RESEARCH PROGRESS OF ELECTRICAL RESISTANCE HEATING FOR SOIL REMEDIATION

CHEN Zhikang; LIU Liujun; YIN Lipu; YUE Rui; MAO Xuhui

doi:10.13205/j.hjgc.202204032

Volume 40 Issue 4

Apr. 2022

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CHEN Zhikang, LIU Liujun, YIN Lipu, YUE Rui, MAO Xuhui. RESEARCH PROGRESS OF ELECTRICAL RESISTANCE HEATING FOR SOIL REMEDIATION[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(4): 224-234,243. doi: 10.13205/j.hjgc.202204032

Citation:

CHEN Zhikang, LIU Liujun, YIN Lipu, YUE Rui, MAO Xuhui. RESEARCH PROGRESS OF ELECTRICAL RESISTANCE HEATING FOR SOIL REMEDIATION[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(4): 224-234,243. doi: 10.13205/j.hjgc.202204032

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RESEARCH PROGRESS OF ELECTRICAL RESISTANCE HEATING FOR SOIL REMEDIATION

doi: 10.13205/j.hjgc.202204032

1. School of Resources and Environmental Sciences, Wuhan University, Wuhan 430079, China;
2. China State Science Dingshi Environmental Engineering Corporation Limited, Beijing 100101, China

Received Date: 2021-07-29
Available Online: 2022-07-06

Abstract

Abstract

There are currently a large number of contaminated sites with complex geological conditions in China. Conventional technologies like soil vapor extraction are inefficient in remediating these sites quickly and effectively. Electrical resistance heating (ERH) technology is less affected by soil heterogeneity, and it has a large processing depth and a fast heating speed. It could quickly and effectively remove volatile organic compounds from the unsaturated and saturated zone in soil with complex geological conditions. However, the application of ERH in China begins relatively late, and there are few application cases. To support the further research and application of ERH, this paper first introduces the remediation mechanism of ERH (including promoting the evacuation of pollutants and increasing the degradation rate of pollutants) and how factors such as soil conductivity, electric field strength, groundwater flow and soil heterogeneity affect the efficiency of ERH remediation. The coupling of ERH with other in-situ remediation technologies were reviewed as well. It also describes how to deploy electrode wells and equipment during an ERH process implemented on site. Finally, related soil remediation cases using ERH technologies are discussed, and the future direction of ERH research is pointed out.
- electrical resistance heating,
- soil remediation,
- in-situ thermal treatment,
- azeotrope,
- environment

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References(108)

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