Journal of Ecology and Rural Environment ›› 2016, Vol. 32 ›› Issue (4): 670-674.doi: 10.11934/j.issn.1673-4831.2016.04.024

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Case Study On Ex-situ Remediation of Chlorobenzene-Like Volatile Organic Compounds (VOCs) Contaminated Soil With Technique of Low-Temperature Thermal Desorption

WANG Xiang-hui1, ZHU Xin2, LONG Tao2, DENG Shao-po2, LIN Yu-suo2, HU Tao3   

  1. 1. Shanghai SUS Environment Co. Ltd, Shanghai 200040, China;
    2. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China;
    3. Nanjing Yanziji Regulation & Development Co. Ltd, Nanjing 210028, China
  • Received:2015-07-13 Online:2016-07-25 Published:2016-07-26


The technique of low-temperature thermal desorption was used to remedy chlorobenzene-like VOCs contaminated soil. Results show that VOCs were effectively removed after the treatment, with removal rate reaching 85% or more for all the tested VOCs. In field trials, a specialized soil remediation machine KH200 was used to crush the soil and have it mixed with lime in full-closed operation to avoid dust pollution. Through raising soil temperature and lowering soil water content, desorption and volatilization of VOC was effectively accelerated. All the findings in the experiment demonstrate that the use of the technique of low-temperature thermal desorption and the KH200 equipment is a promising approach to efficient and low cost remediation of contaminated soils in sites of deserted chemical plants.

Key words: soil remediation equipment, low-temperature thermal desorption, chlorobenzene, VOCs, ex-situ soil remediation technology

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