A heavy metal mine acid wastewater treatment device and method

Abstract

The application discloses a heavy metal mine acid wastewater treatment equipment and method, and belongs to the technical field of wastewater treatment. The heavy metal mine acid wastewater treatment equipment comprises a residue screening barrel, one side of the residue screening barrel is externally provided with a first treatment box, one side of the first treatment box is externally provided with a second treatment box, the inner side of the residue screening barrel is provided with a water collecting pipe at the top, one end of the top of the water collecting pipe is screwed with a guide table, the outer wall of the guide table is fixedly welded with the inner wall of the residue screening barrel, one end of the bottom of the water collecting pipe is screwed with a screen, the bottom center of the screen is screwed with a first motor, the output end of the first motor is fixed with a scraper, the outer wall of the scraper is attached to the inner wall of the screen, one side of the screen is provided with a blow-off port, and the outer wall of the blow-off port is welded with a blow-off pipe. The application effectively solves the problem that the prior art cannot filter slag in the treatment of acid wastewater, which causes the slag to block the filter device and simultaneously affects the treatment effect of the acid wastewater.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a device and method for treating acidic wastewater from heavy metal mines. Background Technology

[0002] A mine refers to an independent production and operation unit that extracts ore within a defined mining boundary. The vast majority of my country's mineral resources are coal mines, pyrite, and polymetallic sulfide ores. The sulfate in the acidic wastewater from mines originates from the oxidation of a certain amount of sulfur and sulfides in the ore during the coal mining process. Mines contain a large amount of acidic wastewater, which needs to be treated to prevent environmental pollution.

[0003] A search revealed an existing technology (publication number: CN208308498U) for a treatment device for acid-base neutralization of mine wastewater. The document states that it "includes a displacement device and an alkaline wastewater container. An acidic raw material inlet is fixedly installed on the upper outer surface of the displacement device, and a first-stage feed pipe is provided on one side of the displacement device's outer surface. An acidic wastewater container is fixedly installed at one end of the first-stage feed pipe, and a third-stage feed pipe is fixedly connected to one side of the acidic wastewater container's outer surface. A neutralization reaction vessel is fixedly installed at one end of the third-stage feed pipe. A filter screen is fixedly installed inside the neutralization reaction vessel, and a filter screen is fixedly installed on the other side of the neutralization reaction vessel near the bottom of the filter screen." The device features a discharge port, with a No. 2 feed pipe fixedly installed on the outer surface of the other side of the acidic wastewater container, and an alkaline raw material inlet on the upper outer surface of the alkaline wastewater container. This equipment utilizes a displacement device to pre-displace precious metal ions from the acidic wastewater before the acid-alkali reaction, recovering usable metals. The heat dissipation layer quickly dissipates the heat released during acid-alkali neutralization, preventing damage to the neutralization reaction container due to excessive temperature. The discharge port and filter screen prevent the salt produced during acid-alkali neutralization from clogging the outlet. The entire structure is simple, easy to operate, and performs better than traditional methods.

[0004] However, existing technologies cannot filter slag when treating acidic wastewater, which causes the slag to clog the filter device and affects the treatment effect of acidic wastewater. Therefore, it is necessary to design a treatment device for acidic wastewater from heavy metal mines. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that existing designs cannot filter slag when treating acidic wastewater, causing the slag to clog the filter device and affecting the treatment effect of acidic wastewater.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A treatment device for acidic wastewater from heavy metal mines includes a slag screening bucket. A first treatment box is located on one side of the slag screening bucket, and a second treatment box is located on one side of the first treatment box. A water collection pipe is located on the top inner side of the slag screening bucket, and a guide platform is screwed to one end of the top of the water collection pipe. The outer wall of the guide platform is welded and fixed to the inner wall of the slag screening bucket. A screen is screwed to one bottom end of the water collection pipe. A first motor is screwed to the center of the bottom of the screen, and a scraper is fixed to the output end of the first motor. The outer wall of the scraper is in contact with the inner wall of the screen. A drain outlet is located on one side of the screen, and a drain pipe is welded to the outside of the drain outlet. A movable opening is located on one side of the outer wall of the drain pipe. An electric slide rail is screwed to the top of the outer wall of the screen, and a slider is slidably installed inside the electric slide rail. A sealing block is inserted inside the drain pipe, and the slider... A support rod is welded to the outer wall, and the other end of the support rod is welded and fixed to the outer wall of the sealing block. A telescopic hose is sleeved on the sewage pipe. A filter cylinder is provided on the other side of the slag screening bucket, and the other end of the telescopic hose extends into the filter cylinder. A support platform is welded to the bottom of the inner side of the filter cylinder, and a pair of shock-absorbing pads are glued to the top end face of the support platform. A vibration motor is screwed to the top of the shock-absorbing pads, and a vertical rod is fixed to the output end of the vibration motor. A filter layer is snapped into the inside of the filter cylinder, and the bottom of the filter layer is welded and fixed to the top end of the vertical rod. A shock-absorbing ring is glued to the outer wall of the filter layer, and the outer wall of the shock-absorbing ring is in contact with the inner wall of the filter cylinder. A discharge pipe is welded to the bottom of the filter cylinder. A conveying pipe is welded to the bottom of the slag screening bucket, and the other end of the conveying pipe extends into the first processing box. The other end of the discharge pipe extends into the conveying pipe.

[0008] Preferably, the sealing block is located outside the drain outlet, the outer contour of the sealing block is the same as the shape of the movable outlet, and the screen is hemispherical.

[0009] Preferably, the filter layer is composed of gauze and activated carbon, with the gauze wrapped around the activated carbon.

[0010] Preferably, the top of the filter cylinder is fitted with a top cover, the water collection pipe is a corrugated telescopic pipe, and connecting plates are screwed around the bottom of the water collection pipe. A tension spring is welded to the top end face of the connecting plate, and the top end of the tension spring is welded and fixed to the bottom end face of the guide platform.

[0011] Preferably, a guide plate is welded to the inner wall of one end of both the first and second processing boxes, and a partition is installed on the inner wall of the other end of both the first and second processing boxes via a rotating shaft. The top end face of the partition is provided with several equidistant holes, and a third motor is fixed on the rotating shaft used to connect the partition.

[0012] Preferably, the outer wall of the other end of the first processing box and the second processing box is provided with a discharge port, the discharge port is provided with a moving groove, and the top of the moving groove is provided with a moving opening. A sealing plate is slidably installed inside the moving groove, and a lifting block is welded to the top of the sealing plate. The other end of the lifting block extends into the moving opening.

[0013] Preferably, a pump is screwed to one side of the first processing box, and a feeding pipe is inserted into the output end of the pump. The other end of the feeding pipe is inserted into and connected to the second processing box. A filter screen is screwed to the inner wall of one side of the first processing box, and the filter screen is sleeved on the outside of the pump.

[0014] Preferably, a pair of slides are welded to the top of both the first and second processing boxes, and a movable seat is snapped between each pair of slides. Electric drive wheels are screwed to both ends of the movable seat, and the electric drive wheels extend into the interior of the movable seat. An electric lifting rod is screwed to the center of the bottom of the movable seat, and a connecting frame is screwed to the telescopic end of the electric lifting rod. A linkage rod is inserted into the connecting frame, and a transmission rod is welded to both ends of the linkage rod. Several agitator plates are welded at equal intervals to the outer wall of the transmission rod.

[0015] Preferably, a first gear is welded to one end of the linkage rod, a drive groove is provided on the bottom end face of the movable seat, and a second motor is screwed into the drive groove. A second gear is fixed to the output end of the second motor, and a belt is sleeved on the second gear. The bottom of the belt is sleeved on the first gear.

[0016] A method for treating acidic wastewater from heavy metal mines includes the following steps:

[0017] Step 1: Wastewater filtration. Acidic wastewater generated in heavy metal mines is discharged into a slag screening bucket. Guided by the guide platform, the acidic wastewater flows into a collection pipe. The slag in the acidic wastewater can be filtered out through the screen. The filtered wastewater flows into the first treatment tank through a conveying pipe. The expansion and contraction of the collection pipe can be used to expand its storage capacity. A tension spring can act as a buffer when the collection pipe is extended.

[0018] Step Two: Slag Treatment. An electric slide rail drives the slider to move. Pulled by the support rod, the sealing block moves from the movable opening. The first motor drives the scraper to rotate, pushing the slag filtered through the screen to the discharge port. Guided by a telescopic hose, the slag enters the filter cylinder and falls onto the filter layer. A vibrating motor, driven by a vertical rod, vibrates the slag on the filter layer, facilitating the separation of wastewater adhering to the slag surface. The wastewater flows through a discharge pipe into a conveying pipe and is then transported to the first treatment tank. Shock-absorbing pads and rings dampen vibrations during motor operation.

[0019] Step 3: Wastewater treatment. Neutralizing agents are added to both the first and second treatment tanks to adjust the pH value, causing heavy metal ions to precipitate as hydroxides. The controller starts the second motor, which drives the belt via the second gear. Under the belt's pull, the first gear rotates synchronously, and this rotation drives the transmission rod via a linkage rod. The agitator plate stirs the wastewater, facilitating thorough mixing of the neutralizing agent and wastewater. The controller drives the electric drive wheel, moving the movable seat on the carriage to change the mixing position. After mixing, the wastewater is allowed to settle. A third motor drives the partition plate to rotate, causing the sediment to roll down the guide plate to the bottom of the tank. The partition plate is then closed. A pump and feed pipe draw water from the first treatment tank into the second treatment tank for secondary treatment, improving the overall treatment effect.

[0020] Compared with the prior art, the present invention provides a treatment device for acidic wastewater from heavy metal mines, which has the following beneficial effects:

[0021] 1. This invention involves discharging acidic wastewater from heavy metal mines into a slag-screening bin. Guided by a guide platform, the acidic wastewater flows into a collection pipe. A screen filters out the slag from the acidic wastewater. The filtered wastewater then flows through a conveying pipe into a first treatment tank. An electric slide rail drives a slider to move, and under the traction of a support rod, a sealing block moves from the movable opening. A first motor drives a scraper to rotate, pushing the slag filtered by the screen to the discharge port. This method effectively filters slag from the wastewater, preventing slag blockage. The equipment's effectiveness in treating acidic wastewater is affected by the slag. Guided by a telescopic hose, the slag enters the filter cylinder and falls onto the filter layer. A vibrating motor, driven by a vertical rod, vibrates the slag on the filter layer, facilitating the separation of wastewater adhering to the slag surface. The wastewater then flows through a discharge pipe into a conveying pipe, which transports it to the first treatment tank. Shock-absorbing pads and rings dampen vibrations during motor operation. This method also cleans the slag, preventing it from accumulating on the screen and hindering wastewater flow.

[0022] 2. Utilizing the expandability of the water collection pipe, its storage capacity can be expanded. A tension spring acts as a buffer when the water collection pipe extends. Starting the second motor causes the second gear to drive the belt for transmission. Under the traction of the belt, the first gear will rotate synchronously. The rotation of the first gear will drive the transmission rod to rotate through the linkage rod. The stirring plate can agitate the wastewater, which is conducive to the thorough mixing of the neutralizing agent and the wastewater. The controller drives the electric drive wheel to move the moving seat on the slide, which can change the mixing position. Attached Figure Description

[0023] Figure 1This is an overall isometric view of an acidic wastewater treatment device for heavy metal mines proposed in this invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the slag screening bucket in a heavy metal mine acidic wastewater treatment device proposed in this invention.

[0025] Figure 3 This is a schematic diagram of the bottom structure of the screen in a heavy metal mine acidic wastewater treatment device proposed in this invention.

[0026] Figure 4 This is an overall cross-sectional view of an acidic wastewater treatment device for heavy metal mines proposed in this invention;

[0027] Figure 5 This is an overall vertical sectional view of an acidic wastewater treatment device for heavy metal mines proposed in this invention;

[0028] Figure 6 This is a schematic diagram of the overall structure of a heavy metal mine acidic wastewater treatment device proposed in this invention.

[0029] Figure 7 This is an overall side view of a heavy metal mine acidic wastewater treatment device proposed in this invention.

[0030] Drawing Number Explanation: 1. Slag Screening Bucket; 2. First Processing Box; 3. Second Processing Box; 4. Water Collection Pipe; 5. Guide Platform; 6. Screen; 7. First Motor; 8. Scraper; 9. Drainage Outlet; 10. Drainage Pipe; 11. Movable Port; 12. Electric Slide Rail; 13. Sliding Block; 14. Sealing Block; 15. Support Rod; 16. Telescopic Flexible Hoose; 17. Filter Cylinder; 18. Support Platform; 19. Shock Absorbing Pad; 20. Vibration Motor; 21. Vertical Rod; 22. Filter Layer; 23. Shock Absorbing Ring; 24. Discharge Pipe; 25. Conveying Pipe; 26. Top Cover; 27. Connecting Plate; 28. 29. Tension spring; 30. Guide plate; 31. Partition plate; 32. Leakage hole; 33. Discharge port; 34. Moving trough; 35. Moving opening; 36. Sealing plate; 37. Lifting block; 38. Pump; 39. Feeding pipe; 40. Slide frame; 41. Moving seat; 42. Electric drive wheel; 43. Electric lifting rod; 44. Connecting frame; 45. Linkage rod; 46. Transmission rod; 47. Stirring plate; 48. First gear; 49. Drive trough; 50. Second motor; 51. Second gear; 52. Belt; 53. Third motor; 54. Controller; 55. Filter screen. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example

[0032] Please see Figure 1-4 A treatment device for acidic wastewater from heavy metal mines includes a slag screening bucket 1. A first treatment box 2 is located on one side of the slag screening bucket 1, and a second treatment box 3 is located on one side of the first treatment box 2. A water collection pipe 4 is located on the top inner side of the slag screening bucket 1, and a guide platform 5 is screwed to one end of the top of the water collection pipe 4. The outer wall of the guide platform 5 is welded and fixed to the inner wall of the slag screening bucket 1. A screen 6 is screwed to one end of the bottom of the water collection pipe 4. A first motor 7 is screwed to the center of the bottom of the screen 6, and a scraper 8 is fixed to the output end of the first motor 7. The outer wall of the scraper 8 is in contact with the inner wall of the screen 6. A drain outlet is located on one side of the screen 6. 9. A drain pipe 10 is welded to the outside of the drain outlet 9. A movable opening 11 is provided on one side of the outer wall of the drain pipe 10. An electric slide rail 12 is screwed to the top of the outer wall of the screen 6. A slider 13 is slidably installed inside the electric slide rail 12. A sealing block 14 is inserted into the inside of the drain pipe 10. A support rod 15 is welded to the outer wall of the slider 13. The other end of the support rod 15 is welded and fixed to the outer wall of the sealing block 14. A telescopic hose 16 is sleeved on the drain pipe 10. A filter cylinder 17 is provided on the other side of the screen slag bucket 1. The other end of the telescopic hose 16 extends into the filter cylinder 17. The filter cylinder 17 has an inner... A support 18 is welded to the bottom side, and a pair of shock-absorbing pads 19 are glued to the top end face of the support 18. A vibration motor 20 is screwed to the top of the shock-absorbing pads 19, and a vertical rod 21 is fixed to the output end of the vibration motor 20. A filter layer 22 is snapped into the inside of the filter cylinder 17, and the bottom of the filter layer 22 is welded to one end of the top of the vertical rod 21. A shock-absorbing ring 23 is glued to the outer wall of the filter layer 22, and the outer wall of the shock-absorbing ring 23 is in contact with the inner wall of the filter cylinder 17. A discharge pipe 24 is welded to the bottom of the filter cylinder 17, and a conveying pipe 25 is welded to the bottom of the slag screening bucket 1, with the other end of the conveying pipe 25 extending... The other end of the discharge pipe 24 extends into the conveying pipe 25 into the first processing box 2. The sealing block 14 is located outside the sewage outlet 9. The outer contour of the sealing block 14 is the same as the shape of the movable port 11. The screen 6 is hemispherical. The filter layer 22 is composed of gauze and activated carbon, and the gauze is wrapped around the activated carbon. The top cover 26 is inserted into the top of the filter cylinder 17. The water collection pipe 4 is a corrugated telescopic pipe. The bottom of the water collection pipe 4 is screwed with connecting plates 27. The top end of the connecting plate 27 is welded with a tension spring 28. The top end of the tension spring 28 is welded and fixed to the bottom end of the guide plate 5.

[0033] Acidic wastewater from heavy metal mines is discharged into a slag-screening bucket 1. Guided by the guide platform 5, the wastewater flows into a collection pipe 4. The slag in the wastewater is filtered out through a screen 6. The filtered wastewater then flows into the first treatment tank 2 through a conveying pipe 25. The storage capacity of the collection pipe 4 can be expanded using its expandable structure. An electric slide rail 12 drives a slider 13 to move, and under the traction of a support rod 15, a sealing block 14 can be moved from the movable opening 11. A first motor 7 drives a scraper 8 to rotate, removing the slag filtered out by the screen 6. The slag is pushed to the sewage outlet 9. Guided by the telescopic hose 16, the slag enters the filter cylinder 17 and falls onto the filter layer 22. The vibration motor 20 runs and is driven by the vertical rod 21, which can make the slag on the filter layer 22 vibrate, which helps to separate the wastewater adhering to the surface of the slag. The wastewater enters the conveying pipe 25 through the discharge pipe 24 and is transported to the first treatment box 2 by the conveying pipe 25. The shock-absorbing pads 19 and shock-absorbing rings 23 can play a shock-absorbing role when the vibration motor 20 is running. The tension spring 28 can play a buffering role when the water collection pipe 4 is extended. Example

[0034] Please see Figure 1-7The difference from Embodiment 1 is that guide plates 29 are welded to the inner walls of one end of both the first processing box 2 and the second processing box 3, and partitions 30 are installed on the inner walls of the other end of both the first processing box 2 and the second processing box 3 via rotating shafts. A plurality of drainage holes 31 are equidistantly opened on the top end face of the partitions 30. A third motor 52 is fixed on the rotating shaft connecting the partitions 30. Discharge ports 32 are opened on the outer walls of the other end of both the first processing box 2 and the second processing box 3. A moving groove 33 is opened inside the discharge port 32, and a moving opening 34 is opened at the top of the moving groove 33. A sealing plate 35 is slidably installed inside the moving groove 33, and a lifting block 36 is welded to the top of the sealing plate 35. The other end of the lifting block 36 extends into the moving opening 34. A pump 37 is screwed to one side of the first processing box 2, and a feeding pipe 38 is inserted into the output end of the pump 37. The other end of the feeding pipe 38 is connected to the second processing box 3. A filter screen is screwed to the inner wall of one side of the first processing box 2. 54, and the filter screen 54 is fitted onto the outside of the material pump 37. A pair of slides 39 are welded to the top of both the first processing box 2 and the second processing box 3, and a movable seat 40 is snapped between each pair of slides 39. Electric drive wheels 41 are screwed to both ends of the movable seat 40, and the electric drive wheels 41 extend into the interior of the movable seat 40. An electric lifting rod 42 is screwed to the center of the bottom of the movable seat 40, and a connecting frame 43 is screwed to the telescopic end of the electric lifting rod 42. A connecting frame 43 is inserted into the connecting frame 43. A linkage rod 44 is provided, and transmission rods 45 are welded to both ends of the linkage rod 44. Several stirring plates 46 are welded at equal intervals to the outer wall of the transmission rod 45. A first gear 47 is welded to one end of the linkage rod 44. A drive groove 48 is provided on the bottom end face of the moving seat 40. A second motor 49 is screwed into the drive groove 48. A second gear 50 is fixed to the output end of the second motor 49. A belt 51 is sleeved on the second gear 50. The bottom of the belt 51 is sleeved on the first gear 47.

[0035] By adding a neutralizing agent to the first treatment tank 2 and the second treatment tank 3 to adjust the pH value, heavy metal ions are precipitated as hydroxides. The controller 53 starts the second motor 49, which drives the second gear 50 to drive the belt 51. Under the traction of the belt 51, the first gear 47 rotates synchronously. The rotation of the first gear 47 drives the transmission rod 45 to rotate via the linkage rod 44. The stirring plate 46 agitates the wastewater, facilitating thorough mixing of the neutralizing agent and the wastewater. The controller 53 drives the electric drive wheel 41 to move the base 4. The 0 moves on the slide 39, which can change the position of the mixing and stirring. After mixing, the wastewater is left to stand, and the third motor 52 drives the partition 30 to rotate. The sediment will roll down the guide plate 29 to the bottom of the tank. The partition 30 is closed, and the water in the first treatment tank 2 can be pumped into the second treatment tank 3 for secondary treatment by the pump 37 and the feed pipe 38 to improve the treatment effect. After the liquid in the tank is drained, the lifting block 36 is lifted in the moving port 34, which can lift the sealing plate 35, so that the sediment can be taken out from the discharge port 32.

[0036] The vibration motor 20, tension spring 28, material pump 37, electric drive wheel 41, electric lifting rod 42, and controller 53 in this invention are all existing mature technologies, and therefore will not be described in detail. The controller 53 is used to control the operation of the electric drive equipment inside the device. In use, acidic wastewater generated in the heavy metal mine is discharged into the slag screening bucket 1. Under the guidance of the guide platform 5, the acidic wastewater flows into the water collection pipe 4. The slag in the acidic wastewater can be filtered out through the screen 6. The filtered wastewater flows into the first treatment tank 2 through the conveying pipe 25. The storage capacity of the water collection pipe 4 can be expanded by utilizing the extensibility of the water collection pipe 4. The slide rail 12 drives the slider 13 to move. Under the traction of the support rod 15, the sealing block 14 can be moved from the movable port 11. The first motor 7 drives the scraper 8 to rotate, which can push the slag filtered by the screen 6 to the discharge port 9. Guided by the telescopic hose 16, the slag will enter the filter cylinder 17 and fall onto the filter layer 22. The vibration motor 20 runs and is driven by the vertical rod 21, which can make the slag on the filter layer 22 vibrate, which is conducive to separating the wastewater adhering to the surface of the slag. The wastewater will enter the conveying pipe 25 through the discharge pipe 24 and be transported to the first treatment box 2 by the conveying pipe 25. The vibration is damped. The pad 19 and shock absorber ring 23 provide shock absorption during the operation of the vibrating motor 20. The tension spring 28 acts as a buffer when the water collection pipe 4 extends. By adding a neutralizing agent to the first treatment tank 2 and the second treatment tank 3 to adjust the pH value, heavy metal ions form hydroxide precipitates. The controller 53 starts the second motor 49, which drives the second gear 50 to drive the belt 51. Under the traction of the belt 51, the first gear 47 rotates synchronously. The rotation of the first gear 47 drives the transmission rod 45 to rotate through the linkage rod 44. The stirring plate 46 agitates the wastewater, which is beneficial for the neutralizing agent to react with the wastewater. After the water is fully mixed, the controller 53 drives the electric drive wheel 41 to move the moving seat 40 on the slide 39, which can change the mixing position. After mixing, the wastewater is left to stand, and the third motor 52 drives the partition 30 to rotate. The sediment will roll down the guide plate 29 to the bottom of the tank. The partition 30 is closed, and the pump 37 and the feed pipe 38 can be used to pump the water in the first treatment tank 2 into the second treatment tank 3 for secondary treatment to improve the treatment effect. After the liquid in the tank is drained, the lifting block 36 is lifted in the moving port 34, which can lift the sealing plate 35, so that the sediment can be taken out from the discharge port 32.

[0037] A method for treating acidic wastewater from heavy metal mines includes the following steps:

[0038] Step 1: Wastewater filtration. Acidic wastewater generated in heavy metal mines is discharged into the slag screening bucket 1. Under the guidance of the guide platform 5, the acidic wastewater flows into the water collection pipe 4. The slag in the acidic wastewater can be filtered out through the screen 6. The filtered wastewater flows into the first treatment tank 2 through the conveying pipe 25. The storage capacity of the water collection pipe 4 can be expanded by utilizing its elasticity. The tension spring 28 can play a buffering role when the water collection pipe 4 is extended.

[0039] Step 2: Slag treatment. The electric slide rail 12 drives the slider 13 to move. Under the traction of the support rod 15, the sealing block 14 can be moved from the movable port 11. The first motor 7 drives the scraper 8 to rotate, which can push the slag filtered by the screen 6 to the sewage outlet 9. Guided by the telescopic hose 16, the slag will enter the filter cylinder 17 and fall onto the filter layer 22. The vibration motor 20 runs and is driven by the vertical rod 21, which can make the slag on the filter layer 22 vibrate, which is conducive to separating the wastewater adhering to the surface of the slag. The wastewater will enter the conveying pipe 25 through the discharge pipe 24 and be transported to the first treatment box 2 by the conveying pipe 25. The shock-absorbing pad 19 and the shock-absorbing ring 23 can play a shock-absorbing role when the vibration motor 20 is running.

[0040] Step 3: Wastewater treatment. Neutralizing agents are added to the first treatment tank 2 and the second treatment tank 3 to adjust the pH value, causing heavy metal ions to precipitate as hydroxides. The controller 53 starts the second motor 49, which drives the second gear 50 to drive the belt 51. Under the traction of the belt 51, the first gear 47 rotates synchronously. The rotation of the first gear 47 drives the transmission rod 45 through the linkage rod 44. The stirring plate 46 agitates the wastewater, facilitating thorough mixing of the neutralizing agent and the wastewater. The controller 53 drives the electric drive wheel 41 to move the moving seat 40 on the slide 39, changing the mixing position. After mixing, the wastewater is allowed to settle. The third motor 52 drives the partition 30 to rotate, causing the sediment to roll down the guide plate 29 to the bottom of the tank. The partition 30 is then closed. The pump 37 and the feeding pipe 38 pump the water from the first treatment tank 2 into the second treatment tank 3 for secondary treatment, improving the treatment effect.

[0041] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of this template.

[0042] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A treatment device for acidic wastewater from heavy metal mines, comprising a slag screening bucket (1), characterized in that: A first processing box (2) is provided on one side of the slag screening bucket (1), and a second processing box (3) is provided on one side of the first processing box (2). A water collection pipe (4) is provided on the top of the inner side of the slag screening bucket (1), and a guide platform (5) is screwed to one end of the top of the water collection pipe (4). The outer wall of the guide platform (5) is welded and fixed to the inner wall of the slag screening bucket (1). A screen (6) is screwed to one end of the bottom of the water collection pipe (4). A first motor (7) is screwed to the center of the bottom of the screen (6), and a scraper (8) is fixed to the output end of the first motor (7). The outer wall of the scraper (8) is in contact with the inner wall of the screen (6). A side of the screen (6) is opened There is a drain outlet (9), and a drain pipe (10) is welded to the outside of the drain outlet (9). A movable opening (11) is opened on one side of the outer wall of the drain pipe (10). An electric slide rail (12) is screwed to the top of the outer wall of the screen (6), and a slider (13) is slidably installed inside the electric slide rail (12). A sealing block (14) is inserted into the inside of the drain pipe (10). A support rod (15) is welded to the outer wall of the slider (13), and the other end of the support rod (15) is welded and fixed to the outer wall of the sealing block (14). A telescopic hose (16) is sleeved on the drain pipe (10). A filter cylinder (17) is provided on the other side of the slag bucket (1). The other end of the telescopic hose (16) extends into the filter cylinder (17). A support (18) is welded to the bottom of the inner side of the filter cylinder (17), and a pair of shock-absorbing pads (19) are glued to the top end face of the support (18). A vibration motor (20) is screwed to the top of the shock-absorbing pads (19), and a vertical rod (21) is fixed to the output end of the vibration motor (20). A filter layer (22) is snapped into the inside of the filter cylinder (17), and the bottom of the filter layer (22) is welded to one end of the top of the vertical rod (21). A shock-absorbing ring (23) is glued to the outer wall of the filter layer (22), and the outer wall of the shock-absorbing ring (23) is glued to the filter cylinder (17). The inner wall is fitted together. The bottom of the filter cylinder (17) is welded with a discharge pipe (24). The bottom of the slag screening bucket (1) is welded with a conveying pipe (25). The other end of the conveying pipe (25) extends into the first processing box (2). The other end of the discharge pipe (24) extends into the conveying pipe (25). The top of the filter cylinder (17) is fitted with a top cover (26). The water collection pipe (4) is a corrugated telescopic pipe. The bottom of the water collection pipe (4) is screwed with connecting plates (27) around its perimeter. The top end of the connecting plate (27) is welded with a tension spring (28). The top end of the tension spring (28) is welded and fixed to the bottom end of the guide plate (5).

2. The heavy metal mine acidic wastewater treatment equipment according to claim 1, characterized in that: The sealing block (14) is located outside the drain outlet (9), and the outer contour of the sealing block (14) is the same as the shape of the movable opening (11). The screen (6) is hemispherical.

3. The heavy metal mine acidic wastewater treatment equipment according to claim 2, characterized in that: The filter layer (22) is composed of gauze and activated carbon, with the gauze wrapped around the outside of the activated carbon.

4. The heavy metal mine acidic wastewater treatment equipment according to claim 3, characterized in that: The inner walls of one end of the first processing box (2) and the second processing box (3) are both welded with guide plates (29). The inner walls of the other end of the first processing box (2) and the second processing box (3) are both equipped with partitions (30) through rotating shafts. The top end face of the partitions (30) is provided with several leakage holes (31) at equal intervals. A third motor (52) is fixed on the rotating shaft used to connect the partitions (30).

5. The heavy metal mine acidic wastewater treatment equipment according to claim 4, characterized in that: The outer walls of the first processing box (2) and the second processing box (3) are provided with discharge ports (32). The discharge ports (32) are provided with moving grooves (33) inside, and moving openings (34) are provided at the top of the moving grooves (33). A sealing plate (35) is slidably installed inside the moving grooves (33), and a lifting block (36) is welded to the top of the sealing plate (35). The other end of the lifting block (36) extends into the moving opening (34).

6. The heavy metal mine acidic wastewater treatment equipment according to claim 5, characterized in that: A material pump (37) is screwed to one side of the first processing box (2), and a feeding pipe (38) is inserted into the output end of the material pump (37). The other end of the feeding pipe (38) is inserted into and connected to the second processing box (3). A filter screen (54) is screwed to the inner wall of one side of the first processing box (2), and the filter screen (54) is sleeved on the outside of the material pump (37).

7. The heavy metal mine acidic wastewater treatment equipment according to claim 6, characterized in that: The top of the first processing box (2) and the second processing box (3) are each welded with a pair of slides (39), and each pair of slides (39) is connected with a movable seat (40). Both ends of the movable seat (40) are screwed with electric drive wheels (41), and the electric drive wheels (41) extend into the interior of the movable seat (40). The bottom center of the movable seat (40) is screwed with an electric lifting rod (42), and the telescopic end of the electric lifting rod (42) is screwed with a connecting frame (43). A linkage rod (44) is inserted into the connecting frame (43), and both ends of the linkage rod (44) are welded with transmission rods (45). Several agitator plates (46) are welded at equal intervals on the outer wall of the transmission rod (45).

8. The heavy metal mine acidic wastewater treatment equipment according to claim 7, characterized in that: One end of the linkage rod (44) is welded with a first gear (47), and the bottom end face of the movable seat (40) is provided with a drive groove (48), and a second motor (49) is screwed into the drive groove (48). The output end of the second motor (49) is fixed with a second gear (50), and a belt (51) is sleeved on the second gear (50). The bottom of the belt (51) is sleeved on the first gear (47).

9. A wastewater treatment method using the equipment as described in claim 8, characterized in that, Includes the following steps: Step 1: Wastewater filtration. Acidic wastewater generated in heavy metal mines is discharged into the slag screening bucket (1). Under the guidance of the guide platform (5), the acidic wastewater flows into the water collection pipe (4). The slag in the acidic wastewater is filtered out through the screen (6). The filtered wastewater flows into the first treatment tank (2) through the conveying pipe (25). The storage capacity of the water collection pipe (4) is expanded by utilizing the extensibility of the water collection pipe (4). The tension spring (28) plays a buffering role when the water collection pipe (4) is extended. Step 2: Slag treatment. The electric slide rail (12) drives the slider (13) to move. Under the traction of the support rod (15), the sealing block (14) moves from the movable port (11). The first motor (7) drives the scraper (8) to rotate, pushing the slag filtered by the screen (6) to the sewage outlet (9). The slag is guided by the telescopic hose (16) into the filter cylinder (17) and falls on the filter layer (22). The vibration motor (20) runs and is driven by the vertical rod (21) to make the slag on the filter layer (22) vibrate, which is conducive to separating the wastewater adhering to the surface of the slag. The wastewater enters the conveying pipe (25) through the discharge pipe (24) and is transported to the first treatment box (2) by the conveying pipe (25). The shock-absorbing pad (19) and the shock-absorbing ring (23) play a shock-absorbing effect when the vibration motor (20) runs. Step 3: Wastewater treatment. Neutralizing agents are added to the first treatment tank (2) and the second treatment tank (3) to adjust the pH value, causing heavy metal ions to precipitate as hydroxides. The second motor (49) is started by the controller (53), causing the second gear (50) to drive the belt (51) for transmission. Under the traction of the belt (51), the first gear (47) rotates synchronously. The rotation of the first gear (47) drives the transmission rod (45) to rotate via the linkage rod (44), and the wastewater is stirred by the agitator plate (46), which is beneficial for… The neutralizing agent and wastewater are thoroughly mixed. The controller (53) drives the electric drive wheel (41) to move the moving seat (40) on the slide (39) to change the mixing position. After mixing, the wastewater is left to stand. The third motor (52) drives the partition (30) to rotate. The sediment will roll down the guide plate (29) to the bottom of the tank. The partition (30) is closed. The pump (37) and the feeding pipe (38) are used to pump the water in the first treatment tank (2) into the second treatment tank (3) for secondary treatment to improve the treatment effect.

Images