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Yang W.,Tianjin University | Yang W.,Tianjin Eco City Environmental Protectiono Co. | Yang W.,Tianjin Contaminated Site Remediation Technology Engineering Center | Yang W.,Tianjin Eco City Environmental Test Center Co. | And 18 more authors.
Chinese Journal of Environmental Engineering | Year: 2015

Thermal enhanced soil vapor extraction (SVE) has been effectively used for removal of volatile organic compounds (VOCs) from unsaturated soil. To explore the effectiveness of radio frequency heating enhanced SVE, a field demonstration of SVE remediation was carried out in Tianjin, and the impact of anode connection was studied. The results showed that excellent heating effect was achieved with paralleled anode, the temperature improved by 40℃ after 10 days. The temperature of the contaminated sites and the concentration of TVOCs decreased with the increase of SVE time. Two months after remedy, the 90% TVOCs were removed in middle-shallow soil and 64% were removed in depth. ©, 2015, Science Press. All right reserved.

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