A permeable reaction wall system with clearing and blocking function and its operation method

Abstract

The present invention provides a permeable reaction wall system with a clearing and blocking function and an operation method thereof. The permeable reaction wall system includes a permeable reaction wall body, a plug-in device and a clearing and blocking device; the permeable reaction wall body includes a box body, in which a plurality of permeation reaction groups are arranged; the permeation reaction group includes a plurality of permeation units connected in sequence, the permeation unit includes a column tube, in which a permeation assembly is arranged; the permeation assembly includes a mesh column, in which an opening at the bottom end of the mesh column is provided with an openable and closable bottom plate, and the mesh column is filled with active material; the column tube is fixedly connected to the box body, and the outer wall of the mesh column and the inner wall of the column tube are gap-matched; an openable and closable cover plate is provided at the opening of the box body; the plug-in device is used to pull the permeation assembly out of the column tube and insert it into the column tube; the clearing and blocking device is used to clean blockages on the surface and inside of the mesh column. The permeable reaction wall system with a clearing and blocking function provided by the present invention and an operation method thereof can effectively ensure the purification performance of the permeable reaction wall system, and the construction operation is simple.

Description

Technical Field

[0001] The present invention belongs to the technical field of groundwater remediation, and in particular relates to a permeable reaction wall system with clearing and blocking functions and an operation method thereof. Background Art

[0002] During the operation of a permeable reaction wall, clogging of the filling material will greatly affect its hydraulic performance, resulting in a reduction in the treatment effect and lifespan of the permeable reaction wall. The active materials that the permeable reaction wall relies on are buried deep underground. If the active materials lose their activity, in order to improve the purification performance and service life of the permeable reaction wall, large-scale excavation is usually adopted to replace them and reinstall the reaction wall system. The construction operation is complicated and costly, the treatment method is extensive and wastes resources, and it is also easy to cause secondary pollution and cannot meet the actual application needs. In addition, during the operation of the permeable reaction wall, the green and lasting removal of pollutants in groundwater is inseparable from the active degradation of microorganisms. However, there are usually practical problems such as insufficient nutrient supply or insufficient number of degrading bacteria in the permeable reaction wall, which inhibits the biodegradation performance in the permeable reaction wall and restricts the promotion and use of permeable reaction wall technology. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a permeable reaction wall system with a clearing and blocking function and an operation method thereof, which can effectively ensure the purification performance of the permeable reaction wall system and is simple to construct and operate.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] In the first aspect, the present invention provides a permeable reaction wall system with a clearing function, comprising a permeable reaction wall, a plug-in device and a clearing device, wherein the plug-in device and the clearing device are installed above the permeable reaction wall; the permeable reaction wall comprises a box with an opening at the top, and a plurality of permeation reaction groups are arranged in the box; each permeation reaction group comprises a plurality of permeation units connected in sequence, and the permeation unit comprises a column, and a permeation assembly is arranged in the column; the permeation assembly comprises a mesh column with upper and lower openings, and an openable bottom plate is provided at the opening at the bottom end of the mesh column, and the mesh column is filled with active material; the column is fixedly connected to the box, and the outer wall of the mesh column is gap-fitted with the inner wall of the column; an openable and closable cover is provided at the opening of the box; the plug-in device is used to pull out the permeation assembly from the column and insert the permeation assembly into the column; the clearing device is used to clean blockages on the surface of the mesh column and between the active material.

[0006] As a further improvement of the present invention, the blockage clearing device includes an annular frame, a scraper assembly, a blockage remover injection assembly, a vibration assembly, and a bacterial liquid injection assembly, wherein the scraper assembly, blockage remover injection assembly, vibration assembly, and bacterial liquid injection assembly are all mounted on the annular frame;

[0007] The scraper assembly includes a first annular bracket and a plurality of first arc-shaped support rods, the first annular bracket being concentrically mounted on the annular frame via a first rotating mechanism, and the first arc-shaped support rods being mounted on the first annular bracket via a first telescopic mechanism; the first rotating mechanism is used to drive the first annular bracket to rotate, and the first telescopic mechanism is used to drive the first arc-shaped support rods to move toward or away from the center of the first annular bracket; all the first arc-shaped support rods can be spliced together to form a circular ring concentric with the first annular bracket and located within the first annular bracket under the drive of the first telescopic mechanism; a spiral blade is provided on the side of the first arc-shaped support rod away from the first annular bracket;

[0008] The blocking agent injection assembly includes a second annular support and a plurality of first arc-shaped branch pipes. The second annular support is concentrically mounted on the annular frame via a second rotating mechanism, and the first arc-shaped branch pipes are mounted on the second annular support via a second telescopic mechanism. The second rotating mechanism is used to drive the second annular support to rotate, and the second telescopic mechanism is used to drive the first arc-shaped branch pipes to move toward or away from the center of the second annular support. All the first arc-shaped branch pipes can be spliced together to form a circular ring concentric with the second annular support and located within the second annular support under the drive of the second telescopic mechanism. A plurality of first injection heads are provided on the side of the first arc-shaped branch pipe away from the second annular support.

[0009] The vibration assembly includes a first annular support plate and a plurality of first curved support plates, the first annular support plate being mounted on the annular frame via a vibration member, and the first curved support plates being mounted on the first annular support plate via a third telescopic mechanism; the vibration member is used to drive the first annular support plate to vibrate, and the third telescopic mechanism is used to drive the first curved support plates to move toward or away from the center of the first annular support plate;

[0010] The bacterial liquid injection assembly includes a third annular bracket and a plurality of second arc-shaped branches. The third annular bracket is concentrically mounted on the annular frame via a third rotating mechanism, and the second arc-shaped branches are mounted on the third annular bracket via a fourth telescopic mechanism. The third rotating mechanism is used to drive the third annular bracket to rotate, and the fourth telescopic mechanism is used to drive the second arc-shaped branches to move toward or away from the center of the third annular bracket. All the second arc-shaped branches can be spliced together to form a circular ring concentric with the third annular bracket and located within the third annular bracket under the drive of the fourth telescopic mechanism. A plurality of second injection heads are provided on the side of the second arc-shaped branches away from the third annular bracket.

[0011] As a further improvement of the present invention, it also includes a replacement device, which is used to replace the active material in the net column; the replacement device includes a replacement frame, an upper telescopic frame, a lower telescopic frame and a manipulator, and the upper telescopic frame, the lower telescopic frame and the manipulator are all installed on the replacement frame; the lower telescopic frame is provided with a recovery bag with a top opening; the upper telescopic frame is provided with a discharge barrel, and the bottom end of the discharge barrel is provided with a telescopic plate for opening and closing the bottom end opening of the discharge barrel; the manipulator is used to open and close the bottom plate at the bottom end of the net column.

[0012] As a further improvement of the present invention, the cover plate includes a plate frame and several plate units, and the plate units are hinged to the plate frame; a dirt collecting pocket is provided on the upper surface of the plate unit; a water guide groove is provided on the side where the plate unit is hinged to the plate frame, and a water blocking weir is provided on the other sides; a water storage cavity is provided at the connection between the plate frame and the plate unit, and the water storage cavity is communicated with the water guide groove.

[0013] As a further improvement of the present invention, the number of the plate units is consistent with the number of the permeation units, and the plate units and the permeation units are arranged in a one-to-one correspondence.

[0014] As a further improvement of the present invention, the box body is provided with an inlet area, an infiltration area and an outlet area in sequence along the direction of groundwater flow, and several infiltration reaction groups are located in the infiltration area; the two ends of the infiltration reaction group are respectively connected to the inlet area and the outlet area; the inlet area and the outlet area are both filled with quartz sand.

[0015] As a further improvement of the present invention, the column tube and the net column are both cylindrical, and two adjacent permeation units are connected through a buffer layer.

[0016] In a second aspect, the present invention further provides a method for operating the permeable reactive wall system provided in the first aspect, comprising the following steps:

[0017] Step 10, determining the osmosis unit to be cleared and the osmosis unit to be replaced;

[0018] Specifically, the permeability coefficient of the permeability unit is calculated based on the groundwater flow rate at the inlet and outlet of the permeability unit; if the permeability coefficient of the permeability unit is lower than the permeability coefficient of the aquifer medium in the surrounding site, the permeability unit is determined to be the permeability unit to be cleared; if the permeability coefficients of all permeability units in the same permeability reaction group are not lower than the permeability coefficient of the aquifer medium in the surrounding site, and the pollutant concentration at the outlet of the permeability reaction group is higher than the risk control target value, then all permeability units in the permeability reaction group are determined to be the permeation units to be replaced;

[0019] Step 20, using the plug-in device and the clearing device to process all the infiltration units to be cleared one by one;

[0020] Step 30: All the infiltration units to be replaced are processed one by one using the plug-in device, the blockage clearing device and the replacement device.

[0021] As a further improvement of the present invention, in step 20, a single infiltration unit to be cleared is processed using an insertion and extraction device and a clearing device, specifically including:

[0022] Step 201: Move the plug-in device and the blockage clearing device to the top of the permeation unit, open the plate unit located above the permeation unit, use the plug-in device to lift the permeation assembly of the permeation unit out of the column, and then close the plate unit;

[0023] Step 202: All first telescopic mechanisms of the blockage clearing device drive all first arcuate support rods to move toward the center of the first annular support until the spiral blades abut the outer periphery of the top of the net post. The first rotation mechanism drives the first annular support to rotate the first arcuate support rods. Simultaneously, the blockage clearing device moves downward along the net post, and the spiral blades contact the surface of the net post to scrape away the blockage on the net post. When the blockage clearing device reaches the bottom of the net post, all first telescopic mechanisms drive all first arcuate support rods to move away from the center of the first annular support.

[0024] Step 203: The blockage clearing device moves upward along the net post until it reaches the top of the net post; all third telescopic mechanisms drive all first arcuate support plates to move toward the center of the first annular support plate until all first arcuate support plates abut against the outer periphery of the top of the net post; all vibrating members drive the first annular support plate to vibrate the first arcuate support plate, and then the net post vibrates, while the blockage clearing device moves downward along the net post; under the action of vibration, the blockage on the surface of the net post falls off and eventually falls into the dirt collecting pocket of the plate unit below; when the blockage clearing device reaches the bottom of the net post, the vibrating member is turned off, and all third telescopic mechanisms drive all first arcuate support plates to move away from the center of the first annular support plate;

[0025] In step 204, all second telescopic mechanisms drive all first arc-shaped branches to move toward the center of the second annular support until all first spray heads abut the outer periphery of the bottom end of the net post. The second rotation mechanism drives the second annular support to rotate the first arc-shaped branches. Simultaneously, the blockage clearing device moves upward along the net post. The first spray heads on the first arc-shaped branches spray a blockage remover into the net post. The blockage remover penetrates into the active material and dissolves blockages between the active materials. When the blockage clearing device reaches the top of the net post, all second telescopic mechanisms drive all first arc-shaped branches to move away from the center of the second annular support.

[0026] Step 205: All third telescopic mechanisms drive all first curved support plates to move toward the center of the first annular support plate until all first curved support plates abut the outer periphery of the top of the net post; all vibrators drive the first annular support plate to vibrate the first curved support plate, which in turn causes the net post to vibrate. Simultaneously, the blockage clearing device moves downward along the net post; under the action of vibration, blockages between the active materials fall off and eventually fall into the waste collection pocket of the plate unit below; the waste liquid of the blockage clearing agent flows into the water storage chamber through the water guide groove; when the blockage clearing device moves to the bottom of the net post, the vibrators are turned off; and all third telescopic mechanisms drive all first curved support plates to move away from the center of the first annular support plate.

[0027] Step 206: All fourth telescopic mechanisms drive all second curved branches toward the center of the third annular support until all second spray heads abut the outer periphery of the bottom end of the net post. The third rotation mechanism drives the third annular support to rotate the second curved branches. Simultaneously, the blockage clearing device moves upward along the net post. The second spray heads on the second curved branches spray bacterial solution into the interior of the net post, and the bacterial solution penetrates into the active material. When the blockage clearing device reaches the top of the net post, all fourth telescopic mechanisms drive all second curved branches away from the center of the third annular support. The blockage clearing device continues to move upward until it is above the net post.

[0028] Step 207: open the plate unit located above the permeation unit, place the permeation assembly into the column using a plug-in device, and then close the plate unit.

[0029] As a further improvement of the present invention, in step 30, a single infiltration unit to be replaced is processed using a plugging and unplugging device, a blocking removal device, and a replacement device, specifically including:

[0030] Step 301: Move the plug-in device and the blockage clearing device to the top of the permeation unit, open the plate unit located above the permeation unit, use the plug-in device to lift the permeation assembly of the permeation unit out of the column, and then close the plate unit;

[0031] Step 302: All first telescopic mechanisms of the blockage clearing device drive all first arcuate support rods to move toward the center of the first annular support until the spiral blades abut the outer periphery of the top of the net post. The first rotating mechanism drives the first annular support to rotate the first arcuate support rods. Simultaneously, the blockage clearing device moves downward along the net post. The spiral blades contact the surface of the net post, scraping away blockages on the surface of the net post. The blockages on the surface of the net post fall into the dirt collection pocket of the lower plate unit. When the blockage clearing device reaches the bottom of the net post, all first telescopic mechanisms drive all first arcuate support rods to move away from the center of the first annular support.

[0032] Step 303: The blockage clearing device moves upward along the net post until it reaches the top of the net post; all third telescopic mechanisms drive all first arcuate support plates to move toward the center of the first annular support plate until the first arcuate support plate abuts the outer periphery of the top of the net post; all vibrating members drive the first annular support plate to vibrate the first arcuate support plate, and then the net post vibrates, while the blockage clearing device moves downward along the net post; under the action of vibration, the blockage on the surface of the net post falls off and eventually falls into the dirt collecting pocket of the plate unit below; when the blockage clearing device reaches the bottom of the net post, the vibrating member is turned off; all third telescopic mechanisms drive all first arcuate support plates to move away from the center of the first annular support plate; the blockage clearing device moves to a position away from the net post;

[0033] Step 304: Move the replacement device to the vicinity of the net post, extend the lower telescopic frame so that the recovery bag is directly below the net post, and use a robot to open the bottom plate at the bottom of the net post, allowing the active material in the net post to fall into the recovery bag. Then, use the robot to close the bottom plate at the bottom of the net post. Extend the upper telescopic frame so that the discharge barrel is directly above the net post, retract the telescopic plate at the bottom of the discharge barrel, and new active material in the discharge barrel falls into the net post. The net post is filled with active material, and the telescopic plate at the bottom of the discharge barrel is extended. Move the replacement device to a position away from the net post.

[0034] Step 305: Move the blockage clearing device to the bottom of the post. All fourth telescopic mechanisms drive all second curved branches to move toward the center of the third annular support until all second spray heads abut the outer periphery of the bottom end of the post. The third rotation mechanism drives the third annular support to rotate the second curved branches. Simultaneously, the blockage clearing device moves upward along the post. The second spray heads on the second curved branches spray bacterial solution into the interior of the post, and the bacterial solution penetrates into the active material. When the blockage clearing device reaches the top of the post, all fourth telescopic mechanisms drive all second curved branches to move away from the center of the third annular support. The blockage clearing device continues to move upward until it is above the post.

[0035] Step 306: open the plate unit located above the permeation unit, place the permeation assembly into the column using a plug-in device, and then close the plate unit.

[0036] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0037] The present invention provides a permeable reaction wall system with a clearing and blocking function and an operating method thereof. A plurality of permeation reaction groups are arranged in a box body, and each permeation reaction group is provided with a plurality of permeation units connected in sequence. The permeation component in each permeation unit can be separated from the column. When the purification performance of the permeation unit cannot meet the requirements, only the permeation component can be taken out through the plug-in device, and the blockages on the mesh column surface of the permeation component and between the active materials can be cleared through the clearing device, and then the permeation component can be placed in the column using the plug-in device. There is no need to carry out large-scale excavation to reinstall the reaction wall system, the construction operation is simple, there is no secondary pollution, the purification performance of the permeable reaction wall system can be efficiently guaranteed, the service life of the permeable reaction wall can be effectively extended, and the pollutants in groundwater can be removed in a long-lasting and efficient manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic structural diagram of a permeable reactive wall system according to an embodiment of the present invention;

[0039] Figure 2 yes Figure 1 Schematic diagram of the structure of the permeable reactive wall;

[0040] Figure 3 yes Figure 2 Schematic diagram of the structure of the center grid column;

[0041] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle cover;

[0042] Figure 5 yes Figure 1 Schematic diagram of the structure of the scraper assembly of the blockage clearing device.

[0043] In the figure: permeable reaction wall 1, blockage clearing device 2, box 11, water inlet area 12, permeation area 13, permeation unit 14, column 141, net column 142, active material 143, water outlet area 16, buffer layer 17, annular frame 21, first annular support 221, first arc-shaped support rod 222, first telescopic mechanism 223, spiral blade 224, plate frame 151, plate unit 152, water guide groove 154, water storage chamber 156, main frame 3, blockage remover storage tank 4, bacterial liquid storage tank 5, blower 6. DETAILED DESCRIPTION

[0044] The technical solution of the present invention is described in detail below.

[0045] The embodiment of the present invention provides a permeable reaction wall system with clearing and blocking functions, such as Figure 1 As shown, it includes a permeable reaction wall 1, a plug-in device and a clearing device 2, and the plug-in device and the clearing device 2 are installed above the permeable reaction wall 1. Figure 2As shown, the permeable reaction wall 1 includes a box body 11 with an opening at the top, in which a plurality of permeable reaction groups are arranged. Each permeable reaction group includes a plurality of permeation units 14 connected in sequence, and the permeation unit includes a column 141, in which a permeation assembly is arranged. The permeation assembly is detachably connected to the column 141, and the permeation assembly can be inserted into or pulled out of the column 141 under the action of external force. The permeation assembly includes a mesh column 142 with upper and lower openings, as shown in FIG. Figure 3 As shown, a retractable bottom plate is provided at the bottom opening of the net column 142. The net column 142 is filled with an active material 143. The active material 143 can be a bioactive composite material as disclosed in patent document CN202211344541.7, entitled "A Coupled Restoration Method for Emergency Disposal, Long-Term Reduction, and Intelligent Monitoring of Groundwater Pollution in Decommissioned Chemical Sites," or a bioactive composite material as disclosed in patent document CN202210049070.0, entitled "An Electric-Permeable Reaction Wall System Based on Bioactive Composite Materials, Its Preparation Method, and Application." The bottom plate covers the bottom end of the net column and supports the active material. When the bottom plate is opened, the active material can fall out of the bottom opening of the net column. The column barrel 141 is fixedly connected to the housing 11. The outer wall of the net column 142 is spaced apart from the inner wall of the column barrel 141, facilitating insertion and removal of the net column 142. Among them, the plug-in and pull-out device is used to pull out the permeation component from the column and insert the permeation component into the column. The blockage clearing device is used to clear the blockages on the surface of the net column 142 and between the active materials. The opening of the box body 11 is provided with an openable and closable cover. When the permeation reaction group in the box body is working, the cover plate covers the box body to protect the permeation reaction group and prevent debris from falling into the permeation reaction group and affecting the purification effect; when the permeation component is pulled out of the column and cleaned, the cover plate covers the box body to receive the blockage and prevent the blockage from falling into the column and affecting the insertion of the permeation component.

[0046] The permeable reaction wall system with a clearing and blocking function of the above-mentioned embodiment is achieved by arranging a number of permeation reaction groups in a housing, and each permeation reaction group is provided with a number of permeation units connected in sequence, and the permeation component in each permeation unit can be separated from the column. When the purification performance of the permeation unit cannot meet the requirements, the plug-in device can be used to remove only the permeation component, and the blockage on the mesh column surface of the permeation component and between the active materials can be cleared using the clearing device, and then the permeation component can be placed in the column using the plug-in device. There is no need to carry out large-scale excavation to reinstall the reaction wall system, the construction operation is simple, there is no secondary pollution, it can effectively guarantee the purification performance of the permeable reaction wall system, effectively extend the service life of the permeable reaction wall, and achieve long-lasting and efficient removal of pollutants in groundwater.

[0047] Preferably, Figure 2As shown, the box body 11 is provided with an inlet area 12, an infiltration area 13 and an outlet area 16 in sequence along the direction of groundwater flow, and several infiltration reaction groups are located in the infiltration area 13. The inlets of all infiltration reaction groups are connected to the inlet area, and the outlets are connected to the outlet area. The inlet area 12 and the outlet area 16 are both filled with quartz sand, preferably with a particle size of 3 to 4 mm. Groundwater passes through the inlet area 12, the infiltration reaction group and the outlet area 16 in sequence. A water inlet is provided on the side wall of the box body located on the water inlet side of the water inlet area 12, and a partition is provided on the water outlet side of the water inlet area 12. The partition is provided with a water outlet at the same height as the first infiltration unit in the infiltration reaction group in the direction of groundwater flow, and the water inlet and outlet are both covered with a filter. A water outlet is provided on the side wall of the box body at the outlet side of the water outlet area 16, and a partition is provided on the water inlet side of the water outlet area 16. A water inlet is provided on the partition at the same height as the last osmosis unit in the osmosis reaction group in the direction of groundwater flow, and the water inlet and the water outlet are both covered with filter screens.

[0048] Preferably, the column 141 and the net column 142 are both cylindrical. The infiltration unit uses a cylindrical column and net column. After the groundwater enters the infiltration unit, the resistance and guiding force it encounters are uniform, which is conducive to the uniform distribution of groundwater in the infiltration unit; because the permeability coefficient of the active material of the infiltration unit is higher than the permeability coefficient of the surrounding aquifer, and the groundwater flows slowly, the active material can fully contact the groundwater, allowing the active material to fully play its role and improve the purification effect. Moreover, after removing the infiltration component, when using a clearing device to clean the blockage on the surface of the net column, the cylindrical net column is more conducive to the clearing device to handle it, reducing resistance and friction, eliminating the dead corners that are difficult to reach, and improving the clearing effect.

[0049] Preferably, Figure 2 As shown, two adjacent permeation units 14 in the same permeation reaction group are connected through a buffer layer 17. The buffer layer 17 is filled with quartz sand, preferably with a particle size of 2 to 3 mm. A buffer layer is provided between adjacent permeation units to adjust the permeation performance. If the permeation performance between adjacent permeation units varies greatly due to different degrees of blockage, the buffer layer can help achieve a smoother transition, thereby protecting the permeation unit from damage or performance impact, and providing buffer time for clearing the blockage. Preferably, a buffer layer is provided between the first permeation unit in the permeation reaction group and the water inlet area, and a buffer layer is provided between the last permeation unit in the permeation reaction group and the water outlet area.

[0050] like Figure 1 As shown, the permeable reaction wall is arranged below the ground surface, and a main frame 3 is provided above the permeable reaction wall (ie above the ground surface), and the plugging device and the clearing device 2 are both installed on the main frame 3 .

[0051] The plug-in / extraction device is mounted on the main frame 3 via a first three-dimensional movable assembly, which drives the plug-in / extraction device to move three-dimensionally—up and down, forward and backward, and left and right. The plug-in / extraction device includes a hook that can hook onto the top of the infiltration component's net post. Driven by the first three-dimensional movable assembly, the plug-in / extraction device moves above the corresponding infiltration unit, hooks onto the top of the net post, and then moves upward to remove the infiltration component from the column. After clearing the blockage, the plug-in / extraction device drives the infiltration component downward and inserts it into the column.

[0052] As a preferred example, the blockage clearing device 2 comprises an annular frame 21, a scraper assembly, a blockage remover spray assembly, a vibrating assembly, and a bacterial solution spray assembly, all mounted on the annular frame 21. The annular frame 21 is attached to the main frame 3 via a second three-dimensional motion assembly, which drives the blockage clearing device in three-dimensional motion: up and down, forward and backward, and left and right. After the insertion and extraction device removes the infiltration assembly from the column, the blockage clearing device, driven by the second three-dimensional motion assembly, moves above the infiltration assembly and, during the blockage clearing process, moves up and down along the grid column.

[0053] Specifically, such as Figure 5 As shown, the scraper assembly includes a first annular support 221 and a plurality of first curved support rods 222. The first annular support 221 is concentrically mounted on the annular frame 21 via a first rotating mechanism. The plurality of first curved support rods 222 are circumferentially mounted on the first annular support 221 via first telescopic mechanisms 223. The first rotating mechanism drives the first annular support 221 to rotate about its center, while the first telescopic mechanism 223 drives the first curved support rods 222 to move toward or away from the center of the first annular support. Driven by the first telescopic mechanism 223, all first curved support rods 222 move inward to form a circular ring concentric with and within the first annular support. The diameter of this ring is slightly larger than the outer diameter of the net post. A spiral blade 224 is provided on the side of the first curved support rods 222 facing away from the first annular support 221. After all the first curved support rods 222 are joined to form a circular ring, the spiral blade 224 is in close contact with the outer surface of the net post.

[0054] When the scraper assembly is in operation, all first telescopic mechanisms drive the first curved support rods toward the center of the first annular support until they are joined to form a circular ring, with the spiral blades contacting the outer circumference of the net post. The first rotating mechanism drives the first annular support 221, which in turn rotates the first curved support rods 222. Simultaneously, the blockage clearing device moves up and down along the net post, with the spiral blades moving along the post to scrape away blockages from the post's surface. During rotation and up and down movement, the spiral blades gradually change their contact angle and force with the post's surface, helping to adapt to structural changes on the post's surface. This effectively scrapes away blockages from the post's outer wall and mesh, while also reducing direct impact and wear on the post. Simultaneously, the rotating and downwardly moving spiral blades form a spiral channel on the post's outer surface. Scraped blockages can be guided downward by the spiral blades, preventing blockages from the upper portion from adhering to the lower portion, thus improving the blockage clearing effect. When the scraper assembly is not working, all the first telescopic mechanisms drive the first arc-shaped support rods to move in a direction away from the center of the first annular bracket, and all the first arc-shaped support rods are retracted.

[0055] The declogging agent injection assembly includes a second annular support and a plurality of first arc-shaped branches. The second annular support is concentrically mounted on the annular frame via a second rotating mechanism, and the plurality of first arc-shaped branches are respectively mounted on the second annular support along the circumference of the second annular support via a second telescopic mechanism. The second rotating mechanism is used to drive the second annular support to rotate around its center, and the second telescopic mechanism is used to drive the first arc-shaped branches to move toward or away from the center of the second annular support. Driven by the second telescopic mechanism, the first arc-shaped branches can be spliced together to form a circular ring that is concentric with the second annular support and located within the second annular support. The diameter of the circular ring is slightly larger than the outer diameter of the net post. A plurality of first injection heads are provided on the side of the first arc-shaped branch away from the second annular support. After all the first arc-shaped branches are spliced together to form a circular ring, the first injection heads are in close contact with the outer surface of the net post.

[0056] When the unblocking agent injection assembly is in operation, all first curved branches are connected to the unblocking agent storage tank, and all second telescopic mechanisms drive the first curved branches to move toward the center of the second annular support until they are spliced to form a ring, and all first injection heads abut the outer circumference of the net column. The second rotating mechanism drives the second annular support to rotate the first curved branches. At the same time, the blockage removal device moves up and down along the net column, and the first injection head sprays the unblocking agent into the interior of the net column. The unblocking agent penetrates into the active material and dissolves the blockage between the active materials. During the rotation and up and down movement of the first injection head, the unblocking agent is sprayed into the interior of the net column. The spray range covers the entire outer surface of the net column, leaving no blind spots, allowing the unblocking agent to fully penetrate the active material and improve the dissolution effect. When the unblocking agent injection assembly is not in operation, all second telescopic mechanisms drive the first curved branches to move away from the center of the second annular support, and all first curved branches are retracted.

[0057] The vibration assembly includes a first annular support plate and several first curved support plates. The first annular support plate is mounted on the annular frame via a vibrating member. The several first curved support plates are mounted on the first annular support plate along its circumference via a third telescopic mechanism. The vibrating member drives the first annular support plate to vibrate, while the third telescopic mechanism drives the first curved support plates to move toward or away from the center of the first annular support plate. After all the first curved support plates are joined to form a cylinder, the cylinder is in close contact with the outer surface of the net post.

[0058] When the vibration assembly is operating, all third telescopic mechanisms drive the first curved support plates toward the center of the first annular support plate until they are joined to form a cylinder, with all first curved support plates abutting the outer periphery of the net post. The vibrating element drives the first annular support plate to vibrate the first curved support plate, which in turn drives the net post to vibrate, dislodging blockages between the net post surface and the active material. The blockage clearing device moves downward from the top of the net post, stops after moving a preset length, vibrates for a preset time, then moves downward again a preset length, stops, and vibrates for a preset time, repeating this process until the blockage clearing device reaches the bottom of the net post. When the vibration assembly is not operating, all third telescopic mechanisms drive the first curved support plates away from the center of the first annular support plate, retracting all first curved support plates.

[0059] The bacterial liquid injection assembly includes a third annular support and a plurality of second curved branches. The third annular support is concentrically mounted on the annular frame via a third rotating mechanism. The plurality of second curved branches are circumferentially mounted on the third annular support via a fourth telescopic mechanism. The third rotating mechanism is used to drive the third annular support to rotate about its center, and the fourth telescopic mechanism is used to drive the second curved branches to move toward or away from the center of the third annular support. Driven by the fourth telescopic mechanism, all the second curved branches can be joined to form a circular ring concentric with and within the third annular support. The diameter of this ring is slightly larger than the outer diameter of the net post. A plurality of second injection heads are provided on the side of the second curved branches away from the third annular support. After all the second curved branches are joined to form a circular ring, the second injection heads are in close contact with the outer surface of the net post.

[0060] When the bacterial liquid injection assembly is in operation, all second curved branches are connected to the bacterial liquid storage tank. The fourth telescopic mechanism drives the second curved branches toward the center of the third annular support until they form a circular ring. All second injection heads abut the outer periphery of the net column. The third rotation mechanism drives the third annular support, causing the second curved branches to rotate. Simultaneously, the blockage removal device moves up and down along the net column, and the second injection heads spray the bacterial liquid into the net column, where it penetrates the active material. During rotation and up and down movement, the second injection heads spray the bacterial liquid into the net column, covering the entire outer surface of the net column with no blind spots. This ensures that the bacterial liquid fully penetrates the active material, enhancing microbial degradation capacity. Optionally, the second curved branches can also be connected to a blower to introduce air into the active material, providing oxygen for aerobic microorganisms, or to dislodge contaminants within the active material, allowing them to fully interact with the active material and react, thereby enhancing the purification capacity of the infiltration assembly. When the bacterial liquid spraying assembly is not working, all the fourth telescopic mechanisms drive the second arc-shaped branch pipes to move away from the center of the third annular support, and retract all the second arc-shaped branch pipes.

[0061] As a preferred example, the permeable reaction wall system of this embodiment also includes a replacement device, which is used to replace the active material in the net column 142. The replacement device includes a replacement frame, an upper telescopic frame, a lower telescopic frame and a manipulator, and the upper telescopic frame, the lower telescopic frame and the manipulator are all installed on the replacement frame. The replacement frame is installed on the main frame 3 through a third three-dimensional moving component, and the third three-dimensional moving component drives the replacement device to move three-dimensionally up and down, front and back, and left and right. The lower telescopic frame is provided with a recycling bag with an opening at the top, and the recycling bag is used to collect old active materials. The upper telescopic frame is provided with a discharge barrel, and the discharge barrel is used to store new active materials. The bottom end of the discharge barrel is provided with a telescopic plate for opening and closing the opening at the bottom end of the discharge barrel. When the telescopic plate is retracted, the new active material falls into the net column. The manipulator is used to open and close the bottom plate at the bottom end of the net column. The manipulator adopts the existing structure.

[0062] When the replacement device is in operation, it is driven by the third, three-dimensional moving assembly to move near the corresponding active component. The lower telescopic frame extends, positioning the recovery bag directly below the net post. The robot opens the bottom plate at the bottom of the net post, allowing the active material inside to fall into the recovery bag. The robot closes the bottom plate at the bottom of the net post. The upper telescopic frame extends, positioning the discharge barrel directly above the net post. The telescopic plate at the bottom of the discharge barrel retracts, allowing new active material inside the discharge barrel to fall into the net post. This continues until the net post is filled with active material and the telescopic plate at the bottom of the discharge barrel is extended. When the replacement device is not in operation, it moves away from the net post.

[0063] As a preferred example, Figure 4As shown, the cover plate comprises a plate frame 151 and several plate units 152. One side of the plate units 152 is hinged to the plate frame 151, and the other side has a pull ring for easy opening and closing. A dirt collection pocket is provided on the upper surface of the plate units 152. The side where the plate units are hinged to the plate frame is provided with a water channel 154, and the remaining sides are provided with water blocking weirs. A water storage chamber 156 is provided at the junction of the plate frame and the plate units, communicating with the water channel 154.

[0064] Preferably, the number of plate units is the same as the number of permeation units, and the plate units are arranged in a one-to-one correspondence with the permeation units. A plate unit is arranged above each permeation unit, and the plate unit corresponding to the permeation unit to be processed can be opened independently as needed without having to open all the cover plates, which is simple to operate and protects other permeation units from being affected.

[0065] To remove the osmotic assembly, open the plate unit above it, remove the osmotic assembly, and then close the plate unit. During the clearing process, the blockage and waste liquid blockage remover fall into the collection bag of the lower plate unit. The blockage remains in the collection bag, while the waste liquid blockage remover flows through the water guide groove 154 into the water storage chamber 156 for recovery and recycling.

[0066] The present invention also provides a method for operating the permeable reaction wall system with clearing and blocking functions, comprising the following steps:

[0067] Step 10: Determine the osmosis unit to be cleared and the osmosis unit to be replaced.

[0068] Specifically, according to the groundwater flow rate at the inlet and outlet of the infiltration unit, the permeability coefficient of the infiltration unit is calculated using formula (1):

[0069] K = V ÷ [(h2 - h1) ÷ L] Formula (1)

[0070] Where V represents the average of the inlet and outlet flow rates of the permeation unit, K represents the permeation coefficient of the permeation unit, (h2-h1) represents the hydraulic head difference between the inlet and outlet of the permeation unit, and L represents the distance between the inlet and outlet of the permeation unit. If the permeation coefficient of a permeation unit is lower than the permeability coefficient of the aquifer medium in the surrounding site, the permeation unit is identified as a permeation unit to be cleared. If the permeability coefficient of all permeation units in the same permeation reaction group is not lower than the permeability coefficient of the aquifer medium in the surrounding site, and the pollutant concentration at the outlet of the permeation reaction group is higher than the risk control target value, all permeation units in the permeation reaction group are identified as permeation units to be replaced.

[0071] Step 20: Use the plug-in device and the clearing device to process all the infiltration units to be cleared one by one.

[0072] Step 30: All the infiltration units to be replaced are processed one by one using the plug-in device, the blockage clearing device and the replacement device.

[0073] The operating method of the permeable reaction wall system with a clearing and plugging function of this embodiment is to arrange several permeation reaction groups in a housing, each permeation reaction group being provided with several sequentially connected permeation units, and the permeation assembly in each permeation unit being separable from the column. By detecting the groundwater flow rate at the inlet and outlet of each permeation unit, the permeability coefficient of each permeation unit is obtained. If the permeability coefficient of a permeation unit is lower than the permeability coefficient of the aquifer medium in the surrounding site, only the permeation assembly of the permeation unit is removed using a plug-in device, and the blockage on the surface of the permeation assembly's column and between the active materials is cleared using a clearing and plugging device. Finally, the permeation assembly is placed into the column using the plug-in device. If the permeability coefficients of all permeation units in a permeation reaction group are not lower than the permeability coefficient of the aquifer medium in the surrounding site, but the pollutant concentration at the outlet of the permeation reaction group is higher than the risk control target value, only the permeation assembly of the permeation unit in the permeation reaction group is removed using a plug-in device, and the blockage on the surface of the permeation assembly's column is cleared using a clearing and plugging device. Then, the active material in the column is replaced using a replacement device. Finally, the permeation assembly is placed into the column using the plug-in device. There is no need for large-scale excavation to reinstall the reaction wall system. The construction operation is simple and there is no secondary pollution. It can effectively ensure the purification performance of the permeable reaction wall system, effectively extend the service life of the permeable reaction wall, and achieve long-term and efficient removal of pollutants in groundwater.

[0074] Preferably, in step 20, a single infiltration unit to be cleared is processed using an insertion and extraction device and a clearing device, specifically including:

[0075] Step 201, move the plug-in device and the clearing device to the top of the permeation unit, open the plate unit 152 located above the permeation unit, use the plug-in device to lift the permeation component of the permeation unit from the column, and then cover the plate unit 152.

[0076] In step 202, all first telescopic mechanisms drive all first curved support rods toward the center of the first annular support until they are joined to form a circular ring, and the spiral blades abut the outer periphery of the top of the net post. The first rotating mechanism drives the first annular support to rotate the first curved support rods. Simultaneously, the blockage clearing device moves downward along the net post, and the spiral blades contact the surface of the net post, scraping away any blockages. Any blockages on the net post surface fall into the dirt collection pocket of the lower plate unit. When the blockage clearing device reaches the bottom of the net post, all first telescopic mechanisms drive all first curved support rods toward the center of the first annular support.

[0077] In step 203, the blockage clearing device moves upward along the post until it reaches the top of the post. All third telescopic mechanisms drive all first curved support plates toward the center of the first annular support plate until the first curved support plate abuts the outer periphery of the top of the post. All vibrating members drive the first annular support plate to vibrate, causing the first curved support plate, which in turn vibrates the post. Simultaneously, the blockage clearing device moves downward along the post in sections (i.e., the blockage clearing device moves downward from the top of the post, stops after a preset distance, then moves downward again after a preset time period, stops again, and so on, until it reaches the bottom of the post). Vibration dislodges blockages from the post surface and ultimately falls into the dirt collection pocket of the plate unit below. This also allows the congested gas trapped between the active materials to be expelled. When the blockage clearing device reaches the bottom of the post, the vibrating members are deactivated. All third telescopic mechanisms drive all first curved support plates away from the center of the first annular support plate.

[0078] In step 204, all second telescopic mechanisms drive all first curved branches toward the center of the second annular support until they are joined to form a circular ring, with all first spray heads contacting the outer periphery of the bottom end of the post. The second rotation mechanism drives the second annular support to rotate the first curved branches. Simultaneously, the blockage clearing device moves upward along the post. The first spray heads on the first curved branches spray a blockage remover into the post. The blockage remover penetrates the active material, dissolving blockages between the active materials. Waste liquid blockage remover falls into the sump of the lower plate unit and flows through the water guide trough 154 into the water storage chamber 156. When the blockage clearing device reaches the top of the post, all second telescopic mechanisms drive all first curved branches away from the center of the second annular support.

[0079] In step 205, all third telescopic mechanisms drive all first curved support plates toward the center of the first annular support plate until the first curved support plates contact the outer periphery of the top of the net post. All vibrators drive the first annular support plate, causing the first curved support plate to vibrate, which in turn causes the net post to vibrate. Simultaneously, the blockage clearing device moves along the net post in sections from top to bottom (i.e., the blockage clearing device moves downward from the top of the net post, stops after moving a preset length, then moves downward again after a preset time period, stops again, and so on, until it reaches the bottom of the net post). Under the action of vibration, blockages between the active materials fall off and eventually fall into the dirt collection pocket of the plate unit below, further discharging blocked gas between the active materials. When the blockage clearing device reaches the bottom of the net post, the vibrators are turned off. All third telescopic mechanisms drive all first curved support plates toward the center away from the first annular support plate.

[0080] In step 206, all fourth telescopic mechanisms drive all second curved branches toward the center of the third annular support until they form a circular ring, with the second spray heads contacting the outer periphery of the bottom end of the post. The third rotation mechanism drives the third annular support, causing the second curved branches to rotate. Simultaneously, the clearing device moves upward along the post, with the second spray heads on the second curved branches spraying bacterial solution into the post, where it infiltrates the active material. When the clearing device reaches the top of the post, all fourth telescopic mechanisms drive all second curved branches away from the center of the third annular support. The clearing device continues its upward movement until it reaches above the post.

[0081] Step 207 , open the plate unit 152 located above the permeation unit, place the permeation assembly into the column using a plug-in device, and then close the plate unit 152 .

[0082] Preferably, if the active material in the net column needs to be removed from the contaminants under aerobic conditions, in step 206, after the second spray head abuts the outer periphery of the bottom end of the net column, the second curved branch pipe is first connected to the blower. The third rotating mechanism drives the third annular bracket to rotate the second curved branch pipe. Simultaneously, the blockage removal device moves upward along the net column. The second spray head on the second curved branch pipe sprays air at a certain pressure into the net column, which expels the gases generated by the microorganisms between the active materials. This also creates dense microbubbles, which move contaminants remaining between the active materials, allowing them to fully contact and react with the active materials, thereby removing the contaminants between the active materials. Furthermore, air fills the spaces between the active materials, providing oxygen for the aerobic microorganisms. When the blockage removal device reaches the top of the net column, the third rotating mechanism stops. The second curved branch pipe is connected to the bacterial solution storage tank. The third rotating mechanism drives the third annular bracket to rotate the second curved branch pipe. Simultaneously, the blockage removal device moves downward along the net column. The second spray head sprays bacterial solution into the net column, which infiltrates the active materials.

[0083] Preferably, in step 30, a single infiltration unit to be replaced is processed using a plugging and unplugging device, a blocking removal device, and a replacement device, specifically including:

[0084] Step 301, move the plug-in device and the clearing device to the top of the permeation unit, open the plate unit 152 located above the permeation unit, use the plug-in device to lift the permeation component of the permeation unit from the column, and then cover the plate unit 152.

[0085] In step 302, all first telescopic mechanisms drive all first curved support rods toward the center of the first annular support until they are joined to form a circular ring, with the spiral blades contacting the outer periphery of the top of the net post. The first rotation mechanism drives the first annular support, causing the first curved support rods to rotate. Simultaneously, the blockage removal device moves downward along the net post, with the spiral blades contacting the surface of the net post, scraping away any obstructions, which fall into the dirt collection pocket of the plate unit below. When the blockage removal device reaches the bottom of the net post, all first telescopic mechanisms drive all first curved support rods away from the center of the first annular support.

[0086] In step 303, the blockage clearing device moves upward along the net post until it reaches the top of the post. All third telescopic mechanisms drive all first curved support plates toward the center of the first annular support plate until the first curved support plates abut the outer periphery of the top of the post. All vibrating members drive the first annular support plate to vibrate, which in turn causes the net post to vibrate. Simultaneously, the blockage clearing device moves downward along the net post in sections (i.e., the blockage clearing device moves downward from the top of the post, stops after a preset distance, then moves downward again after a preset time period, stops again, and so on, until it reaches the bottom of the post). Due to the vibration, blockages on the surface of the post fall off and eventually fall into the dirt collection pocket of the plate unit below. When the blockage clearing device reaches the bottom of the post, the vibrating members are deactivated. All third telescopic mechanisms drive all first curved support plates away from the center of the first annular support plate. The blockage clearing device is moved to a position away from the post.

[0087] Step 304: Move the replacement device near the net post. Extend the lower telescopic frame so that the recovery bag is directly below the net post. Use a robotic arm to open the bottom plate at the bottom of the net post, allowing the active material inside the net post to fall into the recovery bag on the lower telescopic frame. Use a robotic arm to close the bottom plate at the bottom of the net post. Extend the upper telescopic frame so that the discharge barrel containing new active material is directly above the net post. Retract the telescopic plate at the bottom of the discharge barrel, allowing the new active material inside the discharge barrel to fall into the net post. This process continues until the net post is completely filled with active material and the telescopic plate at the bottom of the discharge barrel is extended. Move the replacement device away from the net post.

[0088] Step 305: Move the clearing device to the bottom of the post. All fourth telescopic mechanisms drive all second curved branches toward the center of the third annular support until they form a circular ring. All second spray heads abut the outer periphery of the bottom end of the post. The third rotation mechanism drives the third annular support, causing the second curved branches to rotate. Simultaneously, the clearing device moves upward along the post. The second spray heads on the second curved branches spray bacterial solution into the interior of the post, where it infiltrates the active material. When the clearing device reaches the top of the post, all fourth telescopic mechanisms drive all second curved branches away from the center of the third annular support. The clearing device continues to move upward until it is positioned above the post.

[0089] Step 306 , open the plate unit 152 located above the permeation unit, place the permeation assembly into the column using a plug-in device, and then close the plate unit 152 .

[0090] Preferably, if the removal of contaminants from the active materials in the net column requires aerobic conditions, in step 305, after the second spray head contacts the outer periphery of the bottom end of the net column, the second curved branch pipe is first connected to the blower. The third rotating mechanism drives the third annular bracket to rotate the second curved branch pipe. Simultaneously, the blockage clearing device moves upward along the net column. The second spray head on the second curved branch pipe sprays air at a certain pressure into the interior of the net column. The air fills between the active materials and provides oxygen for aerobic microorganisms. When the blockage clearing device moves to the top of the net column, the third rotating mechanism stops. The second curved branch pipe is connected to the bacterial liquid storage tank. The third rotating mechanism drives the third annular bracket to rotate the second curved branch pipe. Simultaneously, the blockage clearing device moves downward along the net column. The second spray head sprays bacterial liquid into the interior of the net column, and the bacterial liquid penetrates into the active materials.

[0091] The operating method of the permeable reaction wall system with a blockage clearing function of this embodiment is as follows: when treating the permeation unit to be cleared, the scraper assembly of the blockage clearing device is first used to scrape off the blockage on the surface of the net column, and then the vibration assembly is used to drive the net column to vibrate, so that the blockage that has been treated by the scraper and has reduced adhesion to the net column surface but has not been scraped off is separated from the net column surface; then the blockage remover injection assembly is used to inject a blockage remover into the net column to dissolve the blockage between the active materials, and then the vibration assembly is used to drive the net column to vibrate, so that the dissolved blockage falls off. Finally, if the active materials in the net column need to remove pollutants under aerobic conditions, the bacterial liquid injection assembly is used to first inject air into the net column and then inject bacterial liquid; if the active materials in the net column need to remove pollutants under anaerobic conditions, the bacterial liquid injection assembly is used to first inject bacterial liquid into the net column, so that microorganisms can grow and reproduce rapidly between the active materials, thereby increasing reaction activity and improving the purification effect of the permeation unit. When processing the osmosis unit to be replaced, first use the scraper assembly of the clearing device to scrape off the blockage on the surface of the net column, then use the replacement device to replace the active material in the net column, and then, according to needs, if the removal of pollutants by the active material in the net column needs to be carried out under aerobic conditions, use the bacterial liquid injection assembly to first inject air into the net column and then inject bacterial liquid; if the removal of pollutants by the active material in the net column needs to be carried out under anaerobic conditions, use the bacterial liquid injection assembly to first inject bacterial liquid into the net column, so that microorganisms can grow and reproduce rapidly between the active materials, thereby increasing reaction activity and improving the purification effect of the osmosis unit.

[0092] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the specific embodiments described above. The specific embodiments and descriptions in the specification are only intended to further illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.

Claims

1. A permeable reaction wall system with clearing and blocking function, characterized in that: The invention comprises a permeable reaction wall (1), a plug-in device and a blockage clearing device (2), wherein the plug-in device and the blockage clearing device (2) are installed above the permeable reaction wall (1); the permeable reaction wall (1) comprises a box body (11) with an opening at the top, wherein a plurality of permeation reaction groups are arranged in the box body; each permeation reaction group comprises a plurality of permeation units (14) connected in sequence, wherein the permeation unit comprises a column (141), wherein a permeation assembly is arranged in the column (141); the permeation assembly comprises a net column (142) with openings at the top and bottom, wherein the net column (142) has a bottom An openable bottom plate is provided at the end opening, and the net column (142) is filled with active material (143); the column barrel (141) is fixedly connected to the box body (11), and the outer wall of the net column (142) is clearance-matched with the inner wall of the column barrel (141); an openable and closable cover plate is provided at the opening of the box body (11); the plugging and pulling device is used to pull out the permeation component from the column barrel (141) and insert the permeation component into the column barrel (141); the blocking device (2) is used to clear blockages between the surface of the net column (142) and the active material (143); The blockage clearing device comprises an annular frame (21), a scraper assembly, a blockage remover injection assembly, a vibration assembly, and a bacterial liquid injection assembly, wherein the scraper assembly, blockage remover injection assembly, vibration assembly, and bacterial liquid injection assembly are all mounted on the annular frame (21); The scraper assembly comprises a first annular support (221) and a plurality of first arc-shaped support rods (222); the first annular support (221) is concentrically mounted on the annular frame (21) via a first rotating mechanism, and the first arc-shaped support rods (222) are mounted on the first annular support (221) via a first telescopic mechanism (223); the first rotating mechanism is used to drive the first annular support (221) to rotate, and the first telescopic mechanism (223) is used to drive the first arc-shaped support rods (222) to move toward or away from the center of the first annular support (221); all the first arc-shaped support rods (222) can be spliced together to form a circular ring concentric with the first annular support (221) and located inside the first annular support (221) under the drive of the first telescopic mechanism (223); a spiral blade (224) is provided on the side of the first arc-shaped support rod (222) away from the first annular support (221); The blocking agent injection assembly comprises a second annular support and a plurality of first arc-shaped branch pipes, the second annular support is concentrically mounted on the annular frame (21) via a second rotating mechanism, and the first arc-shaped branch pipes are mounted on the second annular support via a second telescopic mechanism; the second rotating mechanism is used to drive the second annular support to rotate, and the second telescopic mechanism is used to drive the first arc-shaped branch pipes to move toward or away from the center of the second annular support; all the first arc-shaped branch pipes can be spliced together to form a circular ring concentric with the second annular support and located inside the second annular support under the drive of the second telescopic mechanism; a plurality of first injection heads are provided on the side of the first arc-shaped branch pipe away from the second annular support; The vibration assembly includes a first annular support plate and a plurality of first arc-shaped support plates, the first annular support plate is mounted on the annular frame (21) via a vibration member, and the first arc-shaped support plate is mounted on the first annular support plate via a third telescopic mechanism; the vibration member is used to drive the first annular support plate to vibrate, and the third telescopic mechanism is used to drive the first arc-shaped support plate to move toward or away from the center of the first annular support plate; The bacterial liquid injection assembly includes a third annular bracket and a plurality of second arc-shaped branches. The third annular bracket is concentrically mounted on the annular frame via a third rotating mechanism, and the second arc-shaped branches are mounted on the third annular bracket via a fourth telescopic mechanism. The third rotating mechanism is used to drive the third annular bracket to rotate, and the fourth telescopic mechanism is used to drive the second arc-shaped branches to move toward or away from the center of the third annular bracket. All the second arc-shaped branches can be spliced together to form a circular ring concentric with the third annular bracket and located within the third annular bracket under the drive of the fourth telescopic mechanism. A plurality of second injection heads are provided on the side of the second arc-shaped branches away from the third annular bracket.

2. The permeable reactive wall system according to claim 1, characterized in that: The invention also includes a replacement device, which is used to replace the active material in the net column (142); the replacement device includes a replacement frame, an upper telescopic frame, a lower telescopic frame and a manipulator, and the upper telescopic frame, the lower telescopic frame and the manipulator are all installed on the replacement frame; the lower telescopic frame is provided with a recycling bag with a top opening; the upper telescopic frame is provided with a discharge barrel, and the bottom end of the discharge barrel is provided with a telescopic plate for opening and closing the bottom end opening of the discharge barrel; the manipulator is used to open and close the bottom plate at the bottom end of the net column.

3. The permeable reactive wall system according to claim 1, characterized in that: The cover plate comprises a plate frame (151) and a plurality of plate units (152), wherein the plate units (152) are hinged to the plate frame (151); a dirt collecting pocket is provided on the upper surface of the plate unit (152); a water guide groove (154) is provided on the side where the plate unit and the plate frame are hinged, and a water blocking weir is provided on the other sides; a water storage cavity (156) is provided at the connection between the plate frame and the plate unit, and the water storage cavity (156) is communicated with the water guide groove (154).

4. The permeable reactive wall system according to claim 3, characterized in that: The number of the plate units (152) is consistent with the number of the permeation units (14), and the plate units and the permeation units are arranged in a one-to-one correspondence.

5. The permeable reactive wall system according to claim 1, characterized in that: The box body is provided with an inlet area (12), an infiltration area (13) and an outlet area (16) arranged in sequence along the groundwater flow direction, and a plurality of infiltration reaction groups are located in the infiltration area (13); both ends of the infiltration reaction group are connected to the inlet area and the outlet area respectively; and the inlet area (12) and the outlet area (16) are both filled with quartz sand.

6. The permeable reactive wall system according to claim 1, characterized in that: The column barrel (141) and the net column (142) are both cylindrical, and two adjacent permeation units (14) are connected via a buffer layer (17).

7. A method for operating the permeable reactive wall system according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 10, determining the osmosis unit to be cleared and the osmosis unit to be replaced; Specifically, the permeability coefficient of the permeability unit is calculated based on the groundwater flow rate at the inlet and outlet of the permeability unit; if the permeability coefficient of the permeability unit is lower than the permeability coefficient of the aquifer medium in the surrounding site, the permeability unit is determined to be the permeability unit to be cleared; if the permeability coefficients of all permeability units in the same permeability reaction group are not lower than the permeability coefficient of the aquifer medium in the surrounding site, and the pollutant concentration at the outlet of the permeability reaction group is higher than the risk control target value, then all permeability units in the permeability reaction group are determined to be the permeation units to be replaced; Step 20, using the plug-in device and the clearing device to process all the infiltration units to be cleared one by one; Step 30: All the infiltration units to be replaced are processed one by one using the plug-in device, the blockage clearing device and the replacement device.

8. The operating method according to claim 7, characterized in that: In step 20, a single infiltration unit to be cleared is processed using an insertion and extraction device and a clearing device, specifically including: Step 201, move the plug-in device and the clearing device to the top of the permeation unit, open the plate unit (152) located above the permeation unit, use the plug-in device to lift the permeation assembly of the permeation unit from the column, and then cover the plate unit (152); Step 202: All first telescopic mechanisms of the blockage clearing device drive the first arcuate support rods to move toward the center of the first annular support until the spiral blades abut the outer periphery of the top of the net post. The first rotation mechanism drives the first annular support to rotate the first arcuate support rods. Simultaneously, the blockage clearing device moves downward along the net post, and the spiral blades contact the surface of the net post to scrape away the blockage on the net post. When the blockage clearing device reaches the bottom of the net post, all first telescopic mechanisms drive all first arcuate support rods to move away from the center of the first annular support. Step 203: The blockage clearing device moves upward along the net post until it reaches the top of the net post; all third telescopic mechanisms drive all first arcuate support plates to move toward the center of the first annular support plate until all first arcuate support plates abut against the outer periphery of the top of the net post; all vibrating members drive the first annular support plate to vibrate the first arcuate support plate, and then the net post vibrates, while the blockage clearing device moves downward along the net post; under the action of vibration, the blockage on the surface of the net post falls off and eventually falls into the dirt collecting pocket of the plate unit below; when the blockage clearing device reaches the bottom of the net post, the vibrating member is turned off, and all third telescopic mechanisms drive all first arcuate support plates to move away from the center of the first annular support plate; In step 204, all second telescopic mechanisms drive all first arc-shaped branches to move toward the center of the second annular support until all first spray heads abut the outer periphery of the bottom end of the net post. The second rotation mechanism drives the second annular support to rotate the first arc-shaped branches. Simultaneously, the blockage clearing device moves upward along the net post. The first spray heads on the first arc-shaped branches spray a blockage remover into the net post. The blockage remover penetrates into the active material and dissolves blockages between the active materials. When the blockage clearing device reaches the top of the net post, all second telescopic mechanisms drive all first arc-shaped branches to move away from the center of the second annular support. Step 205: all third telescopic mechanisms drive all first arc-shaped support plates to move toward the center of the first annular support plate until all first arc-shaped support plates abut against the outer periphery of the top of the net column; all vibrating members drive the first annular support plate to vibrate the first arc-shaped support plate, and then the net column vibrates, and at the same time, the blockage clearing device moves from top to bottom along the net column; under the action of vibration, the blockage between the active materials falls off and eventually falls into the dirt collecting bag of the lower plate unit; the waste liquid of the blockage clearing agent flows into the water storage chamber (156) through the water guide groove (154); when the blockage clearing device moves to the bottom end of the net column, the vibrating member is turned off; all third telescopic mechanisms drive all first arc-shaped support plates to move away from the center of the first annular support plate; Step 206: All fourth telescopic mechanisms drive all second curved branches toward the center of the third annular support until all second spray heads abut the outer periphery of the bottom end of the net post. The third rotation mechanism drives the third annular support to rotate the second curved branches. Simultaneously, the blockage clearing device moves upward along the net post. The second spray heads on the second curved branches spray bacterial solution into the interior of the net post, and the bacterial solution penetrates into the active material. When the blockage clearing device reaches the top of the net post, all fourth telescopic mechanisms drive all second curved branches away from the center of the third annular support. The blockage clearing device continues to move upward until it is above the net post. Step 207, open the plate unit (152) located above the permeation unit, place the permeation assembly into the column using the plug-in device, and then cover the plate unit (152).

9. The operating method according to claim 7, characterized in that: In step 30, a single permeation unit to be replaced is processed using a plugging and unplugging device, a blocking removal device, and a replacement device, specifically including: Step 301, move the plug-in device and the blockage clearing device to the top of the permeation unit, open the plate unit (152) located above the permeation unit, use the plug-in device to lift the permeation assembly of the permeation unit from the column, and then cover the plate unit (152); Step 302: All first telescopic mechanisms of the blockage clearing device drive all first arcuate support rods to move toward the center of the first annular support until the spiral blades abut the outer periphery of the top of the net post. The first rotating mechanism drives the first annular support to rotate the first arcuate support rods. Simultaneously, the blockage clearing device moves downward along the net post. The spiral blades contact the surface of the net post, scraping away blockages on the surface of the net post. The blockages on the surface of the net post fall into the dirt collection pocket of the lower plate unit. When the blockage clearing device reaches the bottom of the net post, all first telescopic mechanisms drive all first arcuate support rods to move away from the center of the first annular support. Step 303: The blockage clearing device moves upward along the net post until it reaches the top of the net post; all third telescopic mechanisms drive all first arcuate support plates to move toward the center of the first annular support plate until the first arcuate support plate abuts the outer periphery of the top of the net post; all vibrating members drive the first annular support plate to vibrate the first arcuate support plate, and then the net post vibrates, while the blockage clearing device moves downward along the net post; under the action of vibration, the blockage on the surface of the net post falls off and eventually falls into the dirt collecting pocket of the plate unit below; when the blockage clearing device reaches the bottom of the net post, the vibrating member is turned off; all third telescopic mechanisms drive all first arcuate support plates to move away from the center of the first annular support plate; the blockage clearing device moves to a position away from the net post; Step 304: Move the replacement device to the vicinity of the net post, extend the lower telescopic frame so that the recovery bag is directly below the net post, and use a robot to open the bottom plate at the bottom of the net post, allowing the active material in the net post to fall into the recovery bag. Then, use the robot to close the bottom plate at the bottom of the net post. Extend the upper telescopic frame so that the discharge barrel is directly above the net post, retract the telescopic plate at the bottom of the discharge barrel, and new active material in the discharge barrel falls into the net post. The net post is filled with active material, and the telescopic plate at the bottom of the discharge barrel is extended. Move the replacement device to a position away from the net post. Step 305: Move the blockage clearing device to the bottom of the post. All fourth telescopic mechanisms drive all second curved branches to move toward the center of the third annular support until all second spray heads abut the outer periphery of the bottom end of the post. The third rotation mechanism drives the third annular support to rotate the second curved branches. Simultaneously, the blockage clearing device moves upward along the post. The second spray heads on the second curved branches spray bacterial solution into the interior of the post, and the bacterial solution penetrates into the active material. When the blockage clearing device reaches the top of the post, all fourth telescopic mechanisms drive all second curved branches to move away from the center of the third annular support. The blockage clearing device continues to move upward until it is above the post. Step 306, open the plate unit (152) located above the permeation unit, place the permeation assembly into the column using the plug-in device, and then cover the plate unit (152).

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