Tailing pond heavy metal polluted underground water in-situ extraction and purification equipment

Abstract

The invention discloses in-situ extraction and purification equipment for tailing pond heavy metal polluted underground water. The in-situ extraction and purification equipment comprises a base, a pretreatment assembly, a fine filtration assembly and a drug treatment assembly, the pretreatment assembly comprises a horizontal treatment cylinder, a collecting component arranged in the horizontal treatment cylinder and a rotating motor for providing power for the collecting component; the fine filtration assembly comprises a filter box, a filter plate arranged in the filter box and a submersible pump arranged on the filter box; the medicine treatment assembly comprises a mixing barrel, a stirring shaft clamped in the mixing barrel and a mixing motor for providing power for the stirring shaft; the device is reasonable in structural design, heavy metal polluted underground water is subjected to pretreatment and fine filtration treatment, then heavy metal ions in the polluted underground water are fixed and removed through a heavy metal capturing agent, in-situ extraction and purification of the tailings pond heavy metal polluted underground water are achieved, the purification efficiency of the heavy metal polluted underground water is improved, and the service life of the tailings pond heavy metal polluted underground water is prolonged. The remediation cost of the heavy metal polluted underground water is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of groundwater remediation, in particular to a tailing pond heavy metal contaminated groundwater in-situ extraction and purification equipment. BACKGROUND

[0002] The tailing pond is an environmental protection facility provided by the mining and dressing enterprises. The tailings produced after the ore mined from the mine is selected by the dressing plant are stored in the tailing pond. The narrow definition is that the tailing pond is a place for storing the tailings discharged after the ore is selected by the metal and non-metal mine, which is formed by damming the valley or surrounding the land. The broad definition is that the tailing pond is a place for storing the tailings. Most of the tailing ponds containing heavy metals do not have standard anti-seepage measures, especially the historical tailing ponds without owners. The leachate produced by the tailings stored in the tailing pond under the action of rainfall contains heavy metal pollutants. The leachate seeps into the groundwater, which pollutes the groundwater downstream of the tailing pond, and thus affects the surrounding water environment and soil environment, and further threatens human health. Therefore, a tailing pond heavy metal contaminated groundwater purification equipment is needed to repair and treat the groundwater contaminated by heavy metals.

[0003] However, the filtering mechanism of the existing tailing pond heavy metal contaminated groundwater purification equipment lacks cleaning design, and the filter screen is easily clogged, which relies more on relevant professional personnel for high-frequency maintenance and cleaning. At the same time, the mixing of the repair reagent and the contaminated water is not sufficient, which not only limits the repair efficiency of the contaminated groundwater, but also causes waste of the repair reagent. SUMMARY

[0004] In view of the above technical problems, the present application provides a tailing pond heavy metal contaminated groundwater in-situ extraction and purification equipment.

[0005] The technical scheme of the present application is as follows: a tailing pond heavy metal contaminated groundwater in-situ extraction and purification equipment, comprising a base, a pretreatment assembly arranged on the base, a fine filtration assembly arranged on the base below the pretreatment assembly, and a drug treatment assembly arranged on the base and connected with the fine filtration assembly; a support platform is arranged on the upper end surface of the base;

[0006] The pretreatment assembly comprises a horizontal treatment cylinder arranged on the support platform, a collection member arranged inside the horizontal treatment cylinder, and a rotary motor arranged on the outer wall of the horizontal treatment cylinder and providing power for the collection member; a water inlet pipe is arranged at the top end of the horizontal treatment cylinder, and a flow guide hopper penetrating through the support platform is arranged at the bottom end; an extraction pump is arranged at the connection between the water inlet pipe and the horizontal treatment cylinder; the collection member comprises a hollow pipe rotatably clamped inside the horizontal treatment cylinder, a baffle disc sleeved on both sides of the hollow pipe, and a plurality of collection net boxes equidistantly distributed in the circumferential direction of the hollow pipe and respectively fixedly connected with the two baffle discs; a plurality of collection grooves are obliquely arranged on the side wall of each collection net box; the rotary motor provides power for the hollow pipe;

[0007] The fine filtering assembly comprises a filter box arranged on the base and communicated with the diversion hopper, an inclined filter plate arranged in the filter box, and a submersible pump arranged on the upper end surface of the filter box and having an input end communicated with the inside of the filter box;

[0008] The drug processing assembly comprises a mixing cylinder arranged on the upper end surface of the base, a stirring shaft rotatably clamped in the mixing cylinder, and a mixing motor arranged on the top end of the mixing cylinder and providing power for the stirring shaft; a drug adding pipe, a water adding pipe, and a backflow pipe are sequentially arranged on the outer side wall of the mixing cylinder from top to bottom; the water adding pipe is connected with the output end of the submersible pump; a plurality of stirring rod members are equidistantly distributed on the stirring shaft from top to bottom; the stirring rod member is composed of a plurality of U-shaped stirring frames equidistantly distributed in the circumferential direction of the stirring shaft; a first pulley is arranged on the outer side wall of the stirring shaft; the output end of the mixing motor is connected with a second pulley; and the second pulley and the first pulley are connected through a belt drive.

[0009] Further, the hollow tube penetrates the horizontal processing cylinder at the end away from the rotary motor; the horizontal processing cylinder is provided with a transfer box at the end and at a position corresponding to the hollow tube; the transfer box is provided with a movable cover at the top end and a circulation pipe communicated with the inside of the filter box at the bottom end; a hollow spiral is arranged in the hollow tube; and a penetration slot is arranged at the connection between the hollow tube and each collecting net box.

[0010] Description: During the rotation of the hollow tube, the pollutants in the collecting net box enter the inside of the hollow tube through the penetration slot and are moved to the inside of the transfer box under the action of the hollow spiral for collection, which is beneficial to improve the working continuity of the collecting member.

[0011] Further, a plurality of filter plates are arranged in the filter box; each filter plate is arranged in parallel in the filter box; and the diameters of the mesh holes on each filter plate decrease from left to right; and a sewage pipe is arranged on the outer side wall of the filter box.

[0012] Description: By arranging a plurality of filter plates in the filter box, the filtering effect of the heavy metal contaminated underground water in the tailings pond can be improved, and the operation efficiency of the fine filtering assembly can be reduced.

[0013] Further, the fine filtering assembly further comprises a cleaning member arranged on the top end of the filter box and abutting against each filter plate; the cleaning member comprises an equipment box arranged on the top end of the filter box, a plurality of vibration rods penetrating the equipment box and abutting against each filter plate one by one, and a cleaning motor arranged on the outer side wall of the equipment box and providing power for each vibration rod; an integrated seat connected with each vibration rod is arranged in the equipment box; a stand is arranged on the top end of the integrated seat; a rack is arranged on one side of the stand; a guide seat is arranged on the other side of the stand; a guide column slidably clamped with the guide seat is arranged on the inner top of the equipment box; a reset spring abutting against the lower bottom surface of the guide seat is arranged on the guide column; and an incomplete gear meshingly connected with the rack is arranged on the output end of the cleaning motor.

[0014] The upper and lower ends of each filter plate are slidably engaged with the inner wall of the filter box through a sliding rod, and each sliding rod is sleeved with a damping spring that abuts against the filter plate at the corresponding position;

[0015] Description: The cleaning motor is used to drive the incomplete gear to rotate, and the meshing action of the rack and the incomplete gear is used to make the column push the integrated seat and the vibration rod to move up and down inside the equipment box. Under the action of the corresponding vibration rod, each filter plate swings back and forth along the corresponding sliding rod, so that the pollutants blocked on the filter plate fall off under the action of vibration, ensuring the reliability of the filter plate.

[0016] Furthermore, a vibration seat is rotatably connected to each vibration rod in the filter box; each vibration rod is movably hinged to each vibration seat in a one-to-one correspondence;

[0017] Description: Using the vibration seat to transmit the vibration of the vibration rod to the filter plate can improve the uniformity of the vibration load on the filter plate and improve the cleaning effect of the filter plate.

[0018] Furthermore, the outside of the stirring shaft is provided with a sleeve that passes through the mixing drum and is rotatably engaged with the mixing drum, and the first pulley is sleeved on the outside of the sleeve; each U-shaped stirring frame is rotatably engaged with the sleeve through a connecting shaft, and the end of each connecting shaft is connected to a bevel gear; the outer wall of the stirring shaft is provided with a helical gear seat that is meshed and connected with each bevel gear in a one-to-one correspondence; the top of the stirring shaft is provided with a horizontal pressure rod, and the upper end of the outer wall of the stirring shaft is provided with a buffer spring that abuts against the sleeve; the top of the mixing drum is rotatably engaged with a push turntable through the connecting frame, and the horizontal pressure rod can abut against the push turntable;

[0019] Description: The casing is used to drive the horizontal pressure rod to rotate. When the horizontal pressure rod contacts and pushes the turntable, it presses the stirring shaft to move downward along the casing. The meshing action of the helical gear seat and the bevel gear makes the U-shaped stirring frame swing back and forth outside the casing, which is beneficial to improve the mixing uniformity of the heavy metal capture agent and the heavy metal contaminated groundwater in the tailings pond.

[0020] Furthermore, a wear-resistant sleeve is rotatably connected to the outside of the horizontal pressure rod;

[0021] Note: By installing a wear-resistant bushing on the outside of the horizontal pressure rod, the friction resistance when the horizontal pressure rod contacts and pushes the turntable can be reduced.

[0022] Further, a medicine bearing platform is arranged at the upper end of the mixing cylinder and corresponds to the position of the medicine adding pipe, a reversed trapezoidal medicine cavity is arranged on the medicine bearing platform, a plurality of medicine adding pipes are arranged on the medicine bearing platform and equidistantly distributed at the bottom of the reversed trapezoidal medicine cavity, each medicine adding pipe is slidably connected with the medicine bearing platform, and a medicine adding groove in communication with the inside of the medicine adding pipe is arranged at the lower position of the medicine adding pipe; a compression spring is arranged in the medicine bearing platform and sheathed on the outside of each medicine adding pipe; an arc-shaped protrusion capable of abutting against the top end of any medicine adding pipe is arranged on the lower bottom surface of a medicine adding disc arranged on the outside of the sheathed pipe.

[0023] Description: The reversed trapezoidal medicine cavity arranged in the medicine bearing platform is beneficial to improve the falling uniformity of the heavy metal capturing agent; during the rotation of the medicine adding disc, the arc-shaped protrusion pushes the medicine adding pipe to move downward along the medicine bearing platform, the medicine adding groove penetrates the space at the upper and lower ends of the medicine bearing platform, at this time, the heavy metal capturing agent enters the lower space of the medicine bearing platform through the medicine adding groove, and the intermittent input of the heavy metal capturing agent into the water body is beneficial to improve the effect and utilization of the heavy metal capturing agent.

[0024] Further, a plurality of annular sedimentation sleeves are arranged in the mixing cylinder and sheathed together.

[0025] Description: The annular sedimentation sleeves are arranged to avoid the dispersion of the pollutants deposited at the bottom of the mixing cylinder under the impact of water flow.

[0026] Further, a cleaning manhole is arranged at the lower end of the outer wall of the mixing cylinder.

[0027] Description: The cleaning manhole is used to clean the pollutants deposited at the bottom of the mixing cylinder, thereby improving the use convenience of the arrangement.

[0028] The working principle of the application is as follows:

[0029] In use, the equipment is moved to the tailing pond site, the heavy metal contaminated underground water of the tailing pond is pumped into the horizontal treatment cylinder by the extraction pump for pretreatment, the hollow pipe is rotated in the horizontal treatment cylinder by the rotary motor, the large-particle pollutants in the contaminated underground water enter the collection net box through the collection groove on the collection net box during the rotation of the hollow pipe, and the pollutants in the collection net box enter the hollow pipe through the penetration groove and are moved to the transfer box for collection under the action of the hollow screw.

[0030] The pretreated contaminated groundwater enters the filter box through the diversion hopper and is subjected to fine filtering treatment, and the filter plates in the filter box are used for grading filtering treatment of fine impurities in the contaminated groundwater; moreover, the incomplete gear is driven to rotate by the cleaning motor, the meshing of the rack and the incomplete gear enables the vertical column to drive the integrated seat and the vibration rod to move up and down in the equipment box, and each filter plate reciprocates along the corresponding sliding rod under the action of the corresponding vibration rod, so that the pollutants blocked on the filter plate fall off under the vibration action;

[0031] The fine filtered contaminated groundwater enters the cylinder through the water pipe under the action of the submersible pump, the heavy metal capturing agent is added into the inverted trapezoidal medicine cavity through the dosing pipe, the mixing motor is used to drive the stirring shaft and the sleeve to rotate synchronously, the sleeve drives the horizontal pressure rod to rotate, when the horizontal pressure rod contacts and pushes the rotating disc, the stirring shaft moves downward along the sleeve, the meshing of the bevel gear and the bevel gear enables the U-shaped stirring frame to reciprocate outside the sleeve; when the medicine disc rotates synchronously with the sleeve, the arc protrusion pushes the medicine pipe to move downward along the medicine support, the medicine groove connects the space at the upper and lower ends of the medicine support, at this time, the heavy metal capturing agent enters the lower space of the medicine support through the medicine groove, so that the heavy metal capturing agent and the contaminated groundwater are fully mixed and reacted, the heavy metal ions in the contaminated groundwater are precipitated under the coordination chelation of the heavy metal capturing agent, and the purified contaminated groundwater is discharged through the backflow pipe; wherein the heavy metal capturing agent is ferrous sulfate solution with a volume concentration of 25%, and the adding proportion of the heavy metal capturing agent is 82ml / t.

[0032] Compared with the prior art, the beneficial effects of the present application are as follows:

[0033] Firstly, the device structure of the present application is reasonable, the heavy metal contaminated groundwater is pretreated and fine filtered, and then the heavy metal capturing agent is used to fix and remove the heavy metal ions in the contaminated groundwater, so that the in-situ extraction and purification of the heavy metal contaminated groundwater in the tailings pond are realized, the purification efficiency of the heavy metal contaminated groundwater is improved, and the repair cost of the heavy metal contaminated groundwater is reduced;

[0034] Secondly, the present application filters the contaminated groundwater through multiple filter plates in different spaces, reduces the filtering difficulty of the contaminated groundwater, and uses the cleaning member to clean the filter plates in real time, so as to ensure the operation stability and reliability of the device;

[0035] Thirdly, the present application intermittently adds the heavy metal capturing agent into the contaminated water body, and uses the swinging and rotating U-shaped stirring frame to continuously stir the contaminated water body, so that the heavy metal capturing agent is uniformly dispersed in the contaminated water body, which is beneficial to improve the reaction rate of the heavy metal capturing agent and the contaminated water body, and further improve the working efficiency of the device. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a longitudinal sectional view of the present invention;

[0037] Figure 2 It is a front view of the present invention;

[0038] Figure 3 It is a schematic structural diagram of the collecting component of the present invention;

[0039] Figure 4 Schematic diagram of the connection between the cleaning component and the filter plate of the present invention;

[0040] Figure 5 This invention Figure 4 A partial enlarged schematic diagram of point A in the middle;

[0041] Figure 6 This is a schematic diagram of the connection between the sleeve and the mixing barrel of the present invention;

[0042] Figure 7 Schematic diagram of the connection between the U-shaped stirring frame and the stirring shaft of the present invention;

[0043] Figure 8 This invention Figure 6 A partial enlarged schematic diagram of point B in the middle;

[0044] Figure 9 This invention Figure 6 A partial enlarged schematic diagram of point C in the middle;

[0045] Among them, 1-base, 10-support platform, 2-pretreatment component, 20-horizontal treatment cylinder, 200-water inlet pipe, 201-diversion bucket, 21-collection component, 210-hollow pipe, 2100-through trough, 211-baffle, 212-collection net box, 2120-collection trough, 213-hollow spiral, 22-rotating motor, 23-transfer box, 230-movable cover, 231-circulation pipe, 24-extraction pump, 3-fine filter component, 30-filter box, 300-drain pipe, 31-filter plate, 310-sliding rod, 311-damping spring, 32-submersible pump, 33-cleaning component, 330-equipment box, 331-vibration rod, 332-cleaning motor, 3320-incomplete gear, 333-integrated seat, 334-column, 3340-rack, 3341-guide Seat, 3342-guide column, 3343-reset spring, 335-vibration seat, 4-drug processing assembly, 40-mixing barrel, 400-dosing pipe, 401-water pipe, 402-return pipe, 403-cleaning manhole, 41-mixing shaft, 410-first pulley, 411-bevel gear seat, 412-horizontal pressure rod, 4120-wear-resistant sleeve, 413-buffer spring, 42-mixing electric Machine, 420-second pulley, 43-stirring rod component, 430-U-shaped stirring frame, 431-connecting shaft, 432-bevel gear, 44-sleeve, 45-propelling turntable, 450-connecting frame, 46-drug support platform, 460-inverted trapezoidal drug cavity, 461-drug release tube, 4610-drug release trough, 462-compression spring, 47-drug release tray, 470-arc-shaped protrusion, 48-annular sedimentation sleeve. DETAILED DESCRIPTION

[0046] Example 1

[0047] like Figure 1 The device for in-situ extraction and purification of heavy metal-contaminated groundwater in a tailings pond shown in the figure comprises a base 1, a pretreatment assembly 2 disposed on the base 1, a fine filter assembly 3 disposed on the base 1 and below the pretreatment assembly 2, and a drug treatment assembly 4 disposed on the base 1 and connected to the fine filter assembly 3. A support platform 10 is provided on the upper end surface of the base 1.

[0048] like Figure 1 、 23, the pretreatment assembly 2 includes a horizontal treatment cylinder 20 arranged on the support platform 10, a collecting member 21 arranged inside the horizontal treatment cylinder 20, and a rotating motor 22 arranged on the outer wall of the horizontal treatment cylinder 20 and providing power for the collecting member 21; a water inlet pipe 200 is provided at the top of the horizontal treatment cylinder 20, and a guide bucket 201 penetrating the support platform 10 is provided at the bottom; an extraction pump 24 is provided at the connection between the water inlet pipe 200 and the horizontal treatment cylinder 20; the collecting member 21 includes a hollow tube 210 rotatably connected to the interior of the horizontal treatment cylinder 20, baffles 211 sleeved on both sides of the exterior of the hollow tube 210, and three collecting net boxes 212 equidistantly distributed around the circumference of the hollow tube 210 and fixedly connected to the two baffles 211 respectively; a number of collecting troughs 2120 are obliquely provided on the side walls of each collecting net box 212; the rotating motor 22 provides power for the hollow tube 210;

[0049] like Figure 1 、 2 As shown, the fine filter assembly 3 includes a filter box 30 disposed on the base 1 and in communication with the guide hopper 201, a filter plate 31 obliquely disposed inside the filter box 30, and a submersible pump 32 disposed on the upper end surface of the filter box 30 and having its input end in communication with the interior of the filter box 30;

[0050] like Figure 1 、 2 As shown in , 7 and 8, the drug processing assembly 4 includes a mixing drum 40 arranged on the upper end surface of the base 1, a stirring shaft 41 rotatably connected to the inside of the mixing drum 40 and a mixing motor 42 arranged at the top of the mixing drum 40 and providing power for the stirring shaft 41; a dosing pipe 400, a water adding pipe 401 and a return pipe 402 are sequentially arranged on the outer wall of the mixing drum 40 from top to bottom; the water adding pipe 401 is connected to the output end of the submersible pump 32; three groups of stirring rod members 43 are equidistantly distributed on the stirring shaft 41 from top to bottom, and the stirring rod member 43 consists of four U-shaped stirring frames 430 equidistantly distributed around the stirring shaft 41; a first pulley 410 is sleeved on the upper end of the outer wall of the stirring shaft 41; the output end of the mixing motor 42 is connected to a second pulley 420, and the second pulley 420 and the first pulley 410 are connected by a belt drive;

[0051] In this embodiment, the rotary motor 22, the extraction pump 24, the submersible pump 32 and the hybrid motor 42 are all products of the prior art; for example, the rotary motor 22 and the hybrid motor 42 can both be gear reduction motors produced by Dongguan Yutian Motor Co., Ltd.; the extraction pump 24 and the submersible pump 32 can both be QY oil-filled submersible electric pumps produced by Shanghai Shenyin Pump Manufacturing Co., Ltd.;

[0052] Example 2

[0053] This embodiment differs from embodiment 1 in that:

[0054] likeFigure 1 、 2 As shown in FIG. 3, the hollow tube 210 penetrates the horizontal treatment cylinder 20 at one end away from the rotary motor 22, the end of the horizontal treatment cylinder 20 is provided with a transfer box 23 corresponding to the position of the hollow tube 210, the top end of the transfer box 23 is provided with a movable cover 230, and the bottom end is provided with a circulation pipe 231 in communication with the inside of the filter box 30; the inside of the hollow tube 210 is sleeved with a hollow spiral 213, and the connection between the hollow tube 210 and each collection net box 212 is provided with a penetration slot 2100; during the rotation of the hollow tube 210, the pollutants in the collection net box 212 enter the inside of the hollow tube 210 through the penetration slot 2100, and are moved to the inside of the transfer box 23 under the action of the hollow spiral 213 for collection, which is conducive to improving the working continuity of the collection member 21.

[0055] Example 3

[0056] The difference between this example and Example 2 is that:

[0057] As Figure 4 、 5As shown, a plurality of filter plates 31 are provided, each filter plate 31 is respectively arranged in parallel inside the filter box 30, and the mesh diameter of each filter plate 31 decreases from left to right, and a sewage discharge pipe 300 is provided on the outer wall of the filter box 30; the fine filter assembly 3 also includes a cleaning member 33 arranged at the top of the filter box 30 and abutting against each filter plate 31 at the same time; the cleaning member 33 includes an equipment box 330 arranged at the top of the filter box 30, a plurality of vibration rods 331 that pass through the equipment box 330 and abut against each filter plate 31 one by one, and a cleaning motor 332 (commercially available product) that is provided on the outer wall of the equipment box 330 and provides power to each vibration rod 331 at the same time; an integrated seat 333 that is simultaneously connected to each vibration rod 331 is provided inside the equipment box 330, a column 334 is provided at the top of the integrated seat 333, a rack 3340 is provided on one side of the column 334, and a guide seat 3341 is provided on the other side, and a top of the equipment box 330 is provided with a guide seat 3341 The cam 3320 of the filter housing 310 is engaged with the cam 3321 and the cam 3322 is engaged with the cam 3323 and the cam 3324 is engaged with the cam 3325.

[0058] Example 4

[0059] This embodiment differs from embodiment 3 in that:

[0060] like Figure 4 As shown, vibration seats 335 are rotatably connected inside the filter box 30 and at positions corresponding to the positions of each vibration rod 331; each vibration rod 331 is movably hinged to each vibration seat 335 in a one-to-one correspondence; the vibration seat 335 is used to transmit the vibration effect of the vibration rod 331 to the filter plate 31, which can improve the uniformity of the vibration load on the filter plate 31 and improve the cleaning effect of the filter plate 31.

[0061] Example 5

[0062] This embodiment differs from embodiment 4 in that:

[0063] like Figure 6 、 7As shown in Figure 8, the outside of the stirring shaft 41 is provided with a sleeve 44 that passes through the mixing drum 40 and is rotatably connected to the mixing drum 40, and the first pulley 410 is sleeved on the outside of the sleeve 44; each U-shaped stirring frame 430 is rotatably connected to the sleeve 44 through a connecting shaft 431, and the end of each connecting shaft 431 is connected to a bevel gear 432; the outer wall of the stirring shaft 41 is provided with a helical gear seat 411 that is meshed and connected with each bevel gear 432 in a one-to-one correspondence; a horizontal pressure rod 412 is provided at the top of the stirring shaft 41, and a wear-resistant shaft sleeve 4120 is rotatably connected to the outside of the horizontal pressure rod 412; the outside of the stirring shaft 41 A buffer spring 413 is sleeved on the upper end of the wall and abuts against the sleeve 44; the top end of the mixing barrel 40 is rotatably connected to the push turntable 45 through the connecting frame 450, and the horizontal pressure rod 412 can abut against the push turntable 45; the sleeve 44 is used to drive the horizontal pressure rod 412 to rotate. When the horizontal pressure rod 412 contacts the push turntable 45, the stirring shaft 41 is pressed to move downward along the sleeve 44. The meshing action of the helical gear seat 411 and the bevel gear 432 is used to make the U-shaped stirring frame 430 swing back and forth outside the sleeve 44, which is beneficial to improve the mixing uniformity of the heavy metal capture agent and the heavy metal-contaminated groundwater in the tailings pond.

[0064] Example 6

[0065] This embodiment differs from embodiment 5 in that:

[0066] like Figure 6 、 9 As shown, a medicine support 46 is provided at the upper end of the interior of the mixing cylinder 40 and at the position corresponding to the dosing tube 400. An inverted trapezoidal medicine cavity 460 is provided on the medicine support 46. Four medicine-dispensing tubes 461 are evenly distributed on the medicine support 46 and at the bottom of the inverted trapezoidal medicine cavity 460. Each medicine-dispensing tube 461 is slidably engaged with the medicine support 46, and a medicine-dispensing groove 4610 communicating with the interior of the medicine-dispensing tube 461 is provided at the lower position of the medicine-dispensing tube 461; a compression spring 462 is provided inside the medicine support 46 and is respectively sleeved on the outside of each medicine-dispensing tube 461; a medicine-dispensing tray 47 is provided on the upper end surface of the outer sleeve 44, and a medicine-dispensing tray 47 is provided on the lower bottom surface. There is an arc-shaped protrusion 470 that can abut against the top of any drug release tube 461; by setting an inverted trapezoidal drug cavity 460 inside the drug support platform 46, it is beneficial to improve the uniformity of the falling of the heavy metal capture agent; and during the rotation of the drug release plate 47, the arc-shaped protrusion 470 is used to push the drug release tube 461 to move downward along the drug support platform 46, and the drug release groove 4610 is used to penetrate the space at the upper and lower ends of the drug support platform 46. At this time, the heavy metal capture agent enters the lower space of the drug support platform 46 through the drug release groove 4610. By intermittently adding heavy metal capture agents into the water body, it is beneficial to improve the effect and utilization rate of the heavy metal capture agent.

[0067] Example 7

[0068] This embodiment differs from embodiment 6 in that:

[0069] As shown in Figure 1 The inside of the mixing cylinder 40 is provided with three annular settling sleeves 48 which are nested together; by providing the annular settling sleeves 48, the pollutants deposited at the bottom of the mixing cylinder 40 are prevented from being dispersed under the impact of water flow.

[0070] Example 8

[0071] The difference between this example and Example 7 is that:

[0072] As shown in Figure 2 The lower end of the outer wall of the mixing cylinder 40 is provided with a cleaning manhole 403; by using the cleaning manhole 403, the pollutants deposited at the bottom of the mixing cylinder 40 can be easily cleaned, thereby improving the use convenience of the device.

Claims

1. An in-situ extraction and purification equipment for heavy metal contaminated groundwater in tailings ponds, characterized by: The invention comprises a base (1), a pretreatment component (2) arranged on the base (1), a fine filter component (3) arranged on the base (1) and located below the pretreatment component (2), and a drug treatment component (4) arranged on the base (1) and connected to the fine filter component (3); a support platform (10) is provided on the upper end surface of the base (1); The pretreatment assembly (2) comprises a horizontal treatment cylinder (20) arranged on the support platform (10), a collecting member (21) arranged inside the horizontal treatment cylinder (20), and a rotating motor (22) arranged on the outer wall of the horizontal treatment cylinder (20) and providing power to the collecting member (21); the collecting member (21) comprises a hollow tube (210) rotatably clamped inside the horizontal treatment cylinder (20), baffles (211) sleeved on both sides of the outside of the hollow tube (210), and a plurality of collecting net boxes (212) equidistantly distributed around the circumference of the hollow tube (210) and respectively fixedly connected to two of the baffles (211); a plurality of collecting troughs (2120) are obliquely arranged on the side wall of each of the collecting net boxes (212); The fine filter assembly (3) comprises a filter box (30) arranged on the base (1) and in communication with the guide hopper (201), a filter plate (31) arranged obliquely inside the filter box (30), and a submersible pump (32) arranged on the upper end surface of the filter box (30) and having an input end in communication with the interior of the filter box (30); The drug processing assembly (4) comprises a mixing drum (40) arranged on the upper end surface of the base (1), a stirring shaft (41) rotatably engaged inside the mixing drum (40), and a mixing motor (42) arranged at the top end of the mixing drum (40) and providing power to the stirring shaft (41); a plurality of stirring rod components (43) are evenly distributed from top to bottom on the stirring shaft (41); a first pulley (410) is sleeved on the upper end of the outer wall of the stirring shaft (41); the output end of the mixing motor (42) is connected to a second pulley (420), and the second pulley (420) and the first pulley (410) are connected via a belt transmission.

2. The in-situ extraction and purification equipment for heavy metal contaminated groundwater in a tailings pond according to claim 1 is characterized in that: The end of the hollow tube (210) away from the rotating motor (22) passes through the horizontal treatment cylinder (20); a transfer box (23) is provided at the end of the horizontal treatment cylinder (20) and at a position corresponding to the position of the hollow tube (210); a movable cover (230) is provided at the top of the transfer box (23), and a circulation pipe (231) that is connected to the inside of the filter box (30) is provided at the bottom; a hollow spiral (213) is sleeved inside the hollow tube (210), and a through groove (2100) is provided at the connection between the hollow tube (210) and each collection box (212).

3. The in-situ extraction and purification equipment for heavy metal contaminated groundwater in a tailings pond according to claim 1 is characterized in that: There are several filter plates (31), each of which is arranged in parallel inside the filter box (30), and the mesh diameters on each filter plate (31) decrease from left to right.

4. The in-situ extraction and purification equipment for heavy metal contaminated groundwater in a tailings pond according to claim 3 is characterized in that: The fine filter assembly (3) further comprises a cleaning member (33) arranged at the top of the filter box (30) and simultaneously in contact with each of the filter plates (31); the cleaning member (33) comprises an equipment box (330) arranged at the top of the filter box (30), a plurality of vibration rods (331) penetrating the equipment box (330) and respectively in contact with each of the filter plates (31) in a one-to-one correspondence, and a cleaning motor (332) arranged on the outer wall of the equipment box (330) and simultaneously providing power to each of the vibration rods (331); a motor (332) is provided inside the equipment box (330) and is simultaneously in contact with each of the vibration rods (331). An integrated seat (333) is connected to the integrated seat (333), a column (334) is provided at the top of the integrated seat (333), a rack (3340) is provided on one side of the column (334), and a guide seat (3341) is provided on the other side; a guide column (3342) is provided on the top of the equipment box (330) and is slidably engaged with the guide seat (3341); a return spring (3343) is sleeved on the guide column (3342) and is in contact with the lower bottom surface of the guide seat (3341); an incomplete gear (3320) meshing with the rack (3340) is provided at the output end of the cleaning motor (332); The upper and lower ends of each filter plate (31) are slidably engaged with the inner wall of the filter box (30) through a sliding rod (310), and each sliding rod (310) is sleeved with a damping spring (311) that abuts against the filter plate (31) at the corresponding position.

5. The in-situ extraction and purification equipment for heavy metal contaminated groundwater in tailings ponds according to claim 4 is characterized in that: Vibration seats (335) are rotatably connected to positions inside the filter box (30) corresponding to the positions of the vibration rods (331); and the vibration rods (331) are movably hinged to the vibration seats (335) in a one-to-one correspondence.

6. The in-situ extraction and purification equipment for heavy metal contaminated groundwater in a tailings pond according to claim 1, characterized in that: The outside of the stirring shaft (41) is sleeved with a sleeve (44) that passes through the mixing barrel (40) and is rotatably engaged with the mixing barrel (40), and the first pulley (410) is sleeved on the outside of the sleeve (44); each of the U-shaped stirring frames (430) is rotatably engaged with the sleeve (44) through a connecting shaft (431), and the end of each of the connecting shafts (431) is connected to a bevel gear (432); an outer wall of the stirring shaft (41) is provided with a helical gear seat (411) that is meshed and connected with each of the bevel gears (432) in a one-to-one manner; a horizontal pressure rod (412) is provided at the top end of the stirring shaft (41), and a buffer spring (413) is sleeved on the upper end of the outer wall of the stirring shaft (41) that abuts against the sleeve (44); a push turntable (45) is rotatably engaged with the top end of the mixing barrel (40) through a connecting frame (450), and the horizontal pressure rod (412) can abut against the push turntable (45).

7. The in-situ extraction and purification equipment for heavy metal contaminated groundwater in tailings ponds according to claim 6, characterized in that: The horizontal pressure rod (412) is externally rotatably engaged with a wear-resistant shaft sleeve (4120).

8. The in-situ extraction and purification equipment for heavy metal contaminated groundwater in tailings ponds according to claim 6 is characterized in that: A medicine support (46) is provided at the upper end of the interior of the mixing cylinder (40) and at a position corresponding to the position of the dosing tube (400), and an inverted trapezoidal medicine cavity (460) is provided on the medicine support (46). Several medicine release tubes (461) are evenly distributed on the medicine support (46) and located at the bottom of the inverted trapezoidal medicine cavity (460), and each of the medicine release tubes (461) is respectively slidably engaged with the medicine support (46), and a medicine release groove (4610) is provided at the lower position of the medicine release tube (461) and is connected to the interior thereof; a compression spring (462) is provided inside the medicine support (46) and is respectively sleeved on the outside of each of the medicine release tubes (461); a medicine release disk (47) is provided on the upper end surface of the outer side of the sleeve (44), and an arc-shaped protrusion (470) that can abut against the top of any of the medicine release tubes (461) is provided on the lower bottom surface of the medicine release disk (47).

9. The in-situ extraction and purification equipment for heavy metal contaminated groundwater in a tailings pond according to claim 1, characterized in that: The horizontal pressure rod (412) is provided with a wear-resistant sleeve (4120).

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