北京地区场次降雨对水质状况影响研究

Research on the Influence of Rainfall on Water Quality in Beijing Area

为了研究北京地区场次降雨对地表水环境的影响,选取2017~2019年北京市80个考核断面降雨前后水质监测数据,使用单因子评价法、内梅罗污染指数法、改进的内梅罗综合污染指数法进行评价分析。结果表明:北京市80个考核断面水质超标情况呈明显下降趋势,场次降雨对于湖库类型水体的影响小于河道类型水体,改进的内梅罗污染指数评价法对考核断面水质评价的结果好于其他两种评价方法。为研究北京地区地表水污染防控提供数据支撑。

In order to study the impact of rainfall on the surface water environment in Beijing,select the water quality monitoring data before and after rainfall in 80 assessment sections in Beijing from 2017 to 2019,single factor evaluation method,Nemerow pollution index method and improved Nemerow comprehensive pollution index method are used for evaluation and analysis.The result shows:the excess water quality of 80 assessment sections in Beijing showed a significant downward trend,the impact of rainfall on lake-reservoir type water bodies is less than that on river-channel type water bodies,the improved Nemerow pollution index evaluation method is better than the other two evaluation methods in evaluating the water quality of the examination section.Provide data support for the study of surface water pollution prevention and control in Beijing area.