%, forming a complete technical chain from pretreatment to resource recovery.

[0042] The working principle of the present invention is: Magnetic field assisted separation: The magnetic field generated by the magnetic sensitive block attracts the magnetic or paramagnetic metal ions in the wastewater, accelerating the separation and precipitation of these ions.

[0043] Mechanical stirring and filtration: The reaction stirring rod 30 and the filter screen 28 work together to promote chemical reactions and uniform distribution of substances through mechanical stirring, while the filter screen 28 is used to intercept solid particles.

[0044] Multi-stage treatment process: The system is designed as a multi-stage treatment process, including primary screening, reaction, material pouring, material separation, drying, gas collection and filtration steps to ensure that the wastewater is fully treated.

[0045] Gas collection and purification: The gas generated during the treatment process is collected by the gas collection bin 7 and the gas component 9, and purified to reduce the impact on the environment.

[0046] Automated control: The coordinated work of the various parts of the system is regulated by the automated control system to meet the needs of different processing stages.

[0047] Detailed working steps: Primary screening stage: The tailings slurry first enters the primary screening component 1 and is initially screened through the primary screening mesh 11 to separate larger particles of solid matter.

[0048] Reaction stage: The tailings slurry after the initial screening flows into the reaction assembly 5, and the magnetic field generated by the magnetic sensing block begins to work, accelerating the separation of metal ions. The reaction stirring rod 30 and the stirring bracket 36 stir through the mechanical transmission system of the worm 37, the main gear 38, the sub-gear 39 and the fan-shaped worm gear 40 to ensure that the wastewater and the reactant are fully mixed.

[0049] Discharging stage: The reacted tailings slurry is transferred to the discharging component 3 through the discharging component 2 to realize the continuous transfer of materials.

[0050] Material distribution and spraying stage: the conveyor belt 15 inside the material distribution component 3 evenly distributes the tailings slurry, and the spraying system performs preliminary cleaning and wetting on the tailings slurry.

[0051] Drying stage: the tailings slurry is sent to the drying component 4 at the other end of the material distribution component 3, and is heated and dried by the heating pipe 22 to reduce the moisture content. After the moisture is evaporated, it is transferred to the next working step of crushing. The hot air generated by the drying is sprayed into the reaction component 5 through the air guide pipe 23 and bubbles. The generated bubbles float and filter the floating objects in the solution, and the toxic gases in the gas react with the potion in the reaction component 5 again to remove impurities.

[0052] Gas collection and purification stage: The gas generated during the treatment process enters the gas component 9 through the gas guide pipe 23, undergoes chemical reaction in the gas reaction chamber 46 and drying treatment in the gas drying chamber 48, and is finally compressed by the compressor body 47 for storage or reuse.

[0053] Filtration stage: The dried tailings slurry enters the filter assembly 6 and is filtered through the filter residue channel 42, the static chamber 43 and the adsorption chamber 44 to remove the remaining solid particles and harmful substances.

[0054] Final treatment: After multiple stages of treatment, the wastewater meets the discharge standards and can be safely discharged or reused; the solid waste is collected and subsequently treated.

[0055] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0056] As shown in the drawings, a preferred embodiment of the present invention is provided.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for treating acidic wastewater with tailings slurry, characterized in that: The invention comprises a primary screening component (1), a reaction component (5), a filtering component (6) and a gas component (9), wherein the primary screening component (1) is arranged at the top of the reaction component (5), the filtering component (6) is arranged at the bottom of the reaction component (5), the gas component (9) is connected to the filtering component (6), the reaction component (5) comprises a reaction cover plate (24) and a reaction stirring rod (30), the reaction cover plate (24) is installed at the top of the reaction component (5), a plurality of rotatable and switchable filter screens (28) are installed in the middle of the reaction cover plate (24), the top of the reaction stirring rod (30) is rotatably connected to the middle of the reaction cover plate (24), and the reaction stirring rod (30) is connected to the reaction cover plate (24). A magnetically sensitive rotating plate (31) and a magnetically sensitive block are installed at the bottom of the reaction component (5), a filter support plate (57) is installed at the top of the reaction component (5), the filter support plate (57) is provided with a semicircular arc groove (60), a driving rotating block (59) is installed at the top of the filter support plate (57), a material pushing scraper (58) is installed on the driving rotating block (59), the material pushing scraper (58) is driven by the driving rotating block (59) to rotate intermittently, and pushes the material to the semicircular arc groove (60) to cooperate with the filter screen (28) for filtering, and the plurality of the filter screens (28) are semicircular filter screens (28), which can all be rotated to one side so that the semicircular arc groove (60) is opened, and the filter residue falls at this time.

2. A system for treating acidic wastewater with tailings slurry according to claim 1, characterized in that: The magnetic sensitive block comprises a stirring sleeve (32), a magnetic sensitive support rod (33), a magnetic sensitive slider (34), a magnetic sensitive coil (35) and a stirring bracket (36); the stirring bracket (36) is slidably connected to the bottom of the reaction component (5); the stirring sleeve (32) is placed in the middle of the reaction stirring rod (30); the magnetic sensitive support rod (33) is symmetrically fixed to both sides of the stirring sleeve (32); the magnetic sensitive slider (34) is fixed to the non-fixed end of the magnetic sensitive support rod (33); the magnetic sensitive coil (35) is symmetrically fixed to the top of the stirring bracket (36); the magnetic sensitive slider (34) is slidably connected to the middle of the magnetic sensitive coil (35); a power supply is connected to the inside of the magnetic sensitive coil (35); and the magnetic sensitive slider (34) generates a magnetic field when it reciprocates with the stirring bracket (36).

3. A system for treating acidic wastewater with tailings slurry according to claim 2, characterized in that: The stirring support (36) further comprises a worm (37), a main gear (38), two sub-gears (39) and two fan-shaped worm wheels (40); the worm (37) is rotatably connected to the bottom of the stirring support (36); the main gear (38) is rotatably connected to the bottom of the reaction stirring rod (30); the two sub-gears (39) are symmetrically arranged at both ends of the main gear (38); the two sub-gears (39) are meshed with the main gear (38); the two fan-shaped worm wheels (40) are coaxially connected to the two sub-gears (39) respectively; and the two fan-shaped worm wheels (40) are meshed with the worm (37).

4. A system for treating acidic wastewater with tailings slurry according to claim 3, characterized in that: Both ends of the stirring bracket (36) are fixedly connected to a bubble frame (41), and a plurality of bubble nozzles are spaced apart on the top of the bubble frame (41).

5. A system for treating acidic wastewater with tailings slurry according to claim 4, characterized in that: A plurality of semicircular arc through grooves (60) are provided in the middle of the reaction cover plate (24). The reaction cover plate (24) comprises a turn rail (25), a turn sleeve (26), a cover plate turn frame (27) and a stirring motor (29). The turn rail (25) is fixedly connected to the bottom of the reaction cover plate (24). The turn sleeve (26) is rotatably connected to a reaction stirring rod (30). The cover plate turn frame (27) is fixedly connected to the turn sleeve (26). Filter screens (28) with different filter hole diameters are detachably connected to the cover plate turn frame (27). The stirring motor (29) is installed in the middle of the reaction stirring rod (30).

6. A system for treating acidic wastewater with tailings slurry according to claim 5, characterized in that: The primary screening assembly (1) comprises a primary screening bin (10), a primary screening coil (11), a primary screening rotating block (12), a primary screening swing rod (13) and a primary screening push rod (14); a primary screening groove is provided at the bottom of a side of the primary screening bin (10); the top and bottom of the primary screening coil (11) are slidably connected to the primary screening groove; the primary screening rotating block (12) is rotatably connected to the bottom of the primary screening bin (10); the primary screening swing rod (13) is fixedly connected to the primary screening rotating block (12); and the primary screening push rod (14) is slidably connected to one side of the primary screening swing rod (13).

7. A system for treating acidic wastewater with tailings slurry according to claim 6, characterized in that: The primary screening mesh roll (11) comprises a primary screening mesh frame (51), a primary screening reel (52), a primary screening scraper (53), a screen mesh clip (54), a screen mesh clip frame (55), a screen mesh baffle (56), a baffle bracket (49), a baffle slide bar (50) and a baffle slide plate (16); the top and bottom of the primary screening mesh frame (51) are slidably connected to the primary screening slot; the primary screening reel (52) is rotatably connected to the middle of the primary screening mesh frame (51); a screen mesh is wound on the primary screening reel (52); a screen mesh clip (54) is fixedly connected to the screen mesh outlet end; the primary screening scraper (53) and the screen mesh clip frame (55) are connected to the primary screening reel (52); The primary screening scraper (53) is fixedly connected to both sides of the primary screening frame (51), the primary screening scraper (53) is in contact with the screen, the screen baffle (56) is rotatably connected to the middle of the screen clamp (55), the screen clamp (54) is clamped with the screen clamp (55) through the screen baffle (56), the baffle bracket (49) is fixedly connected to the outer side of the screen clamp (55), the baffle slide (16) is slidably connected to the baffle bracket (49), one end of the baffle slide rod (50) is fixedly connected to the baffle slide rod (16), and the non-fixed end of the baffle slide rod (50) is slidably connected to the baffle bracket (49).

8. The system for treating acidic wastewater with tailings slurry according to claim 7, characterized in that: The invention also comprises a pouring assembly (2), a dividing assembly (3) and a drying assembly (4), wherein the pouring assembly (2) is arranged at the bottom of the primary screening assembly (1), the dividing assembly (3) is arranged at the bottom of the pouring assembly (2), and the drying assembly (4) is arranged at one end of the dividing assembly (3) away from the pouring assembly (2); the drying assembly (4) is connected to the reaction assembly (5) via an air guide pipe (23), and the air guide pipe (23) is connected to a bubble nozzle; a conveyor belt (15) is installed inside the dividing assembly (3), a spray is installed inside the dividing assembly (3) and is arranged on the top of the conveyor belt (15), a dividing track (18) is fixedly connected to one end of the dividing assembly (3) away from the pouring assembly (2), a dividing plate (17) is slidably connected to the dividing track (18), and the dividing plate (17) is turned over and discharged after moving to the dividing track (18) close to one end of the drying assembly (4) to discharge the materials.

9. A system for treating acidic wastewater with tailings slurry according to claim 8, characterized in that: The drying assembly (4) comprises a drying bin (19), a drying cover plate (20), a drying rotating rod (21) and a heating tube (22); a drying rotating rod (21) connected to the drying cover plate (20) is installed on the side of the drying bin (19); the drying cover plate (20) is placed at both ends of the drying bin (19) when opened; the drying cover plate (20) is closed and sealed on the top of the drying bin (19); and the heating tube (22) is fixedly connected to the bottom of the drying bin (19).

10. A system for treating acidic wastewater with tailings slurry according to claim 9, characterized in that: It also includes a gas collecting bin (7), a compressor main unit (8) and a gas component (9). The filter component (6) includes a filter residue channel (42), a static bin (43) and an adsorption bin (44). The filter residue channel (42) and the adsorption bin (44) are arranged on both sides of the static bin (43). The gas component (9) includes an air inlet pipe (45), a gas reaction bin (46), a compressor body (47) and a gas drying bin (48). The gas drying bin (48) is arranged at the bottom of the static bin (43). The gas drying bin (48) is connected to the top of the static bin (43). The two ends of the gas reaction bin (46) are respectively connected to the gas drying bin (48) and the compressor body (47). The air inlet pipe (45) is connected to the compressor main unit (8) and the gas collecting bin (7).

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