Underground water pollution prevention and control comprehensive device for coal mining area

Abstract

The utility model discloses a coal mining area groundwater pollution prevention and control comprehensive device which comprises a sewage treatment assembly, and the sewage treatment assembly comprises a water collecting well, a water outlet pipe, a filter box, a connecting pipe, an adsorption box, a drainage pipe, a water temperature sensor, a pH value sensor, a conductivity sensor, a pin shaft, a well lid, a sealing bin, a controller, a limiting frame and a water inlet pipe. Underground water is collected through the water collecting well, large-particle suspended solids, small-particle impurities and part of organic pollutants and heavy metal ions are sequentially filtered through the coarse filter screen, the fine filter screen and the activated carbon filter layer in the filter box, and then water is deeply purified through a special adsorbent in the adsorption box. Meanwhile, the underground water condition is monitored in real time by means of the water temperature sensor, the pH value sensor, the conductivity sensor and the water level sensor, the controller controls the electric valve and other components to work according to monitoring data, comprehensive and efficient prevention and control over underground water pollution in the coal mining area are achieved, and all the components are reasonable in structure and convenient to maintain and operate.

Description

Technical Field

[0001] This utility model belongs to the field of groundwater pollution prevention and control technology, and specifically relates to a comprehensive device for groundwater pollution prevention and control in coal mining areas. Background Technology

[0002] Coal mining can trigger a series of problems that threaten the groundwater environment. For example, the damage to the strata caused by coal mining may alter the hydraulic connection between aquifers, and harmful substances such as heavy metal ions and suspended solids carried out by mine drainage, as well as the acidification of mine water, can easily cause groundwater pollution.

[0003] Traditional prevention and control measures are often relatively simple and difficult to comprehensively and effectively control the complex groundwater pollution situation in coal mining areas. They cannot meet the current strict requirements for groundwater environmental protection in coal mining areas. Therefore, a comprehensive device for groundwater pollution prevention and control in coal mining areas is proposed. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies where single prevention and control measures are insufficient to address the complex groundwater pollution situation in coal mining areas. It provides a comprehensive groundwater pollution prevention and control device for coal mining areas that integrates multiple functions, can comprehensively and efficiently prevent and control groundwater pollution in coal mining areas, and features automated monitoring and control, and is easy to maintain and operate.

[0005] To achieve the above objectives, this utility model provides a comprehensive device for the prevention and control of groundwater pollution in coal mining areas, including a sewage treatment component. The sewage treatment component includes a collection well, an outlet pipe, a filter box, a connecting pipe, an adsorption box, a drainage pipe, a water temperature sensor, a pH sensor, a conductivity sensor, a pin, a well cover, a sealing chamber, a controller, a limit frame, a filter frame, and an inlet pipe.

[0006] The bottom of the front surface of the water collection well is connected to an outlet pipe. The end of the outlet pipe away from the water collection well is connected to a filter box. The middle of the front surface of the filter box is connected to a connecting pipe. The end of the connecting pipe away from the filter box is connected to an adsorption box. The middle of the front surface of the adsorption box is connected to a drain pipe. A water temperature sensor, a pH sensor, and a conductivity sensor are installed on the outer side wall of the drain pipe near the adsorption box. A well cover is hinged to the front of the upper surface of the water collection well by a pin. A sealing chamber is opened in the middle of the upper surface of the well cover. A controller is installed on the inner side wall of the sealing chamber. The output terminals of the water temperature sensor, pH sensor, and conductivity sensor are all electrically connected to the input terminal of the controller. A limit frame is provided on the upper part of the inner side wall of the water collection well. A filter frame is attached to the upper surface of the limit frame. An inlet pipe is connected to the upper part of the rear surface of the water collection well near the limit frame.

[0007] Preferably, the upper surface of the filter box is provided with three U-shaped slots, and the inner sidewalls of the three U-shaped slots are slidably connected with filter screen mounting frames. The inner sidewalls of the three filter screen mounting frames are sequentially installed with a coarse filter screen, a fine filter screen, and an activated carbon filter layer. A sealing plate is fixedly connected to the upper surface of the filter screen mounting frame, and the outer side of the lower surface of the sealing plate is fixedly connected to the outer side of the upper surface of the filter box near the U-shaped slots by multiple screws.

[0008] Preferably, a water level sensor is installed on one side of the inner wall of the water collection well, and the output terminal of the water level sensor is electrically connected to the input terminal of the controller.

[0009] Preferably, electric valves are installed on the outer walls of both the outlet pipe and the inlet pipe, and the input end of the electric valve is electrically connected to the output end of the controller.

[0010] Preferably, the adsorption box is filled with a special adsorbent.

[0011] Preferably, the controller has a display screen on the front of its upper surface and multiple waterproof buttons on the rear of its upper surface.

[0012] Preferably, handles are welded to the top of both sides of the inner sidewall of the filter frame.

[0013] Preferably, a handle is welded to the rear of the upper surface of the manhole cover.

[0014] The beneficial effects of this utility model are:

[0015] In use, this invention draws groundwater into a collection well via an inlet pipe, and then flows into a filter box via an outlet pipe. Inside the filter box, the groundwater undergoes multiple treatments: a coarse filter, a fine filter, and an activated carbon filter layer. (The coarse filter primarily removes large suspended particles, the fine filter further filters smaller particles, and the activated carbon filter adsorbs some organic pollutants and heavy metal ions, thus achieving initial purification.) The pre-purified groundwater then flows into an adsorption box, where a specialized adsorbent further purifies the water, removing residual pollutants and ensuring the water quality meets safety standards. Simultaneously, sensors for water temperature, pH, conductivity, and water level monitor key parameters such as temperature, pH, conductivity, and water level changes in real time. A controller then uses this monitoring data to operate electric valves and other components, thereby comprehensively improving the efficiency and effectiveness of groundwater pollution control in coal mining areas. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the comprehensive device for preventing and controlling groundwater pollution in coal mining areas according to this utility model.

[0017] Figure 2 This is a schematic diagram of the opening structure of the manhole cover of this utility model.

[0018] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the filter box and filter screen mounting frame structure of this utility model.

[0020] In the diagram: 1. Wastewater treatment component; 11. Collection well; 12. Outlet pipe; 13. Filter box; 14. Connecting pipe; 15. Adsorption box; 16. Drain pipe; 17. Water temperature sensor; 18. pH sensor; 19. Conductivity sensor; 20. Pin; 21. Well cover; 22. Sealing chamber; 23. Controller; 24. Limiting frame; 25. Filter frame; 26. Inlet pipe; 27. U-shaped slot; 28. Filter screen mounting frame; 29. ​​Coarse filter screen; 30. Fine filter screen; 31. Activated carbon filter layer; 32. Sealing plate; 33. Screw; 34. Water level sensor; 35. Electric valve; 36. Special adsorbent; 37. Display screen; 38. Waterproof button; 39. Handle; 40. Pull handle. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, specific orientation structure, or operation. Therefore, they should not be construed as limitations on this utility model.

[0023] This embodiment provides a comprehensive device for the prevention and control of groundwater pollution in coal mining areas, including a sewage treatment component 1. The sewage treatment component 1 includes a water collection well 11, an outlet pipe 12, a filter box 13, a connecting pipe 14, an adsorption box 15, a drainage pipe 16, a water temperature sensor 17, a pH sensor 18, a conductivity sensor 19, a pin 20, a well cover 21, a sealing chamber 22, a controller 23, a limit frame 24, a filter frame 25, and an inlet pipe 26.

[0024] A water outlet pipe 12 is connected to the bottom of the front surface of the water collection well 11. A filter box 13 is connected to the end of the water outlet pipe 12 furthest from the water collection well 11. A connecting pipe 14 is connected to the middle of the front surface of the filter box 13. An adsorption box 15 is connected to the end of the connecting pipe 14 furthest from the filter box 13. A drain pipe 16 is connected to the middle of the front surface of the adsorption box 15. A water temperature sensor 17, a pH sensor 18, and a conductivity sensor 19 are installed on the outer wall of the drain pipe 16 near the adsorption box 15. The upper surface of the water collection well 11... A well cover 21 is hinged to the front of the well via a pin 20. A sealing chamber 22 is provided in the middle of the upper surface of the well cover 21. A controller 23 is installed on the inner wall of the sealing chamber 22. The output terminals of the water temperature sensor 17, pH sensor 18 and conductivity sensor 19 are electrically connected to the input terminal of the controller 23. A limit frame 24 is provided on the upper part of the inner wall of the water collection well 11. A filter frame 25 is attached to the upper surface of the limit frame 24. A water inlet pipe 26 is connected to the upper part of the rear surface of the water collection well 11 near the limit frame 24.

[0025] The water collection well 11 serves as the starting point for collecting groundwater. Its front surface bottom is connected to the outlet pipe 12. This layout allows the groundwater in the water collection well 11 to flow naturally into the outlet pipe 12 under gravity, providing a water source for subsequent treatment processes. The end of the outlet pipe 12 furthest from the water collection well 11 is connected to the filter box 13, ensuring that the water flowing from the water collection well 11 can smoothly enter the filter box 13 for preliminary filtration. The middle of the front surface of the filter box 13 is connected to the adsorption box 15 via a connecting pipe 14. The water filtered by the filter box 13 enters the adsorption box 15 through the connecting pipe 14 for further deep purification. The front surface of the adsorption box 15... A drain pipe 16 is connected to the middle of the surface. The treated water, meeting the standards after passing through the adsorption tank 15, is discharged through the drain pipe 16, completing the entire wastewater treatment process. A water temperature sensor 17, a pH sensor 18, and a conductivity sensor 19 are installed on the outer wall of the drain pipe 16 near the adsorption tank 15. These sensors can monitor key water quality parameters accurately and promptly as the treated water is about to be discharged. The water temperature sensor 17 detects water temperature; changes in water temperature may reflect whether the groundwater is affected by thermal pollution or other temperature-related contamination. The pH sensor 18 measures the acidity or alkalinity of the water; abnormal pH values ​​may indicate the presence of acidity or alkalinity in the water. The water contains pollutants, which in coal mining areas may be caused by factors such as acidification of mine water. The conductivity sensor 19 can detect the conductivity of water to reflect the content of ions in the water, thereby indirectly determining the approximate situation of pollutants such as dissolved minerals and heavy metal ions in the water. The output terminals of these sensors are all electrically connected to the input terminals of the controller 23, so that the data monitored by the sensors can be transmitted to the controller 23 in real time, providing a basis for subsequent analysis and control. The hinged design of the manhole cover 21 facilitates the opening and closing of the water collection well 11, making it convenient for inspection, maintenance, and cleaning of the inside of the water collection well 11. The controller 23 is placed in the sealed compartment. Inside the sealed chamber 22, the controller 23 can be effectively protected from external environmental factors such as rain and dust, ensuring its normal operation. The sealed design of the sealed chamber 22 can also prevent the controller 23 from short-circuiting due to water ingress, thereby extending the service life of the controller 23 and ensuring the stable operation of the entire control device. The function of the limit frame 24 is to position and fix the filter frame 25, preventing the filter frame 25 from shifting within the water collection well 11. When groundwater enters the water collection well 11, the filter frame 25 can initially intercept larger particles of impurities and floating objects, reducing the working pressure of subsequent filtration units and extending the service life of the filtration equipment.

[0026] In one embodiment, specifically, the upper surface of the filter box 13 is provided with three U-shaped slots 27, and the inner sidewalls of the three U-shaped slots 27 are slidably connected with filter screen mounting frames 28. The inner sidewalls of the three filter screen mounting frames 28 are sequentially installed with a coarse filter screen 29, a fine filter screen 30, and an activated carbon filter layer 31. The upper surface of the filter screen mounting frame 28 is fixedly connected with a sealing plate 32, and the outer side of the lower surface of the sealing plate 32 is fixedly connected to the outer side of the upper surface of the filter box 13 near the U-shaped slots 27 by multiple screws 33. The design of the U-shaped slot 27 allows the filter mounting frame 28 to be easily inserted into or removed from the filter box 13 along the slot direction. This sliding connection facilitates the installation, disassembly, and replacement of the filter mounting frame 28. In actual use, when the filter needs cleaning or replacement, the operator only needs to pull the filter mounting frame 28 out of the U-shaped slot 27, without complicated tools or cumbersome disassembly steps, greatly improving maintenance efficiency. The inner walls of the three filter mounting frames 28 are sequentially fitted with a coarse filter 29, a fine filter 30, and an activated carbon filter layer 31, forming a multi-layered filtration system. The coarse filter 29, as the first line of defense, has a larger mesh size, which can... It can effectively intercept larger suspended particles in groundwater, such as coal slag and rock fragments. If these large particles are not removed beforehand, they may clog the subsequent fine filter screen 30 and activated carbon filter layer 31, affecting the filtration effect and equipment lifespan. The fine filter screen 30 has relatively small pores, which can further filter out smaller particles of impurities, such as silt, and improve filtration accuracy. The activated carbon filter layer 31 has a strong adsorption capacity. It can adsorb some organic pollutants and heavy metal ions in groundwater. The porous structure of activated carbon gives it a huge surface area, providing a large number of adsorption sites for pollutants, thereby effectively reducing the content of harmful substances in the water and further purifying the water quality.

[0027] In one embodiment, a water level sensor 34 is installed on one side of the inner wall of the collection well 11, and the output of the water level sensor 34 is electrically connected to the input of the controller 23. Through the coordinated operation of the water level sensor 34 and the controller 23, automated monitoring and control of the water level in the collection well 11 is achieved. The controller 23, as the control core of the entire control device, receives water level data and can analyze and judge it according to preset programs and thresholds. For example, when the water level reaches or exceeds the set upper limit, the controller 23 can control the opening and closing of the electric valve 35 and the opening degree, or adjust the sewage treatment components. Operating parameters are set to accelerate the treatment and discharge of groundwater, prevent the water collection well 11 from overflowing due to excessively high water levels, and avoid the spread of groundwater pollution to the surrounding environment. Conversely, when the water level is lower than the set lower limit, the controller 23 can control the shutdown of unnecessary equipment operation to save energy and reduce equipment wear. At the same time, it can also provide early warning of possible abnormal water level drops, prompting operators to check for groundwater leakage and other problems. This enables the comprehensive groundwater pollution prevention and control device in the entire coal mining area to operate more intelligently and efficiently, improve the ability to prevent and control groundwater pollution, and effectively protect the groundwater environment.

[0028] In one embodiment, electric valves 35 are installed on the outer walls of both the outlet pipe 12 and the inlet pipe 26. The input end of the electric valve 35 is electrically connected to the output end of the controller 23. The cooperation between the electric valve 35 and the controller 23 greatly improves the automation level of the integrated groundwater pollution prevention and control device in the coal mining area. By automatically controlling the inflow and outflow of water, the need for manual intervention is reduced, and the errors and delays that may be caused by manual operation are mitigated. The electric valve 35 itself has good sealing performance and reliability. Under normal working conditions, it can effectively prevent groundwater leakage and ensure the sealing and stability of the system. Moreover, when the system malfunctions or encounters abnormal situations, the controller 23 can take corresponding emergency measures by controlling the electric valve 35, such as urgently closing the inlet pipe 26 to prevent a large amount of polluted water from rushing in, or opening the outlet pipe 12 to drain the water in the collection well 11 for maintenance, thereby improving the ability of the entire prevention and control system to cope with emergencies and enhancing the reliability and safety of the system.

[0029] In one embodiment, the adsorption box 15 is specifically filled with a special adsorbent 36. The special adsorbent 36 is an aluminosilicate crystal with a regular pore structure. Its pore size is uniform and on the molecular scale; for example, the pore size of a common type A zeolite molecular sieve is approximately 0.4 nm. It can selectively adsorb molecules based on their size and shape. For heavy metal ions in coal mining wastewater, such as lead ions (ionic radius approximately 0.121 nm) and cadmium ions (ionic radius approximately 0.095 nm), the zeolite molecular sieve can utilize its internal pores and surface ion exchange sites to retain these ions through ion exchange and adsorption. Simultaneously, it also has a good removal effect on ammonia nitrogen in the water, effectively purifying the wastewater. Water with stable water quality and chemical properties, capable of functioning stably for extended periods in complex groundwater environments, typically possesses a large surface area and excellent adsorption selectivity. This allows for high adsorption efficiency with relatively low adsorbent dosages. Furthermore, some high-quality adsorbents are regenerable; once saturated, they can be restored to their adsorption capacity through specific regeneration processes (such as chemical elution or thermal regeneration), enabling reuse, reducing operating costs, and improving resource utilization. In addition, specialized adsorbent 36 generally does not generate secondary pollution during adsorption. Its stable chemical properties prevent the release of new harmful substances into groundwater, ensuring the environmental friendliness and sustainability of the groundwater treatment process.

[0030] In one embodiment, a display screen 37 is provided on the front of the upper surface of the controller 23, and multiple waterproof buttons 38 are provided on the rear of the upper surface of the controller 23. Through the display screen 37, the operator can view important water quality parameters in real time, such as the groundwater temperature detected by the water temperature sensor 17, the acidity and alkalinity of the water measured by the pH sensor 18, and the ion content in the water reflected by the conductivity sensor 19. At the same time, the operator can also understand the water level information in the collection well 11 monitored by the water level sensor 34. These data are clearly displayed on the display screen 37 in the form of numbers, charts, or curves, so that the operator can quickly and accurately grasp the real-time status of the groundwater, including whether the water quality is normal and whether the water level is stable.

[0031] In one embodiment, handles 39 are welded to the top of both sides of the inner wall of the filter frame 25. When the filter frame 25 needs to be removed, the operator can easily lift the filter frame 25 from the limiting frame 24 in the water collection well 11 by holding the handles 39, which facilitates cleaning the inside of the filter frame 25.

[0032] In one embodiment, a handle 40 is welded to the rear of the upper surface of the manhole cover 21, which facilitates lifting the manhole cover 21 and opening it.

[0033] The working process of the integrated groundwater pollution prevention and control device in the coal mining area in this embodiment is as follows: Groundwater flows into the collection well 11 through the inlet pipe 26. In the collection well 11, the filter frame 25 can initially intercept larger impurities. The water level sensor 34 monitors the water level in real time and transmits the data to the controller 23. When the water level reaches a certain height, the controller 23 controls the electric valve 35 on the outlet pipe 12 to open, and the groundwater flows into the filter box 13 through the outlet pipe 12. In the filter box 13, the groundwater passes through the coarse filter screen 29, the fine filter screen 30, and the activated carbon filter layer 31 in sequence to remove suspended solids and some pollutants of different particle sizes. The filtered water enters the adsorption box 15 through the connecting pipe 14, where the special adsorbent 36 further adsorbs pollutants such as heavy metals. (The special adsorbent 36 is a silicate aluminate crystal with a regular pore structure. Its pore size is uniform and on the molecular scale. For example, the pore size of the common type A zeolite molecular sieve is about 0.4 nm. It can selectively adsorb according to the molecular size and shape. For heavy metal ions in coal mining wastewater, such as lead ions (ions...) Zeolite molecular sieves can effectively remove ions such as ammonia nitrogen (approximately 0.121 nm radius) and cadmium ions (approximately 0.095 nm radius) through ion exchange and adsorption via their internal channels and surface ion exchange sites. They also effectively remove ammonia nitrogen from water, thus purifying the water. Furthermore, they are chemically stable and can function stably in complex groundwater environments for extended periods. The treated water is discharged through drain pipe 16. At drain pipe 16, water temperature sensor 17, pH sensor 18, and conductivity sensor 19 monitor water quality parameters in real time and transmit the data to controller 23, which displays the data on display screen 37. If water quality abnormalities are detected, relevant operations can be performed via waterproof button 38, such as adjusting the opening and closing status of electric valve 35 or taking other countermeasures. When cleaning or replacing filter frame 25 or filter screen mounting frame 28 is required, the manhole cover 21 can be opened using handle 40, the filter frame 25 can be lifted using handle 39, and the filter screen mounting frame 28 can be removed by unscrewing screws 33 for appropriate processing.

[0034] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A comprehensive device for preventing and controlling groundwater pollution in coal mining areas, characterized in that, The wastewater treatment component (1) includes a collection well (11), an outlet pipe (12), a filter box (13), a connecting pipe (14), an adsorption box (15), a drain pipe (16), a water temperature sensor (17), a pH sensor (18), a conductivity sensor (19), a pin (20), a well cover (21), a sealing chamber (22), a controller (23), a limit frame (24), a filter frame (25), and an inlet pipe (26). The bottom of the front surface of the water collection well (11) is connected to an outlet pipe (12). The end of the outlet pipe (12) away from the water collection well (11) is connected to a filter box (13). The middle of the front surface of the filter box (13) is connected to a connecting pipe (14). The end of the connecting pipe (14) away from the filter box (13) is connected to an adsorption box (15). The middle of the front surface of the adsorption box (15) is connected to a drain pipe (16). A water temperature sensor (17), a pH sensor (18), and a conductivity sensor (19) are installed on the outer wall of the drain pipe (16) near the adsorption box (15). The water collection well (11)... A well cover (21) is hinged to the front of the upper surface by a pin (20). A sealing chamber (22) is opened in the middle of the upper surface of the well cover (21). A controller (23) is installed on the inner wall of the sealing chamber (22). The output terminals of the water temperature sensor (17), pH sensor (18) and conductivity sensor (19) are electrically connected to the input terminal of the controller (23). A limit frame (24) is provided on the upper part of the inner wall of the water collection well (11). A filter frame (25) is attached to the upper surface of the limit frame (24). A water inlet pipe (26) is connected to the upper part of the rear surface of the water collection well (11) near the limit frame (24).

2. The integrated groundwater pollution prevention and control device for coal mining areas according to claim 1, characterized in that, The filter box (13) has three U-shaped slots (27) on its upper surface. The inner walls of the three U-shaped slots (27) are slidably connected to filter screen mounting frames (28). The inner walls of the three filter screen mounting frames (28) are sequentially equipped with a coarse filter screen (29), a fine filter screen (30), and an activated carbon filter layer (31). A sealing plate (32) is fixedly connected to the upper surface of the filter screen mounting frame (28). The outer side of the lower surface of the sealing plate (32) is fixedly connected to the outer side of the upper surface of the filter box (13) near the U-shaped slots (27) by multiple screws (33).

3. The integrated groundwater pollution prevention and control device for coal mining areas according to claim 1, characterized in that, A water level sensor (34) is installed on one side of the inner wall of the water collection well (11), and the output end of the water level sensor (34) is electrically connected to the input end of the controller (23).

4. The integrated groundwater pollution prevention and control device for coal mining areas according to claim 1, characterized in that, Electric valves (35) are installed on the outer walls of the water outlet pipe (12) and the water inlet pipe (26), and the input end of the electric valve (35) is electrically connected to the output end of the controller (23).

5. The integrated groundwater pollution prevention and control device for coal mining areas according to claim 1, characterized in that, The adsorption box (15) is filled with a special adsorbent (36).

6. The integrated groundwater pollution prevention and control device for coal mining areas according to claim 1, characterized in that, The controller (23) has a display screen (37) on the front of its upper surface and multiple waterproof buttons (38) on the rear of its upper surface.

7. The integrated groundwater pollution prevention and control device for coal mining areas according to claim 1, characterized in that, Handles (39) are welded to the top of both sides of the inner wall of the filter frame (25).

8. The integrated groundwater pollution prevention and control device for coal mining areas according to claim 1, characterized in that, A handle (40) is welded to the rear of the upper surface of the manhole cover (21).

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