摘要
地下水环境背景值是进行地下水水质评估、污染判定及治理效果评价的基础和重要依据。为构建菏泽市区域深层地下水监测评估体系及预警体系,提高地下水管理质量和效益,以2013~2019年菏泽市地下水饮用水源地专项调查及监测数据为基础,运用数理统计方法计算获取了深层地下水(>350m)15项指标的环境背景值及统计特征值。结果表明:13项指标属于《地下水质量标准》(GB/T14848-2017)Ⅰ~Ⅲ类,达到优良水平;而F^(-)和Na^(+)两项指标浓度分别为2.47mg/L、208mg/L,分别属于Ⅴ类、Ⅳ类标准,质量较差,是原生劣质指标。相关分析表明TDS与SO_(4)^(2-)、Cl^(-)、总硬度等显著正相关;F^(-)、Na^(+)除两者本身显著正相关外,它们分别与pH值显著正相关,与总硬度显著负相关。利用F值评价法对地下水环境背景值代表的水质状况进行综合评定,结果为较差、极差水平。
Background value of groundwater environment is an important basis of evaluating the quality,pollution degree and control effectiveness of groundwater.To construct early warning and assessing system for deep groundwater in Heze district and improve its management quality and efficiency,a study on background values of deep groundwater environment(>350m)in Heze district was carried out by using mathematical statistic method on the basis of data from special investigation on drinking water source and routine monitoring conducted from 2013 to 2019.The results showed that the background values of 13 pollutants in the total 15 pollutants met the demand of classⅠtoⅢof Groundwater Quality Standard(GB/T 14848-2017)and reached an excellent level,but F-and Na+with the concentrations reaching 2.47mg/L and 208 mg/L,respectively were only in classⅤand classⅣ,indicating the poor quality.Correlation analysis showed that TDS had significantly positive correlations with SO_(4)^(2-),Cl^(-)and total hardness.F-and Na^(+)had not only a significant positive correlation between each other,but also a significant positive correlation with pH value and a significant negative correlation with total hardness.Based on background values,the groundwater quality in the research area was evaluated as poor or extremely poor level by using F value evaluation method.
作者
徐雄
孙艳亭
肖培平
李敏
XU Xiong;SUN Yanting;XIAO Peiping;LI Min(Heze Ecological Environment Monitoring Centre of Shandong Province,Heze Shandong,274000,China;College of Agricultural and Biological Engineering,Heze University,Heze Shandong,274000,China)
出处
《江西水利科技》
2023年第2期150-156,共7页
Jiangxi Hydraulic Science & Technology
基金
菏泽学院科研项目(XY17KJ07).
关键词
菏泽
地下水
背景值
数理统计法
Heze
Groundwater
Background value
Mathematical statistic method
