典型有机化工场地土壤与地下水污染评估

Evaluation of soil and groundwater pollution in typical organic chemical plant

以江苏某有机化工污染场地为研究对象,在污染识别的基础上,依据《场地环境调查技术导则》(HJ25.1-2014),确定了29个土壤取样点和4个地下水取样点,分别分析了82个土壤样品和4个地下水样品中的苯酚、苯二酚等特征污染物,结果表明在生产车间及导热油炉房处土壤均受到较严重的污染,苯酚、邻苯二酚、对苯二酚超标倍数分别为1.4~4.2倍、13.3~34.0倍和6.6~44.5倍,且集中在表层到3m的深度;在生产车间和污水处理池处地下水污染最为严重,其中对苯二酚超标达408.8倍。因此,对初步监测的超标污染区域需要进行深入健康风险评估,以指导该场地的土壤修复。

Based on the identification of pollution field,a total of29soil sampling points and four groundwater sampling points were established according to the Technical Guidelines for Site Environmental Survey(HJ25.1-2014).The results showed that soils were polluted by phenol and resorcinol in82soil samples and4groundwater samples respectively.The results showed that the soils were polluted at the production workshop and the oil furnace,,The deduction of hydroquinone exceeded1.4to4.2times,13.3to34.0times and6.6to44.5times,respectively,and concentrated in the surface to the depth of3m;in the production workshop and sewage treatment site of the most serious groundwater pollution,Phenol exceeded the standard of408.8times.Therefore,an over-health risk assessment is required for the over-contaminated area of the initial monitoring to guide the soil's remediation.