The pollution assessment and source analysis of groundwater in a region of southwest China
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摘要：
分析了广西某乡镇潜水层地下水的27种基本水质因子和石油类物质,结合地下水Ⅲ类标准和当地地下水背景值,利用污染指数法评价当地地下水的污染状况,筛选出特征污染因子,同时,将相关性分析/聚类分析与地统计学相结合,对特征污染因子的空间分布及来源进行了详细分析.研究结果表明:除大肠杆菌外,该区域地下水的所有水质因子平均值均低于Ⅲ类标准,硫酸盐和氟化物的均值分别为背景值的85.87%和83.33%,但是最大值分别为背景值的1.30倍和1.85倍,而大肠杆菌均值分别为Ⅲ类标准和背景值的1.77倍和4.42倍,因此,将硫酸盐、氟化物和总大肠菌群作为该区域的重点防控水质因子;区域内硫酸盐和氟化物的含量呈现显著性相关且聚为一类,大肠杆菌与其他水质因子相关性极弱且单独聚为一类;水质因子分布空间各异,硫酸盐与氟化物的高值区主要集中于该区域的东南部,污染源为自然因素与工业园污水排放相叠加,总大肠菌群的高值区主要集中于西部,污染源为乡村农业及养殖污染.通过区域地下水污染状况的解析,为地下水污染防治提供理论指导.
Twenty-seven quality factors and petroleum substances of groundwater in a submarine layer in a town of Guangxi were analyzed.Based on the groundwater Class III standard and the local groundwater background value,the pollution situation of the groundwater was evaluated with the method of pollution index.Meanwhile,the characteristic pollution factors were selected and the spatial distribution and source were analyzed by correlation analysis,cluster analysis and geostatistics.Results showed that except for the factor of E.coli,the other water quality factors in the study area did not exceed the standard of Class III,the average values of sulfate and fluoride were respectively 85.87%and 83.33%of the background values,while the maximum values were 1.30 and 1.85 times of the background value,respectively.It is worth noting that the average value of E.coli was 1.77 times of the Class III standard and and 4.42 times of the background value.Therefore,in this study,sulfate,fluoride and E.coli were taken as the key water quality control factors in this area;the contents of sulfate and fluoride were significantly correlated and can be clustered into one group,while the correlation between E.coli and other water quality factors was very weak and clustered into one group;the distribution space of water quality factors was different.The high value areas of sulfate and fluoride were mainly located in the southeast of the area,the pollution sources were the superposition of natural factors and the sewage discharge of Industrial Park.The high value area of E.coli was mainly located in the west,and the rural agriculture and breeding was the main pollution source.The study of regional groundwater pollution status provides theoretical guidance for groundwater pollution prevention and control.
作者：
张凯 郑新辉 李晓楠 李静华 吉雨宁 高昊
Zhang Kai;Zheng Xinhui;Li Xiaonan;Li Jinghua;Ji Yuning;Gao Hao(School of Chemical&Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;College of Environment,Henan Normal University,Xinxiang 453007,China)
机构地区：
中国矿业大学（北京）化学与环境工程学院 betway官方app 环境学院
出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2020年第5期64-73,共10页
基金：
越崎青年学者(2019QN08) 中国国家重点研发计划基金(2018YFC0406404) 国家能源集团2030先导项目(GJNY2030XDXM-19-03.2) 贵州省科学技术厅-毕节市科学技术局-贵州工程应用技术学院科学技术联合基金项目(黔科合LH字[2015]7584号).
关键词：
地下水 污染评价 污染源解析
groundwater pollution assessment analysis of pollution sources
分类号：
X523 [环境科学与工程—环境工程]
