某钼尾矿库周围地下水污染调查及污染源解析  

Investigation of Groundwater Pollution around A Molybdenum Tailing Pond and Analysis of Its Pollution Sources

作　　者：苏彩丽 徐晓航 苏雨轩 赵欣欣 邓楷玮 SU Cai-li;XU Xiao-hang;SU Yu-xuan;ZHAO Xin-xin;DENG Kai-wei(School of Environmental and Municipal Engineering,North China University of Water Resources and Electric Power,Henan Zhengzhou 450046,China)

机构地区：[1]华北水利水电大学环境与市政工程学院,河南郑州450046

出　　处：《广州化工》2024年第1期160-163,共4页GuangZhou Chemical Industry

摘　　要：为了探明钼尾矿长期堆存对地下水的影响,以某运行了10年的钼尾矿库为研究对象,设置10个监测井,调查分析了库区周围地下水污染特征,并采用主成分分析法(PCA)对污染物来源进行了解析。结果表明:尾矿库上游地下水类型为HCO_(3)-Ca型或HCO_(3)-Ca-Mg型水,而其下游及侧上游浅层地下水受尾矿库及区域其他污染源影响,SO_(4)^(2-)含量显著增高,水化学类型变为SO_(4)^(2-)为主型;研究区Mo、TH、TDS、NH_(3)-N、F^(-)、Mn和Al均有超标现象,超标率最大的是Mo,超标率为70%,最大超标倍数为50;其次为Mn,超标率为20%,最大超标倍数为2.6。Mo、Cd、Pb、Al、NO_(3)^(-)、F^(-)污染物主要来源于尾矿库渗漏废水,属于工业污染源;Mn、As主要来源于地质作用,属于自然源;NH_(3)-N则主要来源于农业污染源。In order to find out the influence of long-term storage of molybdenum tailings on groundwater,a molybdenum tailing pond that has been running for 10 years was taken as the research object,10 monitoring Wells were set up around the tailing pond area to investigate and analyse the groundwater pollution characteristics,and principal component analysis(PCA)was used to analyse the sources of pollutants.The results showed that the upstream groundwater type of the tailing pond was HCO_(3)-Ca or HCO_(3)-Ca-Mg water,while the downstream and lateral upstream groundwater was affected by the tailing pond and other pollution sources in the region,the content of SO_(4)^(2-) increased significantly,and the hydrochemical type changed to SO_(4)^(2-) as the dominant type.In the study area,Mo,TH,TDS,NH_(3)-N,F^(-),Mn and Al all exceeded the standard values,and the highest exceeded rate was Mo,which was 70%,and the maximum over standard multiple was 50.The second was Mn,the exceeded rate was 20%,and the maximum over standard multiple was 2.6.Mo,Cd,Pb,Al,NO_(3)^(-),F^(-)pollutants mainly came from leakage wastewater of tailing pond,which belongs to industrial pollution sources,Mn and As were mainly derived from geological processes and belonged to natural sources,and NH_(3)-N mainly came from agricultural pollution sources.

关 键 词：钼尾矿库 地下水 污染特征 主成分分析 污染源解析 

分 类 号：X523[环境科学与工程—环境工程]