农药厂土壤污染状况调查与污染特征分析

Investigation of Soil Pollution Status and Analysis of Pollution Characteristics in Pesticide Factory

本研究以南方某农药厂为研究对象,通过资料收集、现场踏勘、人员访谈,分析了该厂地块的主要产品、生产工艺、产污环节,对土壤、地下水进行采样调查。共布设了39个土壤采样点位,送检了179个土壤样品,共检测到18种污染物,其中乙苯、氯乙烯、苯、氯苯、1,4-二氯苯、1,2-二氯苯、1,2-二氯乙烷和三氯甲烷等8种污染物超过了对应的筛选值。送检了13个地下水样品,其中甲苯、1,2-二氯乙烷、二氯甲烷、氯苯、三氯甲烷、1,4-二氯苯、1,3-二氯苯、1,2-二氯苯和总石油烃等9种污染物超过了《地下水质量标准》(GB/T 14848-2017)[1]中的Ⅳ类标准或《建设用地土壤污染风险评估技术导则》(HJ 25.3-2019)[2]中的第二类用地地下水污染风险筛选值。

Taking a pesticide factory in the south as the research object,through data collection,on-site survey,and personnel interviews,the main products,production processes,and pollution production links of the land were analyzed,and the soil and groundwater were sampled.A total of 18 kinds of pollutants were detected in the 39 soil sampling points set up in 179 soil samples,of which 8 pollutants,including Ethylbenzene,vinyl chloride,benzene,chlorobenzene,1,4-dichlorobenzene,1,2-dichlorobenzene,1,2-dichloroethane,and trichloromethane,have exceeded the screening value.The value selection was sent to a total of 13 groundwater samples,of which 9 pollutants,including Toluene,1,2-dichloroethane,dichloromethane,chlorobenzene,trichloromethane,1,4-dichlorobenzene,1,3-dichlorobenzene,1,2-dichlorobenzene,and total petroleum hydrocarbons,have exceeded the“Standard for groundwater quality”(GB/[1][2]T14848-2017)or“Technical guidelines for risk assessment of soil contamination of land for construction”(HJ25.3-2019)of the value selection of the second type of groundwater pollution risk derived.