摘要
为了后期垃圾填埋场周边地下水的监测和运行管理提供依据,运用水质类别评价法、主成分分析法、Pearson相关性分析和聚类分析,对2011—2024年某一典型生活垃圾填埋场周边7口监测井地下水质进行分析评价。结果表明:14年来监测井地下水水质类别均为Ⅳ或Ⅴ,共有11项主要污染物;各监测井地下水水质波动变化,水质整体恶化;TCC、NH_(3)-N、As有一定时空异质,尤其是TCC二三季度均值明显高于其他季节;推测在垃圾填埋场东侧和北侧存在渗滤液泄露的可能,推测7号井除了垃圾填埋场还有其他污染源存在。运用ARIMA预测模型预测未来5年水质情况,2号、5号井未来5年有水质恶化趋势,尤其5号井恶化趋势明显,其他5口井未来5年水质变化趋于平稳。
In order to provide a basis for the monitoring and operation management of groundwater around a typical municipal solid waste landfill site in the later stage,the water quality category evaluation method,principal component analysis method,Pearson correlation analysis,and cluster analysis were used to analyze and evaluate the groundwater quality of seven monitoring wells around a typical municipal solid waste landfill site from 2011 to 2024.The results showed that the groundwater quality category of the monitoring wells in the past 14 years wasⅣorⅤ,with a total of 11 major pollutants.The groundwater quality of each monitoring well fluctuated and deteriorated overall;TCC,NH_(3)-N,and As exhibit certain spatiotemporal heterogeneity,particularly with TCC having significantly higher mean values in the second and third quarters compared to other seasons;It is speculated that there may be leachate leakage on the east and north sides of the landfill site,and it is speculated that there are other sources of pollution in Well 7 besides the landfill site.Using ARIMA prediction model to predict the water quality situation in the next 5 years,there is a trend of water quality deterioration in wells 2 and 5,especially in well 5,where the deterioration trend is obvious.The water quality changes in the other 5 wells tend to be stable in the next 5 years.
作者
刘彦杰
刘茜
胡晓璇
LIU Yan-jie;LIU Qian;HU Xiao-xuan(Beijing Chaoyang Municipal Ecological and Environmental Monitoring Center,Beijing 100020,China)
出处
《环境生态学》
2025年第3期34-42,共9页
Environmental Ecology
