污水灌溉对浅层地下水水化学特征的影响研究  

Effects of the Sewage Irrigation on Hydrochemical Characteristics of Shallow Groundwater

作　　者：杜斌 DU Bin(Geological Exploration and Research Institute,CNACG,Beijing 100039;Key Laboratory of Transparent Mine Geology and Digital Twin Technology,National Mine Safety Administration,Beijing 100039)

机构地区：[1]中国煤炭地质总局勘查研究总院,北京100039 [2]矿山透明地质与数字孪生技术国家矿山安监局重点实验室,北京100039

出　　处：《中国煤炭地质》2024年第12期70-76,共7页Coal Geology of China

基　　金：中国煤炭地质总局科技创新项目“非煤矿山(铅锌矿、硫铁矿)尾矿库灾害治理技术研究”(ZMKJ-2023-JBGS02-03)。

摘　　要：污水灌溉是一种非常重要的农业节水措施。然而,污水灌溉可能引起地下水化学组分的变化,导致地下水污染,并可能危害生态环境和人类身体健康。选取栾城县作为研究区,通过野外调查和室内分析,对比研究了污灌区和清灌区的地下水水化学特征,探讨了地下水中化学组分的可能来源及其影响因素,从而揭示了污灌对浅层地下水水化学特征的影响。结果表明:污水灌溉引起地下水中Na^(+)、Ca^(2+)、NO_(3)^(-)、Cl^(-)、SO_(4)^(2-)等组分含量,以及电导率、硬度等指标显著升高。长期污水灌溉使地下水中重金属Cr、Cd、Pb含量增加。主成分分析结果显示,各物源对地下水化学组分的贡献率由大至小排序依次为污水灌溉、农业化肥的施用和工厂工业排放。Sewage irrigation is a very important agricultural water-saving method.However,sewage irrigation may change the chemical composition of groundwater,cause groundwater pollution,and may endanger the ecological environment and human health.Based on the field investigation and laboratory analysis,this paper studies the groundwater chemical characteristics in the sewage irrigation area and the clear irrigation area in Luancheng,and discusses the possible sources of salt ions in the groundwater and their influencing factors,the effect of sewage irrigation on the chemical characteristics of shallow groundwater was revealed.The results showed that the contents of Na^(+),Ca^(2+),NO_(3)^(-),SO_(4)^(2-),conductivity,hardness in groundwater increased significantly.The content of Cr,Cd and Pb in groundwater was increased by long-term sewage irrigation.The results of principal component analysis showed that the contribution rate of each source to the chemical components of groundwater was in order from large to small:sewage irrigation,agricultural fertilizer application and industrial discharge.

关 键 词：水质污染 地下水 污水灌溉 SPSS统计分析 水化学特征 

分 类 号：X523[环境科学与工程—环境工程]