A heavy metal-contaminated acid wastewater treatment device

Abstract

This invention belongs to the technical field of wastewater treatment equipment, specifically providing a heavy metal acid wastewater treatment device, including a neutralization tank, a sedimentation tank, and a filter tank, which are sequentially connected. The neutralization tank is equipped with a stirring mechanism, the sedimentation tank has a movable follow-up cleaning mechanism, a filter screen is provided between the sedimentation tank and the filter tank, and the filter screen has a cutting mechanism on its side near the filter tank. An adsorption mechanism is rotatably installed inside the filter tank, and an automatic material changing mechanism is provided on the outside of the filter tank. A material feeding guide rail is provided on the outer wall of the filter tank away from the automatic material changing mechanism. This invention provides a heavy metal acid wastewater treatment device capable of timely filter screen cleaning and automated adsorption column replacement. The neutralization tank, sedimentation tank, and filter tank form an integrated treatment process of "neutralization, sedimentation, filtration, and adsorption," reducing equipment connection losses and floor space requirements.

Description

Technical Field

[0001] This invention belongs to the technical field of wastewater treatment equipment, specifically referring to a heavy metal acid wastewater treatment equipment. Background Technology

[0002] Heavy metal acid wastewater refers to industrial wastewater containing high concentrations of heavy metal ions and acidic substances, mainly originating from industries such as non-ferrous metal smelting, chemical processing, electroplating, and mining. Heavy metal acid wastewater is characterized by high toxicity, wide-ranging pollution, and difficulty in degradation. If discharged directly without proper treatment, it will cause serious harm to soil, water bodies, and the ecological environment, and may even accumulate and affect human health through the food chain.

[0003] Existing heavy metal acid wastewater treatment equipment separates the acid neutralization, heavy metal precipitation, and precipitate filtration steps during purification, increasing energy consumption and floor space requirements between equipment, resulting in low treatment efficiency and difficulty in timely cleaning of filters. While existing technologies use adsorption to treat low-concentration heavy metal wastewater, the limited capacity of the adsorbent makes manual replacement difficult and leads to response delays, further reducing treatment efficiency and increasing labor intensity. Summary of the Invention

[0004] To address the aforementioned existing problems, this invention provides a heavy metal acid wastewater treatment device capable of timely filter cleaning and automated replacement of adsorption columns. It integrates a neutralization tank, a sedimentation tank, and a filter tank to form an integrated treatment process of "neutralization, sedimentation, filtration, and adsorption," reducing equipment connection losses and floor space requirements.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The present invention provides a heavy metal acid wastewater treatment device, comprising a neutralization tank, a sedimentation tank, and a filter tank, wherein the neutralization tank, sedimentation tank, and filter tank are connected in sequence, the upper part of the neutralization tank and the sedimentation tank are provided with a tank cover, the neutralization tank is provided with a stirring mechanism, the sedimentation tank is provided with a moving follow-up cleaning mechanism, a filter screen is provided between the sedimentation tank and the filter tank, the filter screen is provided with a cutting mechanism on the side near the filter tank, the filter tank is provided with a rotating adsorption mechanism inside, the filter tank is provided with an automatic material changing mechanism on the outside of the filter tank, and a material feeding guide rail is provided on the outer wall of the filter tank away from the automatic material changing mechanism.

[0006] Furthermore, the follow-up cleaning mechanism includes a partition and a cleaning brush. The partition is slidably disposed on the inner wall of the sedimentation tank, and has through holes evenly distributed on it. The side of the partition near the stirring mechanism is symmetrically provided with follow-up pull plates, which are arranged in an L-shape. The cleaning brush is symmetrically slidably disposed on the side of the filter screen away from the filter box. The cleaning brush slides inside the sedimentation tank, and the two ends of the cleaning brush are rotatably connected to the four corners of the partition with pull rods. When the partition slides closer to the filter screen, the cleaning brushes move closer to each other; when the partition slides away from the filter screen, the cleaning brushes move away from each other.

[0007] Furthermore, the automatic material changing mechanism includes a storage box and a feeding mechanism. The storage box is located on the outer wall of the filter box. Adsorption columns are stacked inside the storage box. The adsorption columns are made of activated carbon. A limiting arc plate is connected to the upper end of the storage box. The limiting arc plate is arranged in an inverted J shape. The inner arc surface of the limiting arc plate is in contact with the adsorption column. The feeding mechanism is located on the side wall of the storage box.

[0008] Furthermore, the stirring mechanism includes a central rotating column, a stirring frame, and a pulling rod. The central rotating column is rotatably mounted on the bottom wall of the neutralization box. The central rotating column is driven by a power motor, which is embedded in the lower part of the neutralization box. The stirring frame is evenly distributed around the outer wall of the central rotating column and is arranged in a U-shape. Stirring rollers are evenly distributed on the inner side of the stirring frame and are located on the outer wall of the central rotating column. The pulling rod is vertically mounted at the end of the stirring frame away from the central rotating column and passes through both the upper and lower ends of the stirring frame. As the central rotating column rotates, the pulling rod moves inside the follower plate.

[0009] During operation, the central rotating column rotates, driving the agitator and agitator rollers to tumble and mix the wastewater in the neutralization tank, adjusting the pH value of the wastewater. As the agitator rotates, the pull rod slides into the inner side of the follower plate when it approaches the partition. Driven by the circular trajectory of the pull rod, the partition slides back and forth. When the pull rod rotates away from the partition, the next pull rod slides into the inner side of the follower plate again, driving the partition to reciprocate. The reciprocating sliding of the partition enhances the agitation intensity of the wastewater in the neutralization tank and sedimentation tank, accelerating the neutralization treatment efficiency of acidic wastewater.

[0010] When the partition slides closer to the filter screen, the symmetrical cleaning brushes move closer together under the pressure of the pull rod. When the partition slides away from the filter screen, the symmetrical cleaning brushes move away from each other under the pull of the pull rod. Thus, the sliding of the partition directly drives the cleaning brushes to perform timely reciprocating brushing of the filter screen, realizing automatic cleaning of the filter screen and avoiding filter screen clogging.

[0011] Furthermore, the inner wall of the connection between the neutralization box and the sedimentation box is symmetrically provided with sliding grooves, the partition slides in the sliding grooves, and the pull rod moves against the inner side wall of the sedimentation box; the neutralization box is provided with a connecting ramp on the side near the sedimentation box, and a waste collection box is slidably provided at the bottom of the sedimentation box, the waste collection box overlaps on the connecting ramp, and the waste collection box has a pull-out structure.

[0012] Furthermore, the cutting mechanism includes an electric telescopic rod and a cutting plate. The electric telescopic rod is symmetrically arranged on the outer wall of the filter box, and the cutting plate is connected to the output end of the electric telescopic rod. The cutting plate slides inside the filter box and slides against the surface of the filter screen.

[0013] Furthermore, the side wall of the filter box is provided with a clearance groove. The adsorption mechanism includes a hydraulic motor, a rotary motor, a supporting rotating column, a sealing plate, a support rod, and an inserting rod. The hydraulic motor is located on the outer side wall of the filter box, and its output end is provided with a telescopic column. The rotary motor is located at the telescopic end of the telescopic column, and the supporting rotating column is located at the output end of the rotary motor. The supporting rotating column is horizontally positioned inside the filter box and moves within the clearance groove. The sealing plate is rotatably mounted on the supporting rotating column and slides within the side wall of the filter box. The support rod is circumferentially... The insertion rod is horizontally connected to the end of the support rod away from the support column near the sealing plate. A connecting plate is provided at the end of the support column away from the sealing plate. Elastic plates are evenly distributed around the circumference of the connecting plate, and are rotatably connected to it. A torsion spring is provided between the elastic plates and the connecting plate. The evenly distributed elastic plates contact the evenly distributed insertion rods. The cross-sectional diameter of the insertion rod is larger than the width of the support rod. An adsorption column is movably sleeved on the insertion rod. A insertion groove is provided through the side wall of the adsorption column, and the width of the insertion groove is equal to the width of the support rod.

[0014] Furthermore, a feeding trough is provided through the side of the storage box away from the filter box, and a top plate is movably provided inside the storage box. The top plate slides in the feeding trough, and feeding springs are evenly distributed and connected to the bottom wall of the storage box. Adsorption columns are stacked on the top plate. The limiting arc plate is set higher than the filter box, and the limiting arc plate is set opposite to the upper end of the discharging guide rail. The discharging guide rail is J-shaped, and a recycling basket is provided at the lower end of the discharging guide rail.

[0015] Furthermore, the feeding mechanism includes a feeding frame, a feeding motor, a pressure plate, and a top material block. The feeding frame is located on the side wall of the storage box, and a feeding screw is rotatably provided on the inner side of the feeding frame. The feeding motor is located on the feeding frame, and its output end is connected to the feeding screw. The pressure plate is threadedly engaged with the feeding screw and is slidably disposed between the limiting arc plate and the upper end of the storage box. The top material block is located at the end of the pressure plate near the filter box and is slidably disposed on the inner side of the limiting arc plate.

[0016] When the adsorption column on the insertion rod is saturated, it needs to be replaced promptly. At this time, the hydraulic motor operates, and the telescopic column moves the entire adsorption mechanism upwards, causing the uppermost adsorption column to move above the filter box. The position of the adsorption column on the insertion rod then aligns with the upper opening of the limiting arc plate and the feeding guide rail. The feeding motor starts, and the feeding screw rotates, causing the meshing pressure plate to move towards the filter box. The top block pushes out the adsorption column inside the limiting arc plate, aligning the downward-facing insertion slot with the support rod. The new adsorption column pushes the saturated adsorption column, which pushes open the spring plate and slides into the feeding guide rail, rolling along its trajectory into the recycling basket. Meanwhile, the new... The adsorption column is pushed onto the insert rod. The spring plate rebounds and resets under the elastic action of the torsion spring. Then, the feeding motor reverses the feeding screw, resetting the pressure plate and the top block. Under the elastic action of the feeding spring, the top plate moves the next adsorption column to the inside of the limiting arc plate. At this time, the rotary motor rotates, causing the next saturated adsorption column to rotate to the position corresponding to the limiting arc plate. The adsorption columns are replaced sequentially according to the above steps until all adsorption columns on the insert rod have been replaced. Then, the hydraulic motor starts, causing the entire adsorption mechanism to move back into the filter box. The new adsorption column continues to purify the water, realizing automatic replacement of the adsorption column, improving the automation level of the equipment, and reducing labor costs.

[0017] Preferably, the neutralization tank has an inlet on the side away from the sedimentation tank, and a pH detector is installed inside the neutralization tank; the filter tank has an outlet on the side away from the sedimentation tank, and a water quality detector is installed inside the filter tank; a feeding box is provided on the tank cover, and the two feeding boxes are respectively located on the upper part of the neutralization tank and the sedimentation tank, with a solenoid valve at the lower end of the feeding box.

[0018] Preferably, the neutralization tank is equipped with a main controller, which is a PLC controller. The solenoid valve, pH detector, power motor, electric telescopic rod, hydraulic motor, rotary motor, feeding motor and water quality detector are electrically connected to the main controller.

[0019] The beneficial effects achieved by the present invention using the above structure are as follows:

[0020] 1. This invention provides a heavy metal acid wastewater treatment device, which adopts an integrated design, connecting the neutralization tank, sedimentation tank and filtration tank in sequence to form an integrated treatment process of "neutralization, sedimentation, filtration and adsorption". The units work together to reduce the connection loss between equipment and the floor space occupied by the equipment, thereby improving the treatment efficiency.

[0021] 2. Adopting the principle of pre-action, a follow-up cleaning mechanism is set up. By pulling the rod and rotating with the central column, the partition slides, which in turn drives the cleaning brush to open and close, automatically cleaning the impurities on the surface of the filter screen. This avoids the tediousness of manual cleaning, requires no additional power source, and realizes the simultaneous cleaning of the filter screen and the neutralization and mixing of sewage.

[0022] 3. An adsorption mechanism is set up, which makes full contact with the sewage through the rotating adsorption column and realizes automatic replacement of the adsorption column through the automatic material changing mechanism. The number of workers is not required to change it frequently. The degree of automation is high, which solves the problems of limited adsorbent capacity and treatment efficiency decline over time in traditional adsorption methods, and improves the removal effect of low concentration heavy metals. Attached Figure Description

[0023] Figure 1 This invention provides a schematic diagram of the structure of a heavy metal-contaminated acid wastewater treatment device.

[0024] Figure 2 This is a schematic diagram of the combined structure of the neutralization box, sedimentation box, and filter box.

[0025] Figure 3 This is a schematic diagram of the internal structure of the neutralization box, sedimentation box, and filter box.

[0026] Figure 4 This is a schematic diagram of the stirring mechanism;

[0027] Figure 5 This is a schematic diagram of the follow-up cleaning mechanism;

[0028] Figure 6 This is a schematic diagram of the combined structure of the filter box, adsorption mechanism, automatic material changing mechanism and feeding guide rail;

[0029] Figure 7 This is a right view of the adsorption column;

[0030] Figure 8 This is a schematic diagram of the adsorption mechanism;

[0031] Figure 9 This is a schematic diagram of the automatic material changing mechanism;

[0032] Figure 10 Rear view of the automatic material changing mechanism;

[0033] Figure 11 for Figure 10 A schematic diagram of the cross-sectional structure at point AA.

[0034] The components include: 1. Neutralization tank; 2. Sedimentation tank; 3. Filter tank; 4. Tank cover; 5. Feeding tank; 6. Liquid inlet; 7. pH detector; 8. Agitation mechanism; 9. Follow-up cleaning mechanism; 10. Cut-off mechanism; 11. Adsorption mechanism; 12. Automatic material changing mechanism; 13. Discharge guide rail; 14. Recycling basket; 15. Sliding trough; 16. Filter screen; 17. Waste collection box; 18. Connecting ramp; 19. Central rotating column; 20. Agitator frame; 21. Agitator roller; 22. Pull rod; 23. Baffle; 24. Follow-up pull plate; 25. Pull rod; 26. Cleaning brush. 27. Electric telescopic rod; 28. Cut-off plate; 29. ​​Clearance groove; 30. Liquid outlet; 31. Adsorption column; 32. Storage tank; 33. Feeding mechanism; 34. Hydraulic motor; 35. Telescopic column; 36. Rotary motor; 37. Support column; 38. Sealing plate; 39. Support rod; 40. Insertion rod; 41. Connecting plate; 42. Spring plate; 43. Limiting arc plate; 44. Feeding groove; 45. Top plate; 46. Feeding spring; 47. Feeding rack; 48. Feeding screw; 49. Feeding motor; 50. Top block; 51. Pressure plate; 52. Insertion groove. Detailed Implementation

[0035] The technical solution of this patent will be further described in detail below with reference to specific implementations. Any technical features or connection relationships not described in detail in this invention are all existing technologies.

[0036] The present invention will be further described in detail below with reference to the accompanying drawings.

[0037] like Figures 1-11 As shown, the present invention provides a heavy metal-contaminated acid wastewater treatment device, comprising a neutralization tank 1, a sedimentation tank 2, and a filter tank 3, which are sequentially connected. The neutralization tank 1 and sedimentation tank 2 are equipped with a cover 4 on their upper parts, and two feeding boxes 5 are respectively located on the upper parts of the neutralization tank 1 and sedimentation tank 2. A solenoid valve is provided at the lower end of each feeding box 5. The neutralization tank 1 has an inlet 6 on the side away from the sedimentation tank 2, and a pH detector 7 is installed inside the neutralization tank 1. The filter tank 3 has an outlet 30 on the side away from the sedimentation tank 2. The filter box 3 is equipped with a water quality detector; the neutralization box 1 is equipped with a stirring mechanism 8; the sedimentation box 2 is equipped with a moving cleaning mechanism 9; a filter screen 16 is provided between the sedimentation box 2 and the filter box 3; a cutting mechanism 10 is provided on the side of the filter screen 16 near the filter box 3; an adsorption mechanism 11 is provided inside the filter box 3; an automatic material changing mechanism 12 is provided on the outside of the filter box 3; a feeding guide rail 13 is provided on the outer wall of the filter box 3 away from the automatic material changing mechanism 12; the feeding guide rail 13 is J-shaped; and a recycling basket 14 is provided at the lower end of the feeding guide rail 13.

[0038] The stirring mechanism 8 includes a central rotating column 19, which is rotatably mounted on the bottom wall of the neutralization box 1. The central rotating column 19 is driven by a power motor, which is embedded in the lower part of the neutralization box 1. Stirring frames 20 are evenly distributed around the outer wall of the central rotating column 19. The stirring frames 20 are arranged in a U-shape. Stirring rollers 21 are evenly distributed on the inner side of the stirring frames 20. The stirring rollers 21 are located on the outer wall of the central rotating column 19. A pulling rod 22 is vertically provided at the end of the stirring frame 20 away from the central rotating column 19. The pulling rod 22 passes through the upper and lower ends of the stirring frame 20.

[0039] The inner wall of the connection between the neutralization tank 1 and the sedimentation tank 2 is symmetrically provided with sliding grooves 15. The follow-up cleaning mechanism 9 includes a partition 23, which is slidably disposed in the sliding groove 15. The partition 23 is evenly distributed with through holes. The side of the partition 23 near the stirring mechanism 8 is symmetrically provided with follow-up pull plates 24, which are L-shaped. As the central rotating column 19 rotates, the pull rod 22 moves inside the follow-up pull plate 24. The side of the filter screen 16 away from the filter box 3 is symmetrically provided with cleaning brushes 26. The cleaning brushes 26 slide inside the sedimentation tank 2. The two ends of the cleaning brushes 26 are rotatably connected to the four corners of the partition 23 with pull rods 25. The pull rods 25 move against the inner wall of the sedimentation tank 2. When the partition 23 slides close to the filter screen 16, the cleaning brushes 26 move closer to each other. When the partition 23 slides away from the filter screen 16, the cleaning brushes 26 move away from each other.

[0040] The neutralization tank 1 is provided with a connecting ramp 18 on the side near the sedimentation tank 2. The bottom of the sedimentation tank 2 is provided with a waste collection box 17, which is attached to the connecting ramp 18 and has a pull-out structure.

[0041] The cutting mechanism 10 includes an electric telescopic rod 27 and a cutting plate 28. The electric telescopic rod 27 is symmetrically arranged on the outer side wall of the filter box 3. The cutting plate 28 is connected to the output end of the electric telescopic rod 27. The cutting plate 28 slides inside the filter box 3 and slides against the surface of the filter screen 16.

[0042] The side wall of the filter box 3 is provided with a clearance groove 29. The adsorption mechanism 11 includes a hydraulic motor 34, which is located on the outer side wall of the filter box 3. The output end of the hydraulic motor 34 is provided with a telescopic column 35, and the telescopic end of the telescopic column 35 is provided with a rotary motor 36. The output end of the rotary motor 36 is provided with a supporting rotating column 37, which is horizontally located inside the filter box 3 and moves within the clearance groove 29. A sealing plate 38 is rotatably mounted on the supporting rotating column 37 and slides within the side wall of the filter box 3. Support rods 39 are evenly distributed around the circumference of the end of the supporting rotating column 37 near the sealing plate 38. A through rod 40 is horizontally connected to the end of the support rod 39 away from the supporting rotating column 37. An adsorption column 31 is movably sleeved on the through rod 40. A connecting plate 41 is provided at the end of the supporting rotating column 37 away from the sealing plate 38. A spring plate 42 is evenly distributed around the circumference of the connecting plate 41. The spring plate 42 is rotatably connected to the connecting plate 41. A torsion spring is provided between the spring plate 42 and the connecting plate 41. The evenly distributed spring plate 42 contacts the evenly distributed through rod 40. The cross-sectional diameter of the through rod 40 is larger than the width of the support rod 39. An insertion groove 52 is provided through the side wall of the adsorption column 31. The width of the insertion groove 52 is equal to the width of the support rod 39.

[0043] The automatic material changing mechanism 12 includes a storage box 32, which is located on the outer wall of the filter box 3. Adsorption columns 31 are stacked inside the storage box 32. The upper end of the storage box 32 is connected to a limiting arc plate 43, which is arranged in an inverted J shape. The inner arc surface of the limiting arc plate 43 is in contact with the adsorption column 31. The limiting arc plate 43 is set higher than the filter box 3. The limiting arc plate 43 is arranged opposite to the upper end of the unloading guide rail 13. A feeding mechanism 33 is provided on the side wall of the storage box 32.

[0044] A feeding trough 44 is provided through the side of the storage box 32 away from the filter box 3. A top plate 45 is movably provided inside the storage box 32. The top plate 45 slides in the feeding trough 44. Feeding springs 46 are evenly distributed and connected to the bottom wall of the storage box 32. The insertion slots 52 of the adsorption columns 31 are stacked on the top plate 45 with the bottom facing down. The feeding mechanism 33 includes a feeding frame 47, which is located on the side wall of the storage box 32. A feeding screw 48 is rotatably provided on the inner side of the feeding frame 47. A feeding motor 49 is provided on the feeding frame 47. The output end of the feeding motor 49 is connected to the feeding screw 48. A pressure plate 51 is threadedly engaged on the feeding screw 48. The pressure plate 51 is slidably provided between the limiting arc plate 43 and the upper end of the storage box 32. A top material block 50 is provided at the end of the pressure plate 51 near the filter box 3. The top material block 50 is slidably provided on the inner side of the limiting arc plate 43.

[0045] The neutralization box 1 is equipped with a main controller, which is a PLC controller. The solenoid valve, pH detector 7, power motor, electric telescopic rod 27, hydraulic motor 34, rotary motor 36, feeding motor 49 and water quality detector are electrically connected to the main controller.

[0046] Working principle and workflow:

[0047] In practical use, the operator presses down the top plate 45 through the part of the top plate 45 that extends beyond the storage box 32, compressing the feeding spring 46, and then making the insertion slot 52 of the adsorption column 31 face downwards. The adsorption columns 31 are then placed into the storage box 32 one by one from the opening of the limiting arc plate 43 near the filter box 3. After placing multiple adsorption columns 31 at once, the top plate 45 is released. Under the elastic pressure of the feeding spring 46, the uppermost adsorption column 31 is pushed to the inside of the limiting arc plate 43. The insertion slot 52 of the previous adsorption column 31 contacts and engages with the arc surface of the next adsorption column 31, so that the stacked adsorption columns 31 are in a uniform state with the insertion slot 52 facing downwards. At this time, the top material block 50 contacts one end of the uppermost adsorption column 31.

[0048] The main controller is activated, and heavy metal-laden acid wastewater is injected into neutralization tank 1 through inlet 6 and flows into sedimentation tank 2 through the through-holes on partition 23. pH detector 7 operates to monitor the pH value of the wastewater in real time. The solenoid valve of feed box 5 on neutralization tank 1 opens, allowing the lime stored therein to be added into neutralization tank 1. The power motor starts, and the central rotating column 19 rotates, driving the stirring frame 20 and stirring roller 21 to agitate and mix the wastewater and lime in neutralization tank 1. As the stirring frame 20 rotates, the pull rod 22 slides into the inner side of the follower plate 24 as it approaches partition 23. Driven by the circular motion of the pull rod 22, partition 23 slides back and forth in the sliding groove 15. When the pull rod 22 rotates away from partition 23, the next pull rod 22 slides into the inner side of the follower plate 24 again, driving partition 23 to reciprocate. The reciprocating sliding of partition 23 enhances the agitation of neutralization tank 1. Depending on the agitation intensity of the wastewater in sedimentation tank 2, when the pH of the wastewater detected by pH detector 7 reaches 8 to 10, the solenoid valve of the feeding tank 5 on neutralization tank 1 is closed, and the solenoid valve of the feeding tank 5 on sedimentation tank 2 is opened simultaneously, allowing sodium sulfide in feeding tank 5 to be added into sedimentation tank 2. Sodium sulfide dissociates into S2- in the water and reacts with heavy metal ions in the wastewater to form precipitates. During this process, the baffle 23 slides back and forth. When the baffle 23 slides close to the filter screen 16, the upper and lower symmetrical cleaning brushes 26 move closer to each other under the pressure of the pull rod 25. When the baffle 23 slides away from the filter screen 16, the upper and lower symmetrical cleaning brushes 26 move away from each other under the pull of the pull rod 25. Thus, the sliding of the baffle 23 directly drives the cleaning brushes 26 to perform timely reciprocating brushing of the filter screen 16, realizing automatic cleaning of the filter screen 16, avoiding clogging of the filter screen 16, and allowing the reaction precipitates to settle into the waste collection box 17.

[0049] Subsequently, the electric telescopic rod 27 is activated, causing the cut-off plate 28 to move upward and lift, connecting the sedimentation tank 2 and the filter tank 3. The water after neutralization and sedimentation treatment flows into the filter tank 3 through the filter screen 16. The water quality detector works to detect whether the water quality has reached the discharge level. At this time, the rotary motor 36 is activated, supporting the rotating column 37 to rotate, driving the support rod 39 and the insertion rod 40 to rotate, thereby causing the adsorption column 31 to rotate in the water, continuously adsorbing the residual impurities in the water until the water quality detector detects that the water quality meets the standard, and then the outlet 30 is opened for discharge.

[0050] If the water quality detector still fails to meet the standards after the rotary motor 36 has been working continuously for two hours, it indicates that the adsorption column 31 has reached adsorption saturation and can no longer adsorb impurities. At this point, the rotary motor 36 stops working. The rotary motor 36 is a stepper motor. When it stops working, one set of support rods 39 and insert rods 40 are vertically oriented upwards. Subsequently, the hydraulic motor 34 works, the telescopic column 35 extends, driving the entire adsorption mechanism 11 upwards. The support rotating column 37 moves upwards within the relief groove 29, causing... The uppermost adsorption column 31 moves upward to the top of the filter box 3. At this time, the position of the adsorption column 31 corresponds to the upper opening position of the limiting arc plate 43 and the feeding guide rail 13. The feeding motor 49 starts, and the feeding screw 48 rotates, causing the pressure plate 51 meshing with it to move towards the filter box 3. The top block 50 pushes out the adsorption column 31 inside the limiting arc plate 43. During this period, the pressure plate 51 presses down on the lower adsorption column 31 to prevent it from moving upward. The downward-facing insertion groove 52 is positioned opposite to the support rod 39. In response, the new adsorption column 31 pushes the saturated adsorption column 31, which pushes open the spring plate 42 and slides into the unloading guide rail 13, rolling along the track of the unloading guide rail 13 into the recycling basket 14. Meanwhile, the new adsorption column 31 is pushed and sleeved onto the insert rod 40. The spring plate 42 rebounds and resets under the elastic action of the torsion spring. Subsequently, the feeding motor 49 reverses the feeding screw 48, causing the pressure plate 51 and the top block 50 to reset. Under the elastic action of the feeding spring 46, the top plate 45 causes the next... The adsorption column 31 moves to the inside of the limiting arc plate 43. At this time, the rotary motor 36 rotates, causing the next saturated adsorption column 31 to rotate to the position corresponding to the limiting arc plate 43. The adsorption columns 31 are replaced in sequence according to the above steps until all the adsorption columns 31 on the insertion rod 40 have been replaced. Then, the hydraulic motor 34 starts, causing the entire adsorption mechanism 11 to move back into the filter box 3. The new adsorption column 31 continues to purify the water. The staff can then collect the saturated adsorption column 31 and perform a restoration process.

[0051] After the sewage treatment is completed, pull out the waste collection box 17 and dispose of the sludge and waste that has settled inside separately.

[0052] The above is the overall workflow of this invention. Simply repeat this process the next time you use it.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0055] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A heavy metal-contaminated acid wastewater treatment device, comprising a neutralization tank, a sedimentation tank, and a filter tank, characterized in that: The neutralization box, sedimentation box, and filter box are connected in sequence. The filter box is equipped with an adsorption mechanism that rotates inside. The filter box is equipped with an automatic material changing mechanism on the outside. The filter box is equipped with a feeding guide rail on the outer wall of the side away from the automatic material changing mechanism. The automatic material changing mechanism includes a storage box and a feeding mechanism. The storage box is located on the outer wall of the filter box. Adsorption columns are stacked inside the storage box. A limiting arc plate is connected to the upper end of the storage box. The limiting arc plate is arranged in an inverted J shape. The inner arc surface of the limiting arc plate is in contact with the adsorption columns. The feeding mechanism is located on the side wall of the storage box. The filter box has a clearance groove running through its side wall. The adsorption mechanism includes a hydraulic motor, a rotary motor, a support column, a sealing plate, a support rod, and an insert rod. The hydraulic motor is located on the outer side wall of the filter box, and the output end of the hydraulic motor has a telescopic column. The rotary motor is located at the telescopic end of the telescopic column, and the support column is located at the output end of the rotary motor. The support column is horizontally located inside the filter box and moves within the clearance groove. The sealing plate is rotatably mounted on the support column and slides within the side wall of the filter box. The support rods are evenly distributed circumferentially at the ends of the support column near the sealing plate, and the insert rod is horizontally connected to the ends of the support rods away from the support column. The end of the supporting rotating column away from the sealing plate is provided with a connecting plate. The connecting plate is circumferentially distributed with elastic plates, which are rotatably connected to the connecting plate. A torsion spring is provided between the elastic plates and the connecting plate. The circumferentially distributed elastic plates contact the circumferentially distributed insert rods. The cross-sectional diameter of the insert rods is larger than the width of the supporting rod. An adsorption column is movably sleeved on the insert rod. The side wall of the adsorption column is provided with a through-hole. The width of the through-hole is equal to the width of the supporting rod. The storage box has a feeding trough extending through the side away from the filter box. The storage box has a movable top plate inside, which slides in the feeding trough. Feeding springs are evenly distributed between the top plate and the bottom wall of the storage box, and the adsorption columns are stacked on the top plate. The limiting arc plate is set higher than the filter box, and the limiting arc plate is set opposite to the upper end of the feeding guide rail. The feeding guide rail is J-shaped, and a recycling basket is provided at the lower end of the feeding guide rail. The feeding mechanism includes a feeding frame, a feeding motor, a pressure plate, and a top material block. The feeding frame is located on the side wall of the storage box. A feeding screw is rotatably provided on the inner side of the feeding frame. The feeding motor is located on the feeding frame, and its output end is connected to the feeding screw. The pressure plate is threadedly engaged with the feeding screw and is slidably disposed between the limiting arc plate and the upper end of the storage box. The top material block is located at the end of the pressure plate near the filter box and is slidably disposed on the inner side of the limiting arc plate.

2. The heavy metal-contaminated acid wastewater treatment equipment according to claim 1, characterized in that: The neutralization tank and the sedimentation tank are equipped with lids. The neutralization tank is equipped with a stirring mechanism, and the sedimentation tank is equipped with a movable follow-up cleaning mechanism. A filter screen is provided between the sedimentation tank and the filter tank, and a cutting mechanism is provided on the side of the filter screen near the filter tank. The follow-up cleaning mechanism includes a partition and a cleaning brush. The partition is slidably disposed on the inner wall of the sedimentation tank and has through holes evenly distributed on it. The side of the partition near the stirring mechanism is symmetrically provided with follow-up pull plates, which are L-shaped. The cleaning brush is symmetrically slidably disposed on the side of the filter screen away from the filter tank and slides inside the sedimentation tank. The two ends of the cleaning brush are rotatably connected to the four corners of the partition with pull rods. When the partition slides closer to the filter screen, the cleaning brushes move closer to each other; when the partition slides away from the filter screen, the cleaning brushes move away from each other.

3. The heavy metal-contaminated acid wastewater treatment equipment according to claim 2, characterized in that: The stirring mechanism includes a central rotating column, a stirring frame, and a pulling rod. The central rotating column is rotatably mounted on the bottom wall of the neutralization tank and is driven by a power motor. The stirring frame is evenly distributed around the outer wall of the central rotating column and is arranged in a U-shape. Stirring rollers are evenly distributed on the inner side of the stirring frame and are located on the outer wall of the central rotating column. The pulling rod is vertically mounted at the end of the stirring frame away from the central rotating column and passes through both the upper and lower ends of the stirring frame. As the central rotating column rotates, the pulling rod moves inside the follower plate.

4. The heavy metal-contaminated acid wastewater treatment equipment according to claim 3, characterized in that: The inner wall of the connection between the neutralization box and the sedimentation box is symmetrically provided with sliding grooves, the partition slides in the sliding grooves, and the pull rod moves against the inner side wall of the sedimentation box. The neutralization tank is provided with a connecting ramp on the side near the sedimentation tank, and a waste collection box is slidably provided at the bottom of the sedimentation tank. The waste collection box overlaps on the connecting ramp and has a pull-out structure.

5. The heavy metal-contaminated acid wastewater treatment equipment according to claim 4, characterized in that: The cutting mechanism includes an electric telescopic rod and a cutting plate. The electric telescopic rod is symmetrically arranged on the outer wall of the filter box. The cutting plate is connected to the output end of the electric telescopic rod. The cutting plate slides inside the filter box and slides against the surface of the filter screen.

6. The heavy metal-contaminated acid wastewater treatment equipment according to claim 5, characterized in that: The neutralization tank has an inlet on the side away from the sedimentation tank, and a pH detector is installed inside the neutralization tank; the filter tank has an outlet on the side away from the sedimentation tank, and a water quality detector is installed inside the filter tank; a feeding box is provided on the tank cover, and two feeding boxes are respectively located on the upper part of the neutralization tank and the sedimentation tank, and a solenoid valve is provided at the lower end of the feeding box.

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