An apparatus and system for groundwater remediation against chromium contaminants

Abstract

The present application relates to water remediation technical field, especially to a kind of groundwater remediation equipment and system for chromium pollutant.Its technical scheme includes: adsorption conversion piece, the adsorption conversion piece includes track, rack, gear, winding shaft and adsorption thick piece, the track is set four, is evenly fixedly installed in the top inner wall and bottom inner wall of magnetic adsorption tank respectively, the track adopts curved U-shaped structure, the inner wall of the track is slidably connected winding shaft.The present application is moved along track by gear and rack cooperation, so that winding shaft and adsorption thick piece move, when adsorption thick piece moves from the inner curved portion of track to outer curved portion, the contact surface of adsorption thick piece with water is converted, so that both sides of adsorption thick piece can contact with groundwater, avoid that the particle filling of adsorption thick piece inside is too thick, lead to that the particle of one side of adsorption thick piece is saturated to be absorbed chromium, and the other side is not absorbed to chromium, conversion absorption surface, improve absorption amount.

Description

Technical Field

[0001] This invention relates to the field of water remediation technology, and in particular to equipment and systems for the remediation of groundwater contaminated with chromium. Background Technology

[0002] Groundwater pollution refers to the phenomenon where pollution caused by human production and daily life activities alters the characteristics of groundwater. Groundwater pollution is a serious environmental problem that has a huge impact on human life and ecosystems. Drinking polluted groundwater can lead to various diseases, and groundwater pollution can also affect the growth and quality of crops. It can also enter the human body through the food chain, causing indirect harm to human health. Therefore, groundwater remediation is necessary.

[0003] The patent document with announcement number CN103613161B discloses a treatment device for wastewater containing arsenic and chromium. It introduces a magnetic field recovery device and uses magnetic nano iron oxide particles as adsorbents for arsenic or chromium-containing wastewater. This realizes the application of nano-sized particle adsorbents in actual industrial wastewater treatment. By utilizing the size advantage of the nano-sized adsorbent, a large adsorption capacity is ensured, and a low ratio of adsorbent dosage to wastewater treated is achieved.

[0004] When magnetic nano-iron oxide particles are used as adsorbents, the thickness of the adsorbent plays an important role in the adsorption process, directly affecting the adsorption effect and efficiency. The side of the adsorbent closer to the groundwater adsorbs more particles, while the other side adsorbs fewer particles, and the adsorbent cannot reach its maximum adsorption value. Summary of the Invention

[0005] The purpose of this invention is to address the problem in the prior art where the amount of particles adsorbed on both sides of the adsorbent is uneven, causing the adsorbent to fail to reach its maximum adsorption value. This invention proposes a groundwater remediation equipment and system for chromium pollutants.

[0006] On one hand, the present invention provides groundwater remediation equipment for chromium contaminants, comprising: a magnetic adsorption tank, wherein a support is fixedly installed at the bottom of the magnetic adsorption tank, and a water inlet is fixedly installed at the top of the magnetic adsorption tank, and further comprising: An adsorption conversion component includes a track, a rack, a gear, a winding shaft, and adsorption plates. Four tracks are provided and evenly fixedly installed on the top and bottom inner walls of the magnetic adsorption tank. The tracks adopt a curved U-shaped structure. The winding shaft is slidably connected to the inner wall of the track. The upper and lower ends of the winding shaft are rotatably connected to gears. A single row of racks is opened on the inner wall of the track. The gears mesh with the racks. Adsorption plates are fixedly installed on the shaft of the winding shaft. The adsorption sheet comes into contact with the water inside the magnetic adsorption tank. The adsorption sheet has the same shape as the track and moves along the track.

[0007] Optionally, the track is divided into an inner curved section and an outer curved section. When the adsorption sheet moves from the inner curved section to the outer curved section of the track, the contact surface between the adsorption sheet and the groundwater changes. A rubber strip is fixedly installed on the part of the adsorption sheet that extends into the track. A middle block is rotatably connected to the top of the gear. The middle block slides on the inner wall of the track. A stepper motor is fixedly installed on the top of the middle block. The stepper motor is fixedly connected to the gear through a rotating shaft. The interior of the adsorption sheet is filled with magnetic nano-iron oxide particles.

[0008] Optionally, the two tracks at the same height are arranged in a ring at equal angles on the inner wall of the magnetic adsorption tank. The two tracks surround each other to form a ring. A notch is opened at the end of the track, and the adsorption sheet is exposed from the notch. A winding shaft is fixedly installed at both ends of the adsorption sheet. Two gears are set inside one of the tracks. Initially, the two gears are located at the two ends of the track respectively, and the adsorption sheet overlaps with the track.

[0009] Optionally, an intermediate shaft is fixedly installed at the bottom center of the gear, the bottom end of the intermediate shaft is rotatably connected to the winding shaft, and an upper meshing tooth is fixedly installed at the bottom of the gear. The upper meshing tooth includes multiple triangular blocks, which are arranged in a ring and adjacent triangular blocks are connected to each other.

[0010] Optionally, a winding component is provided at the shaft of the intermediate shaft. The winding component includes a lower tooth, a pressing block, a sliding plate, and a lifting wedge. The lower tooth slides up and down at the intermediate shaft. The pressing block is fixedly installed at the bottom of the lower tooth. The sliding plate is fixedly installed at the bottom of the pressing block. The sliding plate slides up and down at the top of the winding shaft. The lifting wedge is fixedly installed on the inner wall of the end of the track. The pressing block is in contact with the lifting wedge.

[0011] Optionally, the shape of the lower tooth is the same as that of the upper tooth. Initially, the extrusion block is in contact with the winding shaft. The extrusion block adopts a hollow frustum-shaped structure. The inclination angle of the inclined surface of the lifting wedge is the same as the inclination angle of the inclined surface of the extrusion block cross section. The top of the winding shaft is provided with a receiving groove for accommodating the slide plate.

[0012] Optionally, a positioning plate is fixedly installed on the inner wall of the track near the end. The positioning plate has an arc-shaped notch on the side facing the gear. The cylindrical part of the gear contacts the arc-shaped notch. A ball bearing is rotatably connected to the arc-shaped notch of the positioning plate.

[0013] Optionally, a reset and regeneration component is provided in the middle of the track. The reset and regeneration component includes a support shaft, a support plate, a first brush, and a second brush. Two symmetrically arranged support plates are fixedly installed on the inner wall of the magnetic adsorption tank. The support shaft is rotatably connected to one side of the two support plates facing each other. The first brush and the second brush are fixedly installed on the side of the support plate. The first brush and the second brush are aligned with the adsorption sheet.

[0014] Optionally, the end of the track is fixedly connected to the support plate, the support plate is covered with a rubber sheet on one side of the adsorption sheet, the inner wall of the magnetic adsorption tank is rotatably connected with a stirring blade, and a water spray nozzle is opened at the rod of the stirring blade.

[0015] On the other hand, the present invention provides a groundwater remediation system for chromium contaminants, including the above-mentioned groundwater remediation equipment for chromium contaminants.

[0016] Compared with the prior art, this application includes at least one of the following beneficial technical effects: This invention utilizes a gear and rack mechanism to move the gear along a track, which in turn moves the winding shaft and the adsorption sheet. As the adsorption sheet moves from the inner curved part of the track to the outer curved part, the contact surface between the adsorption sheet and the water changes, ensuring that both sides of the adsorption sheet can contact the groundwater. This prevents the adsorption sheet from being filled with too many particles, which would cause one side of the adsorption sheet to become saturated with chromium while the other side remains untreated. By changing the absorption surface, the absorption capacity is increased, and the number of cleaning cycles is reduced.

[0017] Furthermore, when the gear moves to the end of the track, the extrusion block is squeezed by the lifting wedge and moves upward. At this time, the extrusion block engages with the upper gear, and the gear can no longer move along the track. The gear then idles, allowing the winding shaft to wind up the adsorption sheet, so that all positions on the adsorption sheet are in contact with groundwater, further increasing the contact area and improving the adsorption effect.

[0018] Furthermore, by having the adsorption sheet come into contact with the first and second brushes, the first and second brushes remove impurities from the surface of the adsorption sheet, preventing the deposits on the surface of the adsorption sheet from affecting the magnetic adsorption of chromium. During the cleaning of the adsorption sheet, water is sprayed from the nozzle to clean the adsorption sheet, and in conjunction with the adsorption sheet conversion surface, both sides of the adsorption sheet are cleaned, improving the cleaning effect and increasing the utilization rate. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of one embodiment of the present invention is provided; Figure 2 This is a cross-sectional schematic diagram of the magnetic adsorption tank structure; Figure 3 This is a schematic diagram of the adsorption thick sheet structure; Figure 4 This is a top view of the track structure; Figure 5 This is a schematic diagram of the gear structure; Figure 6 This is a schematic diagram of the main view of the winding shaft structure; Figure 7 This is a schematic diagram of the second brush structure; Figure 8 This is a system flowchart of the present invention.

[0020] Reference numerals: 1. Magnetic adsorption tank; 2. Support; 3. Water inlet; 4. Reset and regeneration component; 41. Support shaft; 42. Support plate; 43. First brush; 44. Second brush; 45. Stirring blade; 46. Spray nozzle; 5. Adsorption conversion component; 51. Track; 52. Rack; 53. Gear; 54. Upper gear; 55. Intermediate shaft; 56. Rewinding shaft; 57. Adsorption sheet; 6. Rewinding component; 61. Lower gear; 62. Extrusion block; 63. Slide plate; 64. Receiving groove; 65. Lifting wedge; 66. Positioning plate; 67. Ball bearing. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0023] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Example 1:

[0027] This embodiment proposes a groundwater remediation device for chromium contamination, such as... Figure 1 As shown, it includes a magnetic adsorption tank 1, a bracket 2 fixedly installed at the bottom of the magnetic adsorption tank 1, and a water inlet 3 fixedly installed at the top of the magnetic adsorption tank 1.

[0028] like Figures 2-4 As shown, the inner wall of the magnetic adsorption tank 1 is provided with an adsorption conversion component 5. The adsorption conversion component 5 includes a track 51, a rack 52, a gear 53, a winding shaft 56, and an adsorption plate 57. Four tracks 51 are provided and are evenly fixedly installed on the top and bottom inner walls of the magnetic adsorption tank 1. The track 51 adopts a curved U-shaped structure. The winding shaft 56 is slidably connected to the inner wall of the track 51. The adsorption plate 57 is fixedly installed at the rod of the winding shaft 56. The adsorption plate 57 is in contact with the water inside the magnetic adsorption tank 1. The adsorption plate 57 has the same shape as the track 51 and moves along the track 51.

[0029] The track 51 is divided into an inner curved section and an outer curved section. When the adsorption plate 57 moves from the inner curved section to the outer curved section of the track 51, the contact surface between the adsorption plate 57 and the groundwater changes. This prevents the adsorption plate 57 from being too thick, which would cause the side in contact with the groundwater to become saturated with chromium and become blocked, while the other side cannot contact the groundwater and remains unsaturated. By changing the position of the adsorption plate 57 in contact with the groundwater, both sides of the adsorption plate 57 can contact the groundwater and adsorb chromium to reach saturation, thereby increasing the absorption capacity and reducing the number of cleaning cycles.

[0030] A rubber strip is fixedly installed on the part of the adsorption sheet 57 that extends into the track 51. The interior of the adsorption sheet 57 is filled with magnetic nano iron oxide particles. The rubber strip replaces the adsorption sheet 57 to prevent the adsorption sheet 57 from breaking and the particles inside from detaching.

[0031] like Figure 5As shown, gears 53 are rotatably connected to both the upper and lower ends of the take-up shaft 56. A single row of racks 52 is opened on the inner wall of the track 51. The gears 53 mesh with the racks 52. An intermediate block is rotatably connected to the top of the gears 53. The intermediate block slides on the inner wall of the track 51. A stepper motor is fixedly installed on the top of the intermediate block. The stepper motor is fixedly connected to the gears 53 through a rotating shaft.

[0032] A stepper motor drives gear 53 to rotate. Gear 53 engages with rack 52, causing gear 53 to rotate and move along track 51. This movement of gear 53, in turn, moves the take-up shaft 56 and the magnetic adsorption sheet 57. The magnetic adsorption sheet 57 moves along track 51 to change its surface. An intermediate block prevents gear 53 from not rotating while the stepper motor rotates. After one magnetic adsorption cycle, the stepper motor drives gear 53 to the end of track 51 for multiple conversions.

[0033] In this embodiment, the gear 53 and rack 52 work together to move the gear 53 along the track 51, thereby moving the winding shaft 56 and the adsorption sheet 57. When the adsorption sheet 57 moves from the inner curved part to the outer curved part of the track 51, the contact surface between the adsorption sheet 57 and the water is changed, so that both sides of the adsorption sheet 57 can contact the groundwater. This avoids the adsorption sheet 57 being filled with too many particles, which would cause the particles on one side of the adsorption sheet 57 to be saturated with chromium, while the other side does not absorb chromium. Changing the absorption surface increases the absorption amount and reduces the number of cleaning times.

[0034] Example 2:

[0035] Based on Example 1, this example proposes a groundwater remediation device for chromium contaminants, such as... Figure 5 and 6 As shown, an intermediate shaft 55 is fixedly installed at the bottom center of the gear 53, and the bottom end of the intermediate shaft 55 is rotatably connected to the winding shaft 56. An upper meshing tooth 54 is fixedly installed at the bottom of the gear 53.

[0036] A winding component 6 is provided at the shaft of the intermediate shaft 55. The winding component 6 includes a lower tooth 61, a pressing block 62, a sliding plate 63, and a lifting wedge 65. The lower tooth 61 slides up and down at the intermediate shaft 55. The pressing block 62 is fixedly installed at the bottom of the lower tooth 61. The sliding plate 63 is fixedly installed at the bottom of the pressing block 62. The sliding plate 63 slides up and down at the top of the winding shaft 56. The lifting wedge 65 is fixedly installed on the inner wall of the end of the track 51. The pressing block 62 is in contact with the lifting wedge 65.

[0037] When gear 53 moves to the end position of track 51, the extrusion block 62 is squeezed by the lifting wedge block 65 and moves upward. At this time, the extrusion block 62 engages with the upper meshing tooth 54, so that the extrusion block 62 and the slide plate 63 cooperate to connect gear 53 and winding shaft 56 together. At this time, winding shaft 56 rotates with gear 53 to wind up the adsorption sheet 57, so that all positions on the adsorption sheet 57 are in contact with groundwater, thereby increasing the contact area.

[0038] like Figure 6 As shown, the upper tooth 54 includes multiple triangular blocks, which are arranged in a ring and adjacent triangular blocks are connected to each other. The shape of the lower tooth 61 is the same as that of the upper tooth 54, and adjacent triangular blocks are connected to each other so that the lower tooth 61 can mate with the upper tooth 54.

[0039] Initially, the extrusion block 62 contacts the take-up shaft 56. The extrusion block 62 has a hollow frustum-shaped structure. The inclination angle of the inclined surface of the lifting wedge 65 is the same as the inclination angle of the inclined surface of the extrusion block 62. The top of the take-up shaft 56 is provided with a receiving groove 64 to accommodate the slide plate 63, so that the lifting wedge 65 can extrude the extrusion block 62.

[0040] A positioning plate 66 is fixedly installed on the inner wall of the track 51 near the end. The positioning plate 66 has an arc-shaped notch on the side facing the gear 53. The cylindrical part of the gear 53 contacts the arc-shaped notch. A ball bearing 67 is rotatably connected to the arc-shaped notch of the positioning plate 66.

[0041] Two tracks 51 at the same height are arranged in a ring at equal angles on the inner wall of the magnetic adsorption tank 1. The two tracks 51 surround each other in a circle. A notch is opened at the end of the track 51, and the adsorption sheet 57 is exposed from the notch. The notch prevents the winding shaft 56 from getting stuck when winding the adsorption sheet 57. When the gear 53 moves to the end of the track 51, the gear 53 can no longer move and it spins freely, so that the winding shaft 56 can wind up the adsorption sheet 57.

[0042] Both ends of the adsorption sheet 57 are fixedly mounted with a winding shaft 56. Two gears 53 are installed inside a track 51. Initially, the two gears 53 are located at the two ends of the track 51 respectively. A stepper motor is connected to the center of each gear 53 so that the adsorption sheet 57 can be reset. The adsorption sheet 57 overlaps with the track 51.

[0043] In this embodiment, when the gear 53 moves to the end position of the track 51, the extrusion block 62 is squeezed by the lifting wedge block 65 and moves upward. At this time, the extrusion block 62 engages with the upper meshing tooth 54, and the gear 53 can no longer move along the track 51. At this time, the gear 53 rotates idling, so that the winding shaft 56 winds up the adsorption sheet 57, so that all positions on the adsorption sheet 57 are in contact with groundwater, further increasing the contact surface and improving the adsorption effect.

[0044] Example 3:

[0045] Based on Embodiment 1 or 2 above, this embodiment proposes a groundwater remediation device for chromium contaminants, such as... Figure 7 As shown, a reset and regeneration component 4 is provided in the middle of the track 51. The reset and regeneration component 4 includes a support shaft 41, a support plate 42, a first brush 43 and a second brush 44. Two symmetrically arranged support plates 42 are fixedly installed on the inner wall of the magnetic adsorption tank 1. The support shaft 41 is rotatably connected to the opposite side of the two support plates 42. The first brush 43 and the second brush 44 are fixedly installed on the side of the support plate 42. The first brush 43 and the second brush 44 are aligned with the adsorption sheet 57.

[0046] During the movement of the adsorption sheet 57, the adsorption sheet 57 comes into contact with the first brush 43 and the second brush 44. The first brush 43 and the second brush 44 remove impurities from the surface of the adsorption sheet 57 to prevent the deposits on the surface of the adsorption sheet 57 from affecting the magnetic adsorption of chromium.

[0047] The end of the track 51 is fixedly connected to the support plate 42. A rubber sheet is laid on one side of the support plate 42, which is attached to the adsorption sheet 57. A stirring blade 45 is rotatably connected to the inner wall of the magnetic adsorption tank 1. A water spray nozzle 46 is opened on the rod of the stirring blade 45. Water is sprayed from the water spray nozzle 46 to clean the adsorption sheet 57. In conjunction with the conversion surface of the adsorption sheet 57, both sides of the adsorption sheet 57 are cleaned to improve the cleaning effect.

[0048] In this embodiment, the adsorption sheet 57 contacts the first brush 43 and the second brush 44. The first brush 43 and the second brush 44 remove impurities from the surface of the adsorption sheet 57 to prevent the deposits on the surface of the adsorption sheet 57 from affecting the magnetic adsorption of chromium. When cleaning the adsorption sheet 57, the water spray nozzle 46 sprays water to clean the adsorption sheet 57 and works with the conversion surface of the adsorption sheet 57 to clean both sides of the adsorption sheet 57, thereby improving the cleaning effect and increasing the utilization rate.

[0049] like Figure 8 As shown, a groundwater remediation system for chromium contaminants includes the above-mentioned groundwater remediation equipment for chromium contaminants. First, impurities inside the groundwater are filtered through coarse filtration. Then, chromium in the groundwater is adsorbed through magnetic adsorption. Finally, the pH value of the groundwater is adjusted by adding acidic or alkaline regulators.

[0050] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A groundwater remediation device for chromium contamination, comprising: A magnetic adsorption tank (1), wherein a bracket (2) is fixedly installed at the bottom of the magnetic adsorption tank (1), and a water inlet (3) is fixedly installed at the top of the magnetic adsorption tank (1), characterized in that it further includes: The adsorption conversion component (5) includes a track (51), a rack (52), a gear (53), a winding shaft (56), and an adsorption sheet (57). Four tracks (51) are provided and are evenly fixedly installed on the top inner wall and bottom inner wall of the magnetic adsorption tank (1). The track (51) adopts a curved U-shaped structure. The winding shaft (56) is slidably connected to the inner wall of the track (51). The upper and lower ends of the winding shaft (56) are rotatably connected to the gear (53). A single row of racks (52) is opened on the inner wall of the track (51). The gear (53) meshes with the rack (52). The adsorption sheet (57) is fixedly installed on the shaft of the winding shaft (56). The adsorption sheet (57) is in contact with the water inside the magnetic adsorption tank (1). The adsorption sheet (57) has the same shape as the track (51). The adsorption sheet (57) moves along the track (51).

2. The groundwater remediation equipment for chromium contaminants according to claim 1, characterized in that: The track (51) is divided into an inner curved part and an outer curved part. When the adsorption sheet (57) moves from the inner curved part of the track (51) to the outer curved part, the contact surface between the adsorption sheet (57) and the groundwater changes. A rubber strip is fixedly installed on the part of the adsorption sheet (57) that extends into the track (51). A middle block is rotatably connected to the top of the gear (53). The middle block slides on the inner wall of the track (51). A stepper motor is fixedly installed on the top of the middle block. The stepper motor is fixedly connected to the gear (53) through a rotating shaft. The interior of the adsorption sheet (57) is filled with magnetic nano iron oxide particles.

3. The groundwater remediation equipment for chromium contaminants according to claim 2, characterized in that: Two tracks (51) at the same height are arranged in a ring at equal angles on the inner wall of the magnetic adsorption tank (1). The two tracks (51) surround each other in a ring. A notch is opened at the end of the track (51) and the adsorption sheet (57) is exposed from the notch. A winding shaft (56) is fixedly installed at both ends of the adsorption sheet (57). Two gears (53) are set inside one track (51). Initially, the two gears (53) are located at the two ends of the track (51) respectively, and the adsorption sheet (57) overlaps with the track (51).

4. The groundwater remediation equipment for chromium contaminants according to claim 3, characterized in that: An intermediate shaft (55) is fixedly installed at the bottom center of the gear (53). The bottom end of the intermediate shaft (55) is rotatably connected to the winding shaft (56). An upper gear (54) is fixedly installed at the bottom of the gear (53). The upper gear (54) includes multiple triangular blocks, which are arranged in a ring and adjacent triangular blocks are connected to each other.

5. The groundwater remediation equipment for chromium contaminants according to claim 4, characterized in that: A winding member (6) is provided at the shaft of the intermediate shaft (55). The winding member (6) includes a lower tooth (61), a pressing block (62), a sliding plate (63), and a lifting wedge (65). The lower tooth (61) slides up and down at the intermediate shaft (55). The pressing block (62) is fixedly installed at the bottom of the lower tooth (61). The sliding plate (63) is fixedly installed at the bottom of the pressing block (62). The sliding plate (63) slides up and down at the top of the winding shaft (56). The lifting wedge (65) is fixedly installed on the inner wall of the end of the track (51). The pressing block (62) contacts the lifting wedge (65).

6. The groundwater remediation equipment for chromium contaminants according to claim 5, characterized in that: The shape of the lower tooth (61) is the same as that of the upper tooth (54). Initially, the extrusion block (62) is in contact with the winding shaft (56). The extrusion block (62) adopts a hollow frustum structure. The inclination angle of the inclined surface of the lifting wedge (65) is the same as the inclination angle of the inclined surface of the extrusion block (62). The top of the winding shaft (56) is provided with a receiving groove (64) for accommodating the sliding plate (63).

7. The groundwater remediation equipment for chromium contaminants according to claim 6, characterized in that: A positioning plate (66) is fixedly installed on the inner wall of the track (51) near the end. The positioning plate (66) has an arc-shaped notch on the side facing the gear (53). The cylindrical part of the gear (53) contacts the arc-shaped notch. A ball bearing (67) is rotatably connected to the arc-shaped notch of the positioning plate (66).

8. The groundwater remediation equipment for chromium contaminants according to claim 7, characterized in that: A reset and regeneration component (4) is provided in the middle of the track (51). The reset and regeneration component (4) includes a support shaft (41), a support plate (42), a first brush (43), and a second brush (44). Two symmetrically arranged support plates (42) are fixedly installed on the inner wall of the magnetic adsorption tank (1). The support shaft (41) is rotatably connected to the opposite side of the two support plates (42). The first brush (43) and the second brush (44) are fixedly installed on the side of the support plate (42). The first brush (43) and the second brush (44) are aligned with the adsorption sheet (57).

9. The groundwater remediation equipment for chromium contaminants according to claim 8, characterized in that: The end of the track (51) is fixedly connected to the support plate (42). The support plate (42) is covered with a rubber sheet on one side of the adsorption sheet (57). The inner wall of the magnetic adsorption tank (1) is rotatably connected to a stirring blade (45). A water spray nozzle (46) is opened at the rod of the stirring blade (45).

10. A groundwater remediation system for chromium contamination, characterized in that, This includes the groundwater remediation equipment for chromium contaminants as described in claim 9.

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