Underground water pollution in-situ remediation device

Abstract

The utility model relates to the technical field of groundwater pollution remediation, and discloses a groundwater pollution in-situ remediation device which comprises a workbench, the top of the workbench is fixedly connected with a filter box, the inner wall of the workbench is fixedly connected with a liquid medicine barrel, and the top of the workbench is provided with a water pumping assembly. Two sliding frames are fixedly connected to the top of the filter box, closing assemblies are arranged on the sliding frames, a collecting frame is movably installed on the inner bottom face of the filter box, and a limiting frame is fixedly connected to the inner wall of the filter box. Through cooperative use of the liquid medicine barrel, the outer fluted disc, the gear, the driving assembly and other structures, the second stirring shaft can revolve and rotate at the same time, underground water in the liquid medicine barrel is fully mixed in cooperation with the first stirring shaft, the stirring uniformity and efficiency are further improved, and through control of the electromagnetic valve and the liquid level sensor, the stirring effect is improved. Therefore, the complexity of manual operation is reduced, and the working efficiency and safety are improved.

Description

Technical Field

[0001] This utility model relates to the field of groundwater pollution remediation technology, and in particular to an in-situ remediation device for groundwater pollution. Background Technology

[0002] Groundwater pollution is becoming increasingly serious, especially against the backdrop of accelerated industrialization and urbanization, which is exacerbating its scope and severity. Pollutants include organic chemicals (such as solvents and pesticides), heavy metals (such as lead, cadmium, and mercury), and radioactive substances. Once these pollutants enter the groundwater system, they are often difficult to remove, posing a serious threat to the ecological environment and human health. Groundwater remediation technologies are generally divided into two main categories: in-situ remediation and ex-situ remediation. Ex-situ remediation involves pumping contaminated water to the surface for treatment before discharge, while in-situ remediation involves on-site remediation without large-scale groundwater extraction or pollutant relocation. It utilizes existing resources directly for remediation, effectively avoiding waste of groundwater resources, reducing remediation costs, and effectively controlling the pollution source. Therefore, in-situ remediation technology is receiving increasing attention.

[0003] For example, Chinese utility model patent application number 202420464913.8 discloses an in-situ remediation device for groundwater pollution, which includes a mixing tank, a rainwater collection component, a chemical supply component, a stirring component, and a discharge pipe. The rainwater collection component includes a rainwater collection hopper installed on top of the mixing tank and connected to the mixing tank to collect rainwater and guide it into the mixing tank. The chemical supply component has a chemical supply end connected to the mixing tank. The stirring component has a stirring end built into the mixing tank. The discharge pipe can be opened or closed and can connect the mixing tank and a well. This remediation device can collect rainwater into the mixing tank through the rainwater collection hopper. At the same time, the chemical supply component introduces the chemical into the mixing tank. At this time, the discharge pipe is closed. Under the action of the stirring component, the rainwater and chemical in the mixing tank are fully mixed. Then, the discharge pipe is opened to introduce the prepared chemical solution into the well. This device makes full use of natural rainwater, reduces the number of times water needs to be replenished, or even eliminates the need for water replenishment. It also eliminates the need for water pumps and other equipment, making it convenient to use.

[0004] Although the above solution can eliminate the need for machine-based water replenishment, the device relies too heavily on natural water replenishment during actual use. Without rainwater replenishment, the device cannot remediate groundwater pollution, and the problem of groundwater pollution is urgent. Therefore, the device's remediation process is unstable. In addition, the device has low stirring efficiency for the chemical solution, so improvements are needed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an in-situ remediation device for groundwater pollution.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an in-situ remediation device for groundwater pollution, comprising a workbench, a filter box fixedly connected to the top of the workbench, a chemical tank fixedly connected to the inner wall of the workbench, a pumping assembly provided on the top of the workbench, two sliding frames fixedly connected to the top of the filter box, a closing assembly provided on the sliding frames, a collection frame movably installed on the inner bottom surface of the filter box, a limiting frame fixedly connected to the inner wall of the filter box, a limiting groove provided on the limiting frame, a filter plate movably engaged on the limiting groove, an external gear disc fixedly connected to the inner top surface of the chemical tank, three gears meshing with the outer wall of the external gear disc, and a driving assembly capable of driving the gears to revolve on the top of the chemical tank.

[0007] The bottom of the medicine tank penetrates through the workbench and extends into the workbench. The bottom of the medicine tank is arc-shaped, which can effectively guide the medicine to the drain pipe. The outer wall of the collection frame has several large particle holes, which can effectively block large particle impurities. The collection frame is higher on one side, which allows impurities to accumulate well in the filter box. The arc-shaped handles on both sides make it easy for workers to pick up the medicine.

[0008] As a further description of the above technical solution:

[0009] The water pumping assembly includes a water pump fixedly installed on the top of the workbench. The discharge end of the water pump is fixedly connected to the filter box, and the suction end of the water pump is fixedly connected to a suction pipe.

[0010] The suction end of the water pump is fixedly connected to a pipe for extracting groundwater, which can extract groundwater for the device to use. By using contaminated groundwater as a source of mixed chemicals, water resources can be saved and additional water consumption can be avoided.

[0011] As a further description of the above technical solution:

[0012] The closing component includes a slide groove formed within a sliding frame, and a cover plate is slidably connected to the interior of two slide grooves.

[0013] The top of the cover plate is equipped with a handle that allows workers to easily pick it up manually. By setting the cover plate, the filter plate can be restricted downwards to prevent it from shaking.

[0014] As a further description of the above technical solution:

[0015] The drive assembly includes a drive motor fixedly installed on the top of the liquid tank, a connecting shaft fixedly connected to the output end of the drive motor, a rotating frame fixedly connected to the outer wall of the connecting shaft, and a stirring shaft fixedly connected to the bottom of the connecting shaft.

[0016] By setting a connecting shaft, the rotating frame and the stirring shaft can be fixed in place, allowing the drive motor to rotate the rotating frame and the stirring shaft synchronously, which facilitates subsequent mixing.

[0017] As a further description of the above technical solution:

[0018] The bottom of the rotating frame is rotatably connected to three stirring shafts. The top of each stirring shaft passes through the rotating frame and is fixedly connected to a support rod. The top of the support rod is fixedly connected to a gear.

[0019] The gear on the support rod can mesh with the external gear disc, allowing the stirring shaft to rotate during the rotation of the rotating frame, thereby improving the stirring efficiency.

[0020] As a further description of the above technical solution:

[0021] A refill pump is fixedly installed on the top of the medicine tank. The suction end of the refill pump is fixedly connected to a connecting pipe. One end of the connecting pipe is fixedly connected to a filter box. The discharge end of the refill pump passes through the external gear disc and is fixedly connected to the inside of the medicine tank.

[0022] By setting up a recharge pump, water from the filter box can be drawn into the medicine tank for mixing.

[0023] As a further description of the above technical solution:

[0024] The bottom of the medicine tank is fixedly connected to a drain pipe, a solenoid valve is fixedly installed on the outer wall of the drain pipe, and a liquid level sensor is fixedly connected to the inner wall of the medicine tank.

[0025] By setting up a solenoid valve, the liquid level sensor can detect the liquid level in the medicine tank, thereby controlling the solenoid valve to close or open, allowing the drain pipe to discharge the medicine from the medicine tank to the pipeline connected to the downstream groundwater.

[0026] As a further description of the above technical solution:

[0027] A controller is fixedly connected to the top of the workbench, and a discharge pipe is fixedly connected to the outer wall of the medicine tank.

[0028] By setting up a controller, staff can easily control the process, and by setting up a discharge pipe, staff can add reducing agents or oxidizing agents.

[0029] This utility model has the following beneficial effects:

[0030] 1. Compared with existing technologies, this in-situ groundwater remediation device, through the coordinated use of structures such as a chemical tank, an external gear disc, gears, and drive components, enables the stirring shaft two to rotate on its own axis while revolving around the central axis. This, combined with the stirring shaft one, thoroughly mixes the groundwater in the chemical tank, thereby improving the uniformity and efficiency of the mixing. Furthermore, through the control of solenoid valves and liquid level sensors, the complexity of manual operation is reduced, improving work efficiency and safety.

[0031] 2. Compared with existing technologies, this in-situ groundwater pollution remediation device, through the coordinated use of structures such as filter boxes, collection frames, filter plates, and shut-off components, can ensure that the water quality achieves a high purification effect during the initial treatment through the dual filtration mechanism of the collection frame and filter plates. Moreover, the design of sliding cover and lifting collection frame makes operation very simple, avoids the system efficiency reduction due to impurity accumulation, ensures the long-term stable operation of the equipment, and greatly facilitates the daily maintenance and cleaning of the equipment. Attached Figure Description

[0032] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an in-situ remediation device for groundwater pollution proposed in this utility model.

[0033] Figure 2 This is a three-dimensional schematic diagram of the connecting pipe and cover plate of an in-situ remediation device for groundwater pollution proposed in this utility model.

[0034] Figure 3 This is a three-dimensional schematic diagram of the shut-off component structure of an in-situ remediation device for groundwater pollution proposed in this utility model;

[0035] Figure 4 This is a three-dimensional schematic diagram of the drive component structure of an in-situ remediation device for groundwater pollution proposed in this utility model.

[0036] Legend:

[0037] 1. Workbench; 2. Filter box; 3. Medicine tank; 4. Sliding frame; 5. Collection frame; 6. Restriction frame; 7. Restriction groove; 8. Filter plate; 9. External gear disc; 10. Three gears; 11. Water pump; 12. Slide chute; 13. Cover plate; 14. Drive motor; 15. Connecting shaft; 16. Rotating frame; 17. Stirring shaft one; 18. Stirring shaft two; 19. Support rod; 20. Recharge pump; 21. Drain pipe; 22. Solenoid valve; 23. Liquid level sensor; 24. Controller; 25. Discharge pipe; 26. Connecting pipe; 27. Suction pipe. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1-4 This utility model provides an in-situ remediation device for groundwater pollution: It includes a workbench 1, a filter box 2 fixedly connected to the top of the workbench 1, a chemical tank 3 fixedly connected to the inner wall of the workbench 1, a pumping assembly on the top of the workbench 1, two sliding frames 4 fixedly connected to the top of the filter box 2, a closing assembly on the sliding frames 4, a collection frame 5 movably installed on the inner bottom surface of the filter box 2, a limiting frame 6 fixedly connected to the inner wall of the filter box 2, a limiting groove 7 on the limiting frame 6, a filter plate 8 movably engaged in the limiting groove 7, an external gear disc 9 fixedly connected to the inner top surface of the chemical tank 3, three gears 10 meshing with the outer wall of the external gear disc 9, a driving assembly capable of driving the gears 10 to rotate on the top of the chemical tank 3, and the bottom of the chemical tank 3 penetrating the workbench 1 and extending to the workbench 1. Inside the workbench 1, the bottom of the liquid tank 3 is arc-shaped, which can effectively guide the liquid to the drain pipe 21. The outer wall of the collection frame 5 has several large particle holes, which can effectively block large particles of impurities. The collection frame 5 is higher on one side, which allows impurities to accumulate well in the filter box 2. The arc-shaped handles on both sides make it easy for workers to pick up. Through the coordinated use of the liquid tank 3, the outer gear plate 9, the gear 10 and the drive assembly, the stirring shaft 2 18 can rotate on its own axis while revolving around the center. Together with the stirring shaft 1 17, it can fully mix the groundwater in the liquid tank 3, thereby improving the uniformity and efficiency of stirring. Furthermore, through the control of the solenoid valve 22 and the liquid level sensor 23, the complexity of manual operation is reduced, and work efficiency and safety are improved.

[0040] The water pumping assembly includes a water pump 11 fixedly installed on the top of the workbench 1. The discharge end of the water pump 11 is fixedly connected to the filter box 2. The suction end of the water pump 11 is fixedly connected to a suction pipe 27. The suction end of the water pump 11 is fixedly connected to a pipe for drawing groundwater, which can draw groundwater for the device to use. By using contaminated groundwater as the mixing water source, water resources can be saved and additional water consumption can be avoided. The closing assembly includes a slide groove 12 opened in the sliding frame 4. The two slide grooves 12 are slidably connected to a cover plate 13. The top of the cover plate 13 is provided with a handle that is convenient for the staff to manually pick up. By setting the cover plate 13, the filter plate 8 can be restricted downward to prevent the filter plate 8 from shaking.

[0041] The drive assembly includes a drive motor 14 fixedly mounted on the top of the liquid tank 3. The output end of the drive motor 14 is fixedly connected to a connecting shaft 15. A rotating frame 16 is fixedly connected to the outer wall of the connecting shaft 15. A stirring shaft 17 is fixedly connected to the bottom of the connecting shaft 15. By setting the connecting shaft 15, the rotating frame 16 and the stirring shaft 17 can be fixed, so that when the drive motor 14 rotates, it can drive the rotating frame 16 and the stirring shaft 17 to rotate synchronously, which is convenient for subsequent stirring and mixing. Three stirring shafts 18 are rotatably connected to the bottom of the rotating frame 16. The top of the stirring shaft 18 passes through the rotating frame 16 and is fixedly connected to a support rod 19. The top of the support rod 19 is fixedly connected to a gear 10. Through the gear 10 on the support rod 19, it can mesh with the external gear disk 9, so that the stirring shafts 18 can rotate on their own axis during the rotation of the rotating frame 16, thereby improving the stirring efficiency.

[0042] A refill pump 20 is fixedly installed on the top of the medicine tank 3. The suction end of the refill pump 20 is fixedly connected to a connecting pipe 26, one end of which is fixedly connected to the filter box 2. The discharge end of the refill pump 20 passes through the external gear disc 9 and is fixedly connected to the inside of the medicine tank 3. By setting up the refill pump 20, water in the filter box 2 can be drawn into the medicine tank 3 for mixing. A drain pipe 21 is fixedly connected to the bottom of the medicine tank 3. A solenoid valve 22 is fixedly installed on the outer wall of the drain pipe 21. A liquid level sensor is fixedly connected to the inner wall of the medicine tank 3. The device 23, by setting a solenoid valve 22, can control the solenoid valve 22 to close or open according to the liquid level sensor 23 detecting the liquid level in the medicine tank 3, so that the drain pipe 21 can discharge the medicine in the medicine tank 3 to the pipe connected to the downstream of the groundwater. The top of the workbench 1 is fixedly connected to the controller 24, and the outer wall of the medicine tank 3 is fixedly connected to the discharge pipe 25. The controller 24 makes it easy for the staff to control, and the discharge pipe 25 allows the staff to add reducing agent or oxidizing agent.

[0043] Working principle: First, the controller 24 is electrically connected to the water pump 11, drive motor 14, solenoid valve 22, and level sensor 23 to facilitate easier control of the device. Then, the suction pipe 27 of the water pump 11 is connected to the groundwater extraction pipeline. The water pump 11 is then started to pump groundwater into the filter box 2. The groundwater passes through the holes in the collection frame 5, filtering out some large particles. Then, the groundwater enters the filter plate 8, where it passes through the fine holes to remove some small particles. Meanwhile, after the device has been running for a period of time, large particles accumulate in the collection frame 5. Inside, the cover plate 13 can be slid open, and then the handle on the collection frame 5 can be grasped to lift the collection frame 5. Then the impurities can be poured into the treatment position for easy cleaning. Then the reinjection pump 20 can be started. After being pumped by the reinjection pump 20, the groundwater enters the chemical tank 3 along the connecting pipe 26. Then the staff can add oxidants (such as persulfate, potassium permanganate, etc.) or reducing agents (such as ferrous ions, sulfate, etc.) to the contaminated groundwater and pour them into the chemical tank 3 through the discharge pipe 25. The harmful substances in the groundwater are chemically reacted by the oxidants or reducing agents and converted into harmless or low-toxicity substances.

[0044] When a certain amount of groundwater accumulates in the medicine tank 3, the drive motor 14 can be started, thereby driving the output end to rotate, synchronously driving the connecting shaft 15 and the rotating frame 16 to rotate. At this time, the gear 10 meshes with the external gear disk 9, allowing the stirring shaft 18 to rotate on its own axis while revolving around the central axis. Under the action of the intermediate stirring shaft 17, the groundwater in the medicine tank 3 is thoroughly mixed and stirred. Then, when the liquid level sensor 23 detects that the liquid has reached the discharge capacity, the controller 24 can automatically control the solenoid valve 22 to open, and the treated groundwater... The wastewater is reinjected into the ground through drainage pipe 21. By utilizing the contaminated groundwater as a mixing solution, water resources can be saved and additional water consumption can be avoided. The resulting chemical solution can be reinjected into the downstream groundwater to transform it, gradually improving water quality and providing certain long-term remediation benefits. Furthermore, given the wide distribution and long remediation cycle of groundwater pollution treatment, which requires water sources for mixing chemicals, groundwater can be continuously extracted for mixing and reinjection. This ensures a continuous supply of the necessary chemical solution for remediation over a long period, demonstrating strong environmental advantages.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A groundwater pollution in-situ remediation device, comprising a workbench (1), characterized in that: A filter box (2) is fixedly connected to the top of the workbench (1), a medicine tank (3) is fixedly connected to the inner wall of the workbench (1), a water pumping assembly is provided on the top of the workbench (1), two sliding frames (4) are fixedly connected to the top of the filter box (2), a closing assembly is provided on the sliding frame (4), a collection frame (5) is movably installed on the inner bottom surface of the filter box (2), a limiting frame (6) is fixedly connected to the inner wall of the filter box (2), a limiting groove (7) is provided on the limiting frame (6), a filter plate (8) is movably engaged on the limiting groove (7), an external gear disc (9) is fixedly connected to the inner top surface of the medicine tank (3), three gears (10) are meshed on the outer wall of the external gear disc (9), and a driving assembly capable of driving the gears (10) to revolve is provided on the top of the medicine tank (3).

2. The in-situ remediation device for groundwater pollution according to claim 1, characterized in that: The water pumping assembly includes a water pump (11) fixedly installed on the top of the workbench (1). The discharge end of the water pump (11) is fixedly connected to the filter box (2), and the suction end of the water pump (11) is fixedly connected to a suction pipe (27).

3. The in-situ remediation device for groundwater pollution according to claim 1, characterized in that: The closing component includes a groove (12) formed in the sliding frame (4), and a cover plate (13) is slidably connected inside the two grooves (12).

4. The in-situ remediation device for groundwater pollution according to claim 1, characterized in that: The drive assembly includes a drive motor (14) fixedly installed on the top of the liquid tank (3), a connecting shaft (15) fixedly connected to the output end of the drive motor (14), a rotating frame (16) fixedly connected to the outer wall of the connecting shaft (15), and a stirring shaft (17) fixedly connected to the bottom of the connecting shaft (15).

5. The in-situ remediation device for groundwater pollution according to claim 4, characterized in that: The bottom of the rotating frame (16) is rotatably connected to three stirring shafts (18). The top of the stirring shafts (18) passes through the rotating frame (16) and is fixedly connected to a support rod (19). The top of the support rod (19) is fixedly connected to a gear (10).

6. The in-situ remediation device for groundwater pollution according to claim 1, characterized in that: A refill pump (20) is fixedly installed on the top of the medicine tank (3). The suction end of the refill pump (20) is fixedly connected to a connecting pipe (26). One end of the connecting pipe (26) is fixedly connected to the filter box (2). The discharge end of the refill pump (20) passes through the outer gear disc (9) and is fixedly connected to the inside of the medicine tank (3).

7. The in-situ remediation device for groundwater pollution according to claim 1, characterized in that: The bottom of the liquid tank (3) is fixedly connected to a drain pipe (21), and a solenoid valve (22) is fixedly installed on the outer wall of the drain pipe (21). A liquid level sensor (23) is fixedly connected to the inner wall of the liquid tank (3).

8. The in-situ remediation device for groundwater pollution according to claim 1, characterized in that: The top of the workbench (1) is fixedly connected to a controller (24), and the outer wall of the liquid tank (3) is fixedly connected to a discharge pipe (25).

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