Multistage treatment device for copper-containing wastewater for resource recovery

Abstract

The present application relates to wastewater treatment technical field, specifically to a kind of resource recovery with copper-containing wastewater multistage processing device, comprising: processing base;With preliminary filtration structure is assembled on, and with the neutralization structure connected with preliminary filtration structure;The neutralization structure includes neutralization tank, and the inside vertical seal movable of neutralization tank is provided with sealing disc, the vertical tooth plate is fixedly installed at the bottom end of sealing disc, and the vertical tooth plate is engaged with straight gear, spring is assembled between the sealing disc and neutralization tank;The neutralization structure is connected with the precipitation structure of copper-containing wastewater precipitation treatment.This application is combined design in flocculation tank and sedimentation tank, through adding flocculating agent to make copper-containing wastewater flocculation precipitation, and can be discharged to drying box after sedimentation flocculation copper-containing wastewater, while still being able to discharge the sediment in sedimentation pipe, realizes the effective separation of different state material, helps to improve the purity and efficiency of copper recovery.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, in particular to a multi-stage treatment device for copper-containing wastewater for resource recovery. BACKGROUND

[0002] The main methods for treating nickel plating wastewater at home and abroad are chemical method, membrane method and ion exchange method. According to the requirements of clean production, the utilization rate of metal resources and water saving rate of electroplating enterprises are strictly required. It is the basic requirement of electroplating wastewater treatment to effectively recover heavy metals and recycle wastewater. (1) Chemical method: Some electroplating enterprises still use chemical method to treat copper plating wastewater. Chemical treatment method is to add sodium hydroxide or lime milk (calcium hydroxide) to copper-containing wastewater, adjust the pH of wastewater to 8-9, and then add flocculants to make copper in wastewater precipitate in the form of sludge. In order to further reduce the content of copper ions in wastewater, heavy metal capture agent (polysulfide) is also needed. Therefore, the copper sludge generated by chemical treatment method cannot be directly reused in plating tank, but sent to sludge recycling enterprises for treatment. Due to the increasingly strict management of solid waste transportation and treatment, the cost of copper recovery by this method is high. Due to the characteristics of electroplating wastewater, the concentration and discharge amount of various wastewater are unstable, and the concentration and flow of controlled substances in wastewater change greatly. Even if the heavy metals in wastewater can be completely removed by chemicals in theory, it is difficult to track the concentration and flow of pollutants in time due to the current detection technology, so the amount of chemicals cannot be added in time to follow the changes of the concentration and amount of controlled substances, resulting in either non-compliance of effluent or excessive chemicals, which increases the operation cost. Therefore, the problem of using single chemical method to treat electroplating wastewater is that it is difficult to achieve stable and standard treatment. Therefore, chemical method is gradually replaced by other treatment methods. (2) Ion exchange method: Ion exchange method can directly recover copper from low-concentration copper-containing wastewater and ensure that the copper ion content in effluent meets the standard. The saturated resin can be regenerated to obtain liquid copper sulfate solution containing 20-60 g / L of copper, and the wastewater after copper extraction can be treated by membrane or ion exchange resin to obtain pure water for return to production line. However, according to the technical characteristics of copper plating, the temperature of copper plating tank is low, and the water brought in by the previous process is greater than the evaporation amount, so the copper sulfate solution obtained by ion exchange method cannot be directly returned to the copper plating tank. In most cases, the copper sulfate recovery liquid obtained by ion exchange method is still treated by chemical method to become copper-containing sludge or outsourced. In addition, when treating copper-containing wastewater with ion exchange resin, the saturated resin needs to be treated with a large amount of acid / alkali and a large amount of water to clean the resin, so the treatment cost is also high. (3) Membrane method: Membrane method is widely used in electroplating and PCB enterprises to recover nickel and wastewater from nickel plating wastewater. A process and device for recovering electrolytic copper from copper-containing wastewater are disclosed in Chinese patent (authorized publication number CN104773887B). The patent discloses a process and device for recovering electrolytic copper from copper-containing wastewater. Through the process of removing suspended solids and part of organic matter by pretreatment, ultrafiltration treatment, nanofiltration membrane interception and concentration of copper sulfate, reverse osmosis membrane recovery of wastewater and acid, and cyclone electrolysis, electrolytic copper is produced.The electrolytic copper recovery rate reaches 90%, the copper purity is > 99.95%, meanwhile, the wastewater recovery rate is > 90%, the free sulfuric acid recovery rate in the wastewater is > 90%, the resource recovery rate is high, and the economic benefit is good; the process flow of the combined adsorption resin-ultrafiltration membrane-acid stable nanofiltration membrane-high desalination rate reverse osmosis membrane is adopted, compared with other membrane recovery systems, the performance and service life of the membrane can be maintained for a long time; automatic control is realized, and the stable operation of the wastewater treatment system and the quality of the recovered materials are ensured. The application is suitable for the recovery of copper in copper-containing wastewater in the electroplating industry, the electronic industry, the metallurgical industry and other industrial wastewater containing copper. The patent technology solves the problem that the membrane technology is rarely used to recover copper in copper plating wastewater, one of the reasons is that the concentrated solution recovered by the membrane method is difficult to remove impurities, causing harmful impurities to accumulate in the tank solution, so it cannot be directly returned to the plating tank for use, and the second reason is that the concentrated copper sulfate solution obtained by the membrane method for recovering acid copper plating wastewater cannot be directly returned to the copper plating tank for use, which is the same as the ion exchange method.

[0003] However, in the prior art, the copper-containing wastewater cannot be automatically discharged and treated during flocculation and neutralization of pH and alkalinity in multi-stage treatment, and the wastewater treatment can only be performed once when the neutralizing additive is added, so it is necessary to solve the problems of continuous treatment of copper-containing wastewater and automatic discharge of flocculation precipitates in the prior art.

[0004] Therefore, a resource recovery copper-containing wastewater multi-stage treatment device is provided by those skilled in the art to solve the problems in the background art. SUMMARY

[0005] To solve the above technical problems, the present application provides:

[0006] A resource recovery copper-containing wastewater multi-stage treatment device, comprising:

[0007] A treatment machine base is provided with a preliminary filtration structure and a neutralization structure connected with the preliminary filtration structure.

[0008] The neutralization structure comprises a neutralization tank, a sealing disc is vertically and sealingly movably arranged inside the neutralization tank, a vertical tooth plate is fixedly installed at the bottom end of the sealing disc, a spur gear is engaged with the vertical tooth plate, and a spring is arranged between the sealing disc and the neutralization tank.

[0009] The neutralization structure is connected with a precipitation structure for precipitation treatment of the copper-containing wastewater.

[0010] Preferably, a support frame is fixed to the outer wall of the neutralization tank, and the neutralization tank is fixedly installed on the treatment machine base through the support frame.

[0011] The inner wall of the top of the neutralizing tank is rotatably provided with a transmission rod, the bottom end of the transmission rod is fixedly provided with a heating rod, the outer walls of the two sides of the heating rod are fixedly provided with limiting rods, and the heating rod is slidably sleeved with a mixing frame located on the inner side of the neutralizing tank through the outer walls of the limiting rods.

[0012] The outer wall of the top end of the transmission rod is fixedly provided with a pulley one.

[0013] The outer walls of the bottom ends of the heating rod and the limiting rods are slidably sleeved with an inner shaft rod rotatably arranged on the inner wall of the vertical tooth plate.

[0014] Preferably, the bottom wall of the neutralizing tank is fixedly provided with a frame bottom bracket, and the frame bottom bracket is provided with a groove in which the vertical tooth plate extends and slides.

[0015] The straight gear is rotatably arranged on the inner side of the frame bottom bracket, one end of the straight gear is rotatably arranged on the inner side of the frame bottom bracket, and the other end of the straight gear is rotatably arranged on the inner side of the frame bottom bracket.

[0016] Preferably, one end of the driven rod is fixedly provided with a worm two, and the worm two is engaged with a worm wheel two.

[0017] The top side of the neutralizing tank is provided with a drainage groove, an electromagnetic valve is arranged on the drainage groove, and a water level sensor is arranged on the inner wall of the neutralizing tank.

[0018] Preferably, the precipitation structure comprises a flocculation tank connected with the drainage groove, three precipitation pipes are sealingly arranged on the bottom of the flocculation tank, a precipitation tank is arranged at the bottom end of each of the precipitation pipes, a sealing tank is arranged outside the precipitation tank, and the precipitation tank is rotatably arranged in the sealing tank.

[0019] The precipitation tank is provided with four abutting holes, and a precipitation cylinder is fixedly arranged in each of the abutting holes.

[0020] Preferably, a top square frame is fixedly arranged at the top end of the sealing tank, a bottom frame is fixedly arranged on the bottom of the sealing tank, and a drive rod is rotatably arranged in the top square frame and penetrates through the outer sides of the flocculation tank, the precipitation tank and the bottom frame.

[0021] The outer wall of the bottom end of the drive rod is fixedly provided with a worm wheel two and a pulley two, and the top end of the drive rod is fixedly provided with a pulley four and a pulley five.

[0022] Preferably, a precipitation discharge pipe is fixedly arranged on the bottom wall of the sealing tank below each of the precipitation cylinders, a discharging rod is rotatably arranged in the precipitation discharge pipe, and a discharging spiral is fixedly arranged on the inner wall of the precipitation discharge pipe and closely arranged on the outer wall of the discharging rod.

[0023] The bottom end of the blanking rod is sealed and rotates through the outside of the sediment discharge pipe, and is fixedly provided with a third pulley, and a belt is arranged between the third pulley and the second pulley.

[0024] Preferably, the bottom of the sediment tank is movably provided with a bottom sealing frame corresponding to the position of the sediment tank, and a plurality of air cylinders one are arranged between the bottom sealing frame and the bottom frame.

[0025] The top of the sediment tank is movably provided with a top sealing frame sleeved on the outer wall of the sediment pipe, and a sealing frame plate is arranged above the top sealing frame and fixed on the outer wall of the sediment pipe, and an air cylinder two is arranged between the sealing frame plate and the top sealing frame.

[0026] Preferably, the outer wall of the sediment tank is fixedly provided with a helical gear ring, the helical gear ring is engaged with a helical gear, and the helical gear is connected with a servo motor two.

[0027] Preferably, the top side of the flocculation tank is throughly connected with a floating discharge pipe, and the inside of the flocculation tank is provided with a discharge frame fixedly installed on the outer wall of the driving rod.

[0028] The bottom end of the sediment discharge pipe is throughly connected with a drying tank, and a stirring frame is rotatably installed in the inside of the drying tank, the top end of the stirring frame is rotatably through the outside of the drying tank, and a sixth pulley is fixedly arranged.

[0029] The bottom end of the drying tank is throughly connected with a discharge pipe.

[0030] The technical effects and advantages of the present application are as follows:

[0031] In the present application, the combination design of the flocculation tank and the sediment tank can make the copper-containing wastewater flocculate and precipitate by adding a flocculating agent, and can discharge the flocculated copper-containing wastewater to the drying tank after precipitation, and can also discharge the precipitates in the sediment pipe, realizing effective separation of different state materials, and helping to improve the purity and efficiency of copper recovery.

[0032] In the present application, accurate neutralization and monitoring are realized through a series of mechanical structures such as sealing discs and vertical tooth plates and the linkage of the heating rod and the mixing frame, so that the copper-containing wastewater can be fully stirred and mixed after adding acid-base additives, realizing acid-base neutralization and temperature adjustment. At the same time, the installed pH sensor and temperature sensor can detect the pH value and temperature value of the wastewater in real time, ensuring accurate control of the neutralization process and creating a suitable chemical environment for subsequent processing.

[0033] In the present application, stable transmission and driving are realized through transmission structures such as pulleys, belts, gears, worms and worm gears between components, so that the rotation of the driving rod can not only discharge flocculation, but also drive the stirring of the stirring frame in the drying tank and the work of the electric heater, ensuring the cooperative operation of the whole system in different processing stages, improving the processing efficiency and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0035] Figure 2 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0036] Figure 3 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0037] Figure 4 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0038] Figure 5 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0039] Figure 6 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0040] Figure 7 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0041] Figure 8 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application Figure 7 is a structural schematic view of B in the multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0042] Figure 9 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application

[0043] Figure 10 is a structural schematic view of A in the multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application; Figure 9

[0044] Figure 11 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0045] Figure 12 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0046] Figure 13 is a structural schematic view of a multi-stage processing device for copper-containing wastewater for resource recycling provided by the present application;

[0047] ​Figure 14 is a structural schematic diagram of a top sealing frame in a copper-containing wastewater multi-stage treatment device for resource recycling provided by the present application;

[0048] Figure 15 is a structural schematic diagram of a stirring frame in a copper-containing wastewater multi-stage treatment device for resource recycling provided by the present application.

[0049] In the figure:

[0050] 1, treatment machine base;

[0051] 2, preliminary filtration structure; 201, filtration station; 202, filtration water tank; 203, water inlet pipe; 204, transmission roller; 205, grid belt; 206, servo motor one; 207, sundry box; 208, supply pump;

[0052] 3, neutralization structure; 301, neutralization tank; 302, support frame; 303, transmission rod; 304, pulley one; 305, heating rod; 306, limiting rod; 307, inner shaft rod; 308, mixing frame; 309, sealing disc; 310, spring; 311, frame bottom frame; 312, vertical toothed plate; 313, straight toothed wheel; 314, worm one; 315, worm gear one; 316, driven rod; 317, worm two; 318, drainage groove; 319, electromagnetic valve; 320, water level sensor;

[0053] 4, sedimentation structure; 401, sealing box; 402, sedimentation tank; 403, sedimentation cylinder; 404, sedimentation pipe; 405, top frame; 406, bottom frame; 407, drive rod; 408, worm gear two; 409, pulley two; 410, pulley three; 411, discharging rod; 412, discharging screw; 413, sedimentation discharge pipe; 414, bottom sealing frame; 415, cylinder one; 416, top sealing frame; 417, sealing frame plate; 418, cylinder two; 419, helical toothed ring; 420, helical toothed wheel; 421, servo motor two; 422, flocculation tank; 423, pulley four; 424, pulley five; 425, discharge frame; 426, floating discharge pipe; 427, drying tank; 428, stirring frame; 429, pulley six; 430, discharge pipe; 431, circulating pump;

[0054] 5, depth filtration tank; 6, ion exchange tank; 7, electrochemical treatment tank; 8, controller. DETAILED DESCRIPTION

[0055] The application is further described in detail below with the accompanying drawings and specific embodiments. The examples of the application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments are chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

[0056] Embodiment one, please refer to Figures 1-4 In this embodiment, a multi-stage processing device for copper-containing wastewater for resource recycling is provided, comprising: a processing base 1; a preliminary filtering structure 2 is assembled on the top, and a neutralizing structure 3 connected with the preliminary filtering structure 2; the neutralizing structure 3 is used for adjusting the pH value and temperature parameter of the copper-containing wastewater after preliminary filtration;

[0057] The neutralizing structure 3 is connected with a precipitation structure 4 for precipitation treatment of the copper-containing wastewater.

[0058] The precipitation structure 4 is used for long-time precipitation of the copper-containing wastewater and can automatically clean and dry the precipitate, which is beneficial to subsequent treatment of the precipitate;

[0059] The precipitation structure 4 is connected with a depth filtration tank 5, which is internally provided with a sand filter and an activated carbon filter screen for depth filtration of suspended solids and fine particles in the wastewater, and uses ultrafiltration, nanofiltration and reverse osmosis membrane to efficiently remove soluble copper ion impurities in the wastewater;

[0060] The depth filtration tank 5 is connected with an ion exchange tank 6, which is internally provided with ion exchange resin to neutralize copper ions in the copper-containing wastewater and replace the copper ions with the resin;

[0061] The ion exchange tank 6 is connected with an electrochemical treatment tank 7, which uses an electrolytic cell to reduce the copper ions in the wastewater to metallic copper under the action of an electric field, thereby recycling the copper metal in the copper-containing wastewater; the drainage end of the ion exchange tank 6 is connected to an external disinfecting device, which can use ultraviolet or chlorination disinfection to disinfect pathogenic microorganisms in the wastewater; the preliminary filtering structure 2 is externally provided with a controller 8 for controlling the device column body.

[0062] Embodiment two, please refer to Figure 5 In this embodiment, a preliminary filtering structure 2 in a multi-stage processing device for copper-containing wastewater for resource recycling is provided;

[0063] The preliminary filtering structure 2 is used for preliminary filtering of large particle substances, suspended solids, grease and other impurities in the copper-containing wastewater;

[0064] The preliminary filtering structure 2 comprises a filtering station 201 fixedly installed on the surface of the processing machine base 1, and a filtering water tank 202 is fixedly installed on the filtering station 201, two groups of transmission rollers 204 are rotatably installed in the filtering water tank 202, a grid belt 205 is arranged between the two groups of transmission rollers 204, and one end of each transmission roller 204 is connected with a servo motor 206;

[0065] The servo motor 206 is fixedly arranged on the outer wall of the filtering water tank 202, and is used for driving the rotation of each transmission roller 204;

[0066] A sundry box 207 for collecting sundries filtered by the grid belt 205 is fixedly arranged on one side of the filtering water tank 202, and a water inlet pipe 203 connected with a wastewater discharge pipe is arranged on the top of the filtering water tank 202;

[0067] A supply pump 208 is connected with the filtering water tank 202, and the supply pump 208 is connected with the neutralizing structure 3.

[0068] Embodiment three, please refer to Figures 6-10 In this embodiment, a neutralizing structure 3 in a multi-stage processing device for copper-containing wastewater for resource recycling is provided.

[0069] The neutralizing structure 3 comprises a neutralizing tank 301, a sealing disc 309 is vertically and sealingly movably arranged in the neutralizing tank 301, a vertical toothed plate 312 is fixedly installed at the bottom end of the sealing disc 309, a spur gear 313 is engaged with the vertical toothed plate 312, and a spring 310 is arranged between the sealing disc 309 and the neutralizing tank 301.

[0070] A support frame 302 is fixedly arranged on the outer wall of the neutralizing tank 301, and the neutralizing tank 301 is fixedly installed on the processing machine base 1 through the support frame 302.

[0071] A transmission rod 303 is rotatably installed on the inner wall of the top of the neutralizing tank 301, a heating rod 305 is fixedly arranged at the bottom end of the transmission rod 303, limiting rods 306 are fixedly arranged on the outer walls of the two sides of the heating rod 305, and a mixing frame 308 is slidably sleeved on the inner side of the neutralizing tank 301 through the outer wall of the limiting rod 306.

[0072] The mixing frame 308 is used for fully mixing and stirring when the acid-base adjusting agent is added into the copper-containing wastewater in the neutralizing tank 301, and a pulley one 304 is fixedly arranged on the outer wall of the top end of the transmission rod 303.

[0073] The heating rod 305 and its limiting rod 306 are slidably sleeved on the outer wall of their bottom ends, and an inner shaft 307 is rotatably mounted on the inner wall of the vertical toothed plate 312. The inner shaft 307 is rotatably mounted on the inner wall of the vertical toothed plate 312 and its sealing disc 309, and the inner shaft 307 is slidably sleeved with the heating rod 305 and the limiting rod 306.

[0074] The bottom wall of the neutralization tank 301 is fixed with a frame base 311, and the frame base 311 has a groove for the vertical toothed plate 312 to extend and slide.

[0075] The spur gear 313 is rotatably mounted inside the frame base 311, and one end of the spur gear 313 is equipped with a one-way bearing, and a worm gear 314 is mounted through the one-way bearing. The worm gear 314 meshes with a worm wheel 315, and the worm wheel 315 is fixed with a driven rod 316 rotatably mounted inside the frame base 311.

[0076] When the vertical gear plate 312 moves up and down, it can mesh with the spur gear 313, causing the spur gear 313 to drive the worm gear 314 to rotate. The worm gear 314 is equipped with a one-way bearing. When the vertical gear plate 312 is moving downwards, the spur gear 313 can rotate the worm gear 314 through the locked one-way bearing. However, when the vertical gear plate 312 is moving upwards, the spur gear 313 cannot drive the worm gear 314 through the movable one-way bearing. A second worm gear 317 is fixedly mounted at one end of the driven rod 316, and the second worm gear 317 meshes with a second worm wheel 408.

[0077] A drainage groove 318 is provided through the top side of the neutralization tank 301, and a solenoid valve 319 is installed on the drainage groove 318. A water level sensor 320 is installed on the inner wall of the neutralization tank 301 at the location of the drainage groove 318. The water level sensor 320 is used to detect the water level status of the inner wall of the neutralization tank 301.

[0078] Example 4, please refer to Figures 11-15 In this embodiment, a sedimentation structure 4 is provided in a multi-stage treatment device for copper-containing wastewater for resource recycling;

[0079] The sedimentation structure 4 includes a flocculation box 422 that is connected in communication with the drainage trough 318. The bottom of the flocculation box 422 is sealed with three sedimentation pipes 404, and the bottom of the sedimentation pipes 404 is correspondingly provided with a sedimentation box 402. A sealing box 401 is provided outside the sedimentation box 402, and the sedimentation box 402 is rotatably installed inside the sealing box 401. The sedimentation box 402 is sealed and rotatably installed inside the sealing box 401, and the sedimentation box 402 is used to collect the reaction precipitate after adding flocculant to copper-containing wastewater.

[0080] The precipitation tank 402 is provided with four docking holes, and the inner side of the docking hole is fixed with a precipitation cylinder 403, and the precipitation cylinder 403 and the precipitation tank 402 have a sealed gap.

[0081] The inner top of the sealing tank 401 is fixedly provided with a top frame 405, and the bottom of the sealing tank 401 is fixedly provided with a bottom frame 406. The top frame 405 is rotatably installed with a driving rod 407 penetrating through the outside of the flocculation tank 422, the precipitation tank 402 and the bottom frame 406.

[0082] The bottom end of the driving rod 407 is fixedly provided with a worm gear two 408 and a belt wheel two 409, and the top end of the driving rod 407 is fixedly provided with a belt wheel four 423 and a belt wheel five 424. A belt is wound between the belt wheel four 423 and the belt wheel one 304. The driving rod 407 is engaged with the worm gear two 408 and the worm gear two 317.

[0083] A precipitation discharge pipe 413 is fixedly arranged on the bottom wall of the sealing tank 401 below the single precipitation cylinder 403. A discharging rod 411 is rotatably arranged in the inner side of the precipitation discharge pipe 413, and a discharging spiral 412 is fixedly arranged on the outer wall of the discharging rod 411 and closely arranged on the inner wall of the precipitation discharge pipe 413.

[0084] The bottom end of the discharging rod 411 is sealingly rotatably penetrated through the outside of the precipitation discharge pipe 413, and a belt wheel three 410 is fixedly arranged. A belt is wound between the belt wheel three 410 and the belt wheel two 409. When the driving rod 407 rotates, the belt wheel three 410 can be driven through the transmission belt on the belt wheel two 409, so that the discharging rod 411 drives the discharging spiral 412 to rotate.

[0085] A bottom sealing frame 414 is movably arranged on the bottom of the precipitation tank 402 corresponding to the position of the precipitation tank 402. A plurality of air cylinders one 415 are arranged between the bottom sealing frame 414 and the bottom frame 406. The bottom sealing frame 414 is used to seal the gap between the precipitation cylinder 403 and the precipitation tank 402 after the angle of the precipitation tank 402 is adjusted.

[0086] A top sealing frame 416 is movably arranged on the top of the precipitation tank 402 and sleeved on the outer wall of the precipitation pipe 404. An sealing frame plate 417 is fixedly arranged on the outer wall of the precipitation pipe 404 above the top sealing frame 416. An air cylinder two 418 is arranged between the sealing frame plate 417 and the top sealing frame 416. The air cylinder two 418 is used to move the top sealing frame 416 to seal the gap between the precipitation cylinder 403 and the precipitation tank 402.

[0087] The outer wall of the precipitation tank 402 is fixedly provided with a bevel gear ring 419, the bevel gear ring 419 is engaged with a bevel gear 420, and the bevel gear 420 is connected with a servo motor two 421. The servo motor two 421 is fixedly arranged on the inner wall of the sealing tank 401, and the servo motor two 421 is used to drive the bevel gear 420 to rotate and engage the bevel gear ring 419.

[0088] The top side of the flocculation tank 422 is throughly connected with a floating discharge pipe 426, and the flocculation tank 422 is internally provided with a discharge frame 425 fixedly installed on the outer wall of the drive rod 407.

[0089] When the discharge frame 425 rotates with the drive rod 407, the oil stains or flocculation floating on the water surface at the top of the flocculation tank 422 can be discharged into the floating discharge pipe 426.

[0090] One end of the bottom of the precipitation discharge pipe 413 is throughly connected with a drying tank 427, and the drying tank 427 is internally rotatably installed with a stirring frame 428, the top end of the stirring frame 428 is rotatably penetrated outside the drying tank 427, and is fixedly provided with a belt wheel six 429; the belt wheel six 429 and the belt wheel five 424 are sleeved with a belt;

[0091] The drying tank 427 is internally provided with an electric heater for drying the precipitate; the bottom end of the drying tank 427 is throughly connected with a discharge pipe 430.

[0092] The sealing tank 401 and the flocculation tank 422 are connected with a circulating pump 431.

[0093] According to the above embodiment, the working principle of the present application is:

[0094] The copper-containing wastewater is discharged into the inside of the filtering water tank 202 through the water inlet pipe 203, and the copper-containing wastewater in the inside of the filtering water tank 202 is filtered by the grid belt 205 for larger particles;

[0095] The grid belt 205 is driven to rotate by the starting servo motor one 206, and after the starting servo motor one 206 is started, the transmission roller 204 is driven to rotate, so that the grid belt 205 is driven to move in the inside of the filtering water tank 202, and the larger particles in the copper-containing wastewater can be automatically filtered in the inside of the sundry tank 207;

[0096] And the filtered copper-containing wastewater in the filter tank 202 is discharged into the neutralizing tank 301 by the supply pump 208, and the water pressure provided by the supply pump 208 causes the sealing disc 309 inside the neutralizing tank 301 to descend along the inside of the neutralizing tank 301, causing the sealing disc 309 to move downward against the vertical tooth plate 312, and when the vertical tooth plate 312 descends, it engages the spur gear 313, which rotates and drives the worm 314 through the self-locking one-way bearing, and the rotation of the worm 314 engages the worm gear 315 to rotate, which drives the driven rod 316 to rotate through the worm gear 315, and the rotating worm gear 317 drives the worm gear 408 to rotate through the driven rod 316, which drives the discharge rack 425 fixed to the drive rod 407 to rotate, and the floating flocculation material in the flocculation tank 422 is rotated and discharged into the floating discharge pipe 426, which is connected to an external collection tank for separate treatment of the floating flocculation material;

[0097] And the rotation of the drive rod 407 simultaneously rotates the pulley 409, the pulley 423, and the pulley 424;

[0098] The rotating pulley 423 rotates the pulley 304 through the belt, which drives the transmission rod 303 to rotate through the pulley 304, and the rotating transmission rod 303 drives the heating rod 305 to rotate inside the neutralizing tank 301, and the heating rod 305 is electrically connected through the electric slip ring;

[0099] After adding acid and alkali additives to the neutralizing tank 301, the rotating heating rod 305 can drive the mixing rack 308 to rotate inside the neutralizing tank 301 to mix and treat the copper-containing wastewater, and the mixing rack 308 is a movable sleeve that is set outside the limiting rod 306 of the heating rod 305, and when the water pressure stops supplying in the neutralizing tank 301, the mixing rack 308 stops rotating inside the neutralizing tank 301, and the mixing rack 308 can slide down to the surface of the sealing disc 309 outside the heating rod 305 under the force of gravity, so that when the water pressure is supplied again, the mixing rack 308 can fully mix the contents inside the neutralizing tank 301, so that the acid and alkali additives in the neutralizing tank 301 can fully neutralize the copper-containing wastewater, adjust the pH value, and then adjust the temperature parameter through the heating rod 305;

[0100] The neutralizing tank 301 also has a pH sensor and a temperature sensor installed inside to detect the pH value and temperature value of the copper-containing wastewater inside the neutralizing tank 301;

[0101] When the supply pump 208 stops supplying water, and the electromagnetic valve 319 is opened, the sealing disc 309 inside the neutralizing tank 301 can rebound with the spring 310 to pressurize the water source and discharge it into the drain groove 318, and then the copper-containing wastewater is discharged into the flocculation tank 422 through the drain groove 318;

[0102] After adding flocculating agent inside flocculation tank 422 and having sufficient precipitation time, the flocculated copper-containing wastewater is precipitated inside precipitation tank 402. When the flocculated and precipitated copper-containing wastewater is discharged, servo motor two 421 is started to drive bevel gear 420 to rotate, which engages with bevel gear ring 419 to rotate precipitation tank 402 by 45° inside sealed tank 401 to discharge the flocculated and precipitated copper-containing wastewater into drying tank 427 connected by precipitation discharge pipe 413. Before adjusting the angle of precipitation tank 402, cylinder one 415 is used to separate bottom seal frame 414 from the gap between precipitation pipe 404 and precipitation tank 402. Cylinder two 418 is started to separate top seal frame 416 from the gap between precipitation pipe 404 and the top of precipitation tank 402.

[0103] When precipitation tank 402 is rotated inside sealed tank 401, the precipitates in the three precipitation pipes 404 on precipitation tank 402 can be discharged.

[0104] The rotation of drive rod 407 is transmitted by the belt between pulley five 424 and pulley six 429 to heat and dry the flocculates in drying tank 427 by electric heater. Stirring frame 428 rotates with pulley six 429 to stir and uniformly heat and dry the flocculates.

[0105] The three precipitation pipes 404 are connected, and each precipitation pipe 404 is connected with depth filtration tank 5. After precipitation, the wastewater is discharged into depth filtration tank 5 by overflow to be depth filtered. The depth filtered copper-containing wastewater is discharged into ion exchange tank 6 to replace copper ions with resin.

[0106] After replacing copper ions, the copper-containing wastewater is discharged into electrochemical treatment tank 7, and copper ions in the wastewater are reduced to metallic copper by electrolytic cell under the action of electric field.

[0107] Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art and related fields without creative labor should belong to the scope of protection of the present application. The structures, devices and operation methods not specifically described and explained in the present application, such as without special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A multi-stage treatment device for copper-containing wastewater for resource recycling, characterized in that, include: Processing base (1); equipped with a preliminary filter structure (2) and a neutralization structure (3) connected to the preliminary filter structure (2); The preliminary filtration structure (2) includes a filtration station (201) fixedly installed on the surface of the processing base (1), and a filter water tank (202) is fixedly assembled on the filtration station (201). Two sets of transmission rollers (204) are rotatably installed inside the filter water tank (202). A grid belt (205) is wound between the two sets of transmission rollers (204). One end of each transmission roller (204) is connected to a servo motor (206). Furthermore, the servo motor (206) is fixedly installed on the outer wall of the filter water tank (202), and the servo motor (206) is used to actively drive the rotation of a single transmission roller (204); The filter tank (202) is fixedly provided with a debris box (207) on one side for collecting debris filtered by the grid belt (205); the filter tank (202) is provided with an inlet pipe (203) connected to the wastewater discharge pipe at the top. The filter tank (202) is connected to a supply pump (208) on its side, and the supply pump (208) is connected to the neutralization structure (3); The neutralization structure (3) includes a neutralization tank (301), and a sealing disc (309) is vertically and movably installed inside the neutralization tank (301). A vertical toothed plate (312) is fixedly installed at the bottom of the sealing disc (309), and a spur gear (313) meshes with the vertical toothed plate (312). A spring (310) is assembled between the sealing disc (309) and the neutralization tank (301). The neutralization structure (3) is connected to a precipitation structure (4) for the precipitation treatment of copper-containing wastewater; The neutralization tank (301) is fixed to the outer wall of a support frame (302), and the neutralization tank (301) is fixedly installed on the processing base (1) via the support frame (302); A transmission rod (303) is rotatably installed on the inner wall of the top of the neutralization tank (301). A heating rod (305) is fixed at the bottom end of the transmission rod (303). A limiting rod (306) is fixed on both outer walls of the heating rod (305). The heating rod (305) is slidably sleeved on the outer wall of the limiting rod (306) and a mixing frame (308) located inside the neutralization tank (301) is mounted on it. A pulley (304) is fixedly provided on the outer wall of the top end of the transmission rod (303); The heating rod (305) and its limiting rod (306) are slidably sleeved on the outer wall of the bottom end, with an inner shaft rod (307) rotatably mounted on the inner wall of the vertical tooth plate (312). The neutralization tank (301) has a drainage trough (318) through the top side, and a solenoid valve (319) is installed on the drainage trough (318). A water level sensor (320) is installed on the drainage trough (318) located on the inner side wall of the neutralization tank (301). The sedimentation structure (4) includes a flocculation box (422) that is connected in communication with the drainage trough (318). The bottom of the flocculation box (422) is sealed with three sedimentation pipes (404), and the bottom of the sedimentation pipes (404) is correspondingly provided with sedimentation box (402). The sedimentation box (402) is provided with a sealing box (401) outside the sedimentation box (402), and the sedimentation box (402) is rotatably installed inside the sealing box (401). The top of the sealed box (401) is fixedly provided with a top frame (405), and the bottom of the sealed box (401) is fixedly assembled with a bottom frame (406). The sedimentation tank (402) has four docking holes, and a sedimentation cylinder (403) is fixed inside the docking holes. There is a sealed gap between the sedimentation cylinder (403) and the sedimentation tank (402). A bottom sealing frame (414) is movably provided at the bottom of the sedimentation tank (402) corresponding to the position of the sedimentation tank (402), and a number of cylinders (415) are assembled between the bottom sealing frame (414) and the bottom frame (406). The top of the sedimentation tank (402) is movably provided with a top sealing frame (416) sleeved on the outer wall of the sedimentation tube (404), and a sealing plate (417) fixed on the outer wall of the sedimentation tube (404) is provided above the top sealing frame (416), and a cylinder two (418) is provided between the sealing plate (417) and the top sealing frame (416). The sedimentation tank (402) is fixedly fitted with a helical tooth ring (419) on its outer wall, and the helical tooth ring (419) is meshed with a helical gear (420). A circulation pump (431) is connected between the sealed box (401) and the flocculation box (422).

2. The multi-stage treatment device for copper-containing wastewater for resource recovery according to claim 1, characterized in that, The bottom wall of the neutralization tank (301) is fixed with a frame base (311), and the frame base (311) has a groove for the vertical toothed plate (312) to extend and slide. The spur gear (313) is rotatably mounted inside the frame base (311), and one end of the spur gear (313) is equipped with a one-way bearing, and a worm gear (314) is mounted through the one-way bearing. The worm gear (314) meshes with a worm wheel (315), and the worm wheel (315) is fixed with a driven rod (316) rotatably mounted inside the frame base (311).

3. A multi-stage treatment device for copper-containing wastewater for resource recovery according to claim 2, characterized in that, One end of the driven rod (316) is fixedly provided with a worm gear two (317), and the worm gear two (317) is engaged with a worm wheel two (408).

4. A multi-stage treatment device for copper-containing wastewater for resource recovery according to claim 1, characterized in that, The top frame (405) is rotatably installed with a drive rod (407) that rotatably passes through the outside of the flocculation box (422), the sedimentation box (402) and the bottom frame (406). The bottom outer wall of the drive rod (407) is fixedly fitted with a worm gear two (408) and a pulley two (409), and the top of the drive rod (407) is fixedly fitted with a pulley four (423) and a pulley five (424).

5. A multi-stage treatment device for copper-containing wastewater for resource recovery according to claim 4, characterized in that, Below each sedimentation cylinder (403) is a sedimentation discharge pipe (413) fixed to the bottom wall of the sealed box (401). A feeding rod (411) is rotatably arranged inside the sedimentation discharge pipe (413), and a feeding spiral (412) is fixed to the outer wall of the feeding rod (411) and closely attached to the inner wall of the sedimentation discharge pipe (413). The bottom end of the feed rod (411) is sealed and rotates through the outside of the sedimentation discharge pipe (413), and is fixedly provided with pulley three (410), with a belt wound between pulley three (410) and pulley two (409).

6. A multi-stage treatment device for copper-containing wastewater for resource recovery according to claim 1, characterized in that, The helical gear (420) is connected to a servo motor (421).

7. A multi-stage treatment device for copper-containing wastewater for resource recovery according to claim 5, characterized in that, The top side of the flocculation box (422) is connected to a floating discharge pipe (426), and the flocculation box (422) is provided with a discharge rack (425) fixedly installed on the outer wall of the drive rod (407). The bottom end of the sediment discharge pipe (413) is connected to a drying box (427), and a stirring rack (428) is rotatably installed inside the drying box (427). The top of the stirring rack (428) rotatably passes through the outside of the drying box (427) and is fixedly equipped with a pulley six (429). The bottom of the drying oven (427) is connected to a discharge pipe (430).

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