Intelligent soil heavy metal pollution remediation device
By using the rotating and scraping components of the intelligent soil heavy metal pollution remediation device, the problems of uneven electric field distribution and electrode contamination in electrostatic remediation technology have been solved. This has enabled dynamic optimization of the electric field and self-cleaning of the electrodes, improving remediation efficiency and stability, and extending the service life of the electrodes.
Patent Information
- Application Number
- CN202610013833.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-07
- Publication Date
- 2026-02-24
AI Technical Summary
In existing electrostatic remediation technologies, the distribution of the electrostatic field generated by fixed electrodes has inherent limitations. Especially in heterogeneous soils or complex polluted spatial distributions, the electric field lines tend to concentrate on low-resistance paths, resulting in uneven remediation and forming difficult-to-treat "dead zones" or "blind spots." The conversion (desorption) of pollutants from the strongly adsorbed state on the surface of soil particles to the weakly adsorbed state in pore water is the controlling step of the remediation rate. However, the static contact between the static electric field and the soil makes it difficult to effectively disturb the interface, resulting in low mass transfer efficiency.
An intelligent soil heavy metal pollution remediation device is adopted, including an electrolysis gas generation and drainage and pore water collection and storage drainage module, a slider insulation module, an interface positioning module, and an integrated EXG electrode. Combined with a rotating component and a scraping component, the rotating component makes the electrode rotate to form a dynamic sweeping field, and the scraping component removes the dirt on the electrode surface, realizing dynamic optimization of the electric field and real-time self-cleaning of the electrode.
The dynamic electric field uniformly covers the contaminated area, improving remediation efficiency, eliminating "dead zones" or "blind spots", ensuring the stability of the electric field during long-term operation of the electrode, reducing equipment maintenance frequency, and extending the electrode's service life.
Smart Images
Figure CN121551380A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of soil pollution remediation technology, and in particular relates to an intelligent soil heavy metal pollution remediation device. Background Technology
[0002] Heavy metal pollution in soil is a serious global environmental problem. Traditional remediation methods, such as topsoil replacement and solidification / stabilization, have limitations such as large engineering workload, easy secondary pollution, or damage to soil structure. Electrokinetic remediation technology, as an efficient and green in-situ remediation method, has received widespread attention in recent years. Its basic principle is to insert electrodes into contaminated soil and apply a DC or low-voltage AC electric field. Using electrokinetic effects such as electrodialysis, electromigration, and electrophoresis, heavy metal ions in soil pore water are driven to migrate directionally to the electrodes and are finally discharged through a collection system near the electrodes, thereby achieving soil purification.
[0003] Currently, typical electric remediation equipment mainly consists of a power supply system, an electrode array, and a pore water collection and drainage system. The electrodes are mostly parallel plates or columns, inserted into the soil in a fixed array. During operation, the system continuously applies an electric field and relies on collection wells or drainage pipes to collect the electrolyte rich in pollutants. However, in practical engineering applications, this technology has long been limited by the following key bottlenecks:
[0004] The distribution of the electrostatic field generated by fixed electrodes has inherent limitations, especially in heterogeneous soils or complex polluted spaces. The electric field lines tend to concentrate on low-resistance paths, resulting in uneven remediation and forming difficult-to-treat "dead zones" or "blind spots." The conversion (desorption) of pollutants from the strongly adsorbed state on the surface of soil particles to the weakly adsorbed state in pore water is the controlling step of the remediation rate. However, the static contact between the static electric field and the soil makes it difficult to effectively disturb the interface, resulting in low mass transfer efficiency. Summary of the Invention
[0005] This invention addresses the inherent limitations of electrostatic field distribution generated by fixed electrodes in existing technologies, particularly in heterogeneous soils or complex polluted spaces, where electric field lines tend to concentrate along low-resistance paths, leading to uneven remediation and creating difficult-to-treat "dead zones" or "blind spots." The conversion (desorption) of pollutants from their strongly adsorbed state on soil particle surfaces to their weakly adsorbed state in pore water is the controlling step in the remediation rate. However, the static contact between the static electric field and the soil makes it difficult to effectively disturb the interface, resulting in low mass transfer efficiency. Therefore, the following technical solution is proposed:
[0006] An intelligent soil heavy metal pollution remediation device includes: an electrolysis gas generation and pore water collection and storage module, a slider-type insulating module installed above the electrolysis gas generation and pore water collection and storage module, an interface positioning module sleeved on the outside of the slider-type insulating module, and an integrated EXG electrode coaxially arranged with the electrolysis gas generation and pore water collection and storage module.
[0007] The intelligent soil heavy metal pollution remediation device also includes a scraping component and a rotating component. The rotating component is connected to the top of the outer surface of the integrated EXG electrode, and the scraping component is connected between the rotating component and the electrolysis gas generation and pore water collection and storage module.
[0008] As a preferred embodiment of the above technical solution, the integrated EXG electrode is located inside the electrolysis gas generation and pore water collection and storage module. An exhaust pipe is provided between the inner wall of the electrolysis gas generation and pore water collection and storage module and the outer surface of the integrated EXG electrode, and the exhaust pipe passes through the slider-type insulating module. A drainage pipe is coaxially provided on the vertical center line of the electrolysis gas generation and pore water collection and storage module and the integrated EXG electrode, and the drainage pipe passes through the slider-type insulating module.
[0009] As a preferred embodiment of the above technical solution, the scraping assembly includes an installation ring fixedly installed at the bottom of the inner wall of the electrolysis gas production guide and pore water collection and storage guide module. A column is symmetrically embedded at the top of the installation ring. An anti-corrosion screw is rotatably connected between the top of the installation ring and the two columns. Sleeves are fitted around the anti-corrosion screw and the columns. A common movable ring connects multiple sleeves. A scraping ring is rotatably connected inside the movable ring and is fitted onto the outer surface of the integrated EXG electrode. A common positioning block connects the anti-corrosion screw and the top of the columns.
[0010] As a preferred embodiment of the above technical solution, the outer surface of the integrated EXG electrode is provided with a protrusion, and the inner surface of the scraper ring is provided with a positioning groove corresponding to the position of the protrusion.
[0011] As a preferred embodiment of the above technical solution, a positioning ring is sleeved on the outer side of the scraper ring, a groove is circumferentially formed on the outer surface of the positioning ring, a matching groove is formed inside the moving ring to fit the positioning ring, and a metal strip is circumferentially formed on the inner wall of the moving ring at the position of the matching groove.
[0012] As a preferred embodiment of the above technical solution, the rotating assembly includes a toothed ring sleeved on the top of the integrated EXG electrode, a gear meshing with the outer side of the toothed ring, the gear being sleeved on the outer side of the anti-corrosion screw, a speed-changing structure being connected to the top of the gear, a driving component being provided at the top of the speed-changing structure, the input end of the speed-changing structure being connected to the output end of the driving component, and a guide ring being welded to the top of the toothed ring.
[0013] As a preferred embodiment of the above technical solution, the output end of the speed-changing structure is connected to the gear, and a guide groove is provided on the inner wall of the gear ring at the protruding position on the outer surface of the integrated EXG electrode.
[0014] As a preferred embodiment of the above technical solution, the inner wall of the electrolysis gas generation guide and pore water collection and storage guide module is provided with a placement groove, the mounting ring is disposed inside the placement groove, and the inner wall of the electrolysis gas generation guide and pore water collection and storage guide module is provided with a flow guide hole near the outer surface of the placement groove.
[0015] As a preferred embodiment of the above technical solution, the transmission structure is composed of a protective shell, two sprockets and a chain. One sprocket is connected to the output shaft of the drive component, and the other sprocket is connected to a gear. The diameter of the sprocket located at the bottom of the drive component is smaller than the diameter of the other sprocket.
[0016] As a preferred embodiment of the above technology, the top of the moving ring and the scraper ring are provided with inclined grooves, the end of the inclined groove near the integrated EXG electrode is higher than the other end, and the highest point of the sleeve with respect to the ground is higher than the highest point of the scraper ring with respect to the ground.
[0017] The beneficial effects of this invention are as follows:
[0018] (1) The integrated EXG electrode is rotated by the rotating component, which changes the electric field from a "fixed static field" to a "dynamic sweeping field". This can break the inherent problem of electric field lines concentrating on low resistance paths in heterogeneous soil, allowing the electric field lines to cover the contaminated area more evenly and eliminating the "repair dead zone / blind zone" of traditional fixed electrodes.
[0019] (2) For heavy metal pollution with complex spatial distribution (such as local high concentration, soil particle aggregation area), dynamic electric field can act more fully on different areas, so that the driving force for heavy metal migration at each point is more balanced.
[0020] (3) And the scraping component is driven to run by the rotating component. At this time, the scraping component removes the heavy metal deposits and other dirt on the outer surface of the integrated EXG electrode. It removes the heavy metal deposits and other dirt on the outer surface of the integrated EXG electrode in real time, avoids the increase of electrode resistance and the attenuation of electric field strength caused by dirt, and ensures the electric field stability of the electrode during long-term operation.
[0021] (4) The electric field is dynamically optimized and the electrode is self-cleaned in real time through a single rotational motion. The two work together to improve the uniformity of the electric field coverage and the repair efficiency in heterogeneous soil. They also maintain the conductivity and electric field strength of the electrode through continuous self-cleaning, thereby enhancing the stability and sustainability of the repair process as a whole and reducing the performance degradation and maintenance frequency caused by electrode contamination.
[0022] (5) Furthermore, the scraping component vibrates during operation, thereby preventing the dirt after cleaning from accumulating on the surface of the scraping component. The vibration anti-accumulation design eliminates the need for frequent manual disassembly and cleaning of the electrode, reducing the frequency of equipment maintenance, lowering the manpower and time costs of operation and maintenance, and extending the service life of the integrated EXG electrode. Attached Figure Description
[0023] Figure 1 The diagram shown is a structural schematic of an intelligent soil heavy metal pollution remediation device according to Example 1;
[0024] Figure 2 The image shown is a cross-sectional view of an intelligent soil heavy metal pollution remediation device according to Example 1;
[0025] Figure 3 The diagram shown is a structural schematic of the scraping component in Embodiment 1;
[0026] Figure 4 The diagram shown is a schematic of the installation structure of the positioning ring in Embodiment 1;
[0027] Figure 5 What is shown is Figure 4 Schematic diagram of the structure of region A in the middle;
[0028] Figure 6 The diagram shown is a schematic of the installation structure of the rotating component in Embodiment 1.
[0029] In the diagram: 1. Electrolysis gas production guide and pore water collection and storage guide module; 2. Sliding block insulation module; 3. Interface positioning module; 4. Integrated EXG electrode; 5. Scraping assembly; 51. Mounting ring; 52. Column; 53. Corrosion-resistant screw; 54. Sleeve; 55. Moving ring; 56. Scraper ring; 57. Positioning block; 58. Positioning ring; 59. Groove; 510. Fitting groove; 511. Metal strip; 6. Rotating assembly; 61. Speed change structure; 62. Drive component; 63. Gear; 64. Gear ring; 65. Guide ring; 7. Drainage pipe; 8. Exhaust pipe. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.
[0031] Example 1
[0032] This invention provides an intelligent soil heavy metal pollution remediation device, such as... Figures 1 to 6As shown, it includes an electrolysis gas production and pore water collection and storage module 1, a slider-type insulating module 2 installed above the electrolysis gas production and pore water collection and storage module 1, an interface positioning module 3 sleeved on the outside of the slider-type insulating module 2, and an integrated EXG electrode 4 coaxially arranged with the electrolysis gas production and pore water collection and storage module 1.
[0033] The intelligent soil heavy metal pollution remediation device also includes a scraping component 5 and a rotating component 6. The rotating component 6 is connected to the top of the outer surface of the integrated EXG electrode 4, and the scraping component 5 is connected between the rotating component 6 and the electrolysis gas generation and pore water collection and storage module 1.
[0034] In existing technologies, the distribution of electrostatic fields generated by fixed electrodes has inherent limitations. Especially in heterogeneous soils or complex polluted spaces, electric field lines tend to concentrate on low-resistance paths, resulting in uneven remediation and forming difficult-to-treat "dead zones" or "blind spots." The conversion (desorption) of pollutants from strongly adsorbed states on soil particle surfaces to weakly adsorbed states in pore water is the controlling step in the remediation rate. However, the static contact between the static electric field and the soil makes it difficult to effectively disturb the interface, resulting in low mass transfer efficiency.
[0035] Within the structure, the integrated EXG electrode 4 is rotated by the rotating component 6, which changes the electric field from a "fixed static field" to a "dynamic sweeping field". This breaks the inherent problem of electric field lines concentrating on low-resistance paths in heterogeneous soil, allowing the electric field lines to cover the contaminated area more evenly and eliminating the "repair dead zones / blind spots" of traditional fixed electrodes.
[0036] For heavy metal pollution with complex spatial distribution (such as local high concentrations and soil particle aggregation areas), dynamic electric field can act more fully on different areas, making the driving force for heavy metal migration at each point more balanced.
[0037] Furthermore, the scraping component 5 is driven to operate by the rotating component 6. At this time, the scraping component 5 removes the heavy metal deposits and other dirt remaining on the outer surface of the integrated EXG electrode 4. It removes the heavy metal deposits and other dirt remaining on the outer surface of the integrated EXG electrode 4 in real time, avoiding the increase in electrode resistance and the attenuation of electric field strength caused by dirt, and ensuring the electric field stability of the electrode during long-term operation.
[0038] Furthermore, the scraping component 5 vibrates during operation, thereby preventing the dirt after cleaning from accumulating on the surface of the scraping component 5. The vibration anti-accumulation design eliminates the need for frequent manual disassembly and cleaning of the electrodes, reducing the frequency of equipment maintenance, lowering the manpower and time costs of operation and maintenance, and extending the service life of the integrated EXG electrode 4.
[0039] In use, the electrolysis gas production and pore water collection and storage module 1 is inserted into the soil. Then, the integrated EXG electrode 4 is energized. At this time, the rotating component 6 is energized. When the rotating component 6 is energized, it drives the integrated EXG electrode 4 to rotate inside the electrolysis gas production and pore water collection and storage module 1, so that the "fixed static field" of the integrated EXG electrode 4 becomes a "dynamic sweeping field". At the same time, the rotating component 6 drives the scraping component 5 to move vertically along the outer surface of the integrated EXG electrode 4, thereby cleaning the surface of the integrated EXG electrode 4.
[0040] Specifically, a slider-type insulating module 2 (specifically an insulating cover) is snapped onto the top of the outer surface of the electrolysis gas generation and pore water collection and storage module 1. Telescopic rods are symmetrically embedded at the top of the slider-type insulating module 2, and a horizontal rod connects the two telescopic rods. An indicator light is embedded at the highest point of the horizontal rod's outer surface. The electrolysis gas generation and pore water collection and storage module 1 is composed of a circular sleeve and a conical body. The outer surface of the circular sleeve has equidistant circular holes. An interface positioning module 3 (specifically a hollow ring) is snapped onto the outer surface of the slider-type insulating module 2. Inside the electrolysis gas generation and pore water collection and storage module 1… An integrated EXG electrode 4 is coaxially mounted on the part. A rotating component 6 is fitted on the top of the outer surface of the integrated EXG electrode 4. A scraping component 5 is installed between the outer side of the rotating component 6 and the electrolysis gas production guide and the pore water collection and storage guide module 1. An exhaust pipe 8 is provided between the inner wall of the electrolysis gas production guide and the pore water collection and storage guide module 1 and the outer surface of the integrated EXG electrode 4 for the discharge of waste gas. The exhaust pipe 8 passes through the slider-type insulating module 2. A drainage pipe 7 is coaxially arranged on the vertical center line of the electrolysis gas production guide, the pore water collection and storage guide module 1 and the integrated EXG electrode 4. The drainage pipe 7 passes through and is connected to the slider-type insulating module 2 for the discharge of wastewater.
[0041] To address the issue of heavy metal deposits and other contaminants remaining on the outer surface of the integrated EXG electrode 4 as described in the above embodiments, the following solution is provided: Figures 2 to 5 As shown, the scraping assembly 5 includes an installation ring 51 fixedly installed at the bottom of the inner wall of the electrolysis gas production guide and pore water collection and storage guide module 1. The top of the installation ring 51 is symmetrically embedded with columns 52. The top of the installation ring 51 is rotatably connected to the two columns 52. The anti-corrosion screw 53 is sleeved on the outside of the anti-corrosion screw 53 and the columns 52. The same moving ring 55 is connected between the multiple sleeves 54. The scraping ring 56 is rotatably connected inside the moving ring 55 and is sleeved on the outer surface of the integrated EXG electrode 4. The same positioning block 57 is connected between the top of the anti-corrosion screw 53 and the columns 52.
[0042] When the anti-corrosion screw 53 rotates, because the column 52 and the outer sleeve 54 are slidably connected, the moving ring 55 synchronously limits the three sets of sleeves 54 (cannot rotate). Therefore, the thread force of the anti-corrosion screw 53 only drives its outer sleeve 54 to move up and down along the axial direction. At this time, under the action of the moving ring 55, the scraper ring 56 is synchronously driven to move down or up along the outer surface of the integrated EXG electrode 4, thereby cleaning the outer surface of the integrated EXG electrode 4.
[0043] Specifically, the inner wall of the electrolysis gas generation and pore water collection and storage module 1 is provided with a placement groove. An installation ring 51 is snapped into the placement groove of the electrolysis gas generation and pore water collection and storage module 1. A guide hole is provided on the inner wall of the electrolysis gas generation and pore water collection and storage module 1 near the outer surface of the placement groove to guide the scraped heavy metal scale and the wastewater after electrolysis out synchronously. Columns 52 are symmetrically embedded in the top of the installation ring 51. A corrosion-resistant screw 53 is rotatably connected between the top of the installation ring 51 and the two columns 52 via a bearing. Sleeves 54 are fitted on the outer sides of both the corrosion-resistant screw 53 and the columns 52. The sleeves 54 and the corrosion-resistant screw 53 are threaded together. The columns 52 and the sleeves 54 are connected... A sliding connection is used, with multiple sleeves 54 connected by a single movable ring 55. There are six movable rings 55 and eighteen sleeves 54 in total, arranged in groups of three. A scraper ring 56 is rotatably connected inside the movable ring 55 and is fitted onto the outer surface of the integrated EXG electrode 4. The outer surface of the integrated EXG electrode 4 has protrusions, and a positioning groove is formed on the inner surface of the scraper ring 56 corresponding to the protrusions. A positioning block 57 connects the top of the anti-corrosion screw 53 and the top of the column 52. The bottom of the column 52 and the positioning block 57 are snap-fitted together, and the anti-corrosion screw 53 and the positioning block 57 are rotatably connected, used to fix the anti-corrosion screw 53 and the column 52.
[0044] Furthermore, to prevent the accumulation of heavy metal dirt after scraping on the outside of the scraper ring 56 and the moving ring 55, a positioning ring 58 is sleeved on the outside of the scraper ring 56 and fixed by a fixing pin. The outer surface of the positioning ring 58 has grooves 59 equidistantly spaced around its circumference. The moving ring 55 has a matching groove 510 inside that matches the positioning ring 58. Metal strips 511 are equidistantly spaced around the inner wall of the moving ring 55 at the matching groove 510. The top of the moving ring 55 and the scraper ring 56 have inclined grooves. The end of the inclined groove near the integrated EXG electrode 4 is higher than the other end. The highest point of the sleeve 54 and the ground is higher than the highest point of the scraper ring 56 and the ground, so that the cleaned heavy metal dirt falls outward along the inclined groove and is prevented from entering the engagement position between the sleeve 54 and the anti-corrosion screw 53.
[0045] In use, when the integrated EXG electrode 4 rotates, it drives the scraper ring 56 to rotate through the positioning groove and protrusion. When the scraper ring 56 rotates, it drives the positioning ring 58 to rotate inside the matching groove 510 of the moving ring 55. At this time, the metal strip 511 is inside the groove 59. When the positioning ring 58 rotates, it causes the metal strip 511 to bend and continue to rotate, so that the metal strip 511 enters another groove 59 of the positioning ring 58. At this time, the metal strip 511 is elastically reset. When the metal strip 511 resets, it impacts the positioning ring 58, causing the positioning ring 58 to vibrate. The positioning ring 58 transmits the vibration to the scraper ring 56, so that the heavy metal dirt cleaned by the scraper ring 56 moves downward along the inclined surface of the scraper ring 56.
[0046] To achieve the goal of rotating the integrated EXG electrode 4 as described in the above embodiments, thereby changing the integrated EXG electrode 4 from a "fixed static field" to a "dynamic sweeping field," the following solution is provided: Figure 3 and Figure 6 As shown, the rotating assembly 6 includes a toothed ring 64 fitted onto the top of the integrated EXG electrode 4. A gear 63 is meshed with the outer side of the toothed ring 64. The gear 63 is fitted onto the outer side of the anti-corrosion screw 53. A speed-changing structure 61 is connected to the top of the gear 63. A drive member 62 is provided at the top of the speed-changing structure 61. The input end of the speed-changing structure 61 is connected to the output end of the drive member 62. A guide ring 65 is welded to the top of the toothed ring 64. The output end of the speed-changing structure 61 is connected to the gear 63. A guide groove is provided on the inner wall of the toothed ring 64 at the protruding position on the outer surface of the integrated EXG electrode 4. The speed-changing structure 61 is composed of a protective shell, two sprockets and a chain. One sprocket is connected to the output shaft of the drive member 62, and the other sprocket is connected to the gear 63. The diameter of the sprocket at the bottom of the drive member 62 is smaller than the diameter of the other sprocket.
[0047] In use, the drive unit 62 is connected to the power supply and runs. When the drive unit 62 runs, it drives the transmission structure 61 to run (the transmission structure 61 is composed of a protective shell, two sprockets and a chain. One sprocket is connected to the output shaft of the drive unit 62, and the other sprocket is connected to the gear 63. The diameter of the sprocket at the bottom of the drive unit 62 is smaller than the diameter of the other sprocket. At this time, the rotation speed of the gear 63 is changed). At this time, the transmission structure 61 drives the gear 63 to rotate. When the gear 63 rotates, it drives the anti-corrosion screw 53 and the toothed ring 64 to rotate synchronously. At this time, the toothed ring 64 drives the guide ring 65 to rotate inside the positioning block 57. When the toothed ring 64 rotates, it drives the integrated EXG electrode 4 to rotate through the cooperation of the protrusion on the outer surface of the integrated EXG electrode 4 and the guide groove. When the integrated EXG electrode 4 rotates, it drives the scraper ring 56 to rotate inside the moving ring 55.
[0048] Specifically, a toothed ring 64 is fitted onto the top of the outer surface of the integrated EXG electrode 4. A guide groove is formed on the inner wall of the gear 63 corresponding to the protruding position on the outer surface of the integrated EXG electrode 4 for the installation of the integrated EXG electrode 4 and the toothed ring 64, and at the same time, it limits the positioning of the integrated EXG electrode 4. The gear 63 is meshed with the outer side of the toothed ring 64. The gear 63 is fitted onto the outer side of the anti-corrosion screw 53 and is connected to the anti-corrosion screw 53 by a key. The top of the gear 63 is connected to a speed-changing structure 61 through a coupling. The speed-changing structure 61 is composed of a protective shell, two sprockets and a chain, wherein both sprockets are rotatably connected to the anti-corrosion screw 53. Inside the protective shell, a chain is sleeved on the outside of two sprockets, and the bottom of the protective shell is fixedly installed on the top of the positioning block 57. A drive component 62 (specifically a waterproof motor) is fixedly installed on the top of the protective shell. The output shaft of the drive component 62 passes through the protective shell and is connected to the sprocket by a key. The other sprocket is connected to the gear 63 by a connecting shaft. The diameter of the sprocket at the bottom of the drive component 62 is smaller than the diameter of the other sprocket. A guide ring 65 is welded to the top of the toothed ring 64. A mating groove is opened on the end face of the positioning block 57 near the guide ring 65. The guide ring 65 is rotatably connected to the inside of the positioning block 57 through the mating groove.
[0049] Working principle: In actual use, the device samples the soil in the target area to detect the types of heavy metals (such as cadmium and lead), pollution concentration and soil permeability, and marks the scope of the remediation unit (matching the treatment scale of the equipment). Then, the integrated EXG electrode 4 is placed inside the electrolysis gas generation and pore water collection and storage module 1 along the toothed ring 64. Then, the drainage pipe 7 and the exhaust pipe 8 are inserted along the slider-type insulation module 2 and the slider-type insulation module 2 is fixed at the top of the electrolysis gas generation and pore water collection and storage module 1. Then, the interface positioning module 3 is fixed on the outside of the slider-type insulation module 2. At this time, the intelligent soil heavy metal pollution remediation device is assembled.
[0050] Next, the entire unit is placed inside the soil. At this time, the integrated EXG electrode 4 is energized, and the voltage gradient is set according to the degree of pollution (usually 1-2V / cm). The intelligent system is activated to monitor the current and soil pH in real time (to avoid pH abnormalities that could lead to heavy metal precipitation). Driven by the electric field, heavy metal ions migrate with the water in the pores to the integrated EXG electrode 4. The pore water containing heavy metals is collected by the electrolysis gas generation and discharge module 1 and discharged through the drainage pipe 7 to the adsorption treatment unit. The operating data is checked every 2-4 hours to detect the heavy metal concentration in the discharged liquid. If the efficiency decreases, the voltage is finely adjusted or the electrolyte (such as citric acid to enhance the solubility of heavy metals) is added through the intelligent system (the above is existing technology and will not be elaborated on here).
[0051] Simultaneously, the drive unit 62 is connected to the power supply and put into operation. When the drive unit 62 is running, it drives the transmission structure 61 (the transmission structure 61 is composed of a protective shell, two sprockets, and a chain. One sprocket is connected to the output shaft of the drive unit 62, and the other sprocket is connected to the gear 63. The diameter of the sprocket at the bottom of the drive unit 62 is smaller than the diameter of the other sprocket. At this time, the rotation speed of the gear 63 is changed. The transmission structure 61 drives the gear 63 to rotate. When the gear 63 rotates, it drives the anti-corrosion screw 53 and the gear ring 64 to rotate synchronously.
[0052] When the toothed ring 64 rotates, it drives the guide ring 65 to rotate inside the positioning block 57. When the toothed ring 64 rotates, it drives the integrated EXG electrode 4 to rotate through the cooperation of the protrusion on the outer surface of the integrated EXG electrode 4 and the guide groove. When the integrated EXG electrode 4 rotates, it drives the scraper ring 56 to rotate through the positioning groove and the protrusion, thus realizing the rotation of the integrated EXG electrode 4. After the integrated EXG electrode 4 rotates one revolution, the drive component 62 runs in the opposite direction to achieve the purpose of back-and-forth rotation.
[0053] When the scraper ring 56 rotates, it drives the positioning ring 58 to rotate inside the engagement groove 510 of the moving ring 55. At this time, the metal strip 511 is inside the groove 59. When the positioning ring 58 rotates, it causes the metal strip 511 to bend and continue to rotate, so that the metal strip 511 enters another groove 59 of the positioning ring 58. At this time, the metal strip 511 is elastically reset. When the metal strip 511 is reset, it impacts the positioning ring 58, causing the positioning ring 58 to vibrate. The positioning ring 58 transmits the vibration to the scraper ring 56, so that the heavy metal dirt cleaned by the scraper ring 56 moves downward along the inclined surface of the scraper ring 56.
[0054] Meanwhile, when the anti-corrosion screw 53 rotates, because the column 52 and the outer sleeve 54 are slidably connected, the moving ring 55 synchronously limits the three sets of sleeves 54 (so they cannot rotate). Therefore, the thread force of the anti-corrosion screw 53 only drives its outer sleeve 54 to move downward along the axis. At this time, under the action of the moving ring 55, the scraper ring 56 is synchronously driven to move downward along the outer surface of the integrated EXG electrode 4. When the scraper ring 56 moves downward, it cleans the outer surface of the integrated EXG electrode 4.
[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.
Claims
1. An intelligent soil heavy metal pollution remediation device, characterized in that, include: The intelligent soil heavy metal pollution remediation device also includes a scraping component (5) and a rotating component (6). The rotating component (6) is connected to the top of the outer surface of the integrated EXG electrode (4), and the scraping component (5) is connected between the rotating component (6) and the electrolysis gas generation and pore water collection and storage module (1).
2. The intelligent soil heavy metal pollution remediation device according to claim 1, characterized in that, The integrated EXG electrode (4) is located inside the electrolysis gas production and pore water collection and storage module (1). An exhaust pipe (8) is provided between the inner wall of the electrolysis gas production and pore water collection and storage module (1) and the outer surface of the integrated EXG electrode (4). The exhaust pipe (8) passes through the slider-type insulating module (2). A drainage pipe (7) is coaxially provided on the vertical center line of the electrolysis gas production and pore water collection and storage module (1) and the integrated EXG electrode (4). The drainage pipe (7) passes through the slider-type insulating module (2).
3. The intelligent soil heavy metal pollution remediation device according to claim 1, characterized in that, The scraping assembly (5) includes an installation ring (51) fixedly installed at the bottom of the inner wall of the electrolysis gas production guide and pore water collection and storage guide module (1). The top of the installation ring (51) is symmetrically embedded with columns (52). The top of the installation ring (51) is rotatably connected between the two columns (52). The anti-corrosion screw (53) is rotatably connected between the top of the anti-corrosion screw (53) and the columns (52). Sleeves (54) are sleeved on the outside of both the anti-corrosion screw (53) and the columns (52). A moving ring (55) is connected between multiple sleeves (54). A scraping ring (56) is rotatably connected inside the moving ring (55). The scraping ring (56) is sleeved on the outer surface of the integrated EXG electrode (4). A positioning block (57) is connected between the top of the anti-corrosion screw (53) and the top of the columns (52).
4. The intelligent soil heavy metal pollution remediation device according to claim 3, characterized in that, The outer surface of the integrated EXG electrode (4) is provided with a protrusion, and the inner surface of the scraper ring (56) is provided with a positioning groove corresponding to the position of the protrusion.
5. The intelligent soil heavy metal pollution remediation device according to claim 4, characterized in that, The scraper ring (56) is fitted with a positioning ring (58) on its outer side. The outer surface of the positioning ring (58) is provided with a groove (59) in the circumferential direction. The moving ring (55) is provided with a matching groove (510) that matches the positioning ring (58) in the interior. The inner wall of the moving ring (55) is provided with a metal strip (511) in the circumferential direction at the position of the matching groove (510).
6. The intelligent soil heavy metal pollution remediation device according to claim 5, characterized in that, The rotating assembly (6) includes a gear ring (64) sleeved on the top of the integrated EXG electrode (4), a gear (63) meshing with the outer side of the gear ring (64), the gear (63) being sleeved on the outer side of the anti-corrosion screw (53), a speed-changing structure (61) being connected to the top of the gear (63), a drive member (62) being provided at the top of the speed-changing structure (61), the input end of the speed-changing structure (61) being connected to the output end of the drive member (62), and a guide ring (65) being welded to the top of the gear ring (64).
7. The intelligent soil heavy metal pollution remediation device according to claim 6, characterized in that, The output end of the speed change structure (61) is connected to the gear (63), and a guide groove is provided on the inner wall of the gear ring (64) at the protruding position on the outer surface of the integrated EXG electrode (4).
8. The intelligent soil heavy metal pollution remediation device according to claim 3, characterized in that, The inner wall of the electrolysis gas generation and pore water collection and storage module (1) is provided with a placement groove, and the mounting ring (51) is set inside the placement groove. The inner wall of the electrolysis gas generation and pore water collection and storage module (1) is provided with a flow guide hole near the outer surface of the placement groove.
9. The intelligent soil heavy metal pollution remediation device according to claim 6, characterized in that, The transmission structure (61) is composed of a protective shell, two sprockets and a chain. One sprocket is connected to the output shaft of the drive unit (62), and the other sprocket is connected to the gear (63). The diameter of the sprocket at the bottom of the drive unit (62) is smaller than the diameter of the other sprocket.
10. The intelligent soil heavy metal pollution remediation device according to claim 6, characterized in that, The top of the moving ring (55) and the scraper ring (56) are provided with inclined grooves. The end of the inclined groove near the integrated EXG electrode (4) is higher than the other end. The highest point of the sleeve (54) relative to the ground is higher than the highest point of the scraper ring (56) relative to the ground.