Heavy metal polluted wetland soil remediation method

Abstract

The invention discloses a heavy metal polluted wetland soil remediation method, and belongs to the technical field of soil remediation. The invention discloses a heavy metal polluted wetland soil remediation method. The method comprises the following steps: S1, sampling soil in a to-be-remediated area; s2, detecting the content and components of heavy metals in the sampled soil; s3, forming a branch seat repairing agent for heavy metal in the soil in the to-be-repaired area; s4, to-be-remediated soil is crushed through soil remediation equipment and then flatly laid and sprayed, and the soil and the remediation agent are fully mixed to remove heavy metal in the soil; according to the invention, the tiled soil is fully mixed with the repairing agent during turning, so that the problem that the traditional sprayed repairing agent is difficult to effectively permeate and repair the soil in the prior art is solved, and the soil repairing effect is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of soil remediation, and in particular to a method for remediating wetland soil contaminated by heavy metals. Background Art

[0002] Soil remediation refers to the use of physical, chemical and biological methods to transfer, absorb, degrade and transform pollutants in the soil to reduce their concentration to an acceptable level, or to transform toxic and harmful pollutants into harmless substances. Fundamentally speaking, the technical principles of contaminated soil remediation can include: changing the form of pollutants in the soil or the way they are combined with the soil, reducing their mobility and bioavailability in the environment; reducing the concentration of harmful substances in the soil.

[0003] Existing soil remediation devices often directly place remediation agents on the land without loosening the soil, which makes it difficult for the drugs to be fully mixed with the soil, resulting in poor remediation effects. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a method for remediating wetland soil contaminated by heavy metals.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A method for remediating wetland soil contaminated by heavy metals comprises the following steps: S1. First, sample the soil in the area to be repaired; S2. Detect the heavy metal content and composition in the sampled soil; S3, a heavy metal component repair agent for the soil in the area to be repaired; S4. Use soil remediation equipment to break up the soil to be repaired and then spread it flat for spraying. The soil and the repair agent are fully mixed to remove heavy metals in the soil.

[0006] Preferably, the soil remediation equipment includes a remediation box, in which a vibrating frame is movably arranged, an elastic telescopic rod is arranged between the vibrating frame and the inner wall of the remediation box, the vibrating frame includes a crushing filter frame, a distribution hopper arranged at the bottom of the crushing filter frame, a plurality of conveying channels connected to the distribution hopper and a discharge frame, the discharge frame is provided with a secondary belt conveyor corresponding to the plurality of conveying channels one by one, a spraying assembly for repairing the soil on the secondary belt conveyor is arranged in the remediation box, a mounting plate is arranged at the front end of the remediation box, a soil shifting assembly and a main belt conveyor matched with the soil shifting assembly are arranged on the mounting plate, the end of the main belt conveyor is placed on the upper side of the vibrating frame, and an adjusting leg is arranged on the remediation box, and a walking wheel is arranged at the bottom of the adjusting leg through a support.

[0007] Preferably, the soil-moving assembly includes a rotating rod rotatably connected to the mounting plate, a soil-moving plate arranged on the rotating rod, a support plate fixed to the outer side of the mounting plate, and a driving motor fixed to the support plate and used for driving the rotating rod to rotate.

[0008] Preferably, the mounting plate is rotatably connected to a rotating shaft, a driven gear is provided on the rotating shaft, a driving gear meshing with the driven gear is provided on the rotating rod, a first synchronous wheel is provided on the rotating shaft and the output shaft of the main belt conveyor, and a first synchronous belt is provided between the two first synchronous wheels.

[0009] Preferably, the mounting plate is rotatably connected to a rotating shaft, the rotating shaft is provided with a reel and a movable gear, the rotating rod is provided with an incomplete gear meshing with the movable gear, a pull rope is wound around the reel, and the end of the pull rope away from the reel passes through a repair box and is connected to the vibration frame.

[0010] Preferably, a connecting plate is fixedly provided on the inner wall of the crushing filter frame, a first rotating rod is rotatably connected to the connecting plate, a crushing ball is provided on the first rotating rod through a connecting rod, a sub-gear is provided on the end of the first rotating rod, and a rack plate meshing with the sub-gear is fixedly provided on the inner wall of the repair box.

[0011] Preferably, the distribution hopper is provided with a plurality of feed troughs connected to the conveying channel, the inner wall of the feed trough is rotatably connected to a second rotating rod, the second rotating rod is provided with a material shifting plate, the second rotating rods of two adjacent feed troughs are each provided with a second synchronous wheel, and a second synchronous belt is provided between the two second synchronous wheels.

[0012] Preferably, the distribution hopper is rotatably connected to a third rotating rod, the third rotating rod is provided with a second gear, the second rotating rod is provided with a first gear meshing with the second gear, the third rotating rod and the output shafts of multiple auxiliary belt conveyors are provided with third synchronous wheels, and a third synchronous belt is provided between the multiple third synchronous wheels.

[0013] Preferably, two one-way gears are provided on one of the second rotating rods on the distribution hopper, and the two one-way gears both adopt a flywheel structure. A rack frame meshing with the two one-way gears is fixed on the inner wall of the repair box, and a tooth plate meshing with the two one-way gears is provided on the rack frame.

[0014] Preferably, the spray assembly includes a material box fixed in the repair box, a pump body is fixed on the material box, the water outlet end of the pump body is connected to a water pipe, the end of the water pipe away from the pump body passes through a discharge rack and is connected to a plurality of water spray plates, and the water spray plates are fixedly connected to the discharge rack.

[0015] Compared with the prior art, the present invention provides a method for remediating wetland soil contaminated by heavy metals, which has the following beneficial effects: 1. The heavy metal contaminated wetland soil remediation method uses a soil-moving assembly in conjunction with a main belt conveyor to transport the soil to be remediated to a vibration frame, so that the vibration frame layers the soil to be remediated and spreads it into a thin layer, so that the remediation agent can be fully mixed with the soil, thereby solving the problem in the prior art that it is difficult for the traditional spraying remediation agent to effectively penetrate and remediate the soil, thereby ensuring the soil remediation effect.

[0016] 2. The method for remediating the wetland soil contaminated by heavy metals operates the soil-moving assembly, which drives the vibration frame to move up and down reciprocatingly through the pull rope, so that the sub-gear on the vibration frame reciprocates with the rack plate, and then the first rotating rod drives the crushing ball to crush the soil on the crushing filter frame, thereby ensuring the contact area between the subsequent soil and the repair agent, and improving the repair effect of the repair agent on the soil.

[0017] 3. In the method for remediating the wetland soil contaminated by heavy metals, when the vibration frame moves back and forth up and down, the material-shifting plate on the second rotating rod shifts the soil accumulated at the feed trough to avoid soil accumulation and blockage at the feed trough, which affects the continuity of soil falling, and enables a quantitative amount of soil and a quantitative remediation agent to be effectively mixed and reacted, thereby avoiding waste of the remediation agent.

[0018] 4. The heavy metal contaminated wetland soil remediation method can automatically turn over the soil spread on the secondary belt conveyor when the vibration frame shakes back and forth up and down, so that the soil and the remediation agent can contact with multiple areas and be fully mixed, thereby improving the remediation effect of the remediation agent on the heavy metal contaminated soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 A partial enlarged structural diagram of the middle part; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure of the middle B part; Figure 5 It is a structural schematic diagram of the vibration frame of the present invention; Figure 6 It is a schematic cross-sectional structure diagram of the vibration frame of the present invention; Figure 7 It is a schematic diagram of the external structure of the one-way gear of the present invention.

[0020] In the figure: 1. Repair box; 101. Elastic telescopic rod; 2. Vibrating frame; 201. Crushing filter frame; 202. Distributing hopper; 203. Conveying channel; 204. Discharging frame; 205. Auxiliary belt conveyor; 3. Mounting plate; 4. Main belt conveyor; 5. Adjusting legs; 501. Traveling wheel; 6. Rotating rod; 601. Earth-moving plate; 602. Support plate; 603. Driving motor; 604. Driving gear; 605. Incomplete gear; 7. Rotating shaft; 701. Driven gear; 8. First synchronous wheel; 9. Rotating shaft; 90 1. Reel; 902. Movable gear; 10. Pull rope; 11. Connecting plate; 111. First rotating rod; 112. Crushing ball; 113. Sub-gear; 12. Rack plate; 13. Feed chute; 131. Second rotating rod; 1311. First gear; 132. Material shifting plate; 14. Second synchronous wheel; 15. Third synchronous wheel; 16. One-way gear; 17. Rack rack; 171. Gear plate; 18. Material box; 181. Pump body; 182. Water guide pipe; 183. Water spraying plate; 19. Third rotating rod; 191. Second gear. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example: Refer to Figure 1 and Figure 3A method for remediating wetland soil contaminated by heavy metals comprises the following steps: S1. First, sample the soil in the area to be repaired; S2. Detect the heavy metal content and composition in the sampled soil; S3, a heavy metal component repair agent for the soil in the area to be repaired; S4. Use soil remediation equipment to break up the soil to be repaired and then spread it flat for spraying. The soil and the repair agent are fully mixed to remove heavy metals in the soil.

[0025] Reference Figure 1 , Figure 3 , Figure 5 and Figure 6 As a preferred technical solution of the present invention, the soil remediation equipment includes a remediation box 1, in which a vibration frame 2 is movably arranged, an elastic telescopic rod 101 is arranged between the vibration frame 2 and the inner wall of the remediation box 1, the vibration frame 2 includes a crushing filter frame 201, a distribution hopper 202 arranged at the bottom of the crushing filter frame 201, a plurality of conveying channels 203 connected to the distribution hopper 202, and a discharge frame 204, on which auxiliary belt conveyors 205 corresponding to the plurality of conveying channels 203 are arranged, a spraying assembly for repairing the soil on the auxiliary belt conveyor 205 is arranged in the remediation box 1, a mounting plate 3 is arranged at the front end of the remediation box 1, a soil-moving assembly and a main belt conveyor 4 matched with the soil-moving assembly are arranged on the mounting plate 3, and the end of the main belt conveyor 4 is placed on the upper side of the vibration frame 2, and an adjusting leg 5 is arranged on the remediation box 1, and a walking wheel 501 is arranged at the bottom of the adjusting leg 5 through a support.

[0026] Specifically, when the soil remediation equipment moves to the area of ​​soil to be remediated, the control and adjustment legs 5 are retracted to lower the height between the remediation box 1 and the ground, so that the soil-moving assembly can penetrate into the soil. Then, the soil-moving assembly is controlled to move, and the soil-moving assembly moves the soil and sends the soil to the main belt conveyor 4. Evenly distributed baffles can be set on the belt of the main belt conveyor 4 to prevent the soil from falling when the soil is transported upward. The main belt conveyor 4 transports the soil to the vibrating frame 2. The operation of the soil-moving assembly drives the vibrating frame 2 to shake up and down, so that the soil is crushed in the crushing filter frame 201 and falls into the dividing hopper 202, and the dividing material is The bucket 202 transports the crushed soil to each conveying channel 203 in an orderly manner, and then drops it on the auxiliary belt conveyor 205 at the end of each conveying channel 203. The soil is spread on the auxiliary belt conveyor 205 in a thin layer. The spraying component sprays the repair agent on the thin layer of soil on the auxiliary belt conveyor 205, and the soil spread on the auxiliary belt conveyor 205 can automatically turn over with the shaking of the vibration frame 2, so that the soil and the repair agent are in contact with multiple areas and fully mixed, which solves the problem in the prior art that the traditional spraying repair agent is difficult to effectively penetrate and repair the soil, thereby ensuring the soil repair effect.

[0027] Reference Figure 1 , Figure 2 and Figure 3 As a preferred technical solution of the present invention, the soil-moving assembly includes a rotating rod 6 rotatably connected to the mounting plate 3, a soil-moving plate 601 arranged on the rotating rod 6, a support plate 602 fixedly arranged on the outer side of the mounting plate 3, and a drive motor 603 fixedly arranged on the support plate 602 and used to drive the rotating rod 6 to rotate; specifically, when the soil-moving assembly is working, the drive motor 603 is controlled to operate so that the output shaft of the drive motor 603 drives the rotating rod 6 to rotate, and when the rotating rod 6 rotates, the soil-moving plate 601 is driven to rotate, so that the soil-moving plate 601 moves the soil on the ground to the main belt conveyor 4, thereby realizing the moving and loading of the soil.

[0028] Reference Figure 1 , Figure 2 and Figure 3 As a preferred technical solution of the present invention, a rotating shaft 7 is rotatably connected to the mounting plate 3, a driven gear 701 is provided on the rotating shaft 7, a driving gear 604 meshing with the driven gear 701 is provided on the rotating rod 6, and a first synchronous wheel 8 is provided on the rotating shaft 7 and the output shaft of the main belt conveyor 4, and a first synchronous belt is provided between the two first synchronous wheels 8; specifically, when the soil-moving assembly is working, the rotation of the rotating rod 6 will drive the driving gear 604 to mesh with the driven gear 701 on the rotating shaft 7, so that the driven gear 701 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the output shaft of the main belt conveyor 4 to rotate under the action of the first synchronous wheel 8 and the first synchronous belt, so that the main belt conveyor 4 can transport the soil.

[0029] Reference Figure 1 , Figure 2 and Figure 3 As a preferred technical solution of the present invention, a rotating shaft 9 is rotatably connected to the mounting plate 3, a reel 901 and a movable gear 902 are provided on the rotating shaft 9, an incomplete gear 605 meshing with the movable gear 902 is provided on the rotating rod 6, a pull rope 10 is wound around the reel 901 and connected, the end of the pull rope 10 away from the reel 901 passes through the repair box 1 and is connected to the vibration frame 2; specifically, when the rotating rod 6 rotates, it drives the incomplete gear 605 to rotate, and when the incomplete gear 605 rotates, it intermittently meshes with the movable gear 902 on the rotating shaft 9. When the incomplete gear 605 meshes with the movable gear 902, the rotating shaft 9 reels the pull rope 10 through the reel 901, so that the pull rope 10 pulls up the vibration frame 2, and when the incomplete gear 605 is not meshed with the movable gear 902, the pull rope 10 is no longer subjected to force, and the vibration frame 2 is reset and moved downward under the pull of its own weight and the elastic telescopic rod 101, thereby realizing the up and down reciprocating movement of the vibration frame 2.

[0030] Reference Figure 1 , Figure 2 , Figure 3and Figure 4 As a preferred technical solution of the present invention, a connecting plate 11 is fixedly provided on the inner wall of the crushing filter frame 201, and a first rotating rod 111 is rotatably connected to the connecting plate 11. A crushing ball 112 is provided on the first rotating rod 111 through a connecting rod, and a sub-gear 113 is provided at the end of the first rotating rod 111. A rack plate 12 meshing with the sub-gear 113 is fixedly provided on the inner wall of the repair box 1; specifically, when the vibration frame 2 reciprocates up and down, the sub-gear 113 on the outer side of the first rotating rod 111 on the vibration frame 2 reciprocates with the rack plate 12, so that the first rotating rod 111 drives the crushing ball 112 to swing back and forth, and the crushing ball 112 crushes the soil on the crushing filter frame 201, thereby ensuring the contact area between the subsequent soil and the repair agent, and improving the repair effect of the repair agent on the soil.

[0031] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As a preferred technical solution of the present invention, the feed hopper 202 is provided with a plurality of feed troughs 13 connected to the conveying channel 203, the inner wall of the feed trough 13 is rotatably connected with a second rotating rod 131, and a material shifting plate 132 is arranged on the second rotating rod 131, and a second synchronous wheel 14 is arranged on the second rotating rod 131 of two adjacent feed troughs 13, and a second synchronous belt is arranged between the two second synchronous wheels 14.

[0032] Furthermore, two one-way gears 16 are provided on one of the second rotating rods 131 on the dividing hopper 202, and both of the one-way gears 16 adopt a flywheel structure. A rack rack 17 meshing with the two one-way gears 16 is fixed on the inner wall of the repair box 1, and a toothed plate 171 meshing with the two one-way gears 16 is provided on the rack rack 17.

[0033] Specifically, when the vibration frame 2 moves back and forth up and down, the two one-way gears 16 on the second rotating rod 131 mesh with the toothed plate 171 on the rack frame 17 for transmission, but the two one-way gears 16 can only drive the second rotating rod 131 to rotate counterclockwise all the time, and the material shifting plate 132 on the second rotating rod 131 shifts the soil accumulated at the feed trough 13 to avoid soil accumulation and blockage at the feed trough 13, which affects the continuity of soil falling, so that the soil is spread in a thin layer on the auxiliary belt conveyor 205, and the quantitative soil and the quantitative repair agent are effectively mixed and reacted to avoid waste of the repair agent, and the reciprocating shaking of the vibration frame 2 up and down can also prevent soil from accumulating in the conveying channel 203; it should be noted that the flywheel structure is a prior art and will not be elaborated here.

[0034] Reference Figure 3 , Figure 5 and Figure 6As a preferred technical solution of the present invention, a third rotating rod 19 is rotatably connected to the dividing hopper 202, and a second gear 191 is provided on the third rotating rod 19, and a first gear 1311 meshing with the second gear 191 is provided on the second rotating rod 131, and a third synchronous wheel 15 is provided on the output shafts of the third rotating rod 19 and multiple auxiliary belt conveyors 205, and a third synchronous belt is provided between the multiple third synchronous wheels 15; specifically, when the second rotating rod 131 rotates, it drives the first gear 1311 to mesh with the second gear 191 on the third rotating rod 19, so that the third rotating rod 19 and the second rotating rod 131 rotate in opposite directions, and the third rotating rod 19 drives the output shafts of multiple auxiliary belt conveyors 205 to rotate under the action of the third synchronous wheel 15 and the third synchronous belt, so that the auxiliary belt conveyor 205 transports the soil falling from the conveying channel 203.

[0035] Reference Figure 3 As a preferred technical solution of the present invention, the spraying assembly includes a material box 18 fixedly installed in the repair box 1, a pump body 181 is fixedly installed on the material box 18, the water outlet end of the pump body 181 is connected to a water guide pipe 182, the end of the water guide pipe 182 away from the pump body 181 passes through the discharge rack 204 and is connected to a plurality of water spray plates 183, and the water spray plates 183 are fixedly connected to the discharge rack 204; specifically, when the spraying assembly is working, the pump body 181 is controlled to operate so that the pump body 181 draws out the repair agent in the material box 18 and discharges it to the water spray plate 183 through the water guide pipe 182, and the water spray plate 183 sprays the repair agent on the thin layer of soil laid on the secondary belt conveyor 205 to ensure the soil repair effect.

[0036] Working principle: When the soil-moving assembly is working, the driving motor 603 is controlled to run, so that the output shaft of the driving motor 603 drives the rotating rod 6 to rotate, and when the rotating rod 6 rotates, the soil-moving plate 601 is driven to rotate, so that the soil-moving plate 601 moves the soil on the ground to the main belt conveyor 4, thereby realizing the soil-moving loading; The rotation of the rotating rod 6 drives the driving gear 604 to mesh with the driven gear 701 on the rotating shaft 7, so that the driven gear 701 drives the rotating shaft 7 to rotate. The rotating shaft 7 drives the output shaft of the main belt conveyor 4 to rotate under the action of the first synchronous wheel 8 and the first synchronous belt, so that the main belt conveyor 4 can transport the soil. When the rotating rod 6 rotates, the incomplete gear 605 is driven to rotate. When the incomplete gear 605 rotates, it is intermittently meshed with the movable gear 902 on the rotating shaft 9. When the incomplete gear 605 is meshed with the movable gear 902, the rotating shaft 9 reels the pull rope 10 through the reel 901, so that the pull rope 10 pulls up the vibration frame 2. When the incomplete gear 605 is not meshed with the movable gear 902, the pull rope 10 is no longer stressed, and the vibration frame 2 is reset and moved downward under the gravity of its own weight and the pull of the elastic telescopic rod 101, so that the vibration frame 2 can reciprocate up and down. When the vibration frame 2 reciprocates up and down, the sub-gear 113 on the outer side of the first rotating rod 111 on the vibration frame 2 reciprocates with the rack plate 12, so that the first rotating rod 111 drives the crushing ball 112 to swing back and forth, and the crushing ball 112 crushes the soil on the crushing filter frame 201; The crushed soil falls into the dividing hopper 202, and the material-moving plate 132 on the second rotating rod 131 moves the soil accumulated at the feeding trough 13 to avoid soil accumulation and blockage at the feeding trough 13, which affects the continuity of soil falling, so that the soil is spread on the auxiliary belt conveyor 205 in a thin layer, and the quantitative soil and the quantitative repair agent are effectively mixed and reacted to avoid the waste of the repair agent, and the up and down reciprocating shaking of the vibration frame 2 can also prevent the soil from accumulating in the conveying channel 203; The distribution hopper 202 transports the crushed soil to each conveying channel 203 in an orderly manner, and then drops it onto the auxiliary belt conveyor 205 at the end of each conveying channel 203. The soil is spread on the auxiliary belt conveyor 205 in a thin layer, and the spraying component sprays the repair agent on the thin layer of soil on the auxiliary belt conveyor 205. The soil spread on the auxiliary belt conveyor 205 can automatically turn over with the shaking of the vibration frame 2, so that the soil and the repair agent are in contact with multiple areas and are fully mixed, which solves the problem in the prior art that the traditional spraying repair agent is difficult to effectively penetrate and repair the soil, thereby ensuring the soil repair effect.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for remediating wetland soil contaminated by heavy metals, characterized in that: The following steps are involved: S1. First, sample the soil in the area to be repaired; S2. Detect the heavy metal content and composition in the sampled soil; S3, a heavy metal component repair agent for the soil in the area to be repaired; S4. Use soil remediation equipment to break up the soil to be repaired, spread it flat and spray it, and fully mix the soil and the repair agent to remove heavy metals in the soil.

2. A method for remediating heavy metal contaminated wetland soil according to claim 1, characterized in that: The soil remediation equipment comprises a remediation box (1), a vibration frame (2) movably arranged in the remediation box (1), an elastic telescopic rod (101) arranged between the vibration frame (2) and the inner wall of the remediation box (1), the vibration frame (2) comprising a crushing filter frame (201), a material distribution hopper (202) arranged at the bottom of the crushing filter frame (201), a plurality of conveying channels (203) connected to the material distribution hopper (202), and a material discharge frame (204), the material discharge frame (204) being provided with a plurality of conveying channels (203) corresponding to each other in a one-to-one manner. A secondary belt conveyor (205) is provided in the repair box (1) with a spraying assembly for repairing soil on the secondary belt conveyor (205); a mounting plate (3) is provided at the front end of the repair box (1); a soil-moving assembly and a main belt conveyor (4) matched with the soil-moving assembly are provided on the mounting plate (3); the end of the main belt conveyor (4) is placed on the upper side of the vibration frame (2); an adjustment leg (5) is provided on the repair box (1); and a walking wheel (501) is provided at the bottom of the adjustment leg (5) via a support.

3. A method for remediating heavy metal-contaminated wetland soil according to claim 2, characterized in that: The soil-moving assembly comprises a rotating rod (6) rotatably connected to the mounting plate (3), a soil-moving plate (601) arranged on the rotating rod (6), a support plate (602) fixedly arranged on the outside of the mounting plate (3), and a driving motor (603) fixedly arranged on the support plate (602) and used for driving the rotating rod (6) to rotate.

4. A method for remediating heavy metal-contaminated wetland soil according to claim 3, characterized in that: The mounting plate (3) is rotatably connected to a rotating shaft (7), a driven gear (701) is provided on the rotating shaft (7), a driving gear (604) meshing with the driven gear (701) is provided on the rotating rod (6), first synchronous wheels (8) are provided on the rotating shaft (7) and the output shaft of the main belt conveyor (4), and a first synchronous belt is provided between the two first synchronous wheels (8).

5. A method for remediating heavy metal-contaminated wetland soil according to claim 4, characterized in that: The mounting plate (3) is rotatably connected to a rotating shaft (9), the rotating shaft (9) is provided with a reel (901) and a movable gear (902), the rotating rod (6) is provided with an incomplete gear (605) meshing with the movable gear (902), a pull rope (10) is wound around the reel (901), and one end of the pull rope (10) away from the reel (901) passes through the repair box (1) and is connected to the vibration frame (2).

6. A method for remediating heavy metal-contaminated wetland soil according to claim 5, characterized in that: A connecting plate (11) is fixedly provided on the inner wall of the crushing filter frame (201), a first rotating rod (111) is rotatably connected to the connecting plate (11), a crushing ball (112) is provided on the first rotating rod (111) via a connecting rod, a sub-gear (113) is provided at the end of the first rotating rod (111), and a rack plate (12) meshing with the sub-gear (113) is fixedly provided on the inner wall of the repair box (1).

7. A method for remediating heavy metal-contaminated wetland soil according to claim 6, characterized in that: The material distribution hopper (202) is provided with a plurality of feed troughs (13) connected to the conveying channel (203); the inner wall of the feed trough (13) is rotatably connected to a second rotating rod (131); a material shifting plate (132) is provided on the second rotating rod (131); second synchronous wheels (14) are provided on the second rotating rods (131) of two adjacent feed troughs (13); and a second synchronous belt is provided between the two second synchronous wheels (14).

8. A method for remediating wetland soil contaminated by heavy metals according to claim 7, characterized in that: The material distribution hopper (202) is rotatably connected to a third rotating rod (19), the third rotating rod (19) is provided with a second gear (191), the second rotating rod (131) is provided with a first gear (1311) meshing with the second gear (191), the third rotating rod (19) and the output shafts of the plurality of auxiliary belt conveyors (205) are both provided with third synchronous wheels (15), and a third synchronous belt is provided between the plurality of third synchronous wheels (15).

9. A method for remediating heavy metal-contaminated wetland soil according to claim 8, characterized in that: One of the second rotating rods (131) on the material distribution hopper (202) is provided with two one-way gears (16), and the two one-way gears (16) both adopt a flywheel structure. A rack frame (17) meshing with the two one-way gears (16) is fixedly provided on the inner wall of the repair box (1), and a toothed plate (171) meshing with the two one-way gears (16) is provided on the rack frame (17).

10. The method for remediating wetland soil contaminated by heavy metals according to claim 1, characterized in that: The spray assembly comprises a material box (18) fixedly arranged in the repair box (1); a pump body (181) is fixedly arranged on the material box (18); a water outlet end of the pump body (181) is connected to a water guide pipe (182); an end of the water guide pipe (182) away from the pump body (181) passes through a material discharge rack (204) and is connected to a plurality of water spray plates (183); and the water spray plates (183) are fixedly connected to the material discharge rack (204).

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