高密度电法在污染场地调查中的应用研究

Application of high density electrical method in investigation of contaminated sites

通过高密度电法(ERT)进行污染场地的调查、识别污染物种类及分布范围等成为环境工程关注的热点。由于高密度电法准确、高效的工作方法和工作方式,其在实验室的研究和野外污染场地的调查中都得到了广泛的应用。本文利用高密度电法结合钻探取样研究某石油化工厂局部区域的土壤中含油污染物的分布情况,取得了良好的效果。结果显示:场地内6.5 m浅区域内存在不同程度的含油污染物扩散,含油污染物视电阻率值为5~23Ω·m,呈带状低阻分布,为污染场地的后续调查、整治和修复提供重要的基础。

Investigation of contaminated sites through the use of high-density electrical methods(ERT)has become a focus of attention in environmental engineering.Due to the accurate and efficient working methods and working methods of high-density electrical methods,it has been widely used in laboratory research and investigation of field contamination sites.In this paper,high-density electricity combined with drilling sampling was used to study the distribution of oil contaminants in the soil of a certain petrochemical plant,and good results were obtained.The results showed that there were different degrees of diffusion of oily pollutants in the 6.5 m shallow area of the site.The apparent resistivity of the oily pollutants was 5-23 ohm meters,showing a low-resistance strip distribution,which was the follow-up investigation,remediation and repair of the contaminated sites.Provide important basic support.