Heavy metal acidic wastewater treatment equipment

Abstract

The invention belongs to the technical field of wastewater treatment equipment, and particularly provides heavy metal contaminated acid wastewater treatment equipment which comprises a neutralizing tank, a settling tank and a filtering tank which are sequentially connected, a stirring mechanism is arranged in the neutralizing tank, a follow-up cleaning mechanism is movably arranged in the settling tank, and a stirring mechanism is arranged in the filtering tank. A filter screen is arranged between the settling box and the filter box, a cut-off mechanism is arranged on the side, close to the filter box, of the filter screen, an adsorption mechanism is rotationally arranged in the filter box, an automatic material changing mechanism is arranged on the outer side of the filter box, and a discharging guide rail is arranged on the outer wall of the side, away from the automatic material changing mechanism, of the filter box; the heavy metal polluted acid wastewater treatment equipment provided by the invention can timely clean the filter screen and automatically replace the adsorption column, an integrated treatment process of'neutralization, precipitation, filtration and adsorption 'is formed through the neutralization tank, the precipitation tank and the filter tank, and the connection loss and the occupied area of the equipment are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment equipment, and in particular relates to heavy metal contaminated acid wastewater treatment equipment. Background Art

[0002] Heavy metal-contaminated acid wastewater refers to industrial wastewater containing high concentrations of heavy metal ions and acidic substances, primarily from industries such as non-ferrous metal smelting, chemical processing, electroplating, and mining. Heavy metal-contaminated acid wastewater is highly toxic, causes widespread pollution, and is difficult to degrade. If discharged without proper treatment, it can cause serious harm to soil, water, and the ecological environment, and can even accumulate through the food chain and affect human health.

[0003] Existing heavy metal-contaminated acid wastewater treatment equipment separates the steps of acid neutralization, heavy metal precipitation, and sediment filtration during purification, which increases the connection energy consumption between equipment and the equipment's floor space, resulting in low treatment efficiency and difficulty in timely cleaning of the filter screen. In the existing technology, adsorption is used to treat low-concentration heavy metal wastewater, but due to the limited capacity of the adsorbent, manual replacement is difficult and easily leads to response delays, reducing treatment efficiency and increasing labor intensity. Summary of the Invention

[0004] In order to solve the above-mentioned existing problems, the present invention provides a heavy metal acid wastewater treatment equipment that can timely clean the filter screen and automatically replace the adsorption column. Through the neutralization box, sedimentation box and filter box, an integrated treatment process of "neutralization, sedimentation, filtration and adsorption" is formed, reducing the connection loss and floor space of the equipment.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: The present invention provides a heavy metal acid wastewater treatment equipment, including a neutralization box, a sedimentation box and a filter box, the neutralization box, the sedimentation box and the filter box are connected in sequence, the upper parts of the neutralization box and the sedimentation box are provided with box covers, the neutralization box is provided with a stirring mechanism, the sedimentation box is provided with a follow-up cleaning mechanism, a filter screen is provided between the sedimentation box and the filter box, the filter screen is provided with a cut-off mechanism on the side close to the filter box, the filter box is provided with an adsorption mechanism for rotation inside, the outside of the filter box is provided with an automatic material changing mechanism, and the outer wall of the filter box away from the automatic material changing mechanism is provided with a feeding guide rail.

[0006] Further, the follow-up cleaning mechanism includes a partition board and a cleaning brush. The partition board is slidably arranged on the inner side wall of the sedimentation tank. The partition board is uniformly provided with through holes. On the side of the partition board close to the stirring mechanism, follow-up pulling plates are symmetrically arranged up and down. The follow-up pulling plates are L-shaped. The cleaning brushes are symmetrically slidably arranged on the side of the filter net away from the filter tank. The cleaning brushes slide inside the sedimentation tank. Pulling rods are rotatably connected between the two ends of the cleaning brushes and the four corners of the partition board respectively; when the partition board slides close to the filter net, the cleaning brushes approach each other, and when the partition board slides away from the filter net, the cleaning brushes move away from each other.

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

[0008] Further, the stirring mechanism includes a central rotating column, a stirring frame and a pulling rod. The central rotating column is rotatably arranged on the bottom wall of the neutralizing tank. The central rotating column is driven by a power motor. The power motor is embedded in the lower part of the neutralizing tank. The stirring frames are evenly distributed around the outer wall of the central rotating column. The stirring frames are in a U shape. Stirring rollers are evenly arranged inside the stirring frames. The stirring rollers are arranged on the outer wall of the central rotating column. The pulling rod is vertically arranged at the end of the stirring frame away from the central rotating column. The pulling rod penetrates through the upper and lower ends of the stirring frame. As the central rotating column rotates, the pulling rod moves inside the follow-up pulling plate; During use, the central rotating column rotates to drive the stirring frame and the stirring rollers to stir and mix the sewage in the neutralizing tank to adjust the pH value of the sewage. During the rotation of the stirring frame, when the pulling rod approaches the partition board along with the stirring frame, the pulling rod slides into the inside of the follow-up pulling plate. Under the drive of the pulling rod moving in an arc trajectory, the partition board slides back and forth. When the pulling rod rotates away from the partition board, the next pulling rod slides into the inside of the follow-up pulling plate again to drive the partition board to reciprocate; when the partition board reciprocates, the stirring intensity of the sewage in the neutralizing tank and the sedimentation tank is enhanced, and the neutralization treatment efficiency of the acidic waste water is accelerated; When the partition board slides close to the filter net, under the extrusion of the pulling rod, the cleaning brushes symmetrically arranged up and down approach each other. When the partition board slides away from the filter net, under the pulling of the pulling rod, the cleaning brushes symmetrically arranged up and down move away from each other. Thus, the cleaning brushes are directly driven by the sliding of the partition board to reciprocally brush the filter net in time, realizing the automatic cleaning of the filter net and avoiding the blockage of the filter net.

[0009] 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 groove, and the pulling rod moves in contact with the inner wall of the sedimentation box; the neutralization box is provided with a connecting slope on the side close to the sedimentation box, and a waste collecting box is slidably provided at the bottom of the sedimentation box, and the waste collecting box is overlapped on the connecting slope, and the waste collecting box is a pull-out structure.

[0010] 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. The cutting plate is connected to the output end of the electric telescopic rod. The cutting plate slides in the filter box and slides and fits with the surface of the filter screen.

[0011] Furthermore, a side wall of the filter box is penetrated by a give way groove, and the adsorption mechanism includes a hydraulic motor, a rotary motor, a support column, a blocking plate, a support rod and an insertion rod. The hydraulic motor is arranged on the outer wall of the filter box, and the output end of the hydraulic motor is provided with a telescopic column, the rotary motor is arranged at the telescopic end of the telescopic column, the support column is arranged at the output end of the rotary motor, the support column is horizontally arranged in the filter box, the support column moves in the give way groove, the blocking plate is rotatably arranged on the support column, the blocking plate is slidably arranged in the side wall of the filter box, and the circumference of the support rod is uniform. The end of the supporting column is distributed near the blocking plate, and the insertion rod is horizontally connected to the end of the supporting column away from the supporting column; the end of the supporting column away from the blocking plate is provided with a connecting plate, and elastic plates are evenly distributed on the connecting plate, and the elastic plates are rotatably connected to the connecting plate. A torsion spring is provided between the elastic plate and the connecting plate, and the elastic plates evenly distributed on the circumference are in contact with the insertion rods evenly distributed on the circumference, and the cross-sectional diameter of the insertion rod is greater than the width of the support rod; an adsorption column is movably sleeved on the insertion rod, and a plug-in groove is penetrated through the side wall of the adsorption column, and the groove width of the plug-in groove is equal to the width of the support rod.

[0012] Furthermore, a feeding chute is provided on one side of the storage box away from the filter box, a top plate is movably provided inside the storage box, the top plate slides in the feeding chute, the top plate and the bottom wall of the storage box are evenly connected with feeding springs, and adsorption columns are stacked on the top plate; the limiting arc plate is arranged higher than the filter box, the limiting arc plate is arranged opposite to the upper end of the feeding guide rail, the feeding guide rail is arranged in a J shape, and a recovery basket is provided at the lower end of the feeding guide rail; Furthermore, the feeding mechanism includes a feeding rack, a feeding motor, a pressure plate and a lifting block. The feeding rack is arranged on the side wall of the storage box. A feeding screw is rotatably provided on the inner side of the feeding rack. The feeding motor is arranged on the feeding rack. The output end of the feeding motor is connected to the feeding screw. The pressure plate is threadedly engaged and sleeved on the feeding screw. The pressure plate is slidably arranged between the limiting arc plate and the upper end of the storage box. The lifting block is arranged at the end of the pressure plate close to the filter box, and the lifting block is slidably arranged on the inner side of the limiting arc plate.

[0013] When the adsorption column on the insertion rod is in a saturated state, it needs to be replaced in time. At this time, the hydraulic motor works, and the telescopic column drives the entire adsorption mechanism to move upward, so that the uppermost adsorption column moves to the top of the filter box. At this time, the position of the adsorption column on the insertion rod corresponds to the upper opening position of the limit arc plate and the unloading guide rail. The feeding motor starts, and the feeding screw rotates to move the engaged pressure plate toward the filter box. The ejecting block ejects the adsorption column on the inner side of the limit arc plate, toward the lower insertion groove corresponding to the position of the support rod. The new adsorption column pushes the saturated adsorption column, and the saturated adsorption column pushes the elastic plate and slides into the unloading guide rail, and rolls into the recovery basket along the trajectory of the unloading guide rail. The adsorption column is pushed and sleeved on the insertion rod, and the elastic plate rebounds and resets under the elastic action of the torsion spring. Then the feeding motor reverses the feeding screw to reset the pressure plate and the ejecting block. Under the elastic action of the feeding spring, the ejecting plate moves the next adsorption column to the inside of the limit arc plate. At this time, the rotary motor rotates to make the next saturated adsorption column rotate to the position corresponding to the limit arc plate. The adsorption columns are replaced in sequence according to the above steps until all the adsorption columns on the insertion rod are replaced. The hydraulic motor starts to move the entire adsorption mechanism back into the filter box. The new adsorption column continues to purify the water, realizing the automatic replacement of the adsorption column, improving the degree of automation of the equipment, and reducing labor costs.

[0014] Preferably, the neutralization box is provided with a liquid inlet on the side away from the sedimentation box, and a pH detector is provided inside the neutralization box; the filter box is provided with a liquid outlet on the side away from the sedimentation box, and a water quality detector is provided inside the filter box; a feeding box is provided on the box cover, and the two feeding boxes are respectively provided on the upper part of the neutralization box and the sedimentation box, and a solenoid valve is provided at the lower end of the feeding box.

[0015] Preferably, a main controller is provided on the neutralization box, and the main controller adopts a PLC controller. The solenoid valve, pH detector, power motor, electric telescopic rod, hydraulic motor, rotating motor, feeding motor and water quality detector are electrically connected to the main controller respectively.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: 1. The present invention provides a heavy metal acid wastewater treatment equipment, which adopts an integrated design and connects the neutralization box, sedimentation box and filter box in sequence to form an integrated treatment process of "neutralization, precipitation, filtration and adsorption". The various units operate in coordination to reduce the connection loss between equipment and the equipment's footprint, thereby improving treatment efficiency.

[0017] 2. The pre-action principle is adopted and a follow-up cleaning mechanism is set up. By pulling the rod and rotating with the central rotating column, the partition is driven to slide, and then the cleaning brush is driven to open and close, automatically cleaning the impurities on the surface of the filter, avoiding the tedious manual cleaning. No additional power source is required, and the cleaning of the filter and the neutralization and stirring of the sewage are carried out simultaneously.

[0018] 3. An adsorption mechanism is set up to fully contact the sewage through the rotating adsorption column, and the automatic replacement of the adsorption column is realized through the automatic material changing mechanism. There is no need for workers to frequently replace it. The degree of automation is high, which solves the problems of limited adsorbent capacity and decreased treatment efficiency over time in traditional adsorption methods, and improves the removal effect of low-concentration heavy metals. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a heavy metal acid wastewater treatment device provided by the present invention; Figure 2 It is a schematic diagram of the combined structure of the neutralization tank, the sedimentation tank and the filter tank; Figure 3 Schematic diagram of the internal structure of the neutralization tank, sedimentation tank and filtration tank; Figure 4 Schematic diagram of the structure of the stirring mechanism; Figure 5 It is a structural diagram of the follow-up type cleaning mechanism; Figure 6 It is a schematic diagram of the combined structure of the filter box, adsorption mechanism, automatic material changing mechanism and unloading guide rail; Figure 7 It is the right view of the adsorption column; Figure 8 It is a structural diagram of the adsorption mechanism; Figure 9 It is a structural diagram of the automatic material changing mechanism; Figure 10 This is the rear view of the automatic material change mechanism; Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure at AA in the middle.

[0020] Among them, 1. Neutralization box, 2. Sedimentation box, 3. Filter box, 4. Box cover, 5. Feeding box, 6. Liquid inlet, 7. pH detector, 8. Stirring mechanism, 9. Follow-up cleaning mechanism, 10. Cutting mechanism, 11. Adsorption mechanism, 12. Automatic material changing mechanism, 13. Unloading guide rail, 14. Recovery basket, 15. Sliding trough, 16. Filter screen, 17. Waste collection box, 18. Connecting slope, 19. Center rotating column, 20. Stirring frame, 21. Stirring roller, 22. Pull rod, 23. Partition, 24. Follow-up pull plate, 25. Pull rod, 26. Cleaning brush, 27. Electric telescopic rod, 28. Cut-off plate, 29. Make way slot, 30. Liquid outlet, 31. Adsorption column, 32. Storage box, 33. Feeding mechanism, 34. Hydraulic motor, 35. Telescopic column, 36. Rotating motor, 37. Supporting rotating column, 38. Sealing plate, 39. Support rod, 40. Inserting rod, 41. Connecting plate, 42. Elastic plate, 43. Limiting arc plate, 44. Feeding trough, 45. Top plate, 46. Feeding spring, 47. Feeding rack, 48. Feeding screw, 49. Feeding motor, 50. Ejecting block, 51. Press plate, 52. Connecting slot. DETAILED DESCRIPTION

[0021] The technical solution of this patent is further described in detail below in conjunction with specific implementations. The technical features or connection relationships described in the present invention that are not described in detail are all existing technologies adopted.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figures 1-11 As shown, the present invention provides a heavy metal contaminated acid wastewater treatment equipment, including a neutralization box 1, a sedimentation box 2 and a filter box 3, the neutralization box 1, the sedimentation box 2 and the filter box 3 are connected in sequence, the upper part of the neutralization box 1 and the sedimentation box 2 is provided with a box cover 4, the box cover 4 is provided with a feeding box 5, the two feeding boxes 5 are respectively provided on the upper part of the neutralization box 1 and the sedimentation box 2, the lower end of the feeding box 5 is provided with a solenoid valve, the side of the neutralization box 1 away from the sedimentation box 2 is provided with a liquid inlet 6, and the inside of the neutralization box 1 is provided with a pH detector 7; the side of the filter box 3 away from the sedimentation box 2 is provided with a liquid outlet 30, A water quality detector is provided inside the filter box 3; a stirring mechanism 8 is provided inside the neutralization box 1, a follow-up cleaning mechanism 9 is provided inside the sedimentation box 2, a filter screen 16 is provided between the sedimentation box 2 and the filter box 3, a cut-off mechanism 10 is provided on the side of the filter screen 16 close to the filter box 3, an adsorption mechanism 11 is provided inside the filter box 3 for rotation, an automatic material changing mechanism 12 is provided on the outside of the filter box 3, a discharge guide rail 13 is provided on the outer wall of the filter box 3 away from the automatic material changing mechanism 12, and the discharge guide rail 13 is arranged in a J shape, and a recovery basket 14 is provided at the lower end of the discharge guide rail 13.

[0024] The stirring mechanism 8 includes a central rotating column 19. The central rotating column 19 is rotatably arranged on the bottom wall of the neutralizing box 1. The central rotating column 19 is driven by a power motor. The power motor is embedded in the lower part of the neutralizing box 1. Stirring frames 20 are circumferentially and evenly distributed on 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 sides of the stirring frames 20. The stirring rollers 21 are arranged on the outer wall of the central rotating column 19. Pulling rods 22 are vertically arranged at the ends of the stirring frames 20 far from the central rotating column 19. The pulling rods 22 penetrate through the upper and lower ends of the stirring frames 20.

[0025] On the inner walls at the connection between the neutralizing box 1 and the precipitation box 2, sliding grooves 15 are symmetrically arranged. The follow-up cleaning mechanism 9 includes a partition plate 23. The partition plate 23 is slidably arranged in the sliding grooves 15. Through holes are evenly distributed on the partition plate 23. On the side of the partition plate 23 close to the stirring mechanism 8, follow-up pulling plates 24 are symmetrically arranged up and down. The follow-up pulling plates 24 are arranged in an L shape. As the central rotating column 19 rotates, the pulling rods 22 move inside the follow-up pulling plates 24. On the side of the filter screen 16 far from the filter box 3, cleaning brushes 26 are symmetrically arranged and slide up and down. The cleaning brushes 26 slide inside the precipitation box 2. Pulling rods 25 are rotatably connected between the two ends of the cleaning brushes 26 and the four corners of the partition plate 23 respectively. The pulling rods 25 move in contact with the inner side wall of the precipitation box 2. When the partition plate 23 slides close to the filter screen 16, the cleaning brushes 26 approach each other. When the partition plate 23 slides away from the filter screen 16, the cleaning brushes 26 move away from each other. On one side of the neutralizing box 1 close to the precipitation box 2, a connecting slope 18 is arranged. A waste collection box 17 is slidably arranged at the bottom of the precipitation box 2. The waste collection box 17 is lapped on the connecting slope 18. The waste collection box 17 is of a pull-out structure.

[0026] The truncating mechanism 10 includes an electric telescopic rod 27 and a truncating plate 28. The electric telescopic rods 27 are symmetrically arranged on the outer side wall of the filter box 3. The truncating plate 28 is connected to the output end of the electric telescopic rod 27. The truncating plate 28 slides inside the filter box 3. The truncating plate 28 is in sliding fit with the surface of the filter screen 16.

[0027] The side wall of the filter box 3 is penetrated by a give way groove 29, and the adsorption mechanism 11 includes a hydraulic motor 34, which is arranged on the outer wall of the filter box 3, and a telescopic column 35 is provided at the output end of the hydraulic motor 34, and a rotary motor 36 is provided at the telescopic end of the telescopic column 35, and a supporting column 37 is provided at the output end of the rotary motor 36. The supporting column 37 is horizontally arranged in the filter box 3, and the supporting column 37 moves in the give way groove 29. A blocking plate 38 is rotatably provided on the supporting column 37, and the blocking plate 38 is slidably arranged in the side wall of the filter box 3, and support rods 39 are evenly distributed on the circumference of the end of the supporting column 37 near the blocking plate 38. The end of the support rod 39 away from the supporting rotating column 37 is horizontally connected to the insertion rod 40, and the insertion rod 40 is movably sleeved with an adsorption column 31, and the end of the supporting rotating column 37 away from the blocking plate 38 is provided with a connecting plate 41, and the connecting plate 41 is evenly distributed with elastic plates 42. The elastic plates 42 are rotatably connected to the connecting plate 41, and a torsion spring is provided between the elastic plates 42 and the connecting plate 41. The circumferentially uniformly distributed elastic plates 42 are in contact with the circumferentially uniformly distributed insertion rods 40. The cross-sectional diameter of the insertion rod 40 is larger than the width of the support rod 39. The side wall of the adsorption column 31 is penetrated by a plug-in groove 52, and the groove width of the plug-in groove 52 is equal to the width of the support rod 39.

[0028] The automatic material changing mechanism 12 includes a material storage box 32, which is arranged on the outer wall of the filter box 3. The interior of the material storage box 32 is stacked with adsorption columns 31. The upper end of the material storage box 32 is connected to a limiting arc plate 43, and the limiting arc plate 43 is arranged in an inverted J shape. The inner curved surface of the limiting arc plate 43 fits with the adsorption column 31. The limiting arc plate 43 is arranged higher than the filter box 3. The limiting arc plate 43 is arranged opposite to the upper end of the unloading guide rail 13, and a loading mechanism 33 is provided on the side wall of the material storage box 32.

[0029] The material storage box 32 is provided with a loading chute 44 on one side away from the filter box 3. The material storage box 32 is provided with a top plate 45 for internal movement. The top plate 45 slides in the loading chute 44. The top plate 45 and the bottom wall of the material storage box 32 are evenly connected with loading springs 46. The plug-in slots 52 of the adsorption columns 31 are stacked on the top plate 45 in sequence facing downward; the loading mechanism 33 includes a loading rack 47, and the loading rack 47 is provided on the side wall of the material storage box 32. The inner side of the loading rack 47 is rotatably provided with a loading screw 48, and a loading motor 49 is provided on the loading rack 47. The output end of the loading motor 49 is connected to the loading screw 48, and a pressure plate 51 is threadedly engaged on the loading screw 48. The pressure plate 51 is slidably provided between the limit arc plate 43 and the upper end of the material storage box 32. The end of the pressure plate 51 near the filter box 3 is provided with a top material block 50, and the top material block 50 is slidably provided on the inner side of the limit arc plate 43.

[0030] The neutralization box 1 is provided with a main controller, which adopts 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 respectively.

[0031] Working principle and workflow: During specific use, the staff presses down the top plate 45 through the part of the top plate 45 that extends beyond the storage box 32, compresses the feeding spring 46, and then makes the plug-in slot 52 of the adsorption column 31 face downward, and puts the adsorption columns 31 into the storage box 32 from the opening of the limiting arc plate 43 near one end of the filter box 3 in turn. After putting in multiple adsorption columns 31 at one time, release the top plate 45, and under the elastic pressure of the feeding spring 46, the top adsorption column 31 is pushed to the inner side of the limiting arc plate 43, and the plug-in slot 52 of the upper 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 unified state with the plug-in slot 52 facing downward. At this time, the lifting block 50 contacts one end of the adsorption column 31 of the uppermost layer.

[0032] Start the main controller, and the heavy metal acid wastewater is injected into the neutralization box 1 through the liquid inlet 6, and flows into the sedimentation box 2 through the through hole on the partition 23. The pH detector 7 works to detect the pH value of the wastewater in real time. The solenoid valve of the feeding box 5 on the neutralization box 1 is opened, so that the lime stored therein is added to the neutralization box 1, the power motor is started, and the central rotating column 19 rotates, driving the stirring frame 20 and the stirring roller 21 to stir and mix the sewage and lime in the neutralization box 1. In the process of the rotation of the stirring frame 20, the pulling rod 22 slides into the inner side of the follower pull plate 24 as the stirring frame 20 approaches the partition 23. Driven by the circular arc motion of the pulling rod 22, the partition 23 slides back and forth in the sliding groove 15. When the pulling rod 22 rotates away from the partition 23, the next pulling rod 22 slides into the inner side of the follower pull plate 24 again, driving the partition 23 to reciprocate; when the partition 23 slides back and forth, it enhances the neutralization box 1 The stirring intensity of the sewage in the sedimentation tank 2 is such that when the pH of the sewage detected by the pH detector 7 reaches 8 to 10, the solenoid valve of the feeding box 5 on the neutralization tank 1 is closed, and the solenoid valve of the feeding box 5 on the sedimentation tank 2 is opened at the same time, and the sodium sulfide in the feeding box 5 is put into the sedimentation tank 2. The sodium sulfide dissociates into S2- in the water and reacts with the heavy metal ions in the wastewater to generate precipitate. In this process, the partition 23 slides back and forth. When the partition 23 slides close to the filter screen 16, under the squeezing of the pulling rod 25, the upper and lower symmetrical cleaning brushes 26 approach each other. When the partition 23 slides away from the filter screen 16, under the pulling of the pulling rod 25, the upper and lower symmetrical cleaning brushes 26 move away from each other, thereby directly driving the cleaning brush 26 through the sliding of the partition 23 to brush the filter screen 16 back and forth in time, thereby realizing automatic cleaning of the filter screen 16, avoiding clogging of the filter screen 16, and the reaction precipitate settles into the waste collection box 17.

[0033] Then the electric telescopic rod 27 is started, causing the cut-off plate 28 to move upward and connect the sedimentation box 2 with the filter box 3. The water after neutralization and sedimentation treatment flows into the filter box 3 through the filter screen 16, and the water quality detector works to detect whether the water quality reaches the dischargeable level; at this time, the rotating motor 36 is started, the supporting rotating column 37 rotates, driving the supporting rod 39 and the interlaced rod 40 to rotate, and then the adsorption column 31 rotates in the water, continuously adsorbing impurities remaining in the water, until the water quality detector detects that the water quality meets the standard, and the liquid outlet 30 is opened for discharge.

[0034] When the rotating motor 36 works continuously for two hours and the water quality detector detects that the water quality is still not up to standard, it means that the adsorption column 31 has reached the adsorption saturation state and can no longer adsorb impurities. At this time, the rotating motor 36 stops working. The rotating motor 36 is a stepping motor. When it stops working, one of the support rods 39 and the insertion rod 40 is vertically upward. Then the hydraulic motor 34 works and the telescopic column 35 extends, driving the entire adsorption mechanism 11 to move upward, and the support column 37 moves upward in the make way slot 29. The top adsorption column 31 moves up 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 limit arc plate 43 and the unloading guide rail 13. The feeding motor 49 is started, and the feeding screw 48 rotates to make the pressure plate 51 engaged therewith move toward the filter box 3. The ejecting block 50 ejects the adsorption column 31 on the inner side of the limit arc plate 43. During this period, the pressure plate 51 presses the adsorption column 31 below to prevent it from moving up, and the position of the plug-in slot 52 toward the bottom is relative to the support rod 39. The new adsorption column 31 pushes the saturated adsorption column 31, and the saturated adsorption column 31 pushes the elastic plate 42 and slides into the unloading guide rail 13, and rolls into the recovery basket 14 along the track of the unloading guide rail 13, and the new adsorption column 31 is pushed and sleeved on the insertion rod 40, and the elastic plate 42 rebounds and resets under the elastic action of the torsion spring, and then the feeding motor 49 reverses the feeding screw 48 to reset the pressure plate 51 and the ejecting block 50, and under the elastic action of the feeding spring 46, the ejecting plate 45 makes the next The adsorption column 31 moves to the inner side of the limiting arc plate 43. At this time, the rotary motor 36 rotates to make the next saturated adsorption column 31 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 are replaced. The hydraulic motor 34 is started to move the entire adsorption mechanism 11 back into the filter box 3, and the new adsorption column 31 continues to purify the water body; the staff recovers the saturated adsorption column 31 and performs restoration treatment.

[0035] After the sewage treatment is completed, the waste collection box 17 is pulled out and the sludge waste deposited therein is treated separately.

[0036] The above is the overall workflow of the present invention. Just repeat this step next time you use it.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

[0039] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A heavy metal acid wastewater treatment device, comprising a neutralization tank (1), a sedimentation tank (2) and a filter tank (3), characterized in that: The neutralization tank (1), precipitation tank (2) and filtration tank (3) are connected in sequence. The upper parts of the neutralization tank (1) and the precipitation tank (2) are provided with tank covers (4). A stirring mechanism (8) is arranged inside the neutralization tank (1). A follow-up cleaning mechanism (9) is movably arranged inside the precipitation tank (2). A filter screen (16) is arranged between the precipitation tank (2) and the filtration tank (3). A truncation mechanism (10) is arranged on the side of the filter screen (16) close to the filtration tank (3). An adsorption mechanism (11) is rotatably arranged inside the filtration tank (3). An automatic feeding mechanism (12) is arranged outside the filtration tank (3). A blanking guide rail (13) is arranged on the outer wall of the filtration tank (3) far from the automatic feeding mechanism (12). The follow-up cleaning mechanism (9) includes a partition plate (23) and cleaning brushes (26). The partition plate (23) is slidably arranged on the inner side wall of the precipitation tank (2). Through holes are evenly distributed on the partition plate (23). On the side of the partition plate (23) close to the stirring mechanism (8), follow-up pull plates (24) are symmetrically arranged up and down. The follow-up pull plates (24) are arranged in an L shape. The cleaning brushes (26) are symmetrically slidably arranged on the side of the filter screen (16) far from the filtration tank (3). The cleaning brushes (26) slide inside the precipitation tank (2). Pulling rods (25) are rotatably connected between the two ends of the cleaning brushes (26) and the four corners of the partition plate (23) respectively. When the partition plate (23) slides close to the filter screen (16), the cleaning brushes (26) approach each other. When the partition plate (s23) slides away from the filter screen (16), the cleaning brushes (26) move away from each other. The automatic feeding mechanism (12) includes a storage tank (32) and a feeding mechanism (33). The storage tank (32) is arranged on the outer wall of the filtration tank (3). Adsorption columns (st31) are stacked inside the storage tank (32). A limiting arc plate (43) is connected to the upper end of the storage tank (32). The limiting arc plate (43) is arranged in an inverted J shape, and the inner arc surface of the limiting arc plate (43) is in contact with the adsorption columns (31). The feeding mechanism (33) is arranged on the side wall of the storage tank (32).

2. A heavy metal acid wastewater treatment equipment according to claim 1, characterized in that: The stirring mechanism (8) includes a central rotating column (19), a stirring frame (20) and a pulling rod (22). The central rotating column (19) is rotatably arranged on the bottom wall of the neutralization tank (1). The central rotating column (19) is driven by a power motor. The 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 inside the stirring frames (20). The stirring rollers (21) are arranged on the outer wall of the central rotating column (19). The pulling rod (22) is vertically arranged at the end of the stirring frame (20) far from the central rotating column (19). The pulling rod (22) penetrates through the upper and lower ends of the stirring frame (20). As the central rotating column (19) rotates, the pulling rod (22) moves inside the follow-up pull plate (24).

3. A heavy metal acid wastewater treatment equipment according to claim 2, characterized in that: The inner wall of the connection between the neutralization box (1) and the sedimentation box (2) is symmetrically provided with a sliding groove (15), the partition (23) slides in the sliding groove (15), and the pulling rod (25) moves in contact with the inner wall of the sedimentation box (2); A connecting slope (18) is provided on one side of the neutralization box (1) close to the sedimentation box (2). A waste collection box (17) is slidably provided on the bottom of the sedimentation box (2). The waste collection box (17) is overlapped on the connecting slope (18). The waste collection box (17) is a pull-out structure.

4. The heavy metal acid wastewater treatment equipment according to claim 3, characterized in that: The cut-off mechanism (10) comprises an electric telescopic rod (27) and a cut-off plate (28), wherein the electric telescopic rod (27) is symmetrically arranged on the outer wall of the filter box (3), and the cut-off plate (28) is connected to the output end of the electric telescopic rod (27). The cut-off plate (28) slides in the filter box (3), and the cut-off plate (28) is in sliding contact with the surface of the filter screen (16).

5. The heavy metal acid wastewater treatment equipment according to claim 4, characterized in that: The side wall of the filter box (3) is provided with a clearance groove (29) through the side wall, and the adsorption mechanism (11) includes a hydraulic motor (34), a rotary motor (36), a support column (37), a blocking plate (38), a support rod (39) and an insertion rod (40). The hydraulic motor (34) is provided 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). The rotary motor (36) is provided at the telescopic end of the telescopic column (35). The support column (37) is provided at the output end. The output end of the rotating motor (36) is provided, the supporting rotating column (37) is horizontally provided in the filter box (3), the supporting rotating column (37) moves in the giving way groove (29), the blocking plate (38) is rotatably provided on the supporting rotating column (37), the blocking plate (38) is slidably provided in the side wall of the filter box (3), the supporting rod (39) is evenly distributed on the circumference of the supporting rotating column (37) near the end of the blocking plate (38), and the interpenetrating rod (40) is horizontally connected to the end of the supporting rod (39) away from the supporting rotating column (37).

6. The heavy metal acid wastewater treatment equipment according to claim 5, characterized in that: The end of the support rotating column (37) away from the blocking plate (38) is provided with a connecting plate (41), and the connecting plate (41) is evenly distributed with elastic plates (42), and the elastic plates (42) are rotatably connected to the connecting plate (41). A torsion spring is provided between the elastic plates (42) and the connecting plate (41), and the circumferentially evenly distributed elastic plates (42) are in contact with the circumferentially evenly distributed interpenetrating rods (40), and the cross-sectional diameter of the interpenetrating rods (40) is greater than the width of the support rods (39); An adsorption column (31) is movably sleeved on the insertion rod (40), and a plug-in slot (52) is provided through the side wall of the adsorption column (31), and the slot width of the plug-in slot (52) is equal to the width of the support rod (39).

7. The heavy metal acid wastewater treatment equipment according to claim 6, characterized in that: A feeding trough (44) is provided on one side of the storage box (32) away from the filter box (3), a top plate (45) is provided inside the storage box (32), and the top plate (45) slides in the feeding trough (44). The top plate (45) and the bottom wall of the storage box (32) are evenly connected with feeding springs (46), and the adsorption columns (31) are stacked on the top plate (45); The limiting arc plate (43) is arranged higher than the filter box (3), and the limiting arc plate (43) is arranged opposite to the upper end of the material discharge guide rail (13). The material discharge guide rail (13) is arranged in a J shape, and a recovery basket (14) is provided at the lower end of the material discharge guide rail (13).

8. The heavy metal acid wastewater treatment equipment according to claim 7, characterized in that: The feeding mechanism (33) includes a feeding frame (47), a feeding motor (49), a pressure plate (51) and a lifting block (50), wherein the feeding frame (47) is arranged 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), the feeding motor (49) is arranged on the feeding frame (47), the output end of the feeding motor (49) is connected to the feeding screw (48), the pressure plate (51) is threadedly engaged and sleeved on the feeding screw (48), the pressure plate (51) is slidably arranged between the limiting arc plate (43) and the upper end of the storage box (32), the lifting block (50) is arranged at the end of the pressure plate (51) close to the filter box (3), and the lifting block (50) is slidably arranged on the inner side of the limiting arc plate (43).

9. The heavy metal acid wastewater treatment equipment according to claim 8, characterized in that: The neutralization box (1) is provided with a liquid inlet (6) on a side away from the sedimentation box (2), and a pH detector (7) is provided inside the neutralization box (1); the filter box (3) is provided with a liquid outlet (30) on a side away from the sedimentation box (2), and a water quality detector is provided inside the filter box (3); a feeding box (5) is provided on the box cover (4), and the two feeding boxes (5) are respectively provided on the upper parts of the neutralization box (1) and the sedimentation box (2), and a solenoid valve is provided at the lower end of the feeding box (5).

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