姜堰地区浅层地下水污染特征与成因

Pollution Characteristics and Formation Cause of Shallow Groundwater in Jiangyan Area

针对江苏省泰州市姜堰地区存在的浅层地下水污染问题,为实现该区浅层地下水的合理开发、有效保护以及可持续利用,在系统采集2018年研究区主要地下水监测井水样的基础上,采用舒卡列夫分类法、修正内梅罗指数法等方法对该区地下水的水化学特征及污染特征进行分析评价。结果表明:相比于2010年,浅层地下水阴阳离子浓度明显增加,区域地下水污染加剧;2018年姜堰地区浅层地下水水质处于中度污染,Ⅲ类及以下水质的水样占总样本数的77.78%,且局部地区污染严重;浅层地下水水质丰水期较枯水期整体偏差,研究区浅层地下水污染物质的主要来源是面源污染,研究区中南部人类活动频繁带水质相对较差。

Aiming at the problem of shallow groundwater pollution in Jiangyan area of Taizhou City,Jiangsu Province,in order to realize the reasonable development,effective protection and sustainable utilization of shallow groundwater in this area,based on the systematic collection of main groundwater monitoring well water samples in 2018,the hydrochemical characteristics and pollution characteristics of ground water are analysed and evaluated by using Shukarlev classification method and modified Nemerow index method.The results show that,compared with 2010,the concentration of anion and cation in shallow ground water increases significantly,and the regional groundwater pollution intensifies.In 2018,the shallow groundwater quality in Jiangyan area is moderately pollution,the water samples of classⅢand below accounting for 77.78%of the total number of samples,and some areas are serious pollution.The quality of shallow groundwater in high water season is lower than that in dry season totally.The main source of pollutants in shallow groundwater in the study area is non-point source pollution.The water quality in the frequent human activities zone in the central and southern part of the study area is relatively poor.