某污染场地周边地下水环境质量评价

Groundwater Environmental Quality Assessment for the Area Around a Contaminated Site

在分析了某污染场地周边地区水文地质条件的基础上,对区内17个监测点进行了地下水取样测试,并选取17项环境质量评价因子,以《地下水质量标准》(GB/T14848-93)为评价标准,采用单因子评价法、综合指数评价法与模糊综合评价法对某污染场地下水水质予以评价。结果表明,研究区地下水中的N-NH3、SO24-、总硬度、pH、Cr、Mn和As等多项指标超标,地下水水质受到了较严重的污染,其南、北两区域的油库、垃圾场以及城市污水排放是可能的地下水污染源。

Based on the an from 17 monitoring spots in alysis of hydrogeological condition around a contaminated site, groundwater samples the study area were tested. Quality of groundwater environmental was assessed by choosing 17 assessment factors of environmental quality, appling Single Factor Evaluation, Comprehensive Index Evaluation and Fuzzy Comprehensive Evaluation, and taking the Quality Standard for Groundwater（ GB/T14848 - 93） as the standard. Results indicated that N - NH3, SO4^2- , total hardness, pH, Cr, Mn and As had excee- ded the criterion, and groundwater quality in the study area was seriously contaminated. Such a groundwater deterioration was probably due to the landfills, petrol station and urban sewage drainage in the northern and southern regions of the study area.