“双碳”目标下污染场地原位热处理技术发展趋势

原位热处理技术可以在低地下扰动的前提下实现污染场地快速高效的修复，已成为高浓度挥发/半挥发性有机物污染场地修复的热门技术之一。然而，传统原位热处理技术存在能耗和碳排放较高的弊端，限制了其大范围推广应用。在“碳达峰、碳中和”的战略目标下，亟需开展原位热处理技术的优化研究以降低其能效比。通过国内外实验研究与工程案例的整理分析，识别原位热处理活动中的碳排放和能耗的关键工艺环节，进而提出该技术低碳化发展的主要方向；同时梳理原位热处理工艺中应用再生能源和技术优化的研究进展，展望“双碳”目标下该技术的重点研究方向。目前已获得的研究结果表明，通过应用可再生能源和技术优化有望实现原位热修复工艺的大幅减排。

Discussion on development trend of in-situ thermal treatment technology for contaminated sites under dual-carbon target

In-situ thermal treatment technology can achieve rapid and efficient remediation of contaminated sites with low underground disturbance, and has become one of the most popular remediation technologies for contaminated sites with high concentration of volatile/semi-volatile organic compounds. However, this technology has the drawbacks of high energy consumption and carbon emissions, which limits its wide-scale popularization and application. Under the strategic target of “carbon peak, carbon neutrality”, it is urgent to carry out process optimization of this technology. Through the analysis of domestic and foreign experimental studies and engineering cases, the key processes of carbon emission and energy consumption in in-situ thermal treatment activities were identified, and the main direction of low-carbon development of the technology was proposed. Then, the application of renewable energy in in-situ thermal treatment and the optimization of in-situ thermal treatment technology at the technical aspects was reviewed. Finally, the future research direction of this technology under the target of “dual carbon” was prospected. The results obtained so far showed that the carbon emissions of in-situ thermal treatment processes were expected to be significantly reduced through renewable energy applications and technological optimization.