A dynamic groundwater circulating chemical reduction remediation system

Abstract

The application discloses a dynamic groundwater circulation chemical reduction remediation system, and the remediation system comprises a water pumping well, an injection well, a sewage treatment station, a water storage pool and a dross recovery pool; the water pumping well is connected with the sewage treatment station through a water pumping pipe; the upper end of the sewage treatment station is connected with a heavy metal sewage treatment tank through a treatment pipe; the sewage treatment station is connected with one side end of the water storage pool through a sewage pipe; the other side upper end of the water storage pool is provided with a dross overflow groove; the dross overflow groove is connected with the dross recovery pool through a dross removal pipe; the dross recovery pool is provided with filter cloth at the upper end; and the lower end of the dross recovery pool is connected with the injection well through an injection pipe. The dynamic groundwater circulation chemical reduction remediation system can effectively control the heavy metal capturing agent added in the sewage treatment plant and the heavy metal capturing agent added in the water storage pool in real time, so that the excessive addition of the heavy metal capturing agent is avoided, resources are saved, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of mining area management technology, and in particular to a dynamic groundwater circulation chemical reduction remediation system. Background Technology

[0002] Key design considerations for in-situ dynamic groundwater circulation chemo-biological reduction technology include hydrogeology, groundwater chemistry, and contaminant characteristics. This helps determine remediation implementation process parameters, including system layout, injection point type, injection frequency, solution concentration, and process maintenance and monitoring.

[0003] In the chemical-biological remediation process of dynamic groundwater circulation, the dynamic circulation of groundwater is accomplished through pumping wells and injection wells, while the operational effectiveness is assessed by sampling and analysis from the system and monitoring wells. Contaminated groundwater is pumped out through the pumping wells and treated at the on-site wastewater treatment plant. The treated water is discharged after confirmation of compliance with standards, or injected back into the pilot-scale groundwater system via injection wells to promote dynamic groundwater circulation. To further facilitate in-situ chemical-biological remediation, organic carbon sources or ferrous sulfate solution will be added to the injected water as needed.

[0004] Existing monitoring wells are commonly used to monitor changes in pollutant concentrations in groundwater within the system, determining the impact range and remediation effect of a pilot-scale dynamic groundwater circulation chemical-biological reduction system, and providing a basis for subsequent overall remediation work. However, monitoring wells only serve a monitoring function; the monitoring results can only provide a basis for subsequent overall remediation work, and cannot be used to adjust the heavy metal removal agents added to the wastewater treatment plant based on the monitoring results. When dynamic groundwater is pumped to the wastewater treatment plant for heavy metal removal, the concentration of heavy metal ions varies at different locations. If the heavy metal removal agents added to the wastewater treatment plant are required to achieve a continuous and near-complete removal of heavy metal ions from the dynamic groundwater, there is a high possibility that the amount of heavy metal removal agents added at certain times may be excessive, resulting in waste of heavy metal removal agents. Summary of the Invention

[0005] In view of this, the present invention proposes a dynamic groundwater circulation chemical reduction remediation system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dynamic groundwater circulation chemical reduction remediation system includes pumping wells, injection wells, a wastewater treatment plant, a reservoir, and a scum recovery tank. Several pumping wells are connected to the wastewater treatment plant via pumping pipes. The upper end of the wastewater treatment plant is connected to a heavy metal wastewater treatment tank via a treatment pipe. The wastewater treatment plant is connected to one side of the reservoir via a wastewater pipe, and a scum overflow trough is located at the upper end of the other side of the reservoir. The scum overflow trough is connected to the scum recovery tank via a scum removal pipe. A filter cloth is installed at the upper end of the scum recovery tank. The lower end of the scum recovery tank is connected to several injection wells via injection pipes.

[0008] The water storage tank has a horizontally rotating shaft with several sets of stirring perforated plates spaced at regular intervals. A accommodating distance is maintained between the sets of stirring perforated plates. An air plate with a central hole is placed within each accommodating distance. The air plate has several air outlets on its two side faces, a liquid outlet at its bottom, and an air inlet at its top. All air inlets are connected to a vent pipe, which is connected to a liquid inlet pipe. A first control valve and a drive pump are respectively installed on the vent pipe and the liquid inlet pipe. A second control valve is installed on the slag removal pipe. A flow regulating valve is installed on the treatment pipe. Several sampling tubes are sequentially connected from bottom to top along the front wall of the water storage tank, and each sampling tube is connected to a water quality heavy metal detector. The output of the water quality heavy metal detector is connected to the input of a controller, and the output of the controller is connected to the inputs of all control valves, the drive pump, and the flow regulating valve.

[0009] Furthermore, several pumping wells extend into the area in the direction of the pollutant plume flowing through the underground aquifer; several injection wells extend into the areas on both sides of the pollutant plume flowing through the underground aquifer.

[0010] Furthermore, the rotating shaft is provided with a number of shaft connecting blocks in a horizontal direction, and each shaft connecting block is provided with a set of stirring holes.

[0011] Furthermore, each set of stirring perforated plates is composed of two stirring perforated plates with a fan-shaped longitudinal section; the two stirring perforated plates form a V shape; and there is an accommodating space between the two sets of stirring perforated plates.

[0012] Furthermore, a hydrocyclone is fixedly installed on the inner top wall and inner bottom wall of the water storage tank, and the hydrocyclone is located within the accommodating space; the hydrocyclone is composed of two conical perforated plates connected together; the outer diameter of the two conical perforated plates gradually increases in the outward direction; a certain distance is left between the two conical perforated plates and the rotating shaft and the stirring space.

[0013] Furthermore, the heavy metal wastewater treatment tank contains a heavy metal scavenging agent; the inlet pipe is connected to the inlet tank, which contains the heavy metal scavenging agent.

[0014] A remediation method using a dynamic groundwater circulation chemical reduction remediation system includes the following steps:

[0015] S1: Several sampling tubes deliver several samples to a water quality heavy metal detector, which then detects the actual values ​​of heavy metal pollutants in each sample. ~ ;

[0016] S2: First, the actual values ​​of heavy metal pollutants at each sample location in the water storage tank from bottom to top are measured. ~ Is it uniform?

[0017] S21: Calculate the average value of heavy metal pollutants in several samples using the average value formula. Then, the actual values ​​of heavy metal pollutants ~ Compared with the average value of heavy metal pollutants The actual relative differences in heavy metal pollutants at the locations of each sample were calculated using the comparison formula. Establish the highest threshold for the actual relative difference of heavy metal pollutants. Line graph, minimum threshold of actual relative difference of heavy metal pollutants Linear graphs and actual relative differences of heavy metal pollutants Line chart;

[0018] S22: If the actual relative difference of heavy metal pollutants The line graphs all fall within the highest threshold of the actual relative difference of heavy metal pollutants. Line graph, minimum threshold of actual relative difference of heavy metal pollutants If the lines are aligned, it indicates that the removal of heavy metal ions from the water in the reservoir is uniform, and the S3 step should be continued.

[0019] S23: If the actual relative difference of heavy metal pollutants The line graph has a maximum threshold that exceeds the actual relative difference of heavy metal pollutants. Line graph, minimum threshold of actual relative difference of heavy metal pollutants A straight line graph indicates that the removal of heavy metal ions from the water in the reservoir is uneven.

[0020] Air is then introduced into the venting pipe for a certain period of time. The air forms bubbles in the water storage tank, further mixing the water. Several samples are then transported to a water quality heavy metal detector via several sampling tubes. The water quality heavy metal detector then detects the actual values ​​of heavy metal pollutants in each sample. ~ Following steps S21-23, the uniformity of heavy metal ion removal in the water storage tank was tested. This process was repeated, with air introduced into the ventilation pipe until the actual relative difference in heavy metal pollutants was reached. The line graphs all fall within the highest threshold of the actual relative difference of heavy metal pollutants. Line graph, minimum threshold of actual relative difference of heavy metal pollutants Between the straight lines, the water in the reservoir is ultimately treated evenly to remove heavy metal ions;

[0021] S3: Under the condition that the removal of heavy metal ions in the water of the reservoir is uniform, the average value of heavy metal pollutants is measured. Is it below the standard setting value for heavy metal pollutants? ;

[0022] S31: If Then the water that has been treated by the sewage treatment plant in the reservoir will be directly discharged into the injection well;

[0023] S32: If Then, a heavy metal scavenging agent is added to the inlet pipe. After a certain amount is added, air is introduced into the air plate through the vent pipe. The air forms bubbles in the water storage tank. A certain amount of heavy metal ions still contained in the sewage in the water storage tank react with the corresponding heavy metal scavenging agent to form complexes or precipitates. The complexes or precipitates adhere to the bubbles and form scum. The second control valve on the scum removal pipe is opened, and the scum remains on the filter cloth. Water that meets the standards in the scum recovery tank is discharged into the injection well.

[0024] S33: Average values ​​of heavy metal pollutants Compared with the standard setting value of heavy metal pollutants The relative difference between the levels of heavy metal pollutants was calculated using the comparison formula. Establish the highest threshold for the standard setting value of heavy metal pollutants. Linear graph, minimum threshold values ​​for heavy metal pollutant standards Linear graph and relative differences of heavy metal pollutants Line graph;

[0025] S34: If the relative difference of heavy metal pollutants is... The straight lines all fall within the highest threshold of the heavy metal pollutant standard settings. Linear graph, minimum threshold values ​​for heavy metal pollutant standards Between straight lines, there is no need to adjust the flow regulating valve on the processing pipe;

[0026] S35: If the relative difference of heavy metal pollutants is... The line graph shows the highest threshold exceeding the standard settings for heavy metal pollutants. Linear graph, minimum threshold values ​​for heavy metal pollutant standards If the graph is a straight line, then the flow control valve on the processing pipe needs to be adjusted;

[0027] Adjust the flow control valve on the treatment pipe until the relative difference between the heavy metal pollutants and the target value is reached. The straight lines all fall within the highest threshold of the heavy metal pollutant standard settings. Linear graph, minimum threshold values ​​for heavy metal pollutant standards Between the lines.

[0028] Furthermore, the formula for the average value in step S21 is: .

[0029] Furthermore, the comparison formula in step S21 is as follows: The comparison formula in step S33 is as follows: .

[0030] Compared with existing technologies, the beneficial effects of this invention are as follows: The dynamic groundwater circulation chemical reduction remediation method provided by this invention can effectively regulate the heavy metal ion content in the wastewater treatment plant and the reservoir in real time, even if the heavy metal ion content in the dynamic groundwater at different locations is different. This not only achieves the effect of continuously and basically completely removing heavy metal ions from the dynamic groundwater, but also avoids the situation where the amount of heavy metal ion added is excessive at certain times, thus avoiding unnecessary waste of heavy metal ion, saving resources, reducing costs, and ensuring that the extraction and injection of dynamic groundwater can be carried out 24 hours a day without interruption. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the water storage tank and scum recovery tank of the present invention;

[0033] Figure 3 This is a schematic diagram of the internal structure of the water storage tank of the present invention;

[0034] Figure 4 This is a front view of the water storage tank and scum recovery tank of the present invention.

[0035] Figure 5 A front sectional view of the water storage tank and scum recovery tank of the present invention after the drive pump and control valve are installed;

[0036] In the diagram: 1. Pumping well; 2. Injection well; 3. Wastewater treatment plant; 4. Storage tank; 5. Scum recovery tank; 6. Treatment pipe; 7. Heavy metal wastewater treatment tank; 8. Scum overflow trough; 9. Scum removal pipe; 10. Filter cloth; 11. Rotating shaft; 12. Shaft connecting block; 13. Stirring orifice plate; 14. Air plate; 141. Air outlet; 142. Liquid outlet; 15. Vent pipe; 16. Liquid inlet pipe; 17. Control valve; 18. Drive pump; 19. Flow regulating valve; 20. Hydrocyclone; 21. Sampling pipe. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Example:

[0041] like Figure 1-5 As shown, a dynamic groundwater circulation chemical reduction remediation system includes a pumping well 1, an injection well 2, a sewage treatment plant 3, a water storage tank 4, and a scum recovery tank 5.

[0042] Several pumping wells 1 are connected to the wastewater treatment plant 3 via pumping pipes, extending into the area in the direction of the pollution plume from the underground aquifer. The upper end of the wastewater treatment plant 3 is connected to a heavy metal wastewater treatment tank 7 via a treatment pipe 6. The wastewater treatment plant 3 is connected to one side of a reservoir 4 via a wastewater pipe, and a scum overflow trough 8 is located at the upper end of the other side of the reservoir 4. The scum overflow trough 8 is connected to a scum recovery tank 5 via a scum removal pipe 9. A filter cloth 10 is installed at the upper end of the scum recovery tank 5. The lower end of the scum recovery tank 5 is connected to several injection wells 2 via injection pipes, extending into the areas on both sides of the pollution plume from the underground aquifer.

[0043] The water storage tank 4 is equipped with a horizontally rotating shaft 11, and several horizontally arranged shaft connecting blocks 12 are provided on the shaft 11. Each shaft connecting block 12 is equipped with a set of stirring orifice plates 13. Each set of stirring orifice plates 13 is composed of two upper and lower stirring orifice plates with a fan-shaped longitudinal section; the two stirring orifice plates form a V shape; and there is a space between the two sets of stirring orifice plates.

[0044] A hydrocyclone 20 is fixedly installed on the inner top and bottom walls of the water storage tank 4, and the hydrocyclone 20 is located within the accommodating space. The hydrocyclone 20 is composed of two conical perforated plates connected together; the outer diameter of the two conical perforated plates gradually increases outwards; a certain distance is left between the two conical perforated plates and the rotating shaft 11 and the stirring space.

[0045] Each accommodating distance contains an air plate 14 with a central hole; the air plate 14 has several air outlet holes 141 on both sides, a liquid outlet hole 142 at the bottom, and an air inlet hole at the top; all air inlets are connected to a vent pipe 15, and a liquid inlet pipe 16 is connected to the vent pipe 15; a control valve 17 and a drive pump 18 are respectively installed on the vent pipe 15 and the liquid inlet pipe 16; a control valve 17 is installed on the slag removal pipe 9; a flow regulating valve 19 is installed on the treatment pipe 6; several sampling pipes 21 are connected sequentially from bottom to top on the front side wall of the water storage tank 4, and the several sampling pipes 21 are respectively connected to a water quality heavy metal detector; the output end of the water quality heavy metal detector is connected to the input end of the controller, and the output end of the controller is connected to the input ends of all control valves 17, drive pumps 18, and flow regulating valves respectively.

[0046] The heavy metal wastewater treatment tank 7 contains a heavy metal scavenging agent; the inlet pipe 16 is connected to the inlet tank, which contains the heavy metal scavenging agent.

[0047] Pumping well 1 pumps groundwater contaminated by the pollution plume to wastewater treatment plant 3. A heavy metal scavenging agent is added to wastewater treatment plant 3. This agent is a compound that can form stable complexes with heavy metal elements, removing heavy metal ions from water, soil, and other media through adsorption and chelation. In this scheme, the heavy metal scavenging agent can be any one or a combination of several of the following: adsorption resin, ion exchange resin, organotin compounds, and chelating agents.

[0048] Water that has undergone heavy metal ion removal is transferred from wastewater treatment plant 3 to storage tank 4. Storage tank 4 tests the uniformity of heavy metal ion concentration in its water and further homogenizes water with uneven heavy metal ion concentrations. Storage tank 4 also monitors whether the heavy metal ion concentration in its water exceeds the emission standards. If the heavy metal ion concentration in storage tank 4 is still too high and does not meet the emission standards, the concentration of heavy metal ions in storage tank 4 can be further reduced to meet the emission standards. The heavy metal scavenging agent in storage tank 4 forms complexes or precipitates with the heavy metal ions, which then adhere to the air bubbles and form scum for removal.

[0049] The scum remains on the filter cloth 10, and the water that meets the discharge standards is discharged from the scum recovery tank 5 into the injection well 2. The injection well 2 is then injected back into the groundwater of the polluted area to promote the dynamic circulation of groundwater.

[0050] A remediation method using a dynamic groundwater circulation chemical reduction remediation system includes the following steps:

[0051] S1: Several sampling tubes deliver several samples to a water quality heavy metal detector, which then detects the actual values ​​of heavy metal pollutants in each sample. ~ ;

[0052] S2: First, the actual values ​​of heavy metal pollutants at each sample location in the water storage tank from bottom to top are measured. ~ Is it uniform?

[0053] S21: Calculate the average value of heavy metal pollutants in several samples using the average value formula. Then, the actual values ​​of heavy metal pollutants ~ Compared with the average value of heavy metal pollutants The actual relative differences in heavy metal pollutants at the locations of each sample were calculated using the comparison formula. Establish the highest threshold for the actual relative difference of heavy metal pollutants. Line graph, minimum threshold of actual relative difference of heavy metal pollutants Linear graphs and actual relative differences of heavy metal pollutants Line chart;

[0054] S22: If the actual relative difference of heavy metal pollutants The line graphs all fall within the highest threshold of the actual relative difference of heavy metal pollutants. Line graph, minimum threshold of actual relative difference of heavy metal pollutants If the lines are aligned, it indicates that the removal of heavy metal ions from the water in the reservoir is uniform, and the S3 step should be continued.

[0055] S23: If the actual relative difference of heavy metal pollutants The line graph has a maximum threshold that exceeds the actual relative difference of heavy metal pollutants. Line graph, minimum threshold of actual relative difference of heavy metal pollutants A straight line graph indicates that the removal of heavy metal ions from the water in the reservoir is uneven.

[0056] Air is then introduced into the venting pipe for a certain period of time. The air forms bubbles in the water storage tank, further mixing the water. Several samples are then transported to a water quality heavy metal detector via several sampling tubes. The water quality heavy metal detector then detects the actual values ​​of heavy metal pollutants in each sample. ~ Following steps S21-23, the uniformity of heavy metal ion removal in the water storage tank was tested. This process was repeated, with air introduced into the ventilation pipe until the actual relative difference in heavy metal pollutants was reached. The line graphs all fall within the highest threshold of the actual relative difference of heavy metal pollutants. Line graph, minimum threshold of actual relative difference of heavy metal pollutants Between the straight lines, the water in the reservoir is ultimately treated evenly to remove heavy metal ions;

[0057] S3: Under the condition that the removal of heavy metal ions in the water of the reservoir is uniform, the average value of heavy metal pollutants is measured. Is it below the standard setting value for heavy metal pollutants? ;

[0058] S31: If Then the water that has been treated by the sewage treatment plant in the reservoir will be directly discharged into the injection well;

[0059] S32: If Then, a heavy metal scavenging agent is added to the inlet pipe. After a certain amount is added, air is introduced into the air plate through the vent pipe. The air forms bubbles in the water storage tank. A certain amount of heavy metal ions still contained in the sewage in the water storage tank react with the corresponding heavy metal scavenging agent to form complexes or precipitates. The complexes or precipitates adhere to the bubbles and form scum. The control valve on the scum removal pipe is opened, and the scum remains on the filter cloth. Water that meets the standards in the scum recovery tank is discharged into the injection well.

[0060] S33: Average values ​​of heavy metal pollutants Compared with the standard setting value of heavy metal pollutants The relative difference between the levels of heavy metal pollutants was calculated using the comparison formula. Establish the highest threshold for the standard setting value of heavy metal pollutants. Linear graph, minimum threshold values ​​for heavy metal pollutant standards Linear graph and relative differences of heavy metal pollutants Line graph;

[0061] S34: If the relative difference of heavy metal pollutants is... The straight lines all fall within the highest threshold of the heavy metal pollutant standard settings. Linear graph, minimum threshold values ​​for heavy metal pollutant standards Between straight lines, there is no need to adjust the flow regulating valve on the processing pipe;

[0062] S35: If the relative difference of heavy metal pollutants is... The line graph shows the highest threshold exceeding the standard settings for heavy metal pollutants. Linear graph, minimum threshold values ​​for heavy metal pollutant standards If the graph is a straight line, then the flow control valve on the processing pipe needs to be adjusted;

[0063] Adjust the flow control valve on the treatment pipe until the relative difference between the heavy metal pollutants and the target value is reached. The straight lines all fall within the highest threshold of the heavy metal pollutant standard settings. Linear graph, minimum threshold values ​​for heavy metal pollutant standards Between the lines.

[0064] The formula for the average value in step S21 is: .

[0065] The comparison formula in step S21 is: The comparison formula in step S33 is as follows: .

[0066] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dynamic groundwater circulation chemical reduction remediation system, comprising a pumping well (1), an injection well (2), a sewage treatment plant (3), a reservoir (4), and a scum recovery tank (5); several pumping wells (1) are connected to the sewage treatment plant (3) via pumping pipes; characterized in that, The upper end of the sewage treatment station (3) is connected to a heavy metal sewage treatment tank (7) via a treatment pipe (6); the sewage treatment station (3) is connected to one side of a water storage tank (4) via a sewage pipe, and the upper end of the other side of the water storage tank (4) is provided with a scum overflow trough (8); the scum overflow trough (8) is connected to a scum recovery tank (5) via a scum removal pipe (9); the upper end of the scum recovery tank (5) is provided with a filter cloth (10); the lower end of the scum recovery tank (5) is connected to several injection wells (2) via an injection pipe. The water storage tank (4) is equipped with a rotating shaft (11) that rotates laterally. Several sets of stirring perforated plates (13) are arranged at certain intervals on the rotating shaft (11). There is a accommodating distance between the several sets of stirring perforated plates (13). An air plate (14) with a central hole is placed in each accommodating distance. Several air outlets (141) are opened on both sides of the air plate (14), a liquid outlet (142) is opened at the bottom, and an air inlet is opened at the top. All air inlets are connected to a vent pipe (15), and a liquid inlet pipe (16) is connected to the vent pipe (15). 5) The inlet pipe (16) is equipped with a first control valve and a drive pump (18); the slag removal pipe (9) is equipped with a second control valve; the treatment pipe (6) is equipped with a flow regulating valve (19); the front side wall of the water storage tank (4) is connected to several sampling pipes (21) from bottom to top, and the several sampling pipes (21) are connected to the water quality heavy metal detector respectively; the output end of the water quality heavy metal detector is connected to the input end of the controller, and the output end of the controller is connected to the input ends of all control valves, drive pumps (18) and flow regulating valves (19) respectively; The rotating shaft (11) is provided with a number of shaft connecting blocks (12) in a horizontal direction, and each shaft connecting block (12) is provided with a set of stirring hole plates (13). Each set of stirring perforated plates (13) consists of two upper and lower stirring perforated plates with a fan-shaped longitudinal section; the upper and lower stirring perforated plates form a V shape; there is a space between the two sets of stirring perforated plates; A hydrocyclone (20) is fixedly installed on the inner top wall and inner bottom wall of the water storage tank (4). The hydrocyclone (20) is located in the accommodating space. The hydrocyclone (20) is composed of two conical perforated plates connected together. The outer diameter of the two conical perforated plates gradually increases in the direction of the outer side. A certain distance is left between the two conical perforated plates and the rotating shaft (11) and the stirring space.

2. The dynamic groundwater circulation chemical reduction remediation system according to claim 1, characterized in that, Several pumping wells (1) extend into the area in the direction of the pollutant plume of the underground aquifer; several injection wells (2) extend into the areas on both sides of the pollutant plume of the underground aquifer.

3. The dynamic groundwater circulation chemical reduction remediation system according to claim 1, characterized in that, The heavy metal wastewater treatment tank (7) contains a heavy metal catching agent; the inlet pipe (16) is connected to the inlet tank, which contains a heavy metal catching agent.

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