Permeable reactive barrier system with unblocking function and operation method of permeable reactive barrier system

Abstract

The invention provides a permeable reactive barrier system with a blockage clearing function and an operation method of the permeable reactive barrier system. The permeable reactive barrier system comprises a permeable reactive barrier body, a plugging device and a blockage clearing device. The permeable reaction wall body comprises a box body, and a plurality of permeable reaction groups are arranged in the box body; the permeation reaction group comprises a plurality of permeation units which are sequentially communicated, each permeation unit comprises a column casing, and a permeation assembly is arranged in each column casing; the permeation assembly comprises a net column, an opening in the bottom end of the net column is provided with a bottom plate capable of being opened and closed, and the net column is filled with an active material; the column casing is fixedly connected with the box body; the outer wall of the net column is in clearance fit with the inner wall of the column casing; a cover plate capable of being opened and closed is arranged at the opening of the box body; the inserting and pulling device is used for pulling the permeation assembly out of the column casing and inserting the permeation assembly into the column casing; the blockage clearing device is used for clearing blockage on the surface and inside the net post. According to the permeable reactive barrier system with the unblocking function and the operation method of the permeable reactive barrier system, the purification performance of the permeable reactive barrier system can be efficiently guaranteed, and construction operation is easy and convenient.

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 the permeable reaction wall, the blockage of the filling material will greatly affect its hydraulic performance, resulting in a reduction in the treatment effect and life 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 excavation methods are 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 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, but there are usually practical problems such as insufficient supply of nutrients or lack of degradation bacteria in the permeable reaction wall, which inhibits the biodegradation performance in the permeable reaction wall and restricts the promotion and use of the 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: 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, wherein a plurality of permeation reaction groups are arranged in the box; each permeation reaction group comprises a plurality of permeation units connected in sequence, wherein the permeation unit comprises a column, wherein a permeation assembly is arranged in the column; the permeation assembly comprises a net column with openings at the top and the bottom, wherein an openable and closable bottom plate is arranged at the opening at the bottom end of the net column, and the net column is filled with active materials; the column is fixedly connected to the box, and the outer wall of the net column is gap-matched with the inner wall of the column; an openable and closable cover is arranged 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 the blockages on the surface of the net column and between the active materials.

[0005] As a further improvement of the present invention, the blockage clearing device comprises an annular frame, a scraper assembly, a blockage remover injection assembly, a vibration assembly and a bacterial liquid injection assembly, and the scraper assembly, the blockage remover injection assembly, the vibration assembly and the bacterial liquid injection assembly are all mounted on the annular frame; The scraper assembly comprises a first annular bracket and a plurality of first arc-shaped support rods, the first annular bracket is concentrically mounted on the annular frame through a first rotating mechanism, and the first arc-shaped support rod is mounted on the first annular bracket through 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 rod to move toward or away from the center of the first annular bracket; all the first arc-shaped support rods can be spliced ​​to form a circular ring concentric with the first annular bracket and located inside 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; The blocking agent injection assembly comprises a second annular support and a plurality of first arc-shaped branch pipes, wherein 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 ​​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 through a vibration member, and the first arc-shaped support plate is mounted on the first annular support plate through 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 branch pipes. The third annular bracket is concentrically mounted on the annular frame through a third rotating mechanism, and the second arc-shaped branch pipes are mounted on the third annular bracket through 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 branch pipes to move toward or away from the center of the third annular bracket. All the second arc-shaped branch pipes can be spliced ​​to form a circular ring concentric with the third annular bracket and located inside 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 branch pipe away from the third annular bracket.

[0006] 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.

[0007] As a further improvement of the present invention, the cover plate includes a plate frame and a plurality of plate body units, and the plate body units are hinged to the plate frame; a dirt collecting bag is provided on the upper surface of the plate body unit; a water guide groove is provided on the side where the plate body 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 body unit, and the water storage cavity is communicated with the water guide groove.

[0008] 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.

[0009] As a further improvement of the present invention, a water inlet area, a permeation area and a water outlet area are arranged in sequence in the box along the direction of groundwater flow, and several permeation reaction groups are located in the permeation area; the two ends of the permeation reaction group are respectively connected to the water inlet area and the water outlet area; the water inlet area and the water outlet area are both filled with quartz sand.

[0010] 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.

[0011] In a second aspect, the present invention further provides a method for operating the permeable reaction wall system provided in the first aspect, comprising the following steps: Step 10, determining the permeation unit to be cleared and the permeation 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 as 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 outlet pollutant concentration of the permeability reaction group is higher than the risk control target value, all permeability units in the permeability reaction group are determined as permeability 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, using the plug-in device, the blockage clearing device and the replacement device to process all the infiltration units to be replaced one by one.

[0012] As a further improvement of the present invention, in step 20, a single infiltration unit to be cleared is processed using a plugging and unplugging 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 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 cover the plate unit; Step 202: All first telescopic mechanisms of the clearing device drive all first arc-shaped support rods to move toward the center of the first annular support until the spiral blade abuts against the outer periphery of the top of the net post; the first rotating mechanism drives the first annular support to drive the first arc-shaped support rods to rotate, and at the same time, the clearing device moves from top to bottom along the net post, and the spiral blade contacts the surface of the net post to scrape off the blockage on the surface of the net post; when the clearing device moves to the bottom of the net post, all first telescopic mechanisms drive all first arc-shaped support rods to move away from the center of the first annular support; Step 203, the blockage clearing device moves from bottom to top along the net post until it moves to the top of the net post; all the third telescopic mechanisms drive all the first arc-shaped support plates to move toward the center of the circle close to the first annular support plate until all the first arc-shaped support plates abut against the outer periphery of the top of the net post; all the vibrating members drive the first annular support plate to drive the first arc-shaped support plate to vibrate, and then the net post vibrates, and at the same time, the blockage clearing device moves from top to bottom 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 bag of the plate unit below; when the blockage clearing device moves to the bottom of the net post, the vibrating member is turned off, and all the third telescopic mechanisms drive all the first arc-shaped support plates to move away from the center of the circle of the first annular support plate; Step 204: all the second telescopic mechanisms drive all the first arc-shaped branch pipes to move toward the center of the second annular support until all the first injection heads abut against the outer periphery of the bottom end of the net column; the second rotating mechanism drives the second annular support to drive the first arc-shaped branch pipes to rotate, and at the same time, the clearing device moves from bottom to top along the net column, and the first injection heads on the first arc-shaped branch pipes spray the unblocking agent into the inside of the net column, and the unblocking agent penetrates into the active material to dissolve the blockages between the active materials; when the clearing device moves to the top of the net column, all the second telescopic mechanisms drive all the first arc-shaped branch pipes to move away from the center of the second annular support; Step 205, all the third telescopic mechanisms drive all the first arc-shaped support plates to move toward the center of the first annular support plate until all the first arc-shaped support plates abut against the outer periphery of the top of the net column; all the vibrators drive the first annular support plate to drive the first arc-shaped support plate to vibrate, 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 blockages between the active materials fall off and eventually fall into the dirt collecting bag 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 column, the vibrators are turned off; all the third telescopic mechanisms drive all the first arc-shaped support plates to move away from the center of the first annular support plate; Step 206: All the fourth telescopic mechanisms drive all the second arc-shaped branch pipes to move toward the center of the third annular support until all the second spray heads abut against the outer periphery of the bottom end of the net column; the third rotating mechanism drives the third annular support to drive the second arc-shaped branch pipes to rotate, and at the same time, the clearing device moves upward along the net column, and the second spray heads on the second arc-shaped branch pipes spray bacterial liquid into the inside of the net column, and the bacterial liquid penetrates into the active material; when the clearing device moves to the top of the net column, all the fourth telescopic mechanisms drive all the second arc-shaped branch pipes to move away from the center of the third annular support; the clearing device continues to move upward until it is located above the net column; Step 207, open the plate unit located above the permeation unit, put the permeation assembly into the column using the plug-in device, and then cover the plate unit.

[0013] As a further improvement of the present invention, 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 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 cover the plate unit; Step 302: all first telescopic mechanisms of the blockage clearing device drive all first arc-shaped support rods to move toward the center of the first annular support until the spiral blade abuts against the outer periphery of the top of the net post; the first rotating mechanism drives the first annular support to drive the first arc-shaped support rods to rotate, and at the same time, the blockage clearing device moves from top to bottom along the net post, and the spiral blade contacts the surface of the net post to scrape off the blockage on the surface of the net post, and the blockage on the surface of the net post falls into the dirt collecting bag of the lower plate unit; when the blockage clearing device moves to the bottom of the net post, all first telescopic mechanisms drive all first arc-shaped support rods to move away from the center of the first annular support; Step 303, the blockage clearing device moves from bottom to top along the net post until it moves to the top of the net post; all the third telescopic mechanisms drive all the first arc-shaped support plates to move toward the center of the first annular support plate until the first arc-shaped support plate abuts against the outer periphery of the top of the net post; all the vibrators drive the first annular support plate to drive the first arc-shaped support plate to vibrate, and then the net post vibrates, and at the same time, the blockage clearing device moves from top to bottom 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 bag of the plate unit below; when the blockage clearing device moves to the bottom of the net post, the vibrators are turned off; all the third telescopic mechanisms drive all the first arc-shaped 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 column, extend the lower telescopic frame so that the recovery bag is located directly below the net column, use the robot to open the bottom plate at the bottom of the net column, and the active material in the net column falls into the recovery bag; then use the robot to cover the bottom plate at the bottom of the net column; extend the upper telescopic frame so that the discharge barrel is located directly above the net column, retract the telescopic plate at the bottom of the discharge barrel, and the new active material in the discharge barrel falls into the net column, until the net column is filled with active materials and the telescopic plate at the bottom of the discharge barrel is extended; move the replacement device to a position away from the net column; Step 305, move the clearing device to the bottom of the net column, all the fourth telescopic mechanisms drive all the second arc-shaped branches to move toward the center of the third annular support until all the second spray heads abut against the outer periphery of the bottom end of the net column; the third rotating mechanism drives the third annular support to drive the second arc-shaped branches to rotate, and at the same time, the clearing device moves from bottom to top along the net column, and the second spray heads on the second arc-shaped branches spray bacterial liquid into the inside of the net column, and the bacterial liquid penetrates into the active material; when the clearing device moves to the top of the net column, all the fourth telescopic mechanisms drive all the second arc-shaped branches to move away from the center of the third annular support; the clearing device continues to move upward until it is located above the net column; Step 306, open the plate unit located above the infiltration unit, put the infiltration assembly into the column using the plug-in device, and then cover the plate unit.

[0014] Compared with the prior art, the technical solution of the present invention has the following beneficial effects: The permeable reaction wall system with clearing and plugging functions provided by the present invention and its operation method are as follows: a plurality of permeation reaction groups are arranged in a casing, each permeation reaction group is provided with a plurality 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, only the permeation component can be taken out through the plug-in device, and the blockages on the net column surface of the permeation component and between the active materials can be cleared through the clearing and plugging device, and then the permeation component is placed in the column using the plug-in device; there is no need to carry out large 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 effectively guaranteed, the service life of the permeable reaction wall can be effectively extended, and the pollutants in groundwater can be removed in a long-term and efficient manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a permeable reactive wall system according to an embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the structure of the permeable reactive wall; Figure 3 yes Figure 2 Schematic diagram of the structure of the middle net column; Figure 4 yes Figure 1 Schematic diagram of the structure of the middle cover; Figure 5 yes Figure 1 Schematic diagram of the structure of the scraper assembly of the medium blockage clearing device.

[0016] In the figure: a permeable reaction wall 1, a blockage clearing device 2, a box 11, a water inlet area 12, a permeation area 13, a permeation unit 14, a column 141, a net column 142, an active material 143, a water outlet area 16, a buffer layer 17, an annular frame 21, a first annular support 221, a first arc-shaped support rod 222, a first telescopic mechanism 223, a spiral blade 224, a plate frame 151, a plate unit 152, a water guide groove 154, a water storage chamber 156, a main frame 3, a blockage remover storage tank 4, a bacterial liquid storage tank 5, and a blower 6. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is described in detail below.

[0018] 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 plug-out device 2, and the plug-in device and the plug-out device 2 are installed above the permeable reaction wall 1. Figure 2 As shown, the permeable reaction wall 1 includes a box body 11 with an opening at the top, and a plurality of permeable reaction groups are arranged in the box body. Each permeable reaction group includes a plurality of permeation units 14 connected in sequence, and the permeation unit includes a column 141, and a permeation assembly is arranged in the column 141. The permeation assembly is detachably connected to the column 141, and the permeation assembly can be inserted into the column 141 or pulled out from 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 3As shown, a bottom plate that can be opened and closed is provided at the bottom opening of the net column 142. The net column 142 is filled with active material 143. Among them, the active material 143 can adopt the bioactive composite material disclosed in the patent document with patent number CN202211344541.7 and the name "Coupled repair method for emergency disposal, long-term reduction and intelligent monitoring of groundwater pollution in retired chemical land", or the bioactive composite material disclosed in the patent document with patent number CN202210049070.0 and the name "An electric-permeable reaction wall system based on bioactive composite materials and its preparation method and application". The bottom plate is covered at the bottom end of the net column to support the active material. When the bottom plate is opened, the active material can fall from the opening at the bottom end of the net column. The column barrel 141 is fixedly connected to the box body 11, and the outer wall of the net column 142 is gap-matched with the inner wall of the column barrel 141, which is convenient for plugging and unplugging the net column 142. Among them, the plug-in device is used to pull out the permeation component from the column and insert the permeation component into the column. The 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 blockages and prevent the blockages from falling into the column and affecting the insertion of the permeation component.

[0019] The permeable reaction wall system with clearing and plugging function of the above-mentioned embodiment is provided with a plurality of permeation reaction groups in the housing, each permeation reaction group is provided with a plurality 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 take out only the permeation component, and the clearing device can be used to clear the blockages on the net column surface of the permeation component and between the active materials, and then the plug-in device can be used to put the permeation component into the column. There is no need to carry out large 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 effectively guaranteed, the service life of the permeable reaction wall can be effectively extended, and the pollutants in groundwater can be removed in a long-term and efficient manner.

[0020] Preferably, Figure 2As shown, the box 11 is provided with an inlet area 12, an infiltration area 13 and an outlet area 16 in sequence along the groundwater flow direction, and a number of 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 filled with quartz sand, and the quartz sand particle size is preferably 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 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 groundwater flow direction, and the water inlet and the water outlet are both covered with a filter. A water outlet is provided on the side wall of the box body at the water 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 infiltration unit in the infiltration reaction group in the groundwater flow direction, and the water inlet and the water outlet are both covered with filter screens.

[0021] Preferably, the column 141 and the net column 142 are both cylindrical. The infiltration unit adopts a cylindrical column and a 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, so that the active material can fully play its role and improve the purification effect. Moreover, after taking out the infiltration component, when the blockage on the surface of the net column is cleared by the clearing device, the cylindrical net column is more conducive to the clearing device to handle, reduce resistance and friction, and there will be no dead corners that are difficult to reach, thereby improving the clearing effect.

[0022] 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, and the quartz sand particle size is preferably 2 to 3 mm. A buffer layer is provided between adjacent permeation units to adjust the permeability performance. If the permeability performance of 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 a 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.

[0023] like Figure 1 As shown, the permeable reaction wall is arranged below the ground surface, a main frame 3 is arranged above the permeable reaction wall (ie above the ground surface), and both the plugging and unplugging device 2 are installed on the main frame 3 .

[0024] The plug-in device is installed on the main frame 3 through the first three-dimensional moving component, and the first three-dimensional moving component drives the plug-in device to move up and down, front and back, and left and right in three dimensions. The plug-in device includes a hook claw, which can hook the top of the net column of the infiltration component. Driven by the first three-dimensional moving component, the plug-in device moves to the top of the corresponding infiltration unit, hooks the top of the net column and moves upward to pull the infiltration component out of the column. After clearing the blockage, the plug-in device drives the infiltration component to move downward and inserts the infiltration component into the column.

[0025] As a preferred example, the clearing device 2 includes an annular frame 21, a scraper assembly, a clearing agent injection assembly, a vibration assembly and a bacterial liquid injection assembly, and the scraper assembly, the clearing agent injection assembly, the vibration assembly and the bacterial liquid injection assembly are all installed on the annular frame 21. The annular frame 21 is installed on the main frame 3 through a second three-dimensional moving assembly, and the second three-dimensional moving assembly drives the clearing device to move up and down, front and back, and left and right in three dimensions. After the plug-in device pulls out the penetration assembly from the column, the clearing device is driven by the second three-dimensional moving assembly to move above the penetration assembly, and moves up and down along the net column during the clearing process.

[0026] Specifically, Figure 5 As shown, the scraper assembly includes 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 through a first rotating mechanism, and the plurality of first arc-shaped support rods 222 are respectively mounted on the first annular support 221 along the circumference of the first annular support 221 through a first telescopic mechanism 223. The first rotating mechanism is used to drive the first annular support 221 to rotate around its center, 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. All the first arc-shaped support rods 222 move inward under the drive of the first telescopic mechanism 223 and can be spliced ​​to form a circular ring that is concentric with the first annular support and located inside the first annular support, and the diameter of the circular ring is slightly larger than the outer diameter of the net column. A spiral blade 224 is provided on the side of the first arc-shaped support rod 222 away from the first annular support 221. After all the first arc-shaped support rods 222 are spliced ​​to form a circular ring, the spiral blade 224 is close to the outer surface of the net column.

[0027] When the scraper assembly is working, all the first telescopic mechanisms drive the first arc-shaped support rods to move toward the center of the first annular support until they are spliced ​​to form a ring, and the spiral blades abut the outer periphery of the net column. The first rotating mechanism drives the first annular support 221 to drive the first arc-shaped support rod 222 to rotate. At the same time, the blockage clearing device moves up and down along the net column, and the spiral blades move on the net column to scrape off the blockages on the surface of the net column. During the rotation and up and down movement process, the spiral blades can gradually change the contact angle and strength with the surface of the net column, which helps to adapt to the structural changes on the surface of the net column, so that the blockages in the outer wall and mesh of the net column are scraped off effectively, and the direct impact and wear of the blades on the net column can also be reduced. At the same time, the spiral blades that rotate and move downward form a spiral flow channel on the outer surface of the net column, and the scraped blockages can move downward under the guidance of the spiral blades, and the blockages that fall off the upper part will not adhere to the lower part, thereby 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 support, and all the first arc-shaped support rods are retracted.

[0028] The declogging agent injection assembly includes a second annular bracket and a plurality of first arc-shaped branch pipes. The second annular bracket is concentrically mounted on the annular frame through a second rotating mechanism. The plurality of first arc-shaped branch pipes are respectively mounted on the second annular bracket along the circumference of the second annular bracket through a second telescopic mechanism. The second rotating mechanism is used to drive the second annular bracket to rotate around its center of circle, and the second telescopic mechanism is used to drive the first arc-shaped branch pipes to move toward or away from the center of circle of the second annular bracket. The first arc-shaped branch pipes can be spliced ​​to form a circular ring that is concentric with the second annular bracket and located inside the second annular bracket under the drive of the second telescopic mechanism, and the diameter of the circular ring is slightly larger than the outer diameter of the net column. A plurality of first injection heads are provided on the side of the first arc-shaped branch pipe away from the second annular bracket. After all the first arc-shaped branch pipes are spliced ​​to form a circular ring, the first injection head is close to the outer surface of the net column.

[0029] When the unblocking agent injection assembly is working, all the first arc-shaped branches are connected to the unblocking agent storage tank, and all the second telescopic mechanisms drive the first arc-shaped branches to move toward the center of the second annular bracket until they are spliced ​​to form a ring, and all the first injection heads abut the outer periphery of the net column. The second rotating mechanism drives the second annular bracket to drive the first arc-shaped branches to rotate. At the same time, the clearing device moves up and down along the net column, and the first injection head sprays the unblocking agent into the inside of the net column. The unblocking agent penetrates into the active material and dissolves the blockages between the active materials. During the rotation and up and down movement of the first injection head, the unblocking agent is sprayed into the inside of the net column. The spraying range covers the entire outer surface of the net column, and there is no dead angle for spraying, so that the unblocking agent fully penetrates into the active material and improves the dissolution effect. When the unblocking agent injection assembly is not working, all the second telescopic mechanisms drive the first arc-shaped branches to move away from the center of the second annular bracket, and all the first arc-shaped branches are retracted.

[0030] The vibration assembly includes a first annular support plate and a plurality of first arc-shaped support plates. The first annular support plate is installed on the annular frame through a vibration member, and the plurality of first arc-shaped support plates are respectively installed on the first annular support plate along the circumference of the first annular support plate through 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. After all the first arc-shaped support plates are spliced ​​to form a cylinder, the cylinder is close to the outer surface of the net column.

[0031] When the vibration component is working, all the third telescopic mechanisms drive the first arc-shaped support plate to move toward the center of the first annular support plate until they are spliced ​​to form a cylinder, and all the first arc-shaped support plates abut the outer periphery of the net column. The vibrating member drives the first annular support plate to drive the first arc-shaped support plate to vibrate, and then drives the net column to vibrate, so that the blockages on the surface of the net column and between the active materials fall off. The clearing device moves downward from the top of the net column, stops after moving a preset length, vibrates for a preset time, then moves downward for a preset length and stops, vibrates for a preset time, in sequence until the clearing device moves to the bottom of the net column. When the vibration component is not working, all the third telescopic mechanisms drive the first arc-shaped support plate to move away from the center of the first annular support plate, and retract all the first arc-shaped support plates.

[0032] The bacterial liquid injection assembly includes a third annular support and a plurality of second arc-shaped branches. The third annular support is concentrically mounted on the annular frame through a third rotating mechanism, and the plurality of second arc-shaped branches are respectively mounted on the third annular support along the circumference of the third annular support through a fourth telescopic mechanism. The third rotating mechanism is used to drive the third annular support to rotate around its center, and the fourth telescopic mechanism is used to drive the second arc-shaped branches to move closer to or away from the center of the third annular support. All the second arc-shaped branches can be spliced ​​together to form a circular ring that is concentric with the third annular support and located inside the third annular support under the drive of the fourth telescopic mechanism, and the diameter of the circular ring is slightly larger than the outer diameter of the net column. A plurality of second injection heads are provided on the side of the second arc-shaped branch away from the third annular support. After all the second arc-shaped branches are spliced ​​together to form a circular ring, the second injection heads are in close contact with the outer surface of the net column.

[0033] When the bacterial liquid injection assembly is working, all the second arc-shaped branches are connected to the bacterial liquid storage tank, and all the fourth telescopic mechanisms drive the second arc-shaped branches to move toward the center of the third annular bracket until they are spliced ​​to form a ring, and all the second injection heads abut the outer periphery of the net column. The third rotating mechanism drives the third annular bracket to drive the second arc-shaped branches to rotate. At the same time, the clearing device moves up and down along the net column, and the second injection head sprays bacterial liquid into the inside of the net column, and the bacterial liquid penetrates into the active material. During the rotation and up and down movement, the second injection head sprays bacterial liquid into the inside of the net column, and the injection range covers the entire outer surface of the net column, without injection dead angles, so that the bacterial liquid fully penetrates into the active material, improving the degradation ability of microorganisms. As needed, the second arc-shaped branch can also be connected to a blower to introduce air into the active material to provide oxygen for aerobic microorganisms, or to drive the pollutants in the active material to move, so that the pollutants fully contact with the active material to react, thereby improving the purification ability 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.

[0034] 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 up and down, front and back, and left and right in three dimensions. 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 an existing structure.

[0035] When the replacement device is working, the replacement device is driven by the third three-dimensional moving component to move to the vicinity of the corresponding active component. The lower telescopic frame is extended so that the recovery bag is located directly below the net column. The robot opens the bottom plate at the bottom of the net column, and the active material in the net column falls into the recovery bag. The robot covers the bottom plate at the bottom of the net column. The upper telescopic frame is extended so that the discharge barrel is located directly above the net column, and the telescopic plate at the bottom of the discharge barrel is retracted. The new active material in the discharge barrel falls into the net column until the net column is filled with active materials and the telescopic plate at the bottom of the discharge barrel is extended. When the replacement device is not working, the replacement device moves to a position away from the net column.

[0036] As a preferred example, Figure 4As shown, the cover plate includes a plate frame 151 and a plurality of plate units 152. One side of the plate unit 152 is hinged to the plate frame 151, and the other side is provided with a pull ring to facilitate opening and closing the plate unit. A dirt collecting bag is provided on the upper surface of the plate unit 152, and a water guide groove 154 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 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.

[0037] Preferably, the number of plate units is consistent with the number of permeation units, and the plate units are arranged one by one with the permeation units. A plate unit is arranged above a permeation unit, and the plate unit corresponding to the permeation unit to be processed can be opened independently as needed, without opening all the cover plates, which is simple to operate and protects other permeation units from being affected.

[0038] When the infiltration component needs to be removed, the plate unit above the infiltration component is opened, and after the infiltration component is pulled out, the plate unit is covered again. During the clearing process, the blockage and the waste liquid of the unblocking agent fall into the dirt collecting bag of the lower plate unit, the blockage remains in the dirt collecting bag, and the waste liquid of the unblocking agent flows into the water storage chamber 156 through the water guide groove 154 so as to be recycled and reused.

[0039] The present invention also provides an operation method of the above-mentioned permeable reaction wall system with clearing and plugging function, comprising the following steps: Step 10, determining the infiltration unit to be cleared and the infiltration unit to be replaced.

[0040] 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): K = V ÷ [(h2 - h1) ÷ L] Formula (1) Where V represents the average value of the inlet and outlet flow rates of the permeation unit, K represents the permeability coefficient of the permeation unit, (h2-h1) represents the 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 permeability coefficient of the permeation unit is lower than the permeability coefficient of the aquifer medium in the surrounding site, the permeation unit is determined as the permeation unit to be cleared. If the permeability coefficients of all permeation units in the same permeation reaction group are not lower than the permeability coefficients of the aquifer medium in the surrounding site, and the outlet pollutant concentration of the permeation reaction group is higher than the risk control target value, all permeation units in the permeation reaction group are determined as permeation units to be replaced.

[0041] Step 20, using the plug-in device and the clearing device to process all the infiltration units to be cleared one by one.

[0042] Step 30, using the plug-in device, the blockage clearing device and the replacement device to process all the infiltration units to be replaced one by one.

[0043] The operation method of the permeable reaction wall system with clearing and plugging function of this embodiment is to set a plurality of permeation reaction groups in the box body, each permeation reaction group is provided with a plurality of permeation units connected in sequence, and the permeation component in each permeation unit can be separated 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 the permeation unit is lower than the permeability coefficient of the aquifer medium in the surrounding site, only the permeation component of the permeation unit is taken out by the plug-in device, and the blockages on the net column surface and between the active materials of the permeation component are cleared by the clearing and plugging device, and finally the permeation component is placed in the column by the plug-in device. If the permeability coefficients of all the permeation units in a group of permeation reaction groups are not lower than the permeability coefficient of the aquifer medium in the surrounding site, but the outlet pollutant concentration of the group of permeation reaction groups is higher than the risk control target value, only the permeation components of the permeation units in the group of permeation reaction groups are taken out by the plug-in device, and the blockages on the net column surface of the permeation component are cleared by the clearing and plugging device, and then the active materials in the net column are replaced by the replacement device, and finally the permeation component is placed in the column by 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 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.

[0044] Preferably, in step 20, a single infiltration unit to be cleared is processed using a plugging and unplugging 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 out of the column, and then cover the plate unit 152.

[0045] Step 202, all first telescopic mechanisms drive all first arc-shaped support rods to move toward the center of the first annular support until they are spliced ​​to form a circle, and the spiral blades abut against the outer periphery of the top of the net post. The first rotating mechanism drives the first annular support to drive the first arc-shaped support rods to rotate. At the same time, the blockage clearing device moves from top to bottom along the net post, and the spiral blades contact the surface of the net post to scrape off the blockage on the surface of the net post. The blockage on the surface of the net post falls into the dirt collecting bag of the lower plate unit. When the blockage clearing device moves to the bottom of the net post, all first telescopic mechanisms drive all first arc-shaped support rods to move away from the center of the first annular support.

[0046] Step 203, the clearing device moves from bottom to top along the net column until it moves to the top of the net column. All third telescopic mechanisms drive all first arc-shaped support plates to move toward the center of the first annular support plate until the first arc-shaped support plate abuts against the outer periphery of the top of the net column. All vibrators drive the first annular support plate to drive the first arc-shaped support plate to vibrate, and then the net column vibrates. At the same time, the clearing device moves from top to bottom along the net column in sections (that is, the clearing device moves downward from the top of the net column, stops after moving a preset length, and then moves downward for a preset length after a preset time period, and then stops, in sequence until it moves to the bottom of the net column). Under the action of vibration, the blockage on the surface of the net column falls off and eventually falls into the dirt collecting bag of the plate unit below, and the blocked gas between the active materials can also be discharged. When the clearing device moves to the bottom of the net column, the vibrators are 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.

[0047] Step 204, all the second telescopic mechanisms drive all the first arc-shaped branches to move toward the center of the second annular support until they are spliced ​​to form a ring, and all the first spray heads abut the outer periphery of the bottom end of the net column; the second rotating mechanism drives the second annular support to drive the first arc-shaped branch to rotate, and at the same time, the clearing device moves from bottom to top along the net column, and the first spray head on the first arc-shaped branch sprays the unblocking agent into the inside of the net column, and the unblocking agent penetrates into the active material to dissolve the blockage between the active materials. The waste liquid of the unblocking agent falls into the dirt collecting bag of the lower plate unit and flows into the water storage chamber 156 through the water guide groove 154. When the clearing device moves to the top of the net column, all the second telescopic mechanisms drive all the first arc-shaped branches to move away from the center of the second annular support.

[0048] 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 the first arc-shaped support plate abuts against the outer periphery of the top of the net column. All vibrators drive the first annular support plate to drive the first arc-shaped support plate to vibrate, and then the net column vibrates. At the same time, the blockage clearing device moves along the net column from top to bottom in sections (that is, the blockage clearing device moves downward from the top of the net column, stops after moving a preset length, and then moves downward for a preset length after a preset time period, and then stops, in sequence until it moves to the bottom of the net column). Under the action of vibration, the blockages between the active materials fall off and eventually fall into the dirt collecting bag of the lower plate unit, and further discharges the blocked gas between the active materials. When the blockage clearing device moves to the bottom of the net column, the vibrators are 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.

[0049] Step 206: All fourth telescopic mechanisms drive all second arc-shaped branches to move toward the center of the third annular support until they are spliced ​​to form a ring, and the second spray head abuts against the outer periphery of the bottom end of the net column; the third rotating mechanism drives the third annular support to drive the second arc-shaped branches to rotate, and at the same time, the clearing device moves from bottom to top along the net column, and the second spray head on the second arc-shaped branch sprays bacterial liquid into the inside of the net column, and the bacterial liquid penetrates into the active material. When the clearing device moves to the top of the net column, all fourth telescopic mechanisms drive all second arc-shaped branches to move away from the center of the third annular support. The clearing device continues to move upward until it moves to the top of the net column.

[0050] Step 207, open the plate unit 152 located above the permeation unit, put the permeation assembly into the column using the plug-in device, and then cover the plate unit 152.

[0051] Preferably, as required, if the removal of pollutants from the active materials in the net column needs to be carried out under aerobic conditions, in step 206, after the second injection head abuts the outer periphery of the bottom end of the net column, the second arc branch pipe is first connected to the blower, the third rotating mechanism drives the third annular bracket to drive the second arc branch pipe to rotate, and at the same time, the clearing device moves from bottom to top along the net column, and the second injection head on the second arc branch pipe sprays air with a certain pressure into the inside of the net column, which can discharge the gas generated by the microorganisms between the active materials. At the same time, dense microbubbles are formed, which drive the pollutants remaining between the active materials to move, so that the pollutants fully contact and react with the active materials to remove the pollutants between the active materials. Moreover, air is filled between the active materials to provide oxygen for aerobic microorganisms. When the clearing device moves to the top of the net column, the third rotating mechanism stops working. The second arc branch pipe is connected to the bacterial liquid storage tank, the third rotating mechanism drives the third annular bracket to drive the second arc branch pipe to rotate, and at the same time, the clearing device moves from top to bottom along the net column, and the second injection head sprays bacterial liquid into the inside of the net column, and the bacterial liquid penetrates into the active material.

[0052] Preferably, 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 clearing device to the top of the infiltration unit, open the plate unit 152 located above the infiltration unit, use the plug-in device to lift the infiltration component of the infiltration unit out of the column, and then cover the plate unit 152.

[0053] Step 302: All first telescopic mechanisms drive all first arc-shaped support rods to move toward the center of the first annular support until they are spliced ​​to form a circle, and the spiral blades abut against the outer periphery of the top of the net post. The first rotating mechanism drives the first annular support to drive the first arc-shaped support rods to rotate. At the same time, the blockage clearing device moves from top to bottom along the net post, and the spiral blades contact the surface of the net post to scrape off the blockage on the surface of the net post. The blockage on the surface of the net post falls into the dirt collecting bag of the lower plate unit. When the blockage clearing device moves to the bottom of the net post, all first telescopic mechanisms drive all first arc-shaped support rods to move away from the center of the first annular support.

[0054] Step 303, the blockage clearing device moves from bottom to top along the net post until the blockage clearing device moves to the top of the net post. All third telescopic mechanisms drive all first arc-shaped support plates to move toward the center of the first annular support plate until the first arc-shaped support plate abuts against the outer periphery of the top of the net post. All vibrators drive the first annular support plate to drive the first arc-shaped support plate to vibrate, and then the net post vibrates. At the same time, the blockage clearing device moves from top to bottom along the net post in sections (that is, the blockage clearing device moves downward from the top of the net post, stops after moving a preset length, and then moves downward for a preset length after a preset time period, and then stops, in sequence until it moves to the bottom of 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 bag of the lower plate unit. When the blockage clearing device moves to the bottom of the net post, the vibrators are 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. Move the blockage clearing device to a position away from the net post.

[0055] Step 304, move the replacement device to the vicinity of the net post, extend the lower telescopic frame so that the recovery bag is located directly below the net post, use a robot to open the bottom plate at the bottom of the net post, and the active material in the net post falls into the recovery bag on the lower telescopic frame. Use a robot to cover 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 located directly above the net post, retract the telescopic plate at the bottom of the discharge barrel, and the new active material in the discharge barrel falls into the net post until 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.

[0056] Step 305, move the clearing device to the bottom of the net column, all the fourth telescopic mechanisms drive all the second arc-shaped branches to move toward the center of the third annular support until they are spliced ​​to form a ring, and all the second injection heads abut the outer periphery of the bottom end of the net column. The third rotating mechanism drives the third annular support to drive the second arc-shaped branches to rotate. At the same time, the clearing device moves from bottom to top along the net column, and the second injection heads on the second arc-shaped branches spray bacterial liquid into the inside of the net column, and the bacterial liquid penetrates into the active material. When the clearing device moves to the top of the net column, all the fourth telescopic mechanisms drive all the second arc-shaped branches to move away from the center of the third annular support. The clearing device continues to move upward until it is located above the net column.

[0057] Step 306, open the plate unit 152 located above the permeation unit, put the permeation assembly into the column using the plug-in device, and then cover the plate unit 152.

[0058] Preferably, as required, if the removal of pollutants from the active materials in the net column needs to be carried out under aerobic conditions, in step 305, after the second injection head abuts the outer periphery of the bottom end of the net column, the second arc branch pipe is first connected to the blower, and the third rotating mechanism drives the third annular bracket to drive the second arc branch pipe to rotate. At the same time, the clearing device moves from bottom to top along the net column, and the second injection head on the second arc branch pipe sprays air with a certain pressure into the inside of the net column. The air fills between the active materials to provide oxygen for aerobic microorganisms. When the clearing device moves to the top of the net column, the third rotating mechanism stops working. The second arc branch pipe is connected to the bacterial liquid storage tank, and the third rotating mechanism drives the third annular bracket to drive the second arc branch pipe to rotate. At the same time, the clearing device moves from top to bottom along the net column, and the second injection head sprays bacterial liquid into the inside of the net column, and the bacterial liquid penetrates into the active material.

[0059] The operation method of the permeable reaction wall system with a clearing function of this embodiment is as follows: when treating the permeation unit to be cleared, the scraper assembly of the 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 surface of the net column but has not been scraped off is separated from the surface of the net column, and then the unblocking agent injection assembly is used to spray the unblocking agent 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, and finally, according to needs, if the active materials in the net column need to remove pollutants under aerobic conditions, the bacterial liquid injection assembly is used to first spray air into the net column, and then spray 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 spray bacterial liquid into the net column, so that the microorganisms grow and reproduce rapidly between the active materials, improve the reaction activity, and improve the purification effect of the permeation unit. When treating 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 the microorganisms can grow and multiply rapidly between the active materials, improve the reaction activity, and improve the purification effect of the osmosis unit.

[0060] 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 above specific embodiments, and the descriptions in the above specific embodiments and the specification are only for further illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed for protection.

Claims

1. A permeable reaction wall system with clearing and plugging function, characterized in that: The invention comprises a permeable reaction wall (1), a plug-in device and a clearing device (2), wherein the plug-in device and the 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 permeable reaction groups are arranged in the box body; each permeable reaction group comprises a plurality of permeable units (14) connected in sequence, wherein the permeable unit comprises a column (141), wherein a permeable assembly is arranged in the column (141); the permeable 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 tube (141) is fixedly connected to the box body (11), and the outer wall of the net column (142) and the inner wall of the column tube (141) are clearance-matched; an openable and closable cover plate is provided at the opening of the box body (11); the plug-in device is used to pull out the permeation component from the column tube (141) and insert the permeation component into the column tube (141); the clearing device (2) is used to clear the blockage between the surface of the net column (142) and the active material (143).

2. The permeable reactive wall system according to claim 1, characterized in that: The blockage clearing device comprises an annular frame (21), a scraper assembly, a blockage remover spray assembly, a vibration assembly and a bacterial liquid spray assembly, wherein the scraper assembly, the blockage remover spray assembly, the vibration assembly and the bacterial liquid spray 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 coaxially 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 towards 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 that is 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 being concentrically mounted on an annular frame (21) via a second rotating mechanism, and the first arc-shaped branch pipes being 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 a side of the first arc-shaped branch pipe away from the second annular support; The vibration assembly comprises a first annular support plate and a plurality of first arc-shaped support plates, the first annular support plate being mounted on an annular frame (21) via a vibration member, and the first arc-shaped support plate 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 arc-shaped support plate to move towards 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 branch pipes. The third annular bracket is concentrically mounted on the annular frame through a third rotating mechanism, and the second arc-shaped branch pipes are mounted on the third annular bracket through 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 branch pipes to move toward or away from the center of the third annular bracket. All the second arc-shaped branch pipes can be spliced ​​to form a circular ring concentric with the third annular bracket and located inside 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 branch pipe away from the third annular bracket.

3. The permeable reactive wall system according to claim 1, characterized in that: It 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 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.

4. 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 body units (152), wherein the plate body units (152) are hingedly connected to the plate frame (151); a dirt collecting pocket is provided on the upper surface of the plate body unit (152); a water guide groove (154) is provided on the side where the plate body unit is hingedly connected to the plate frame, 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 body unit, and the water storage cavity (156) is communicated with the water guide groove (154).

5. The permeable reactive wall system according to claim 4, 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.

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

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

8. A method for operating a permeable reactive wall system according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 10, determining the permeation unit to be cleared and the permeation 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 as 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 outlet pollutant concentration of the permeability reaction group is higher than the risk control target value, all permeability units in the permeability reaction group are determined as permeability 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, using the plug-in device, the blockage clearing device and the replacement device to process all the infiltration units to be replaced one by one.

9. The operating method according to claim 8, characterized in that: In step 20, a single infiltration unit to be cleared is processed using a plugging and unplugging 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 out of the column, and then cover the plate unit (152); Step 202: All first telescopic mechanisms of the clearing device drive the first arc-shaped support rod to move toward the center of the first annular support until the spiral blade abuts against the outer periphery of the top of the net post; the first rotating mechanism drives the first annular support to drive the first arc-shaped support rod to rotate, and at the same time, the clearing device moves from top to bottom along the net post, and the spiral blade contacts the surface of the net post to scrape off the blockage on the surface of the net post; when the clearing device moves to the bottom of the net post, all first telescopic mechanisms drive all first arc-shaped support rods to move away from the center of the first annular support; Step 203, the blockage clearing device moves from bottom to top along the net post until it moves to the top of the net post; all the third telescopic mechanisms drive all the first arc-shaped support plates to move toward the center of the circle close to the first annular support plate until all the first arc-shaped support plates abut against the outer periphery of the top of the net post; all the vibrating members drive the first annular support plate to drive the first arc-shaped support plate to vibrate, and then the net post vibrates, and at the same time, the blockage clearing device moves from top to bottom 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 bag of the plate unit below; when the blockage clearing device moves to the bottom of the net post, the vibrating member is turned off, and all the third telescopic mechanisms drive all the first arc-shaped support plates to move away from the center of the circle of the first annular support plate; Step 204: all the second telescopic mechanisms drive all the first arc-shaped branch pipes to move toward the center of the second annular support until all the first injection heads abut against the outer periphery of the bottom end of the net column; the second rotating mechanism drives the second annular support to drive the first arc-shaped branch pipes to rotate, and at the same time, the clearing device moves from bottom to top along the net column, and the first injection heads on the first arc-shaped branch pipes spray the unblocking agent into the inside of the net column, and the unblocking agent penetrates into the active material to dissolve the blockages between the active materials; when the clearing device moves to the top of the net column, all the second telescopic mechanisms drive all the first arc-shaped branch pipes 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 end of the net column; all vibrators drive the first annular support plate to drive the first arc-shaped support plate to vibrate, 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 plate unit below; 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 vibrators are 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 the fourth telescopic mechanisms drive all the second arc-shaped branch pipes to move toward the center of the third annular support until all the second spray heads abut against the outer periphery of the bottom end of the net column; the third rotating mechanism drives the third annular support to drive the second arc-shaped branch pipes to rotate, and at the same time, the clearing device moves upward along the net column, and the second spray heads on the second arc-shaped branch pipes spray bacterial liquid into the inside of the net column, and the bacterial liquid penetrates into the active material; when the clearing device moves to the top of the net column, all the fourth telescopic mechanisms drive all the second arc-shaped branch pipes to move away from the center of the third annular support; the clearing device continues to move upward until it is located above the net column; Step 207, open the plate unit (152) located above the permeation unit, put the permeation assembly into the column using the plug-in device, and then cover the plate unit (152).

10. The operating method according to claim 8, 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 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 out of the column, and then cover the plate unit (152); Step 302: all first telescopic mechanisms of the blockage clearing device drive all first arc-shaped support rods to move toward the center of the first annular support until the spiral blade abuts against the outer periphery of the top of the net post; the first rotating mechanism drives the first annular support to drive the first arc-shaped support rods to rotate, and at the same time, the blockage clearing device moves from top to bottom along the net post, and the spiral blade contacts the surface of the net post to scrape off the blockage on the surface of the net post, and the blockage on the surface of the net post falls into the dirt collecting bag of the lower plate unit; when the blockage clearing device moves to the bottom of the net post, all first telescopic mechanisms drive all first arc-shaped support rods to move away from the center of the first annular support; Step 303, the blockage clearing device moves from bottom to top along the net post until it moves to the top of the net post; all the third telescopic mechanisms drive all the first arc-shaped support plates to move toward the center of the first annular support plate until the first arc-shaped support plate abuts against the outer periphery of the top of the net post; all the vibrators drive the first annular support plate to drive the first arc-shaped support plate to vibrate, and then the net post vibrates, and at the same time, the blockage clearing device moves from top to bottom 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 bag of the plate unit below; when the blockage clearing device moves to the bottom of the net post, the vibrators are turned off; all the third telescopic mechanisms drive all the first arc-shaped 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 column, extend the lower telescopic frame so that the recovery bag is located directly below the net column, use the robot to open the bottom plate at the bottom of the net column, and the active material in the net column falls into the recovery bag; then use the robot to cover the bottom plate at the bottom of the net column; extend the upper telescopic frame so that the discharge barrel is located directly above the net column, retract the telescopic plate at the bottom of the discharge barrel, and the new active material in the discharge barrel falls into the net column, until the net column is filled with active materials and the telescopic plate at the bottom of the discharge barrel is extended; move the replacement device to a position away from the net column; Step 305, move the clearing device to the bottom of the net column, all the fourth telescopic mechanisms drive all the second arc-shaped branches to move toward the center of the third annular support until all the second spray heads abut against the outer periphery of the bottom end of the net column; the third rotating mechanism drives the third annular support to drive the second arc-shaped branches to rotate, and at the same time, the clearing device moves from bottom to top along the net column, and the second spray heads on the second arc-shaped branches spray bacterial liquid into the inside of the net column, and the bacterial liquid penetrates into the active material; when the clearing device moves to the top of the net column, all the fourth telescopic mechanisms drive all the second arc-shaped branches to move away from the center of the third annular support; the clearing device continues to move upward until it is located above the net column; Step 306, open the plate unit (152) located above the permeation unit, put the permeation assembly into the column using the plug-in device, and then cover the plate unit (152).

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