天然气制甲醇企业拟退役场地污染特征调查研究

Investigations on contamination characteristics of decommissioning site of a methanol plant based on natural gas

对天然气制甲醇企业拟退役场地的土壤环境质量进行了场地历史和现状调查、场地污染识别、土壤和地下水布点采样、土壤和地下水监测项目确定和分析,通过分析拟退役场地土壤的理化性质监测项目、砷及重金属污染物浓度的散点分布规律,确定拟退役场地为非污染场地,满足场地后期规划用途为居住用地的要求。

The site history and status of soil environmental quality of the decommissioning site of a methanol plant based on natural gas were investigated,followed by site contamination identification,layout of soil and groundwater sampling points and performance of sampling activity,determination of items to be analyzed for soil and groundwater and their analysis.Upon analysis of the scatter distribution law of physical and chemical properties test items and arsenic and heavy metals pollutant concentration of the soil from proposed decommissioning site,consequently this decommissioning site was defined to be free of the contaminated site,of which the land meet the requirements for residential purpose as planned at later stage.