Novel single well circulation underground heat exchange system capable of treating underground water pollution

Abstract

The invention discloses a novel single-well circulation underground heat exchange system capable of treating underground water pollution, and belongs to the technical field of geothermal energy utilization and environmental engineering, the novel single-well circulation underground heat exchange system comprises a single-well circulation underground heat exchange mechanism, a water purification mechanism and a detection mechanism which are communicated in sequence, and the single-well circulation underground heat exchange mechanism comprises a shaft and a submersible pump arranged in the shaft; the shaft is provided with an upper connecting pipe and a lower connecting pipe, the submersible pump is located in the upper connecting pipe, the upper connecting pipe and the lower connecting pipe are communicated through a reversing flow guide connector, and the submersible pump is communicated with the water purification mechanism through a water feeding pipeline and a water inlet pipe. Compared with a traditional single-well circulation geothermal heat exchange system, the system has the advantages of being low in installation cost, small in space requirement, relatively high in efficiency and the like, the water purification mechanism and the water purification effect detection mechanism are additionally arranged, protection of underground water is emphasized under the condition that geothermal energy is efficiently utilized, sustainability of water resources is ensured, and the system is suitable for popularization and application. And the health of an ecological system is maintained.

Description

Technical Field

[0001] The present invention belongs to the field of geothermal energy utilization and environmental engineering technology, and in particular relates to a novel single-well circulation underground heat exchange system capable of treating groundwater pollution. Background Art

[0002] The single-well circulation heat exchange system (SWCHS), a core technology for shallow geothermal energy development, achieves groundwater circulation and heat exchange through pumping and injection from the same well. It has been widely used in building energy supply (e.g., patent CN202222171150.1). Its typical structure includes a pumping pipe, a re-injection pipe, and a heat exchanger assembly, achieving heat exchange through a closed groundwater circulation system. However, existing system designs focus on improving heat transfer efficiency (e.g., optimizing well pipe layout and improving filter pipe structure), without considering the impact of operation on the groundwater environment. Traditional groundwater pollution control technologies, such as extraction and treatment, can remove pollutants through physical and chemical treatment (see Environmental Science & Technology, 2020), but they suffer from high energy consumption (accounting for approximately 35-50% of total costs) and long treatment cycles (typically lasting decades). While in-situ remediation technologies reduce energy consumption, their efficiency is significantly constrained by hydrogeological conditions and competes with geothermal development systems. At present, shallow geothermal development and pollution control are in a state of technical separation, which is manifested in the following ways: (1) The operation of SWHE system accelerates pollution and migration: the change of pumping and injection water dynamic field leads to the expansion of pollutant diffusion range; (2) Traditional remediation technology is incompatible with geothermal development: for example, conventional P&T system requires independent treatment unit, which increases the system area by more than 40% and cannot realize energy recovery; (3) Lack of complex functions: Although the existing improved SWHE has added water quality monitoring module, it lacks active remediation mechanism and cannot block the cross-layer migration of pollutants. Summary of the Invention

[0003] The purpose of the present invention is to provide a new single-well circulation underground heat exchange system that can treat groundwater pollution, so as to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a new single-well circulation underground heat exchange system that can control groundwater pollution, including a single-well circulation underground heat exchange mechanism, a water purification mechanism and a detection mechanism that are connected in sequence. The single-well circulation underground heat exchange mechanism includes a wellbore and a submersible pump arranged in the wellbore, an upper connecting pipe and a lower connecting pipe of the wellbore, and the submersible pump is located in the upper connecting pipe. The upper connecting pipe and the lower connecting pipe are connected through a reversing guide joint. The submersible pump is connected to the water purification mechanism through a water supply line and a water inlet pipe. The water purification mechanism includes a shell, and a flocculation tank and a filter box that are connected to each other are respectively provided in the shell. The water inlet pipe is connected to the flocculation tank, and a filtering mechanism is provided in the filter box. The filter box is connected to the detection mechanism through an outlet pipe.

[0005] Preferably, the upper connecting pipe includes an upper outer sleeve and an upper inner sleeve, the upper inner sleeve is located inside the upper outer sleeve, an upper flow channel is formed between the upper inner sleeve and the upper outer sleeve, the upper flow channel and the upper inner sleeve are respectively connected to the reversing guide joint, the bottom of the upper flow channel is connected to a return pipeline, and the submersible pump is located at the bottom of the upper inner sleeve.

[0006] Preferably, the lower connecting pipe includes a lower outer sleeve arranged at the bottom of the reversing guide joint, the top of the lower inner sleeve is provided in the lower outer sleeve, a lower flow channel is provided between the lower outer sleeve and the lower inner sleeve, the lower flow channel and the top of the lower inner sleeve are respectively connected to the reversing guide joint, the bottom of the lower inner sleeve is provided with a plurality of water outlet sieve holes arranged in a matrix, and the bottom of the lower outer sleeve is provided with a plurality of water inlet sieve holes arranged in a matrix.

[0007] Preferably, a first guide channel and a second guide channel are respectively provided in the reversing guide joint, the first guide channel is respectively communicated with the upper inner sleeve and the lower flow channel, and the second guide channel is respectively communicated with the upper flow channel and the lower inner sleeve.

[0008] Preferably, the top of the upper flow channel is detachably connected to an annular manhole cover, and the return water pipeline passes through the annular manhole cover.

[0009] Preferably, a motor is provided on the top of the flocculation tank, the output shaft of the motor extends into the flocculation tank and is fixedly connected to a rotating shaft, a plurality of stirring rods are fixedly connected to the rotating shaft at equal intervals, a dosing pipe is provided on the top of the flocculation tank, the top of the dosing pipe extends to the outside of the shell and is installed with a cover, a sewage pipe is provided at the bottom of the flocculation tank, and a solenoid valve is provided on the sewage pipe.

[0010] Preferably, the filtering mechanism includes filter frames symmetrically arranged in the filter box, a filter cloth and an activated carbon adsorption layer are provided between the two filter frames, and the filter frame located on the top of the filter box is movably connected to the top surface of the filter box through a mounting seat.

[0011] Preferably, a rectangular through hole is provided on the top surface of the filter box, the mounting seat is located in the rectangular through hole, a groove is provided in the mounting seat, a telescopic component is installed in the groove, one end of the telescopic component is fixedly connected to a movable component, and a card slot is provided on the side of the rectangular through hole away from the telescopic component, and the card slot is adapted to the movable component.

[0012] Preferably, the movable component includes a movable plate fixed to the telescopic component, the end of the movable plate away from the telescopic component is fixed with a trapezoidal block, the top surface of the movable plate is fixed with a connecting block, the top surface of the connecting block is fixed with a pull plate, and a pull groove is provided in the pull plate.

[0013] Preferably, the detection mechanism includes a spiked water tank connected to the water outlet pipe, the spiked water tank is sequentially connected to a water inlet solenoid valve, a pre-filter element, a second booster pump, and a reverse osmosis filter element, and the reverse osmosis filter element is respectively connected to a clean water pipe and a wastewater pipe.

[0014] The present invention discloses the following technical effects: Compared with traditional single-well circulation geothermal heat exchange systems, the present invention has the advantages of lower installation costs, smaller space requirements, and relatively higher efficiency. In addition, the present invention adds a water purification mechanism and a water purification effect detection mechanism. While efficiently utilizing geothermal energy, it focuses on the protection of groundwater, ensuring the sustainability of water resources and maintaining the health of the ecosystem. The water purification mechanism improves water purification efficiency through the integrated design of flocculation and multi-stage filtration. At the same time, the detection mechanism can continuously detect the operating status of the water purification equipment and water quality changes, and timely warn of abnormalities, realizing dynamic monitoring of water purification efficiency and safety protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0016] Figure 1 This is a schematic structural diagram of a novel single-well circulation underground heat exchange system for treating groundwater pollution according to the present invention;

[0017] Figure 2 For the present invention Figure 1 A partial enlarged view of middle A;

[0018] Figure 3 This is a schematic structural diagram of the reversing flow guide joint of the present invention;

[0019] Figure 4 This is a schematic structural diagram of a single-well circulation underground heat exchange mechanism of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the water purification mechanism of the present invention;

[0021] Figure 6 It is a structural schematic diagram of the detection mechanism of the present invention.

[0022] In the figure: 1. Water supply line; 2. Return line; 3. First booster pump; 4. Annular manhole cover; 5. Upper inner casing; 6. Upper outer casing; 7. Upper flow channel; 8. Submersible pump; 9. First diversion channel; 10. Second diversion channel; 11. Reversing diversion joint; 12. Water inlet sieve hole; 13. Lower inner casing; 14. Lower outer casing; 15. Water outlet sieve hole; 16. Lower flow channel; 17. Heat pump; 18. Dosing pipe; 19. Cover; 20. Motor; 21. Mounting base; 22. Water inlet pipe; 23. Rotating shaft; 24. Agitator rod; 25. Drain pipe; 26. Solenoid valve; 27. Flocculation tank; 28. Housing; 29. ​​Chute; 30 , pump; 31. filter box; 32. filter frame; 33. connecting pipe; 34. outlet pipe; 35. filter cloth; 36. activated carbon adsorption layer; 37. spiked water tank; 38. water inlet flow meter; 39. pressure gauge; 40. water inlet solenoid valve; 41. main control system; 42. power off switch; 43. wastewater flow meter; 44. wastewater pipeline; 45. second booster pump; 46. pre-filter element; 47. reverse osmosis filter element; 48. water purification flow meter; 49. water purification pipeline; 50. connecting block; 51. pull groove; 52. pull plate; 54. rectangular through hole; 55. card slot; 56. trapezoidal card block; 57. telescopic component; 58. groove; 59. movable plate. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] Reference Figures 1-6As shown, this embodiment provides a novel single-well circulation underground heat exchange system capable of treating groundwater pollution, comprising a single-well circulation underground heat exchange mechanism, a water purification mechanism and a detection mechanism connected in sequence. The single-well circulation underground heat exchange mechanism comprises a wellbore and a submersible pump 8 arranged in the wellbore, an upper connecting pipe 33 and a lower connecting pipe 33 of the wellbore, the submersible pump 8 is located in the upper connecting pipe 33, and the upper connecting pipe 33 and the lower connecting pipe 33 are connected through a reversing guide joint 11. The submersible pump 8 is connected to the water purification mechanism through a water supply line 1 and a water inlet pipe 22. The water purification mechanism comprises a shell 28, and a flocculation tank 27 and a filter box 31 connected to each other are respectively provided in the shell 28. The water inlet pipe 22 is connected to the flocculation tank 27, and a filtering mechanism is provided in the filter box 31. The filter box 31 is connected to the detection mechanism through a water outlet pipe 34.

[0026] Compared to traditional single-well circulation geothermal heat exchange systems, this invention offers advantages such as lower installation costs, smaller space requirements, and relatively higher efficiency. Furthermore, it incorporates a water purification mechanism and a water purification effect detection mechanism. While efficiently utilizing geothermal energy, it also prioritizes groundwater protection, ensuring the sustainability of water resources and maintaining the health of the ecosystem. The water purification mechanism improves water purification efficiency through the integrated design of flocculation and multi-stage filtration. Furthermore, the detection mechanism continuously monitors the operating status of the water purification equipment and changes in water quality, providing timely warnings of anomalies and enabling dynamic monitoring and safety protection of water purification efficiency.

[0027] To further optimize the solution, the upper connecting pipe 33 includes an upper outer sleeve 6 and an upper inner sleeve 5. The upper inner sleeve 5 is located inside the upper outer sleeve 6. An upper flow channel 7 is formed between the upper inner sleeve 5 and the upper outer sleeve 6. The upper flow channel 7 and the upper inner sleeve 5 are respectively connected to the reversing guide joint 11. The bottom of the upper flow channel 7 is connected to the return pipeline 2, and the submersible pump 8 is located at the bottom of the upper inner sleeve 5.

[0028] Geothermal water is delivered via the water supply pipeline 1. The system uses an upper intake and lower recharge method to prevent the introduction of fine sand during water intake. The return water pipeline 2 and the first booster pump 3 increase the recharge water pressure, facilitating its delivery to deeper areas of the groundwater layer. A heat pump 17 is also installed on the return water pipeline 2.

[0029] To further optimize the solution, the lower connecting pipe 33 includes a lower outer sleeve 14 arranged at the bottom of the reversing guide joint 11, the top of the lower inner sleeve 13 is provided in the lower outer sleeve 14, a lower flow channel 16 is provided between the lower outer sleeve 14 and the lower inner sleeve 13, the lower flow channel 16 and the top of the lower inner sleeve 13 are respectively connected to the reversing guide joint 11, the bottom of the lower inner sleeve 13 is provided with a plurality of water outlet sieve holes 15 arranged in a matrix, and the bottom of the lower outer sleeve 14 is provided with a plurality of water inlet sieve holes 12 arranged in a matrix.

[0030] To further optimize the solution, a first guide channel 9 and a second guide channel 10 are respectively provided in the reversing guide joint 11, the first guide channel 9 is respectively connected to the upper inner sleeve 5 and the lower flow channel 16, and the second guide channel 10 is respectively connected to the upper flow channel 7 and the lower inner sleeve 13.

[0031] The water inlet sieve 12 and the water outlet sieve 15 are used for filtering and dispersing the water intake and recharge water, respectively. The system directly uses groundwater as the cold and heat source of the heat pump 17. In winter, the groundwater transfers energy to the refrigerant in the heat pump 17, causing the refrigerant to evaporate and absorb heat, thereby heating the building. In summer, the opposite is true. The heat pump 17 transfers the heat in the building to the groundwater, which carries the heat away through the groundwater to achieve cooling of the building. However, geothermal fluids usually contain a certain amount of minerals, such as chlorides, sulfides, and heavy metals. If these substances are not effectively treated, they may pollute groundwater resources. Therefore, a water purification mechanism is added, which is connected to the water supply pipeline 1 in the single-well circulation geothermal heat exchange mechanism through the water inlet pipe 22.

[0032] According to a further optimized solution, a circular manhole cover 4 is detachably connected to the top of the upper flow channel 7 , and the return water pipeline 2 passes through the circular manhole cover 4 .

[0033] To further optimize the solution, a motor 20 is provided on the top of the flocculation tank 27, the output shaft of the motor 20 extends into the flocculation tank 27 and is fixedly connected to a rotating shaft 23, a plurality of stirring rods 24 are fixedly connected to the rotating shaft 23 at equal intervals, a dosing pipe 18 is provided on the top of the flocculation tank 27, the top of the dosing pipe 18 extends to the outside of the shell 28 and is installed with a cover 19, a sewage pipe 25 is provided at the bottom of the flocculation tank 27, and a solenoid valve 26 is provided on the sewage pipe 25.

[0034] The motor 20 drives the rotating shaft 23 and the stirring rod 24 to fully mix the water and the reagent in the flocculation tank 27 to improve the flocculation efficiency. The flocculated water is then transported to the filter box 31 by the pump. The filter cloth 35 and the activated carbon adsorption layer 36 in the detachable filter frame 32 of the chute 29 are used to achieve physical interception and deep purification. The sewage pipe 25 is used to achieve controllable discharge of incoming water and precipitated impurities.

[0035] A further optimized solution is that the filtering mechanism includes filter frames 32 symmetrically arranged in the filter box 31, a filter cloth 35 and an activated carbon adsorption layer 36 are provided between the two filter frames 32, and the filter frame 32 located on the top of the filter box 31 is movably connected to the top surface of the filter box 31 through the mounting seat 21.

[0036] To further optimize the solution, a rectangular through hole 54 is provided on the top surface of the filter box 31, the mounting seat 21 is located in the rectangular through hole 54, a groove 58 is provided in the mounting seat 21, a telescopic component 57 is installed in the groove 58, one end of the telescopic component 57 is fixedly connected to a movable component, and a card slot 55 is provided on the side of the rectangular through hole 54 away from the telescopic component 57, and the card slot 55 is adapted to the movable component.

[0037] To further optimize the solution, the movable component includes a movable plate 59 fixed to the telescopic component 57, the end of the movable plate 59 away from the telescopic component 57 is fixed with a trapezoidal block 56, the top surface of the movable plate 59 is fixed with a connecting block 50, the top surface of the connecting block 50 is fixed with a pull plate 52, and a pull groove 51 is provided in the pull plate 52.

[0038] The sealing of the connection between the mounting seat 21 and the box body is ensured by a sealing gasket, and the locking or separation of the trapezoidal block 56 and the card slot 55 is controlled by the pull plate 52. In conjunction with the movable door of the shell 28 and the mounting port on the top of the filter box 31, the filter frame 32 can be quickly disassembled to maintain or replace the filter material. The overall integrated design takes into account both efficient processing and convenient operation, reducing the complexity of maintenance.

[0039] By pulling the pull plate 52, the movable plate 59 and the trapezoidal block 56 are disengaged from the slot 55. Combined with the design of the pull slot 51, the filter frame 32 can be unlocked and removed by lifting with one hand, making it easy to maintain the filter material. The housing 28 is equipped with an operation panel, a movable door handle, and bottom support legs to optimize human-machine interaction and device stability. In terms of operation, after the water is added and stirred, it is pumped into the filter box 31 by the pump. It is purified by the double-layer filter material and then discharged. Different types of filter cloth 35 can be selected to filter various impurities in different environments, enhancing the practicality of the device. During maintenance, the snap structure is released by pulling the pull plate 52, and the filter frame 32 can be directly lifted out for cleaning or replacement. The overall design enhances water purification efficiency and the convenience of modular maintenance. In addition, it is particularly important to measure the working effect of the water purification mechanism and the water purification effect that the water purification mechanism needs to achieve. By testing the working effect of the water purification mechanism, its water purification capacity can be guaranteed.

[0040] To further optimize the solution, the detection mechanism includes a spiked water tank 37 connected to the water outlet pipe 34. The spiked water tank 37 is connected in sequence to the water inlet solenoid valve 40, the pre-filter element 46, the second booster pump 45, and the reverse osmosis filter element 47. The reverse osmosis filter element 47 is respectively connected to the clean water pipe 49 and the waste water pipe 44. A water inlet flow meter 38 and a pressure gauge 39 are arranged in sequence between the spiked water tank 37 and the water inlet solenoid valve 40.

[0041] A water circuit is formed by sequentially connecting a pre-filter element 46, a second booster pump 45, and a reverse osmosis filter element 47 via a spiked water tank 37. The second booster pump 45 is located between the two filter stages. A wastewater flowmeter 43 is installed on the wastewater pipe 44, and a clean water flowmeter 48 is installed on the clean water pipe 49. The main control system 41 collects flow and pressure data in real time and calculates the pollutant removal rate. It adjusts the operating state by controlling the water inlet solenoid valve 40 and the second booster pump 45. When the measured value falls below a preset standard, a power-off switch 42 is triggered to force the system to shut down, thereby achieving dynamic monitoring of water purification efficiency and safety protection. The removal rate and clean water production rate are calculated according to a preset formula, and dynamic testing is performed at stages where the clean water volume reaches 0%, 25%, 50%, 75%, and 100% of the rated total volume. If the clean water flow rate or production rate falls below the target water efficiency level, the power-off switch 42 is triggered to terminate the test, achieving automated water efficiency performance evaluation and safety control.

[0042] 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.

[0043] 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 new single-well circulation underground heat exchange system for treating groundwater pollution, characterized by: The invention comprises a single-well circulation underground heat exchange mechanism, a water purification mechanism and a detection mechanism which are connected in sequence. The single-well circulation underground heat exchange mechanism comprises a wellbore and a submersible pump (8) arranged in the wellbore, an upper connecting pipe (33) and a lower connecting pipe (33) of the wellbore, the submersible pump (8) is located in the upper connecting pipe (33), the upper connecting pipe (33) and the lower connecting pipe (33) are connected through a reversing guide joint (11), the submersible pump (8) is connected to the water purification mechanism through a water supply line (1) and a water inlet pipe (22), the water purification mechanism comprises a shell (28), a flocculation tank (27) and a filter box (31) which are connected to each other are respectively provided in the shell (28), the water inlet pipe (22) is connected to the flocculation tank (27), the filter box (31) is provided with a filtering mechanism, and the filter box (31) is connected to the detection mechanism through a water outlet pipe (34).

2. The novel single-well circulation underground heat exchange system capable of treating groundwater pollution according to claim 1 is characterized in that: The upper connecting pipe (33) comprises an upper outer sleeve (6) and an upper inner sleeve (5), wherein the upper inner sleeve (5) is located inside the upper outer sleeve (6), and an upper flow channel (7) is formed between the upper inner sleeve (5) and the upper outer sleeve (6). The upper flow channel (7) and the upper inner sleeve (5) are respectively connected to the reversing flow guide joint (11), and the bottom of the upper flow channel (7) is connected to a return water pipeline (2), and the submersible pump (8) is located at the bottom of the upper inner sleeve (5).

3. The novel single-well circulation underground heat exchange system capable of treating groundwater pollution according to claim 2 is characterized by: The lower connecting pipe (33) comprises a lower outer sleeve (14) arranged at the bottom of the reversing flow guide joint (11); the top of the lower inner sleeve (13) is arranged in the lower outer sleeve (14); a lower flow channel (16) is provided between the lower outer sleeve (14) and the lower inner sleeve (13); the lower flow channel (16) and the top of the lower inner sleeve (13) are respectively communicated with the reversing flow guide joint (11); the bottom of the lower inner sleeve (13) is provided with a plurality of water outlet sieve holes (15) arranged in a matrix; and the bottom of the lower outer sleeve (14) is provided with a plurality of water inlet sieve holes (12) arranged in a matrix.

4. The novel single-well circulation underground heat exchange system capable of treating groundwater pollution according to claim 3 is characterized by: A first flow guide channel (9) and a second flow guide channel (10) are respectively provided in the reversing flow guide joint (11); the first flow guide channel (9) is respectively communicated with the upper inner sleeve (5) and the lower flow channel (16); and the second flow guide channel (10) is respectively communicated with the upper flow channel (7) and the lower inner sleeve (13).

5. The novel single-well circulation underground heat exchange system capable of treating groundwater pollution according to claim 2 is characterized by: The top of the upper flow channel (7) is detachably connected to an annular manhole cover (4), and the return water pipeline (2) passes through the annular manhole cover (4).

6. The novel single-well circulation underground heat exchange system capable of treating groundwater pollution according to claim 1 is characterized by: A motor (20) is provided on the top of the flocculation tank (27), the output shaft of the motor (20) extends into the flocculation tank (27) and is fixedly connected to a rotating shaft (23), a plurality of stirring rods (24) are fixedly connected to the rotating shaft (23) at equal intervals, a drug dosing pipe (18) is provided on the top of the flocculation tank (27), the top of the drug dosing pipe (18) extends to the outside of the shell (28) and is installed with a cover (19), a sewage pipe (25) is provided at the bottom of the flocculation tank (27), and a solenoid valve (26) is provided on the sewage pipe (25).

7. The novel single-well circulation underground heat exchange system capable of treating groundwater pollution according to claim 1 is characterized in that: The filtering mechanism comprises filter frames (32) symmetrically arranged in the filter box (31), a filter cloth (35) and an activated carbon adsorption layer (36) are provided between the two filter frames (32), and the filter frame (32) located on the top of the filter box (31) is movably connected to the top surface of the filter box (31) through a mounting seat (21).

8. The novel single-well circulation underground heat exchange system capable of treating groundwater pollution according to claim 7 is characterized in that: The top surface of the filter box (31) is provided with a rectangular through hole (54), the mounting seat (21) is located in the rectangular through hole (54), a groove (58) is provided in the mounting seat (21), a telescopic component (57) is installed in the groove (58), one end of the telescopic component (57) is fixedly connected to a movable component, and a card slot (55) is provided on the side of the rectangular through hole (54) away from the telescopic component (57), and the card slot (55) is adapted to the movable component.

9. The novel single-well circulation underground heat exchange system capable of treating groundwater pollution according to claim 8 is characterized in that: The movable assembly comprises a movable plate (59) fixedly connected to the telescopic assembly (57); one end of the movable plate (59) away from the telescopic assembly (57) is fixedly connected to a trapezoidal block (56); the top surface of the movable plate (59) is fixedly connected to a connecting block (50); the top surface of the connecting block (50) is fixedly connected to a pulling plate (52); and a pulling groove (51) is provided in the pulling plate (52).

10. The novel single-well circulation underground heat exchange system capable of treating groundwater pollution according to claim 1 is characterized in that: The detection mechanism includes a standard water tank (37) connected to the water outlet pipe (34), the standard water tank (37) is sequentially connected to a water inlet solenoid valve (40), a pre-filter element (46), a second booster pump (45), and a reverse osmosis filter element (47), and the reverse osmosis filter element (47) is respectively connected to a clean water pipeline (49) and a wastewater pipeline (44).

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