华北某石化企业搬迁遗留场地污染状况初步调查

Environmental Preliminary Investigation for the Remaining Site of a Petrochemical Enterprise

以华北某石化企业搬迁遗留场地为研究对象,根据HJ 25.1—2019、HJ 25.2—2019环境保护标准进行土壤污染状况初步调查,通过资料收集、现场踏勘以及人员访谈进行污染识别,采用系统布点和判断性布点结合的方法采集土壤和地下水样品,检测项目为GB 36600—2018标准中的基本项目、GB/T 14848—2017标准中的常规指标以及识别出的地块特征污染因子。本次调查共布设42个土壤点位、8个地下水点位、516组采集土壤样品和9组地下水样品。调查结果表明,该场地生产区域土壤中砷、钒和钡等重金属以及石油烃存在超标现象,地下水中氨氮、镉、铅、石油类和石油烃等因子普遍超标,作为第一类用地存在健康风险,需要开展进一步详细调查和风险评估工作,以确定土壤污染程度和范围,评估污染物对人体健康的危害风险水平。

Taking the relocation site of a petrochemical enterprise in North China as the research object,a preliminary investigation on soil pollution was carried out according to HJ 25.1—2019 and HJ 25.2—2019.Pollution identification was carried out through data collection,site survey and personnel interview,and soil and groundwater samples were collected by combining systematic and judgmental distribution methods.The test items were basic items in GB 36600—2018,routine indicators in GB/T 14848—2017,and plot characteristic pollution factors.A total of 42 soil sites and 8 groundwater points were arranged and 516 groups of soil samples and 9 groups of groundwater samples were collected and analyzed.The investigation results showed that the heavy metals As,V,Ba and petroleum hydrocarbons in the soil of the site exceeded the standard limits,and the factors in groundwater such as NH3-N,Cd,Pb,petroleum and petroleum hydrocarbons exceeded the corresponding standard limits.There are health risks in the first type of land use mode,and further detailed investigation and risk assessment are needed to determine the extent and scope of soil pollution and assess the risk level of pollutants to human health.