黔南州某关停搬迁磷化工生产企业场地环境调查及其健康风险评估

Site environmental investigation and health risk assessment of a discarded phosphorus chemical production enterprise in Qiannan

以黔南州某关停搬迁磷化工生产企业为研究对象,设置11个土壤检测点,3个废渣检测点,1个废水检测点,1个地下水检测点,探讨了工业场地及其周边污染物分布特征、扩散方式及对周边的居民的健康风险。结果表明土壤中需要关注的污染物为镍,667%的点位超过筛选值,其扩散方式主要依靠雨水的淋溶作用。废渣经过浸出实验,镍浸出量很低,不为土壤中镍的来源,推断其来源为煤炭的散乱堆放和燃烧。经过风险评估后,得出该场地的健康风险可以接受。

Taking a discarded phosphorus chemical production enterprise in Qiannan as a research object,11 soil testing points,3 waste residue detection points,1 wastewater detection point and 1 groundwater test point were set up to discuss the distribution and characteristics of pollutants in industrial sites and their surrounding areas and their health risks to surrounding residents.The results show that the pollutant that needs attention in the soil is nickel,and nickel in 66.7%of the points exceeds the screening value,and the diffusion mode mainly depends on the leaching of rainwater.The leaching experiments showed that the random stacking and burning of coal,while not the slag is the source of nickel pollution in soil.After the human health risk assessment,it is concluded that the health risks of the site are acceptable.