Device for simulating transportation of karst groundwater pollutants

Abstract

The utility model discloses a device for simulating transportation of karst groundwater pollutants, which relates to the field of experimental equipment and comprises at least two experimental boxes, two porous partition plates are mounted in the experimental boxes, and filler is filled between the two porous partition plates. A narrow slit water tank is formed between the porous partition plate and the side wall of the experiment box; water tanks are adjustably and movably installed on the two sides of the experiment box, water pipes are installed on the water tanks, and a support is installed on the bottom side of the experiment box. It needs to be explained that according to the device for simulating karst underground water pollutant migration and the corresponding method, the migration, distribution and degradation process of solute in an underground water system and the influence of environmental factors can be comprehensively evaluated, the dynamic behavior and degradation mechanism of the solute in the flowing state are investigated, the practicability and accuracy of the experiment are improved, and the experiment efficiency is improved. And the method is simple and convenient to operate and visual in result analysis, and provides powerful technical support for formulation of groundwater pollution control and remediation strategies.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a device for simulating the migration of karst groundwater pollutants. Background Art

[0002] As an important natural resource, the quality of groundwater has a significant impact on human life and the ecological environment. However, due to the impact of human activities, common pollutants in groundwater include benzene series (BTEX), nitrate (NO3 - ), sulfate (SO4 2- ) and other pollutants, the migration and transformation mechanisms of which are complex, pose a serious threat to the groundwater environment. Effectively controlling and remediating groundwater pollution requires a deep understanding of the migration, stratification, and degradation mechanisms of these solutes within the groundwater system. However, existing technologies struggle to fully simulate actual groundwater environments, making it difficult to accurately assess solute migration, degradation effects, and the impact of environmental factors on the degradation process. Utility Model Content

[0003] The purpose of the utility model is to provide a device for simulating the migration of karst groundwater pollutants to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A device for simulating the migration of karst groundwater pollutants, comprising at least two experimental boxes, wherein two porous partitions are installed in the experimental boxes, a filler is filled between the two porous partitions, and a narrow slit water trough is formed between the porous partitions and the side walls of the experimental boxes;

[0006] Water tanks are movably installed on both sides of the experimental box, and a water pipe is installed on the water tank. A bracket is installed on the bottom side of the experimental box, and a storage box is placed in the bracket. The bottom end of the water pipe is placed in the storage box, and a connecting pipe is connected between the water tank and the bottom side of the experimental box.

[0007] Multiple groups of measuring tubes are installed on one side of the experimental box, and the number of measuring tubes in each group is at least three, and the bottom sides of the three measuring tubes are connected to sampling hoses, two of which are vertically connected to the sides of the experimental box, and one sampling hose is connected to the bottom side of the experimental box.

[0008] Furthermore, in a preferred embodiment of the present invention, each of the experimental boxes is 171 cm long in the longitudinal direction, 37 cm wide in the transverse direction, and 63.5 cm high.

[0009] Furthermore, in a preferred embodiment of the present invention, the longitudinal length of the narrow slit water tank is 12 cm.

[0010] Furthermore, in a preferred embodiment of the present invention, the filler is a karst medium.

[0011] Furthermore, in a preferred embodiment of the present invention, the experimental box and the porous partition are both made of transparent organic glass.

[0012] Furthermore, in a preferred embodiment of the present invention, a valve is installed on the water pipe, and the valve is used to adjust the water inlet of the water pipe.

[0013] Furthermore, in a preferred embodiment of the present invention, guide frames are installed on both sides of the experimental box, the water tank is movably installed on the guide frames, and the water tank moves vertically on the guide frames.

[0014] Furthermore, in a preferred embodiment of the present invention, a lifting block is installed on the water tank, and a lifting screw is threadedly installed on the lifting block. The lifting screw is rotated to drive the water tank to rise and fall through the lifting block, and the bottom end of the lifting screw is rotatably installed on the guide frame.

[0015] Furthermore, in a preferred embodiment of the present invention, a plurality of mounting plates are installed on one side of the experimental box, and a plurality of groups of measuring tubes are respectively installed on the plurality of mounting plates.

[0016] Furthermore, in a preferred embodiment of the present invention, universal wheels for movement are installed at the four corners of the bottom side of the bracket.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a device for simulating the migration of karst groundwater pollutants, which involves a comprehensive experimental device and method for solute migration, stratification and degradation mechanism. It can comprehensively evaluate the migration, distribution, degradation process and influence of environmental factors of solutes in the groundwater system, examine the dynamic behavior and degradation mechanism of solutes under the flow state, improve the practicality and accuracy of the experiment, and is easy to operate and the result analysis is intuitive, providing strong technical support for the formulation of groundwater pollution control and remediation strategies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a device for simulating the migration of karst groundwater pollutants proposed by the present invention;

[0020] Figure 2 This is a side structural diagram of a device for simulating the migration of karst groundwater pollutants proposed by the present invention;

[0021] Figure 3This is a schematic diagram of the back structure of a device for simulating the migration of karst groundwater pollutants proposed by the present invention.

[0022] In the figure: 1. Experimental box; 2. Porous partition; 3. Filler; 4. Water tank; 5. Water pipe; 6. Connecting pipe; 7. Storage box; 8. Bracket; 9. Measuring tube; 10. Sampling hose; 11. Mounting plate; 12. Lifting block; 13. Lifting screw; 14. Guide frame; 15. Narrow slit water tank; 16. Valve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Please refer to Figure 1-3 This embodiment provides a device for simulating the migration of karst groundwater pollutants, including at least two experimental boxes 1, two porous partitions 2 are installed in the experimental box 1, a filler 3 is filled between the two porous partitions 2, and a narrow slit water trough 15 is formed between the porous partition 2 and the side wall of the experimental box 1.

[0025] Furthermore, water tanks 4 are movably installed on both sides of the experimental box 1, and water pipes 5 are installed on the water tanks 4. A bracket 8 is installed on the bottom side of the experimental box 1, and a storage box 7 is placed in the bracket 8. The bottom end of the water pipe 5 is placed in the storage box 7, and a connecting pipe 6 is connected between the water tank 4 and the bottom side of the experimental box 1.

[0026] For further information, please refer to Figure 2 , multiple groups of measuring tubes 9 are installed on one side of the experimental box 1, with each group of measuring tubes 9 having at least three tubes, and the bottom sides of the three measuring tubes 9 are connected to sampling hoses 10, two of which are vertically connected to the sides of the experimental box 1, and one sampling hose 10 is connected to the bottom side of the experimental box 1. It should be noted that in the embodiment of the present invention, through the provision of multiple sampling hoses 10, the multiple sampling hoses 10 can respectively sample substances at different heights in the experimental box 1, so as to accurately observe the stratification phenomenon of the solute in the vertical direction.

[0027] Reference Figure 1 Further preferably, an embodiment of the present invention provides a device for simulating the migration of karst groundwater pollutants, wherein each experimental box 1 has a longitudinal length of 171 cm, a transverse width of 37 cm, and a height of 63.5 cm; and the longitudinal length of the narrow slit water tank 15 is 12 cm.

[0028] In addition, please refer to Figure 1-2, further specifically preferably, in the embodiment of the present invention, the filler 3 is a karst medium. It should be noted that, in the embodiment of the present invention, the environment of a real river block is simulated by filling with a karst medium.

[0029] Please continue to refer to Figure 1-2 Specifically, in the embodiment of the present invention, the experimental box 1 and the porous partition 2 are both made of transparent organic glass. It should be noted that in the embodiment of the present invention, the experimental box 1 and the porous partition 2 made of transparent material can facilitate effective observation by the experimenter, thereby improving the experimental effect.

[0030] Furthermore, in an embodiment of the present invention, a device for simulating the migration of karst groundwater pollutants is provided. A valve 16 is installed on the water pipe 5. The valve 16 is used to adjust the water flow into the water pipe 5. It should be noted that in the embodiment of the present invention, the water flow into the water pipe 5 can be adjusted by the valve 16 to ensure that the water level of the water tank 4 can be accurately controlled by the lifting block 12, thereby simulating different static and dynamic groundwater environments.

[0031] More specifically, in the embodiment of the present invention, guide frames 14 are installed on both sides of the experimental box 1, and the water tank 4 is movably installed on the guide frames 14, and the water tank 4 moves vertically on the guide frames 14. It should be noted that in the embodiment of the present invention, when the water tank 4 moves, the water moves on the guide frames 14.

[0032] Please continue to refer to Figure 1-2 More specifically, in the embodiment of the present invention, a lifting block 12 is mounted on the water tank 4, and a lifting screw 13 is threadedly mounted on the lifting block 12. Rotating the lifting screw 13 drives the water tank 4 to rise and fall via the lifting block 12, and the bottom end of the lifting screw 13 is rotatably mounted on a guide frame 14. It should be noted that in the embodiment of the present invention, the lifting block 12 is driven to move by rotating the lifting screw 13, thereby driving the water tank 4 to move. By adjusting the height of the two water tanks 4, the height difference between the inlet and outlet water levels can be adjusted.

[0033] Please refer to Figure 2 More specifically, in the embodiment of the present invention, a plurality of mounting plates 11 are installed on one side of the experimental box 1, and a plurality of groups of measuring tubes 9 are respectively installed on the plurality of mounting plates 11. It should be noted that, in the embodiment of the present invention, the plurality of measuring tubes 9 are installed on one side of the experimental box 1 via the mounting plates 11, and the plurality of measuring tubes 9 are grouped.

[0034] In addition, please refer to Figure 1The present invention provides a device for simulating the migration of karst groundwater pollutants. Universal wheels are installed at the four corners of the bottom side of the bracket 8 for movement. It should be noted that in the present invention, the experimental box 1 is easy to move via the four universal wheels, thereby facilitating operation by the experimenter.

[0035] The present invention provides a device for simulating the migration of karst groundwater pollutants. Its essence can also be understood as a sand trough device that can simulate the migration and accumulation of pollutants in groundwater aquifers. The main working process of the device during use is as follows:

[0036] S1. Experimental preparation stage

[0037] 1. Clarify the experimental purpose and study the seepage characteristics and solute migration patterns of groundwater in the experimental box. Based on the research purpose, design the experimental plan, including the size of the experimental box, the selection of simulation media, and the setting of boundary conditions;

[0038] 2. Prepare experimental materials, such as experimental box (can be made of materials such as organic glass), simulated medium (such as karst medium), solute solution, pressure tube, water level gauge, sampler, etc.;

[0039] 3. Assemble the experimental box according to the design plan, ensure good sealing performance, and lay the simulation medium in the model.

[0040] 4. The experimental boxes are divided into groups of two. Each experimental box is 171 cm long, 37 cm wide and 63.5 cm high. Both ends of the experimental box are equipped with adjustable narrow slit water troughs to simulate the difference in groundwater levels and the dynamic balance of water inflow and outflow.

[0041] S2. Experimental operation stage

[0042] 1. Adjust the water level of the water tanks on both sides of the model. Use the lifting block to adjust the water level of the experimental box to 65cm and run it for three days to achieve dynamic balance.

[0043] 2. According to the experimental plan, BTEX solution (concentration of 100 mg·L) was injected into two experimental boxes at the same time. -1 ) and PS (concentration of 10 g·L -1 or 20 g·L -1 ) solution, the injection time was 3 hours, and the height difference of the lifting block was changed to simulate the pollutant migration and treatment process in groundwater with different flow rates;

[0044] 3. Use pressure tubes and water level gauges to regularly observe water level changes at different locations inside the model and record the data. Use samplers and peristaltic pumps to take stratified samples from different locations inside the model at specific time points (such as different time periods after injection) to ensure the accuracy and reliability of sampling.

[0045] 4. Carefully observe the water level changes of each pressure measuring tube on the back of the seepage trough, record the water level data at different time points, pay attention to whether there are any abnormal phenomena inside the observation model, such as the formation of seepage channels, accumulation of solutes, etc., and record in detail all operations and data during the experiment, including injection time, sampling time, water level changes, solute concentration, etc., to ensure the reproducibility of the experiment.

[0046] S3. End of experiment and data analysis

[0047] 1. An Agilent gas chromatograph was used to detect the concentration of BTEX, a UV-visible spectrophotometer was used to detect the concentration of PS, and a US Hach HQ30d portable water quality analyzer was used to detect water chemical indicators. The stratification phenomenon of the samples obtained was monitored, and the relationship between solute concentration, degradation product concentration and water chemical indicators was analyzed.

[0048] 2. After completing all sampling and monitoring, shut down the experimental equipment, clean up the site, organize and analyze the experimental data, evaluate the migration patterns and seepage velocity of solutes in the experimental box, write an experimental report based on the analysis results, summarize the experimental findings and conclusions, and propose possible improvement suggestions or further research directions.

[0049] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for simulating the migration of karst groundwater pollutants, characterized by: The invention comprises at least two experimental boxes (1), wherein two porous partitions (2) are installed in the experimental boxes (1), a filler (3) is filled between the two porous partitions (2), and a narrow slit water trough (15) is formed between the porous partitions (2) and the side walls of the experimental boxes (1); Water tanks (4) are movably mounted on both sides of the experimental box (1), a water pipe (5) is mounted on the water tank (4), a bracket (8) is mounted on the bottom side of the experimental box (1), a storage box (7) is placed in the bracket (8), the bottom end of the water pipe (5) is placed in the storage box (7), and a connecting pipe (6) is connected between the water tank (4) and the bottom side of the experimental box (1); A plurality of groups of measuring tubes (9) are installed on one side of the experimental box (1), and the number of the measuring tubes (9) in each group is at least three, and the bottom sides of the three measuring tubes (9) are connected to sampling hoses (10), wherein two of the sampling hoses (10) are vertically connected to the side of the experimental box (1), and one of the sampling hoses (10) is connected to the bottom side of the experimental box (1).

2. The device for simulating the migration of karst groundwater pollutants according to claim 1, characterized in that: Each of the experimental boxes (1) has a longitudinal length of 171 cm, a transverse width of 37 cm, and a height of 63.5 cm.

3. The device for simulating the migration of karst groundwater pollutants according to claim 2, characterized in that: The longitudinal length of the narrow slit water trough (15) is 12 cm.

4. The device for simulating the migration of karst groundwater pollutants according to claim 3, characterized in that: The filler (3) is a karst medium.

5. The device for simulating the migration of karst groundwater pollutants according to claim 4, characterized in that: The experimental box (1) and the porous partition (2) are both made of transparent organic glass.

6. The device for simulating the migration of karst groundwater pollutants according to claim 1, characterized in that: A valve (16) is installed on the water pipe (5), and the valve (16) is used to adjust the water inlet of the water pipe (5).

7. The device for simulating the migration of karst groundwater pollutants according to claim 1, characterized in that: Guide frames (14) are installed on both sides of the experimental box (1), and the water tank (4) is movably installed on the guide frames (14). The water tank (4) moves vertically on the guide frames (14).

8. The device for simulating the migration of karst groundwater pollutants according to claim 7, characterized in that: A lifting block (12) is installed on the water tank (4), and a lifting screw (13) is threadedly installed on the lifting block (12). The lifting screw (13) is rotated to drive the water tank (4) to move up and down through the lifting block (12), and the bottom end of the lifting screw (13) is rotatably installed on the guide frame (14).

9. The device for simulating the migration of karst groundwater pollutants according to claim 8, characterized in that: A plurality of mounting plates (11) are installed on one side of the experimental box (1), and a plurality of groups of measuring tubes (9) are respectively installed on the plurality of mounting plates (11).

10. The device for simulating the migration of karst groundwater pollutants according to claim 1, characterized in that: Universal wheels for movement are installed at the four corners of the bottom side of the bracket (8).

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