摘要
利用2009年所采集的75件浅层地下水样品的水质资料,分析了浅层地下水的水化学空间分布特征,并结合研究区的地质水文地质条件以及污染源的特点进一步探究其形成的原因。研究结果表明:河南平原浅层地下水主要存在着TDS、总硬度、Mn、"三氮"、Fe、氯化物以及硫酸盐的超标现象。TDS,氯化物、硫酸盐超标主要由于局部地区过量开采地下水破坏了天然状态的水盐均衡以及引用污水灌溉、工业废水的不合理排放。"三氮"超标主要由于一些农药和化肥的不合理使用。Fe、Mn超标主要由于第四纪沉积物中含有大量的铁锰结核以及生产、生活污水的不合理排放。地下水硬度超标的原因主要有过量开采地下水、工业生活污水的排放以及垃圾的任意堆放。
The spatial distribution characteristics of shallow groundwater were analyzed according to the 75 samples and the pollution reasons were further explored combining with the geological and hydrogeological conditions and the characteristics of pollution sources.The results showed that the groundwater is mainly polluted by TDS,total hardness,Mn,＂three nitrogen＂,Fe,chloride and sulfate.TDS,chloride and sulfate over standards are mainly due to excessive exploitation of groundwater in some areas which destroyed the natural balance between water and salt and the industrial wastewater discharged unreasonably.＂ Three nitrogen ＂ exceeding is mainly due to the irrational use of a number of pesticides and fertilizers.Fe and Mn exceeding the standard is mainly due to the sediments containing large amounts of iron and the sewage unreasonable discharged.Hardness over standard is main caused by the excessive extraction of groundwater,the discharge of industrial sewage and garbage piling up at random.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2011年第5期148-153,共6页
Journal of Arid Land Resources and Environment
基金
河南省国土资源厅地质矿产科技攻关项目(国土科研[2006]第16号)资助
关键词
水化学
空间分布特征
浅层地下水
污染成因
河南平原
hydrochemistry
distribution characteristics
shallow groundwater
pollution causes
Henan Plain
