A groundwater pollution repair device capable of preventing blockage

Abstract

The present invention discloses a groundwater pollution remediation device capable of preventing blockage, and relates to the technical field of groundwater pollution remediation, comprising: a super-hydrophilic selective membrane assembly, which is vertically arranged in a groundwater flow channel and is used to intercept organic pollutants in groundwater; a sedimentation well is opened in the lower rock layer, the wellhead of the sedimentation well is connected to the groundwater flow channel and is close to the front end of the super-hydrophilic selective membrane assembly, and the organic pollutants can be deposited in the sedimentation well after being intercepted; one end of an extraction and purification mechanism is connected to the sedimentation well, and the other end is connected to a water purification mechanism, the water outlet end of the water purification mechanism is connected to the groundwater flow channel, and is located behind the super-hydrophilic selective membrane assembly. The super-hydrophilic selective membrane assembly can effectively intercept organic pollutants and allow groundwater to pass through, so the groundwater remediation process does not require a comprehensive closure of the groundwater contaminated area, the drainage system can operate normally, and the groundwater can be continuously repaired without affecting the hydraulic properties and stratum structure of the groundwater.

Description

Technical Field

[0001] The present invention relates to the technical field of groundwater pollution remediation, in particular to a groundwater pollution remediation device capable of preventing blockage. Background Art

[0002] There are many types of groundwater pollution, such as oil pollution, organic pollution caused by chemical discharge, and pollution caused by domestic waste discharge. When multiple pollution sources are concentrated in the same groundwater source, the combined contaminated groundwater is prone to pollutant migration and diffusion, and groundwater blockage.

[0003] Existing technologies typically use barrier and anti-seepage systems to completely seal off the contaminated area in case of combined groundwater contamination, preventing the migration and spread of pollutants. However, this treatment approach not only paralyzes drainage systems but also affects the hydraulic properties and stratum structure of the groundwater, and generally requires a long treatment cycle. Furthermore, complete sealing is equivalent to a disguised form of groundwater blockage, making existing technologies largely incapable of resolving the problem of groundwater blockage.

[0004] In view of this, how to provide a groundwater remediation device that avoids blockage, is highly efficient and does not affect the drainage system for combined contaminated groundwater is an urgent problem that needs to be solved by technical personnel in this field. Summary of the Invention

[0005] The purpose of the present invention is to provide a groundwater pollution repair device that can prevent clogging, so as to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned object, the present invention provides a groundwater pollution remediation device capable of preventing blockage, wherein a groundwater flow channel is located on the upper surface of a lower rock layer, and above the groundwater flow channel is an upper rock layer, comprising:

[0007] The super-hydrophilic selective membrane assembly is vertically arranged in the groundwater flow channel and can cover the longitudinal cross-section of the groundwater flow channel, with its upper end embedded in the upper rock layer and its lower end embedded in the lower rock layer. The super-hydrophilic selective membrane assembly is used to intercept organic pollutants in the groundwater;

[0008] A sedimentation well is opened in the lower rock layer, the wellhead of the sedimentation well is connected to the groundwater flow channel and is close to the front end of the super-hydrophilic selective membrane assembly, and the organic pollutants can be trapped and settled in the sedimentation well;

[0009] The extraction and purification mechanism is connected to the sedimentation well at one end and to the water purification mechanism at the other end. The water outlet of the water purification mechanism is connected to the groundwater flow channel and is located behind the super-hydrophilic selective membrane component.

[0010] Furthermore, the super-hydrophilic selective membrane assembly includes: an activated carbon filter layer, a super-hydrophilic selective membrane and a geotextile layer arranged in sequence; the upper and lower ends of the activated carbon filter layer, the super-hydrophilic selective membrane and the geotextile layer are provided with water-isolating connectors, and the two water-isolating connectors are respectively embedded in the upper rock layer and the lower rock layer.

[0011] Furthermore, the groundwater flow channel expands to both sides with the sedimentation well as the center to form two arc-shaped expansion parts, and an organic pollutant retention area is defined between the two arc-shaped expansion parts. The organic pollutant retention area separates the groundwater flow channel into a first flow channel and a second flow channel, and the first flow channel, the organic pollutant retention area and the second flow channel are connected in sequence; the super-hydrophilic selective membrane assembly is V-shaped, with the middle tip arranged near the inlet of the second flow channel, and the two ends extending toward the two arc-shaped expansion parts until they are connected with the arc-shaped expansion parts, and the sedimentation well is located between the outlet of the first flow channel and the super-hydrophilic selective membrane assembly.

[0012] Furthermore, it also includes:

[0013] a grid, provided at the outlet of the first flow channel, for intercepting domestic waste in the groundwater;

[0014] A sedimentation tank is provided in the lower rock layer, wherein the inlet of the sedimentation tank is connected to the first flow channel and is close to the front end of the grille. A movable collecting cylinder is placed in the sedimentation tank for collecting intercepted domestic waste. The top of the movable collecting cylinder is provided with an upper opening adapted to the inlet of the sedimentation tank, and the collecting cylinder is provided with a connecting ear near the upper opening.

[0015] A first vertical shaft is provided in the upper rock layer along the longitudinal direction, and the first vertical shaft corresponds to the position of the sedimentation tank.

[0016] Furthermore, the extraction and purification mechanism includes:

[0017] A sewage pipe, wherein a second vertical shaft is provided longitudinally through the upper rock layer, the second vertical shaft corresponds to the position of the sedimentation well, one end of the sewage pipe extends from the second vertical shaft into the sedimentation well and is close to the bottom of the sedimentation well, and the other end of the sewage pipe is led out from the top of the second vertical shaft and is connected to the water purification mechanism;

[0018] The sewage pump is arranged on the sewage pipe.

[0019] Furthermore, it also includes:

[0020] a closing mechanism disposed in the upper rock formation, the closing mechanism being movable in a vertical direction between a first position and a second position, wherein when the closing mechanism moves to the first position, one end of the closing mechanism is in communication with the bottom of the second vertical shaft, and the other end is in communication with the sedimentation shaft; and when the closing mechanism moves to the second position, the closing mechanism moves into the upper rock formation;

[0021] a water tank connected to the top of the second vertical shaft through a water inlet pipe, the diameter of the sewage pipe being smaller than the inner diameter of the second vertical shaft and the inner diameter of the sedimentation well, the other end of the sewage pipe being sealed and passing through the water inlet pipe and connected to the water purification mechanism;

[0022] A high-pressure water pump is arranged on the water inlet pipe.

[0023] Furthermore, the water tank is connected to the groundwater flow channel through a first water inlet pipe, the connection point is located behind the super-hydrophilic selective membrane component, and is connected to the water outlet end of the water purification mechanism through a second water inlet pipe.

[0024] Furthermore, the closing mechanism includes:

[0025] an inner cylinder, wherein an installation chamber is defined between the outer side of the second vertical shaft and the upper rock layer, and the inner cylinder is sleeved on the outer side of the second vertical shaft;

[0026] The outer cylinder is concentrically arranged with the inner cylinder and fixed to the upper rock layer;

[0027] A cylindrical sliding member, wherein a sliding chamber is defined between the outer cylindrical body and the inner cylindrical body, the cylindrical sliding member is adapted to the shape of the sliding chamber, is disposed in the sliding chamber and is slidably connected to the inner cylindrical body and the outer cylindrical body in a vertical direction;

[0028] a cylinder disposed in the installation chamber and fixed to the outer side of the upper rock layer and / or the second vertical shaft, wherein the output end of the cylinder extends downward and is connected to the cylindrical sliding member;

[0029] A connecting groove is provided on the bottom surface of the underground water flow channel. The cylinder can drive the cylindrical sliding member to slide between a first position and a second position. When the cylindrical sliding member is in the first position, the bottom of the cylindrical sliding member is inserted into the connecting groove and connects the second vertical shaft and the sedimentation shaft; when the cylindrical sliding member is in the second position, the cylindrical sliding member is located in the sliding chamber.

[0030] Furthermore, a sealing ring is provided at the bottom of the cylindrical sliding member.

[0031] Furthermore, the water outlet end of the water purification mechanism is close to the rear end of the super-hydrophilic selective membrane assembly and is inclined toward the direction of the super-hydrophilic selective membrane assembly.

[0032] The present invention discloses the following technical effects:

[0033] 1. The super-hydrophilic selective membrane components can effectively intercept organic pollutants and allow groundwater to pass through. Therefore, the groundwater remediation process does not require a complete closure of the groundwater contaminated area. The drainage system can operate normally, and the groundwater can be continuously remediated without affecting the hydraulic properties and stratum structure of the groundwater.

[0034] 2. In the groundwater flow channel, two arc-shaped expansion sections are formed, centered on the sedimentation well, expanding outward to form two sides. The two arc-shaped expansion sections define an organic pollutant retention zone, which can expand the longitudinal cross-sectional area of ​​the groundwater flow channel and forcibly change the flow direction of the groundwater. The expansion of the longitudinal and transverse areas helps reduce the groundwater flow rate and improve the retention of organic pollutants. The arc-shaped expansion section allows groundwater to flow in both directions. Combined with the V-shaped arrangement of the super-hydrophilic selective membrane assembly, the groundwater flowing in both directions can impact the outer surface of the super-hydrophilic selective membrane assembly at a smaller flow angle (the angle between the flow direction and the outer surface of the super-hydrophilic selective membrane assembly). When small particles of impurities clog the channel, they can be flushed away by groundwater, achieving a side-flushing effect and preventing clogging of the super-hydrophilic selective membrane assembly.

[0035] 3. A grille is set at the outlet of the first flow channel. The grille can intercept domestic waste in the groundwater and collect it using a sedimentation tank and a movable collection cylinder. A first vertical shaft is set in the upper rock layer corresponding to the sedimentation tank. The movable collection cylinder can be moved to the surface using a pull rope and sprocket structure. The collected domestic waste is cleaned regularly to avoid blockage of the groundwater flow channel.

[0036] 4. After being intercepted, organic pollutants naturally settle into the sedimentation well. They can then be pumped into the water purification system via sewage pipes and sewage pumps. After purification, the clean water is discharged back into the groundwater flow channel, effectively remediating organic contamination in the groundwater. In addition, the outlet of the water purification system is close to the rear end of the super-hydrophilic selective membrane module and is inclined in the direction of the super-hydrophilic selective membrane module. This can generate a clean water flow in the opposite direction of the groundwater flow, allowing the super-hydrophilic selective membrane module to be backwashed, further preventing clogging of the super-hydrophilic selective membrane module.

[0037] 5. The present invention is provided with a sealing mechanism, which can seal and connect the sedimentation well located in the lower rock layer with the second vertical shaft located in the upper rock layer. The above structure is used to introduce high-pressure water from the ground into the sedimentation well, thereby completely replacing the contaminated water in the sedimentation well. It can break through the limitations of the sewage pump and carry out repair work on deeper groundwater. Compared with the existing technology, it has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 It is a schematic diagram of the structure of the present invention;

[0040] Figure 2 This is a top view of the groundwater flow channel;

[0041] Figure 3 Schematic diagram of the structure of the superhydrophilic selective membrane module;

[0042] Figure 4 Schematic diagram of the closing mechanism;

[0043] Figure 5 This is a schematic diagram of the first vertical shaft;

[0044] Figure 6 It is a schematic diagram of the cooperation between the cylindrical sliding member and the connecting groove;

[0045] Figure 7 This is a schematic diagram of a sprocket mechanism pulling a movable collection barrel through a pull rope;

[0046] Among them, 1. groundwater flow channel; 101. first flow channel; 102. second flow channel; 103. arc-shaped expansion part; 104. organic pollutant retention area; 2. lower rock layer; 3. upper rock layer; 4. super-hydrophilic selective membrane component; 401. activated carbon filter layer; 402. super-hydrophilic selective membrane; 403. geotextile layer; 5. sedimentation well; 6. water purification mechanism; 7. grid; 8. sedimentation tank; 9. movable collection cylinder; 10. first vertical shaft; 1001. ladder; 1002. manhole cover; 11. sewage pipe; 12. second vertical shaft; 13. sewage pump; 14. closing mechanism; 1401. inner cylinder; 1402. outer cylinder; 1403. cylindrical sliding part; 1404. cylinder; 1405. connecting groove; 15. water tank; 16. high-pressure water pump; 17. sprocket mechanism; 18. pull rope. DETAILED DESCRIPTION

[0047] The above existing technologies all use barrier and anti-seepage systems to fully seal the groundwater contaminated area to prevent the migration and spread of pollutants, but fail to solve the technical problems described in the background technology.

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] like Figure 1-Figure 7 As shown, an embodiment of the present invention provides a groundwater pollution remediation device that can prevent blockage. The groundwater flow channel 1 is located on the upper surface of the lower rock layer 2, and the upper rock layer 3 is located above the groundwater flow channel 1. (The figure is only a schematic diagram of the upper rock layer 3 and the lower rock layer 2, and is not intended to limit the thickness of the upper rock layer 3 and the lower rock layer 2) The device includes:

[0051] The super-hydrophilic selective membrane assembly 4 is vertically arranged in the groundwater flow channel 1 and can cover the longitudinal cross-section of the groundwater flow channel 1. The upper end of the super-hydrophilic selective membrane assembly 4 is embedded in the upper rock layer 3 and the lower end is embedded in the lower rock layer 2. The super-hydrophilic selective membrane assembly 4 is used to intercept organic pollutants in the groundwater;

[0052] A sedimentation well 5 is opened in the lower rock layer 2. The wellhead of the sedimentation well 5 is connected to the groundwater flow channel 1 and is close to the front end of the super-hydrophilic selective membrane assembly 4. Organic pollutants can be trapped and settled in the sedimentation well 5.

[0053] The extraction and purification mechanism is connected to the sedimentation well 5 at one end and to the water purification mechanism 6 at the other end. The water outlet of the water purification mechanism 6 is connected to the groundwater flow channel 1 and is located behind the super-hydrophilic selective membrane assembly 4.

[0054] In this embodiment, the super-hydrophilic selective membrane assembly 4 comprises, in order: an activated carbon filter layer 401, a super-hydrophilic selective membrane 402, and a geotextile layer 403. Waterproof connectors are provided at the upper and lower ends of the activated carbon filter layer 401, the super-hydrophilic selective membrane 402, and the geotextile layer 403, respectively embedded in the upper rock layer 3 and the lower rock layer 2. The activated carbon filter layer 401 is composed of a non-woven fabric layer tightly packed with activated carbon granules. In other embodiments, the activated carbon filter layer 401 can be replaced with a layer of water-resistant material such as sand and gravel that is capable of retaining organic pollutants.

[0055] Superhydrophilic selective membrane 402 is a membrane material with a surface contact angle of less than 10°. It allows water to spread rapidly and preferentially pass through its surface, while also selectively separating other substances such as oil and organic compounds. This embodiment utilizes the selective separation capability of superhydrophilic selective membrane 402 for organic pollutants to intercept organic pollutants in groundwater at the front end.

[0056] In this embodiment, the groundwater flow channel 1 expands to both sides with the sedimentation well 5 as the center to form two arc-shaped expansion parts 103, and a circular organic pollutant retention area 104 is defined between the two arc-shaped expansion parts 103. The organic pollutant retention area 104 separates the groundwater flow channel 1 into a first flow channel 101 and a second flow channel 102. The first flow channel 101, the organic pollutant retention area 104 and the second flow channel 102 are connected in sequence, and the groundwater flows from the first flow channel 101 to the second flow channel 102; the super-hydrophilic selective membrane component 4 is V-shaped, with the tip of the middle part arranged near the inlet of the second flow channel 102, and the two ends extend toward the two arc-shaped expansion parts 103 until they are connected with the arc-shaped expansion parts 103, and the sedimentation well 5 is located between the outlet of the first flow channel 101 and the super-hydrophilic selective membrane component 4.

[0057] When groundwater flows through the organic pollutant retention area 104, the groundwater near the edge flows to both sides. When the groundwater flows to the widest position of the organic pollutant retention area 104, it begins to flow from both sides to the inside. The setting of the super-hydrophilic selective membrane component 4 can be as close as possible to the inner side of the arc-shaped expansion part 103, so that the groundwater impacts the super-hydrophilic selective membrane component 4 at a smaller flow angle.

[0058] In this embodiment, it also includes:

[0059] The grid 7 is provided at the outlet of the first flow channel 101 and is used to intercept domestic waste in the groundwater, and can also intercept large-sized and large-particle impurities such as tree branches;

[0060] A sedimentation tank 8 is provided in the lower rock layer 2. The inlet of the sedimentation tank 8 is connected to the first flow channel 101 and is close to the front end of the grille 7. A movable collecting cylinder 9 is placed in the sedimentation tank 8 for collecting the intercepted domestic waste. The movable collecting cylinder 9 is made of a waterproof, corrosion-resistant, and wear-resistant material. An upper opening is provided on the top thereof to match the inlet of the sedimentation tank 8. A connecting ear is provided near the upper opening of the collecting cylinder.

[0061] The first vertical shaft 10 is provided in the upper rock layer 3 along the longitudinal direction, and the first vertical shaft 10 corresponds to the position of the sedimentation tank 8.

[0062] In this embodiment, a pull rope 18 is connected to the connecting ear, and a ladder 1001 is provided in the first vertical shaft 10. One end of the pull rope 18 can always remain connected to the connecting ear, and the other end of the pull rope 18 can be wrapped around the ladder 1001. The pull rope 18 is long enough to facilitate the operator to remove the pull rope 18 from the first vertical shaft 10. A manhole cover 1002 is provided at the top of the first vertical shaft 10. The manhole cover 1002 can be removed and a sprocket mechanism 17 is provided at the wellhead. The other end of the pull rope 18 is connected to the sprocket mechanism 17 to move the movable collection barrel 9 from the sedimentation tank 8 to the ground, and the domestic waste in the movable collection barrel 9 can be regularly cleaned. The inner diameter of the first vertical shaft 10 is required to be larger than the outer diameter of the collection barrel to prevent the movable collection barrel 9 from getting stuck in the first vertical shaft 10 during movement.

[0063] In this embodiment, the extraction and purification mechanism includes:

[0064] A sewage pipe 11 is provided with a second vertical shaft 12 running through the upper rock layer 3 in the longitudinal direction. The second vertical shaft 12 corresponds to the position of the sedimentation well 5. One end of the sewage pipe 11 extends from the second vertical shaft 12 into the sedimentation well 5 and approaches the bottom of the sedimentation well 5. The other end of the sewage pipe 11 is led out from the top of the second vertical shaft 12 and communicates with the water purification mechanism 6.

[0065] The sewage pump 13 is installed on the sewage pipe 11. Since organic pollutants are trapped and settled in the sedimentation well 5, a relatively large amount of organic pollutants will accumulate at the bottom of the sedimentation well 5. The sewage pump 13 can be used to pump sewage containing organic pollutants from the sedimentation well 5 to the water purification mechanism 6. After the organic pollutants are removed, the purified water (referring to water that meets discharge standards, not specifically drinking water standards) is discharged into the groundwater flow channel 1.

[0066] In this embodiment, it also includes:

[0067] The closing mechanism 14 is disposed in the upper rock layer 3 and is movable in a vertical direction between a first position and a second position. When the closing mechanism 14 moves to the first position, one end of the closing mechanism 14 is in communication with the bottom of the second vertical shaft 12, and the other end is in communication with the sedimentation well 5. When the closing mechanism 14 moves to the second position, the closing mechanism 14 moves into the upper rock layer 3.

[0068] The water tank 15 is connected to the top of the second vertical shaft 12 through the water inlet pipe. The diameter of the sewage pipe 11 is smaller than the inner diameter of the second vertical shaft 12 and the inner diameter of the sedimentation well 5. The other end of the sewage pipe 11 is sealed and penetrates the water inlet pipe and is connected to the water purification mechanism 6.

[0069] The high-pressure water pump 16 is arranged on the water inlet pipe.

[0070] In this embodiment, the water tank 15 is connected to the groundwater channel 1 through a first water inlet pipe, the connection point is located behind the super-hydrophilic selective membrane assembly 4, and is connected to the water outlet end of the water purification mechanism 6 through a second water inlet pipe.

[0071] In this embodiment, the closing mechanism 14 includes:

[0072] The inner cylinder 1401 defines an installation chamber between the outer side of the second vertical shaft 12 and the upper rock layer 3, and the inner cylinder 1401 is sleeved on the outer side of the second vertical shaft 12;

[0073] The outer cylinder 1402 is concentrically arranged with the inner cylinder 1401 and fixed to the upper rock layer 3;

[0074] The cylindrical sliding member 1403 defines a sliding chamber between the outer cylindrical body 1402 and the inner cylindrical body 1401. The cylindrical sliding member 1403 is adapted to the shape of the sliding chamber. The cylindrical sliding member 1403 is disposed in the sliding chamber and is slidably connected to the inner cylindrical body 1401 and the outer cylindrical body 1402 in a vertical direction.

[0075] The cylinder 1404 is disposed in the installation chamber and fixed to the outer side of the upper rock layer 3 and / or the second vertical shaft 12. The output end of the cylinder 1404 extends downward and is connected to the cylindrical sliding member 1403.

[0076] The connecting groove 1405 is opened on the bottom surface of the underground water flow channel 1. The cylinder 1404 can drive the cylindrical sliding member 1403 to slide between the first position and the second position. When the cylindrical sliding member 1403 is in the first position, the bottom of the cylindrical sliding member 1403 is inserted into the connecting groove 1405 and connects the second vertical shaft 12 and the sedimentation well 5; when the cylindrical sliding member 1403 is in the second position, the cylindrical sliding member 1403 is located in the sliding chamber.

[0077] When the cylindrical sliding member 1403 moves to the first position, the bottom of the cylindrical sliding member 1403 is limited by the connecting groove 1405. Therefore, when the high-pressure water pump 16 injects water into the second vertical shaft 12, the connecting groove 1405, the inner cylinder 1401 and the outer cylinder 1402 can fully support the cylindrical sliding member 1403 to prevent the cylindrical sliding member 1403 from being displaced by the high water pressure.

[0078] In this embodiment, a sealing ring is provided at the bottom of the cylindrical slider 1403. This sealing ring serves two purposes. When the cylindrical slider 1403 engages with the connecting groove 1405, the sealing ring is squeezed and deformed to fill the gap between the cylindrical slider 1403 and the connecting groove 1405, preventing water from entering the connecting groove 1405 and affecting the connection. However, it should be noted that when the cylindrical slider 1403 engages with the connecting groove 1405, even if groundwater enters the sedimentation well 5, it will not affect subsequent sewage drainage operations. When the cylindrical slider 1403 moves to the second position, the sealing ring prevents groundwater from entering the sliding chamber and corroding the equipment.

[0079] In this embodiment, the outlet end of the water purification mechanism 6 is close to the rear end of the super-hydrophilic selective membrane assembly 4 and is inclined toward the super-hydrophilic selective membrane assembly 4. The outlet end of the water purification mechanism 6 can output purified water and backwash the rear end of the super-hydrophilic selective membrane assembly 4, further preventing clogging of the super-hydrophilic selective membrane assembly 4.

[0080] The overall working process is as follows:

[0081] 1. Groundwater flows along the first flow channel 101. When it flows to the outlet of the first flow channel 101, large-sized and large-particle impurities in the groundwater are intercepted by the grid 7 structure and settle into the movable collection cylinder 9 at the front end of the grid 7.

[0082] The groundwater continues to flow, entering the organic pollutant retention zone 104. Groundwater near the outer side of the groundwater flow channel 1 moves toward the sides of the organic pollutant retention zone 104. When it reaches the widest point of the organic pollutant retention zone 104 (i.e., the linear position of the sedimentation well 5, which is the maximum outer diameter of the organic pollutant retention zone 104), it begins to flow inward from both sides, impacting the super-hydrophilic selective permeation membrane assembly 4 at a small flow angle. Small particles of impurities on the surface of the super-hydrophilic selective permeation membrane assembly 4 are washed away by the groundwater and fall into the groundwater flow channel 1, ultimately settling into the sedimentation well 5. Organic pollutants in the groundwater are also trapped by the super-hydrophilic selective permeation membrane assembly 4. Furthermore, the V-shaped super-hydrophilic selective permeation membrane assembly 4 facilitates the rapid entry of trapped organic pollutants into the sedimentation well 5 via reflected flow. Organic pollutants undergo a natural attenuation process in the sedimentation well 5, which involves biodegradation, chemical reactions, and other factors. The specific settling process of organic pollutants in the sedimentation well 5 is known in the art and will not be further described here.

[0083] After the organic pollutants are intercepted, the groundwater passes through the membrane assembly 4 through the super-hydrophilic selectivity and continues to flow along the second flow channel 102 .

[0084] 2. When it is necessary to extract the sewage in the sedimentation well 5, if the depth of the groundwater flow channel 1 is relatively shallow, the sewage pump 13 can be directly turned on to pump the sewage in the sedimentation well 5 into the water purification mechanism 6 for treatment. The treated clean water is discharged into the groundwater flow channel 1 or into the water tank 15. The principle of treating organic pollutants by the water purification mechanism 6 belongs to the existing technology and will not be repeated here.

[0085] When the groundwater flow channel 1 is located in a deep stratum and the water pump is not sufficient to pump out the sewage in the sedimentation well 5, first start the cylinder 1404 and drive the cylindrical sliding member 1403 downward until the cylindrical sliding member 1403 is matched with the connecting groove 1405. At this time, the second vertical shaft 12 is connected to the sedimentation well 5 through the cylindrical sliding member 1403, and then start the high-pressure water pump 16. The high-pressure water enters the second vertical shaft 12 along the water inlet pipe, flows along the gap between the second vertical shaft 12 and the sewage pipe 11 to the sedimentation well 5, and continues to flow downward along the gap between the sedimentation well 5 and the sewage pipe 11.

[0086] Under the upward pressure of the high-pressure water, the sewage in the sedimentation well 5 enters the sewage pipe 11 from the bottom of the sedimentation well 5 and is then extracted into the water purification mechanism 6. After the sewage extraction and purification is completed, the cylinder 1404 returns the cylindrical slide 1403 to the second position, that is, to the sliding chamber.

[0087] 3. When the movable collection barrel 9 needs to be cleaned, the manhole cover 1002 of the first vertical shaft 10 is opened. The operator enters the first vertical shaft 10, removes the pull rope 18, and arranges the sprocket mechanism 17 at the wellhead of the first vertical shaft 10. The pull rope 18 is connected to the sprocket mechanism 17, and the sprocket mechanism 17 is activated. The movable collection barrel 9 is pulled upward until the movable collection barrel 9 is raised to the surface, and the movable collection barrel 9 is cleaned. After cleaning, the movable collection barrel 9 is lowered back into the sedimentation tank 8 (the movable collection barrel 9 has sufficient weight and density to ignore the buoyancy of the groundwater). The pull rope 18 is separated from the sprocket mechanism 17 and wrapped around the ladder 1001 near the wellhead of the first vertical shaft 10.

[0088] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0089] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A groundwater pollution remediation device capable of preventing clogging, wherein a groundwater flow channel (1) is located on the upper surface of a lower rock layer (2), and above the groundwater flow channel (1) is an upper rock layer (3), characterized in that: include: A super-hydrophilic selective membrane assembly (4) is vertically arranged in the groundwater flow channel (1) and is capable of covering the longitudinal cross-section of the groundwater flow channel (1), wherein the upper end is embedded in the upper rock layer (3) and the lower end is embedded in the lower rock layer (2). The super-hydrophilic selective membrane assembly (4) is used to intercept organic pollutants in the groundwater; A sedimentation well (5) is opened in the lower rock layer (2), the wellhead of the sedimentation well (5) is connected to the groundwater flow channel (1) and is close to the front end of the super-hydrophilic selective membrane component (4), and the organic pollutants can be trapped and settled in the sedimentation well (5); An extraction and purification mechanism, one end of which is connected to the sedimentation well (5) and the other end of which is connected to the water purification mechanism (6); the water outlet of the water purification mechanism (6) is connected to the groundwater flow channel (1) and is located behind the super-hydrophilic selective membrane assembly (4); The super-hydrophilic selective membrane assembly (4) comprises: an activated carbon filter layer (401), a super-hydrophilic selective membrane (402) and a geotextile layer (403) arranged in sequence; the upper and lower ends of the activated carbon filter layer (401), the super-hydrophilic selective membrane (402) and the geotextile layer (403) are provided with water-isolating connectors, and the two water-isolating connectors are respectively embedded in the upper rock layer (3) and the lower rock layer (2); The groundwater flow channel (1) expands toward both sides with the sedimentation well (5) as the center to form two arc-shaped expansion parts (103), and an organic pollutant retention area (104) is defined between the two arc-shaped expansion parts (103). The organic pollutant retention area (104) separates the groundwater flow channel (1) into a first flow channel (101) and a second flow channel (102), and the first flow channel (101), the organic pollutant retention area (104) and the second flow channel (102) are connected in sequence; the super-hydrophilic selective membrane assembly (4) is V-shaped, with the tip of the middle part being arranged close to the inlet of the second flow channel (102), and the two ends extending toward the two arc-shaped expansion parts (103) until they are connected to the arc-shaped expansion parts (103), and the sedimentation well (5) is located between the outlet of the first flow channel (101) and the super-hydrophilic selective membrane assembly (4).

2. The groundwater pollution remediation device capable of preventing clogging according to claim 1 is characterized in that: Also includes: A grid (7) is provided at the outlet of the first flow channel (101) and is used to intercept domestic waste in the groundwater; A sedimentation tank (8) is provided in the lower rock layer (2), wherein the port of the sedimentation tank (8) is connected to the first flow channel (101) and is close to the front end of the grid (7), and a movable collecting cylinder (9) is placed in the sedimentation tank (8) for collecting intercepted domestic waste. The top of the movable collecting cylinder (9) is provided with an upper opening adapted to the port of the sedimentation tank (8), and the collecting cylinder is provided with a connecting ear near the upper opening; A first vertical shaft (10) is provided in the upper rock layer (3) along the longitudinal direction, and the first vertical shaft (10) corresponds to the position of the sedimentation tank (8).

3. The groundwater pollution remediation device capable of preventing clogging according to claim 1 is characterized in that: The extraction and purification mechanism comprises: A sewage pipe (11), wherein a second vertical shaft (12) is provided through the upper rock layer (3) in the longitudinal direction, wherein the second vertical shaft (12) corresponds to the position of the sedimentation well (5), one end of the sewage pipe (11) extends from the second vertical shaft (12) into the sedimentation well (5) and is close to the bottom of the sedimentation well (5), and the other end of the sewage pipe (11) is led out from the top of the second vertical shaft (12) and is connected to the water purification mechanism (6); The sewage pump (13) is arranged on the sewage pipe (11).

4. The groundwater pollution remediation device capable of preventing clogging according to claim 3 is characterized in that: Also includes: A closing mechanism (14) is provided in the upper rock layer (3), and the closing mechanism (14) is movable in a vertical direction between a first position and a second position. When the closing mechanism (14) moves to the first position, one end of the closing mechanism (14) is in communication with the bottom of the second vertical shaft (12), and the other end is in communication with the sedimentation shaft (5); when the closing mechanism (14) moves to the second position, the closing mechanism (14) moves into the upper rock layer (3); The water tank (15) is connected to the top of the second vertical shaft (12) through the water inlet pipe. The diameter of the sewage pipe (11) is smaller than the inner diameter of the second vertical shaft (12) and the inner diameter of the sedimentation well (5). The other end of the sewage pipe (11) is sealed and penetrates the water inlet pipe and is connected to the water purification mechanism (6). A high-pressure water pump (16) is arranged on the water inlet pipe.

5. The groundwater pollution remediation device capable of preventing clogging according to claim 4 is characterized in that: The water tank (15) is connected to the underground water channel (1) through a first water inlet pipe, the connection point is located behind the super-hydrophilic selective membrane assembly (4), and is connected to the water outlet of the water purification mechanism (6) through a second water inlet pipe.

6. The groundwater pollution remediation device capable of preventing clogging according to claim 4 is characterized in that: The closing mechanism (14) comprises: An inner cylinder (1401), an installation chamber is defined between the outer side of the second vertical shaft (12) and the upper rock layer (3), and the inner cylinder (1401) is sleeved on the outer side of the second vertical shaft (12); The outer cylinder (1402) is concentrically arranged with the inner cylinder (1401) and fixed to the upper rock layer (3); A cylindrical sliding member (1403), wherein a sliding chamber is defined between the outer cylindrical body (1402) and the inner cylindrical body (1401), and the cylindrical sliding member (1403) is adapted to the shape of the sliding chamber, is disposed in the sliding chamber, and is slidably connected to the inner cylindrical body (1401) and the outer cylindrical body (1402) in a vertical direction; A cylinder (1404) is arranged in the installation chamber and fixed to the outer side of the upper rock layer (3) and / or the second vertical shaft (12), and the output end of the cylinder (1404) extends downward and is connected to the cylindrical sliding member (1403); The connecting groove (1405) is provided on the bottom surface of the underground water flow channel (1), and the cylinder (1404) can drive the cylindrical sliding member (1403) to slide between a first position and a second position. When the cylindrical sliding member (1403) is located at the first position, the bottom of the cylindrical sliding member (1403) is inserted into the connecting groove (1405) and connects the second vertical shaft (12) and the sedimentation shaft (5); when the cylindrical sliding member (1403) is at the second position, the cylindrical sliding member (1403) is located in the sliding chamber.

7. The groundwater pollution remediation device capable of preventing clogging according to claim 6, characterized in that: A sealing ring is provided at the bottom of the cylindrical sliding member (1403).

8. The groundwater pollution remediation device capable of preventing clogging according to claim 1 is characterized in that: The water outlet end of the water purification mechanism (6) is close to the rear end of the super-hydrophilic selective membrane assembly (4) and is inclined in the direction of the super-hydrophilic selective membrane assembly (4).

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