洪涝灾害对鄱阳湖流域地下水水质的影响——以乐安河乐平段为例  

Effects of Flood on Groundwater Quality in Poyang Lake Basin——A case of the Leping Reach of Le’an River

作　　者：魏信祥 杨周白露 张望 WEI Xinxiang;YANG Zhoubailu;ZHANG Wang(School of Water Resource and Environmental Engineering,East China University of Technology,330013,Nanchang,PRC;Jiangxi Water Resource Institute,330013,Nanchang,PRC;Jiangxi Aviation Vocational and Technical College,330024,Nanchang,PRC)

机构地区：[1]东华理工大学水资源与环境工程学院,南昌330013 [2]江西水利职业学院,南昌330013 [3]江西航空职业技术学院,南昌330024

出　　处：《江西科学》2023年第4期773-780,共8页Jiangxi Science

基　　金：江西省水利科技项目(202223YBKT46);江西省教育厅科技项目(GJJ2209106);江西省研究生创新基金项目(YC2022-B180)。

摘　　要：为了对鄱阳湖流域乐安河乐平沿岸2022年夏季洪水后浅层地下水的水质污染状况进行评价。采集了12个受洪涝灾害影响地区民井的地下水样品,监测了pH、微量金属、SO42-、NO-3等16项水质指标,并利用内梅罗综合污染指数法和水质指数(WQI)法开展了水质评价。结果表明,洪涝期间NH_(3)-N在所有采样井超标,Mn、pH、NO-3超标率分别为41.7%、25.0%、8.3%。不同水质评价方法的评价结果存在明显差异,其中水质指数法评价结果较为客观、合理,地下水水质以III类(50%)和IV类(33%)为主,总体为差—极差,洪水会造成地下水水质恶化。高浓度的NH_(3)-N、Mn和NO-3很大程度上受人类活动(工业生产、生活污水排放、农业施肥等)的影响。In order to evaluate the water quality pollution of shallow groundwater in Leping reach of Le’an River in Poyang Lake Basin after summer flood in 2022,twelve groundwater samples were collected from the flood-affected wells,and 16 water quality parameters such as pH,trace metal,SO2-4,NO-3,etc.were monitored.The water quality of the samples was evaluated by Nemerow comprehensive pollution index method and Water quality index(WQI)method.The results showed that during the flood,the concentration of NH_(3)-N exceeded the standard in all wells.In addition,41.7%,25.0%and 8.3%of samples exceeded the standard of Mn,pH and NO-3,respectively.The evaluation results of different methods were significantly different.Compared with the single factor method and Nemerow comprehensive pollution index method,the water quality index method was more objective and reasonable.The groundwater quality during the flood were mainly classified as Class III(50%)and Class IV(33%),and the overall groundwater quality was poor to extremely poor.The flood caused the deterioration of groundwater quality.The high concentration of NH_(3)-N,Mn and NO-3 in groundwater was largely affected by human activities,such as industrial production,domestic sewage discharge,agricultural fertilization,etc.

关 键 词：洪涝 地下水 水质评价 水质指数 鄱阳湖流域 乐平 

分 类 号：X523[环境科学与工程—环境工程]