焦化厂地块土壤污染状况分析

为了研究太原迎宪焦化集团有限公司场地是否为污染地块,对焦化厂地块土壤污染状况进行了分析及污染识别,研究地块潜在污染物为重金属、氰化物、氟化物、VOCs、SVOCs、农药、TPH,潜在污染介质为表层土壤、深层土壤和地下水,并进行了土壤检测和地下水检测.结果表明,共布设45个土壤采样点位,送检土壤样品共计136件,检出率接...

Analysis on soil pollution in coking plant plot

In order to study whether the site of Taiyuan Yingxian Coking Group Co.，Ltd.is a contaminated plot，this article analyzed the soil pollution status of the coking plant plot，and conducted pollution identification.The potential pollutants of the research plot are heavy metals，cyanide，fluoride，and VOCs，SVOCs，pesticides，TPH.Potential pollution media are surface soil，deep soil and groundwater.Soil testing and groundwater testing were carried out.The results showed that a total of 45 soil sampling points were deployed and a total of 136 soil samples were submitted for testing.The detection rate was close to 100%.The pollutants were mainly heavy metals，polycyclic aromatic hydrocarbons and total petroleum hydrocarbons.The main sources of materials are the company′s coking quenching process and coke stacking.The detection points of halogenated aliphatic hydrocarbons are mainly concentrated in the west plant area，which is related to the use of chlorinated organic compounds in the pesticide plant on the north side of the west plant area.Benzo[a]pyrene has a higher detection value at IDS41 and IDS37，and the depth is near the fill layer，which is related to the higher cinder content in the fill layer.Methyl tertiary butyl ether was detected at all three points of the gas station，and the detection value of petroleum hydrocarbons downstream of the buried tank is relatively high，indicating that the volatilization of oil in the gas station tank has an impact on the regional soil.The pollutants detected in the groundwater samples of 8 groundwater wells are 6 kinds of heavy metals，3 kinds of VOCs，3 kinds of SVOCs and TPH，but all the detected pollutants did not exceed the relevant standard values，such as the "Groundwater Quality Standard" (GB/T 14848—2017).The site risk screening was carried out.The soil and groundwater content of the survey site did not exceed the relevant national or local standards，and the risk to human health was negligible.The research site was not a contaminated plot.