Storage yard vertical ecological barrier system and construction method

Abstract

The invention provides a vertical ecological barrier system for a storage yard and a construction method. The vertical ecological barrier system solves the problem that in the prior art, rigid or flexible vertical barrier is adopted, and single extraction treatment is adopted, so that the restoration effect is poor. The vertical ecological barrier system of the storage yard comprises a permeable reactive barrier, a monitoring system, an injection system and a control center, the permeable reactive barrier stretches across a migration path of polluted underground water, the lower end of the permeable reactive barrier stretches into an impermeable layer, and the monitoring system and the injection system are located on the upstream of the permeable reactive barrier. The monitoring system is used for monitoring the pollution condition of the polluted underground water and transmitting monitoring data to the control center, and the control center controls the injection system to inject the remediation agent into the polluted underground water according to the monitoring data. The method has the advantages of good remediation effect, low application cost, multiple remediation safeguard measures and the like, ensures the safety of soil and underground water environment around the storage yard of red mud and the like, and provides precious development time for gradual large-scale recycling of bulk solid wastes such as red mud and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of groundwater prevention and control in storage yards, and relates to a vertical ecological barrier system for a storage yard and a construction method thereof. Background Art

[0002] Red mud, also known as red mud, is the waste residue produced when the aluminum industry extracts alumina from bauxite. It has a high iron oxide content and is a polluting waste. The production and stacking of red mud will not only pollute land resources, but also pollute the environment, bring great harm to the environment, seriously damage people's production and life, and cause direct or indirect impacts. Red mud is a strong alkaline solid waste produced in the production process of the alumina industry. It is difficult to utilize resources and has high environmental risks. Most of the red mud is handled by yards, landfills, etc. The environmental safety issues caused by the storage of red mud are seriously threatening the sustainable development of the alumina industry and the ecological development of the surrounding environment. In recent years, many soil and groundwater pollution accidents caused by the storage of red mud have occurred in Luoyang, Henan, Liaocheng, Shandong, Guiyang, Guizhou, Jingxi, Guangxi, etc., which have had a significant impact on the environmental safety and residents' lives in the surrounding areas.

[0003] The comprehensive utilization rate of red mud is low, the natural weathering process is slow, plants are difficult to grow, and the ecological reconstruction of the storage site is difficult. It is urgent and necessary to establish a groundwater ecological barrier system for the storage site based on the current situation, which also provides precious development time for the gradual large-scale resource utilization of red mud. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the prior art and to propose a vertical ecological barrier system for a storage yard that can ensure the safety of the soil and groundwater environment around the storage yard.

[0005] A construction method of a vertical ecological barrier system for a storage yard which is easy to construct is also proposed.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The vertical ecological barrier system of the storage yard includes a permeable reaction wall, a monitoring system, an injection system and a control center. The permeable reaction wall spans the migration path of the contaminated groundwater and is used to intercept and repair the contaminated groundwater, and the lower end of the permeable reaction wall extends into the impermeable layer. The monitoring system and the injection system are located upstream of the permeable reaction wall. The monitoring system is used to monitor the contamination of the contaminated groundwater and transmit the monitoring data to the control center. The control center controls the injection system to inject repair agents into the contaminated groundwater according to the monitoring data.

[0008] When the monitoring system detects that the contaminated groundwater is contaminated, it transmits the signal to the control center, which processes and analyzes the pollution situation, controls the injection system to select a suitable preset injection plan and injects remediation agents into the contaminated groundwater. Finally, the water that flows downstream of the permeable reaction wall through the permeable reaction wall is uncontaminated groundwater.

[0009] In the above-mentioned vertical ecological barrier system of the storage yard, the monitoring system includes a monitoring well and a water quality sensor. The monitoring well includes a first well wall pipe and a first water filter pipe. The first water filter pipe is located in the migration path of the contaminated groundwater. The water quality sensor is located in the first water filter pipe and in contact with the contaminated groundwater. The water quality sensor is connected to the control center.

[0010] The first well wall pipe is located above the first water filter pipe. The first water filter pipe allows groundwater to flow into the well and blocks solid particles from entering the well. The water quality sensor is responsible for real-time monitoring of groundwater pollution, including alkaline ions (free alkali, chemically bound alkali, etc.), pH, fluoride, total hardness and SO4 2- , chloride, nitrate, nitrite, ammonia nitrogen, permanganate index, arsenic, mercury, aluminum, chromium, manganese, iron, copper, lead, cadmium, zinc and other data, and transmit the data to the control center, which processes and analyzes the data. The control center mainly includes a PLC controller, and the signal output end of the water quality sensor is connected to the signal input end of the PLC controller through a wire.

[0011] In the above-mentioned vertical ecological barrier system of the yard, the injection system includes an injection well, a chemical storage tank and a chemical mixing tank. The injection well includes a second well wall pipe and a second water filter pipe. The second water filter pipe intersects with the migration path of the contaminated groundwater, and the length of the second water filter pipe is greater than the upper and lower heights of the migration path of the contaminated groundwater; the outlet of the chemical storage tank is connected to the inlet of the chemical mixing tank through a first pipeline, and the chemical mixing tank is provided with an agitator driven by a motor. The outlet of the chemical mixing tank is connected to the injection well through a second pipeline. The first pipeline is provided with a first solenoid valve controlled by a control center, and the second pipeline is provided with a second solenoid valve controlled by the control center.

[0012] There are multiple medicine storage tanks, each storing different medicines. Each medicine storage tank is connected to the medicine mixing tank through a first pipeline. The first solenoid valve on each first pipeline is controlled by a PLC controller, and the second solenoid valve on the second pipeline is also controlled by the PLC controller. At the same time, the PLC controller also controls the action of the agitator.

[0013] The water quality sensor transmits the monitoring data to the PLC controller, which obtains the required repair agent after processing and analysis, and then controls the corresponding first solenoid valve to open, injects the corresponding agent into the agent mixing tank in proportion, and then controls the motor to make the agitator stir, and finally controls the second solenoid valve to open, and injects the stirred and mixed repair agent into the injection well.

[0014] In the above-mentioned vertical ecological barrier system of the storage yard, an extraction mechanism is provided downstream of the monitoring system, and the extraction mechanism includes an extraction well and a vacuum extraction unit. The extraction well includes a third well wall pipe and a third water filter pipe. The lower end of the third water filter pipe is lower than the migration path of the contaminated groundwater, and the upper end thereof is higher than the migration path of the contaminated groundwater. The vacuum extraction unit includes a water pumping pipe and a water pump. One end of the water pumping pipe extends into the third water filter pipe, and the other end thereof is connected to the water treatment mechanism. The water pump is provided on the water pumping pipe and is controlled by the control center.

[0015] When the monitoring system detects that the flow rate of contaminated groundwater is relatively high, the contaminated groundwater can be extracted through an extraction mechanism, treated by a water treatment mechanism, and then led back to the groundwater migration path, thereby improving the efficiency of water treatment.

[0016] In the above-mentioned yard vertical ecological barrier system, the water treatment mechanism includes a water reservoir, the outlet of the above-mentioned chemical mixing tank is connected to the water reservoir through a third pipeline, and the third pipeline is provided with a third solenoid valve controlled by the control center. The water outlet of the water reservoir is connected to the injection well through a fourth pipeline, and the fourth pipeline is provided with a fourth solenoid valve controlled by the control center.

[0017] On rainy days, more water flows into the groundwater, resulting in a higher groundwater flow rate. It is difficult to achieve the purpose of repairing water resources by injecting remediation agents into the contaminated groundwater through injection wells alone. At this time, a combination of pumping and injection can be adopted to improve the efficiency of remediation. After the pump pumps the contaminated groundwater into the reservoir, the remediation agent is added to the reservoir through the agent mixing tank. The water that meets the remediation standards flows back to the migration path of the groundwater through the fourth pipeline and the injection well.

[0018] In the above-mentioned vertical ecological barrier system of the storage yard, a long-term monitoring system is provided downstream of the permeable reaction wall, and the long-term monitoring system includes a long-term monitoring well and a water quality sensor. The long-term monitoring well includes a fourth well wall pipe and a fourth water filter pipe. The fourth water filter pipe is located in the migration path of unpolluted groundwater. The water quality sensor is located in the fourth water filter pipe and in contact with the unpolluted groundwater. The water quality sensor is connected to the control center.

[0019] Through long-term monitoring system, groundwater alkaline ions (free alkali, chemically bound alkali, etc.), pH, fluoride, total hardness and SO4 2-, chloride, nitrate, nitrite, ammonia nitrogen, permanganate index, arsenic, mercury, aluminum, chromium, manganese, iron, copper, lead, cadmium, zinc and other indicators are tested to ensure that there is no risk to groundwater and the barrier system continues to be effective.

[0020] After the construction of the vertical ecological barrier system of the storage yard is completed, the appropriate water treatment method is selected according to the groundwater risk level. When the risk level is low, the remediation agent can be injected into the contaminated groundwater through the injection well; when the risk level is medium, the contaminated groundwater can be pumped out and treated through the extraction well; when the risk level is high, the pumping and injection are combined, and the remediation agent is injected into the contaminated groundwater through the injection well while the contaminated groundwater is pumped out.

[0021] Alternatively, the extraction mechanism and injection system can be operated simultaneously, combining extraction and injection. For high-concentration and high-risk groundwater, it can be directly extracted for treatment and then re-injected after the treatment meets the standards. The operation of the extraction mechanism can change the hydraulic gradient of groundwater, expand the repair area of ​​the injection well repair agent, and enhance the repair effect.

[0022] The remediation agent is an environmentally friendly agent that can eliminate or mitigate the high alkalinity of red mud contamination of groundwater. The permeable reaction wall serves as a double guarantee to further intercept and repair contaminated groundwater and eliminate the risk of groundwater pollution.

[0023] A method for constructing a vertical ecological barrier system of a storage yard comprises the following steps:

[0024] S1. Conduct on-site investigation of the storage yard, fully understand the storage yard environment, geological conditions, groundwater level, storage yard anti-seepage structure, etc., and preliminarily determine the groundwater risk area;

[0025] S2. Deploy monitoring wells downstream of the storage yard and install water quality sensors to conduct long-term monitoring of groundwater conditions using the water quality sensors in the monitoring wells;

[0026] S3. Determine the risk area and scope of groundwater according to the monitoring data of the water quality sensor, and determine the migration path of polluted groundwater; if the groundwater detection data shows that there is a risk of groundwater pollution, it means that there are cracks and leakage risks in the storage yard, and on the one hand, the storage yard needs to be inspected and the anti-seepage structure repaired; for the groundwater pollution that has been sent, the embodiment steps S4-S7;

[0027] S4. Deploy extraction wells in the risk areas of groundwater, install vacuum extraction units in the extraction wells, and extract and treat highly polluted groundwater;

[0028] S5. Deploy injection wells downstream of the groundwater risk area and inject remediation agents into the contaminated groundwater through the injection wells;

[0029] S6. construct a permeable reaction wall downstream of the extraction well and the injection well, wherein the lower end of the permeable reaction wall extends into the impermeable layer;

[0030] S7. Long-term monitoring wells are arranged downstream of the permeable reaction wall, and water quality sensors are installed in the long-term monitoring wells to conduct long-term monitoring of groundwater passing through the permeable reaction wall.

[0031] In the method for constructing the vertical ecological barrier system of the above-mentioned storage yard, in step S5, the migration of the repair agent can be promoted by pumping out the well to accelerate the adsorption reaction.

[0032] Taking the contaminated groundwater in red mud dump as an example, the remediation agents are mainly organic acids (mainly citric acid and oxalic acid), inorganic acids (mainly modified waste acids), calcium salts, and iron oxides to improve and repair highly alkaline contaminated groundwater.

[0033] In the above-mentioned method for constructing the vertical ecological barrier system of the landfill, the permeable reaction wall is made of reaction materials as raw materials and is sprayed by high-pressure rotary spraying equipment. The ratio of the reaction materials is adjusted according to the characteristics of the pollutants that pollute the groundwater. For example, the reaction materials located downstream of the red mud landfill are composed of modified phosphogypsum, modified desulfurized gypsum, CaCl2, MgCl2, clay minerals and cement. The permeability coefficient of the permeable reaction wall is at least twice the permeability coefficient of the aquifer.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] The monitoring system, extraction structure, injection system, permeable reaction wall and long-term monitoring system are used to complete the remediation and risk control of groundwater contaminated with high alkalinity. Compared with traditional rigid or flexible vertical barriers and single extraction treatment, it has the advantages of good remediation effect, low application cost and multiple remediation guarantee measures. It ensures the safety of the soil and groundwater environment around red mud storage sites and provides precious development time for the gradual large-scale resource utilization of red mud. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the vertical ecological barrier system of the storage yard provided by the present invention.

[0037] Figure 2 It is a control block diagram of the vertical ecological barrier system of the storage yard provided by the present invention.

[0038] In the figure, a, storage yard; b1, contaminated groundwater; b2, uncontaminated groundwater; c, impermeable layer; 1, permeable reaction wall; 2, monitoring system; 21, monitoring well; 3, injection system; 31, injection well; 4, extraction mechanism; 41, extraction well; 5, long-term monitoring system; 51, long-term monitoring well. DETAILED DESCRIPTION

[0039] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0040] like Figure 1 The vertical ecological barrier system of the storage yard shown includes a permeable reaction wall 1, a monitoring system 2, an injection system 3 and a control center. The permeable reaction wall 1 spans the migration path of the contaminated groundwater b1 and is used to intercept and repair the contaminated groundwater. The lower end of the permeable reaction wall 1 extends into the impermeable layer c. The permeable reaction wall 1 in this embodiment is arranged around the storage yard a.

[0041] In other embodiments, in order to save costs, the permeable reaction wall only spans the migration path of the contaminated groundwater b1, which is generally 1 / 5 to 1 / 2 of the path surrounding the storage yard a.

[0042] The permeable reaction wall 1 is made of reaction materials as raw materials and is sprayed by high-pressure rotary spraying equipment. For the red mud dump, the reaction materials are composed of modified phosphogypsum, modified desulfurized gypsum, CaCl2, MgCl2, clay minerals and cement, so that the permeability coefficient of the permeable reaction wall 1 is at least twice the permeability coefficient of the aquifer.

[0043] like Figure 1 As shown, the monitoring system 2 and the injection system 3 are located upstream of the permeable reaction wall 1. The monitoring system 2 is used to monitor the pollution situation of the contaminated groundwater b1 and transmit the monitoring data to the control center. The control center controls the injection system 3 to inject remediation agents into the contaminated groundwater b1 according to the monitoring data. The remediation agents are mainly organic acids (mainly citric acid and oxalic acid), inorganic acids (mainly modified waste acids), calcium salts, and iron oxides to improve and repair the highly alkaline contaminated groundwater b1. An extraction mechanism 4 is provided downstream of the monitoring system 2.

[0044] When the monitoring system 2 detects that the groundwater is contaminated, it transmits the signal to the control center, which processes and analyzes the contamination situation, controls the injection system 3 to select a suitable preset injection scheme and injects the repair agent into the contaminated groundwater b1, and finally, the water flowing to the downstream of the permeable reaction wall 1 after infiltration through the permeable reaction wall 1 is the uncontaminated groundwater b2. At the same time, the contaminated groundwater b1 can be extracted through the extraction mechanism, and the migration of the repair agent can be promoted through the extraction well 41 to accelerate the adsorption reaction. After the contaminated groundwater b1 is treated by the water treatment mechanism, it is then led back to the groundwater migration path.

[0045] like Figure 1 As shown, the monitoring system 2 includes a monitoring well 21 and a water quality sensor. The monitoring well 21 includes a first well wall pipe and a first water filter pipe. The first water filter pipe is located in the migration path of the contaminated groundwater b1. The water quality sensor is located in the first water filter pipe and contacts with the contaminated groundwater b1. Figure 2As shown, the water quality sensor is connected to the control center.

[0046] The first well wall pipe is located above the first water filter pipe. The first water filter pipe allows groundwater to flow into the well and blocks solid particles from entering the well. The water quality sensor is responsible for real-time monitoring of groundwater pollution, including alkaline ions (free alkali, chemically bound alkali, etc.), pH, fluoride, total hardness and SO4 2- , chloride, nitrate, nitrite, ammonia nitrogen, permanganate index, arsenic, mercury, aluminum, chromium, manganese, iron, copper, lead, cadmium, zinc and other data, and transmit the data to the control center, which processes and analyzes the data. The control center mainly includes a PLC controller, and the signal output end of the water quality sensor is connected to the signal input end of the PLC controller through a wire.

[0047] like Figure 1 As shown, the injection system 3 includes an injection well 31, a reagent storage tank and a reagent mixing tank. The injection well 31 includes a second well wall pipe and a second water filter pipe. The second water filter pipe intersects with the migration path of the contaminated groundwater b1, and the length of the second water filter pipe is greater than the upper and lower heights of the migration path of the contaminated groundwater b1; the outlet of the reagent storage tank is connected to the inlet of the reagent mixing tank through a first pipeline, and a stirrer driven by a motor is provided in the reagent mixing tank. The outlet of the reagent mixing tank is connected to the injection well 31 through a second pipeline. Figure 2 As shown, a first solenoid valve controlled by a control center is provided on the first pipeline, and a second solenoid valve controlled by the control center is provided on the second pipeline.

[0048] There are multiple medicine storage tanks, each storing different medicines. Each medicine storage tank is connected to the medicine mixing tank through a first pipeline. The first solenoid valve on each first pipeline is controlled by a PLC controller, and the second solenoid valve on the second pipeline is also controlled by the PLC controller. At the same time, the PLC controller also controls the action of the agitator.

[0049] The water quality sensor transmits the monitoring data to the PLC controller, which obtains the required repair agent through processing and analysis, and then controls the corresponding first solenoid valve to open, injects the corresponding agent into the agent mixing tank in proportion, and then controls the motor to make the agitator stir, and finally controls the second solenoid valve to open, and injects the stirred and mixed repair agent into the injection well 31.

[0050] like Figure 1 As shown, the extraction mechanism 4 includes an extraction well 41 and a vacuum extraction unit. The extraction well 41 includes a third well wall pipe and a third water filter pipe. The lower end of the third water filter pipe is lower than the migration path of the contaminated groundwater b1, and the upper end thereof is higher than the migration path of the contaminated groundwater b1. The vacuum extraction unit includes a water extraction pipe and a water pump. One end of the water extraction pipe extends into the third water filter pipe, and the other end thereof is connected to the water treatment mechanism, as shown in FIG. Figure 2As shown, the water pump is arranged on the water pumping pipe and is controlled by the control center.

[0051] In this embodiment, the water treatment mechanism includes a water reservoir, the outlet of the reagent mixing tank is connected to the water reservoir through a third pipeline, a third solenoid valve controlled by a control center is provided on the third pipeline, and the water outlet of the water reservoir is connected to the injection well 31 through a fourth pipeline. Figure 2 As shown, the fourth pipeline is provided with a fourth solenoid valve controlled by the control center.

[0052] On rainy days, the infiltrated water flow is large, resulting in a large groundwater flow rate. It is difficult to achieve the purpose of repairing water resources by injecting the repair agent into the contaminated groundwater b1 through the injection well 31. At this time, a combination of pumping and injection can be adopted to improve the repair efficiency. After the pump pumps the contaminated groundwater b1 into the reservoir, the repair agent is added to the reservoir through the agent mixing tank. The repaired water that meets the standard flows back to the migration path of the groundwater through the fourth pipeline and the injection well 31.

[0053] like Figure 1 As shown, a long-term monitoring system 5 is provided downstream of the permeable reaction wall 1. The long-term monitoring system 5 includes a long-term monitoring well 51 and a water quality sensor. The long-term monitoring well 51 includes a fourth well wall pipe and a fourth water filter pipe. The fourth water filter pipe is located in the migration path of the uncontaminated groundwater b2. The water quality sensor is located in the fourth water filter pipe and is in contact with the uncontaminated groundwater b2. Figure 2 As shown, the water quality sensor is connected to the control center.

[0054] Through long-term monitoring system 5 groundwater alkaline ions (free alkali, chemically bound alkali, etc.), pH, fluoride, total hardness and SO4 2- , chloride, nitrate, nitrite, ammonia nitrogen, permanganate index, arsenic, mercury, aluminum, chromium, manganese, iron, copper, lead, cadmium, zinc and other indicators are tested to ensure that there is no risk to groundwater and the barrier system continues to be effective.

[0055] After the construction of the vertical ecological barrier system of the storage yard is completed, the appropriate water treatment method is selected according to the groundwater risk level. When the risk level is low, the remediation agent can be injected into the contaminated groundwater b1 through the injection well 31; when the risk level is medium, the contaminated groundwater b1 can be extracted and treated through the extraction well 41; when the risk level is high, the extraction and injection are combined, and the remediation agent is injected into the contaminated groundwater b1 through the injection well 31 while the contaminated groundwater b1 is extracted.

[0056] Alternatively, the extraction mechanism 4 and the injection system 3 can be operated simultaneously, and the extraction and injection can be combined. For high-concentration and high-risk groundwater, it can be directly extracted for treatment, and then re-injected after the treatment reaches the standard. The operation of the extraction mechanism 4 can change the hydraulic gradient of the groundwater, expand the repair area of ​​the injection well 31 repair agent, and enhance the repair effect.

[0057] The remediation agent is an environmentally friendly agent that can eliminate or mitigate the high alkalinity of red mud contaminating groundwater. The permeable reaction wall 1 can serve as a double guarantee to further intercept and repair the contaminated groundwater b1 and eliminate the risk of groundwater pollution.

[0058] In this embodiment, multiple monitoring systems 2, injection systems 3 and extraction mechanisms 4 can be set along the width direction of the migration path of the contaminated groundwater b1, and multiple long-term monitoring systems 5 can be set along the width direction of the migration path of the uncontaminated groundwater b2.

[0059] A method for constructing a vertical ecological barrier system of a storage yard comprises the following steps:

[0060] S1. Conduct on-site investigation of dumpsite a (such as red mud dumpsite), fully understand the dumpsite environment, geological conditions, groundwater level, dumpsite anti-seepage structure, etc., and preliminarily determine the groundwater risk area;

[0061] S2. A monitoring well 21 is arranged downstream of the storage yard a, and a water quality sensor is installed. The water quality sensor arranged in the monitoring well 21 is used to conduct long-term monitoring of the groundwater condition;

[0062] S3. Determine the risk area and scope of groundwater according to the monitoring data of the water quality sensor, and determine the migration path of the contaminated groundwater b1; if the groundwater detection data shows that there is a risk of groundwater contamination, it means that there are cracks and leakage risks in the storage yard a, and on the one hand, the storage yard a needs to be inspected and the anti-seepage structure repaired; for the sent groundwater pollution, the embodiment steps S4-S7;

[0063] S4, deploying an extraction well 41 in the risk area of ​​groundwater, and installing a vacuum extraction unit in the extraction well 41 to extract and treat the highly polluted groundwater b1;

[0064] S5, deploying an injection well 31 downstream of the groundwater risk area, and injecting a remediation agent into the contaminated groundwater b1 through the injection well 31;

[0065] S6. construct a permeable reaction wall 1 downstream of the extraction well 41 and the injection well 31, wherein the lower end of the permeable reaction wall 1 extends into the impermeable layer c;

[0066] S7. A long-term monitoring well 51 is arranged downstream of the permeable reaction wall 1 , and a water quality sensor is installed in the long-term monitoring well 51 to perform long-term monitoring of groundwater passing through the permeable reaction wall 1 .

[0067] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A vertical ecological barrier system for a storage yard, characterized in that: The invention comprises a permeable reaction wall (1), a monitoring system (2), an injection system (3) and a control center. The permeable reaction wall (1) spans the migration path of contaminated groundwater (b1) and is used to intercept and repair the contaminated groundwater. The lower end of the permeable reaction wall (1) extends into an impermeable layer (c). The monitoring system (2) and the injection system (3) are located upstream of the permeable reaction wall (1). The monitoring system (2) is used to monitor the contamination status of the contaminated groundwater (b1) and transmit the monitoring data to the control center. The control center controls the injection system (3) to inject a repair agent into the contaminated groundwater (b1) according to the monitoring data.

2. The vertical ecological barrier system of the storage yard according to claim 1 is characterized in that: The monitoring system (2) comprises a monitoring well (21) and a water quality sensor. The monitoring well (21) comprises a first well wall pipe and a first water filter pipe. The first water filter pipe is located within the migration path of the contaminated groundwater (b1). The water quality sensor is located within the first water filter pipe and in contact with the contaminated groundwater (b1). The water quality sensor is connected to a control center.

3. The vertical ecological barrier system of the storage yard according to claim 1 is characterized in that: The injection system (3) comprises an injection well (31), a reagent storage tank and a reagent mixing tank. The injection well (31) comprises a second well wall pipe and a second water filter pipe. The second water filter pipe intersects with the migration path of the contaminated groundwater (b1), and the length of the second water filter pipe is greater than the upper and lower heights of the migration path of the contaminated groundwater (b1). The outlet of the reagent storage tank is connected to the inlet of the reagent mixing tank through a first pipeline. The reagent mixing tank is provided with a stirrer driven by a motor. The outlet of the reagent mixing tank is connected to the injection well (31) through a second pipeline. The first pipeline is provided with a first solenoid valve controlled by a control center, and the second pipeline is provided with a second solenoid valve controlled by the control center.

4. The vertical ecological barrier system for a storage yard according to claim 3 is characterized in that: A pumping mechanism (4) is provided downstream of the monitoring system (2), the pumping mechanism (4) comprising a pumping well (41) and a vacuum extraction unit, the pumping well (41) comprising a third well wall pipe and a third water filter pipe, the lower end of the third water filter pipe being lower than the migration path of the contaminated groundwater (b1), and the upper end thereof being higher than the migration path of the contaminated groundwater (b1), the vacuum extraction unit comprising a pumping pipe and a pump, one end of the pumping pipe extending into the third water filter pipe, and the other end thereof being connected to the water treatment mechanism, the pumping pump being provided on the pumping pipe and being controlled by a control center.

5. The vertical ecological barrier system for a storage yard according to claim 4 is characterized in that: The water treatment mechanism comprises a water reservoir, the outlet of the above-mentioned reagent mixing tank is connected to the water reservoir via a third pipeline, a third solenoid valve controlled by a control center is arranged on the third pipeline, the water outlet of the water reservoir is connected to an injection well (31) via a fourth pipeline, a fourth solenoid valve controlled by the control center is arranged on the fourth pipeline.

6. The vertical ecological barrier system for a storage yard according to claim 1 is characterized in that: A long-term monitoring system (5) is provided downstream of the permeable reaction wall (1), and the long-term monitoring system (5) comprises a long-term monitoring well (51) and a water quality sensor. The long-term monitoring well (51) comprises a fourth well wall pipe and a fourth water filter pipe. The fourth water filter pipe is located within the migration path of the uncontaminated groundwater (b2). The water quality sensor is located within the fourth water filter pipe and in contact with the uncontaminated groundwater (b2). The water quality sensor is connected to a control center.

7. A method for constructing a vertical ecological barrier system of a storage yard, comprising the following steps: S1. Conduct on-site investigation of the storage yard (a), fully understand the storage yard environment, geological conditions, groundwater level, storage yard anti-seepage structure, etc., and preliminarily determine the groundwater risk area; S2. A monitoring well (21) is arranged downstream of the storage yard (a), and a water quality sensor is installed. The water quality sensor installed in the monitoring well (21) is used to conduct long-term monitoring of groundwater conditions; S3. Determine the risk area and scope of groundwater based on the monitoring data of water quality sensors, and determine the migration path of contaminated groundwater (b1); S4, deploying an extraction well (41) in the risk area of ​​groundwater, and installing a vacuum extraction unit in the extraction well (41) to extract and treat the highly polluted groundwater (b1); S5. Arrange an injection well (31) downstream of the groundwater risk area, and inject a remediation agent into the contaminated groundwater (b1) through the injection well (31); S6. constructing a permeable reaction wall (1) downstream of the extraction well (41) and the injection well (31), wherein the lower end of the permeable reaction wall (1) extends into the impermeable layer (c); S7. A long-term monitoring well (51) is arranged downstream of the permeable reaction wall (1), and a water quality sensor is arranged in the long-term monitoring well (51) to perform long-term monitoring of groundwater passing through the permeable reaction wall (1).

8. The method for constructing a vertical ecological barrier system of a storage yard according to claim 7, characterized in that: In step S5, the migration of the repair agent can be promoted by pumping out the well (41) to accelerate the adsorption reaction.

9. The method for constructing a vertical ecological barrier system of a storage yard according to claim 7, characterized in that: The permeable reaction wall (1) is made of reaction materials as raw materials and is formed by injection molding using high-pressure rotary jet equipment. The proportion of the reaction materials is adjusted according to the characteristics of the pollutants that pollute the groundwater. The permeability coefficient of the permeable reaction wall (1) is at least twice the permeability coefficient of the aquifer.

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