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A Comprehensive Evaluation Method for Soil Remediation Technology Selection: Case Study of Ex Situ Thermal Desorption

Author

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  • Shuang Li

    (State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
    College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China)

  • Liao He

    (State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China)

  • Bo Zhang

    (State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China)

  • Yan Yan

    (State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
    College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China)

  • Wentao Jiao

    (State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China)

  • Ning Ding

    (State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China)

Abstract

Quantitative evaluation of different contaminated soil remediation technologies in multiple dimensions is beneficial for the optimization and comparative selection of technology. Ex situ thermal desorption is widely used in remediation of organic contaminated soil due to its excellent removal effect and short engineering period. In this study, a comprehensive evaluation method of soil remediation technology, covering 20 indicators in five dimensions, was developed. It includes the steps of constructing an indicator system, accounting for the indicator, normalization, determining weights by analytic hierarchy process, and comprehensive evaluation. Three ex situ thermal desorption technology—direct thermal desorption, indirect thermal desorption, and indirect thermal heap—in China were selected for the model validation. The results showed that the direct thermal desorption had the highest economic and social indicator scores of 0.068 and 0.028, respectively. The indirect thermal desorption had the highest technical and environmental indicator scores of 0.118 and 0.427, respectively. The indirect thermal heap had the highest resource indicator score of 0.175. With balanced performance in five dimensions, the indirect thermal desorption had the highest comprehensive score of 0.707, which is 1.6 and 1.4 times higher than the direct thermal desorption and indirect thermal heap, respectively. The comprehensive evaluation method analyzed and compared the characteristics of the ex situ thermal desorption technology from different perspectives, such as specific indicators, multiple dimensions, and single comprehensive values. It provided a novel evaluation approach for the sustainable development and application of soil remediation technology.

Suggested Citation

  • Shuang Li & Liao He & Bo Zhang & Yan Yan & Wentao Jiao & Ning Ding, 2022. "A Comprehensive Evaluation Method for Soil Remediation Technology Selection: Case Study of Ex Situ Thermal Desorption," IJERPH, MDPI, vol. 19(6), pages 1-16, March.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:6:p:3304-:d:768827
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    References listed on IDEAS

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    1. Ding, Ning & Liu, Jingru & Yang, Jianxin & Yang, Dong, 2017. "Comparative life cycle assessment of regional electricity supplies in China," Resources, Conservation & Recycling, Elsevier, vol. 119(C), pages 47-59.
    2. Ning Ding & Ning Liu & Bin Lu & Jianxin Yang, 2021. "Life cycle greenhouse gas emissions of aluminum based on regional industrial transfer in China," Journal of Industrial Ecology, Yale University, vol. 25(6), pages 1657-1672, December.
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    Cited by:

    1. Hanlin Feng & Jiemin Cheng, 2023. "Whole-Process Risk Management of Soil Amendments for Remediation of Heavy Metals in Agricultural Soil—A Review," IJERPH, MDPI, vol. 20(3), pages 1-14, January.
    2. Liping Li & Lanfang Han & Aiju Liu & Fayuan Wang, 2022. "Imperfect but Hopeful: New Advances in Soil Pollution and Remediation," IJERPH, MDPI, vol. 19(16), pages 1-3, August.
    3. Jiao Jiang & Abudukeyimu Abulizi & Abdugheni Abliz & Abudoukeremujiang Zayiti & Adila Akbar & Bin Ou, 2022. "Construction of Landscape Ecological Security Pattern in the Zhundong Region, Xinjiang, NW China," IJERPH, MDPI, vol. 19(10), pages 1-15, May.

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