化工企业搬迁遗留污染场地人体健康风险评估—以某印染化工遗留污染场地为例

Health Risk Assessment in Contaminated Sites of Relocated Chemical Enterprises—A Case Study of Dyeing Chemical Contaminated Site

本文以天津市某化工企业搬迁遗留污染场地为例,在第一阶段和第二阶段污染场地环境调查的基础上,通过危害识别、暴露情景分析以及暴露途径分析等方法,建立了该场地的概念模型。通过风险计算,确定场地内苯等9种污染物的致癌风险或非致癌危害商超过风险可接受水平,该场地需进行后续修复工作,并确定了该场地的修复目标,初步划定了场地的修复范围,并提出后续场地环境管理的建议。

Based on the Stage I and Stage II environmental investigation of a chemical enterprise contami-nated sites in Tianjin, this paper established the conceptual model of the contaminated site by means of hazard identification, exposure scenario analysis and exposure path analysis. Through the calculation of health risk values, the carcinogenic risk and the hazard quotient of 9 kinds of pollutants such as benzene in this site exceed the acceptable level. So the contaminated site needed to be repaired. The restoration target and remediation scope of this contaminated site were defined. At last, the recommendations for the environmental management of the site were presented.