DETERMINATION OF GROUNDWATER RISK CONTROL VALUE OF A POLLUTED LAND BASED ON NUMERICAL SIMULATION

WANG Cheng; CHENG Jian; NIU Haobo; GONG Zhiqiang

doi:10.13205/j.hjgc.202211022

Volume 40 Issue 11

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(11): 159-164

WANG Cheng, CHENG Jian, NIU Haobo, GONG Zhiqiang. DETERMINATION OF GROUNDWATER RISK CONTROL VALUE OF A POLLUTED LAND BASED ON NUMERICAL SIMULATION[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 159-164. doi: 10.13205/j.hjgc.202211022

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WANG Cheng, CHENG Jian, NIU Haobo, GONG Zhiqiang. DETERMINATION OF GROUNDWATER RISK CONTROL VALUE OF A POLLUTED LAND BASED ON NUMERICAL SIMULATION[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 159-164. doi: 10.13205/j.hjgc.202211022

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DETERMINATION OF GROUNDWATER RISK CONTROL VALUE OF A POLLUTED LAND BASED ON NUMERICAL SIMULATION

doi: 10.13205/j.hjgc.202211022

1. Yangtze River Economic Zone Ecological Environment Joint Research Center, Chinese Academy for Environmental Planning, Beijing 100012, China;
2. School of Water Resources and Environments, China University of Geosciences(Beijing), Beijing 100083, China;
3. Hebei Key Laboratory of Geological Resources and Environment Monitoring and Protection, Hebei Geological Environmental Monitoring Institute, Shijiazhuang 052460, China

Received Date: 2021-12-20
Available Online: 2023-03-24

Abstract

Abstract

Aiming at the difficult problems of determining the target value of groundwater risk management and control, this article took an abandoned ferroalloy plant as the research object, and discussed the environmental impact of hexavalent chromium pollution in groundwater on the downstream sensitive target rivers. Numerical simulation methods were used to determine the pollution under hydraulic interception conditions, the target value of groundwater risk management and control of the plot. The results showed that:under natural conditions, after 2500 days, the pollution plume with hexavalent chromium concentration greater than 0.5 mg/L will migrate to the river; under hydraulic interception condition, when the hydraulic interception of the hexavalent chromium concentration was above 10 mg/L of the pollution plume, the highest concentration of hexavalent chromium discharged to the river was 0.46 mg/L, achieving the purpose of groundwater risk management and control. It's finally determined that the groundwater risk control value of this site was 10 mg/L, which reduced the area of groundwater risk control by about 9.45 m² and saved the cost of sewage treatment. This study provides support for determining the target value of groundwater risk management and control, and preparation of groundwater remediation plans for contaminated land in China.
- GMS,
- hydraulic interception,
- groundwater remediation target value,
- groundwater risk control target value

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References

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