摘要
以某高校生活广场停车场为研究对象,监测夏天雨季期间四场降雨事件,分析降雨径流污染物(TSS、TN、TP、NH3-N、CODMn)浓度随时间的变化规律、降雨径流初始冲刷效应以及污染物之间的相关性。结果表明:降雨径流中主要污染物为TN、CODMn。在降雨径流产生的20 min内,各污染物的浓度较高,大部分超过《地表水环境质量标准》V类水质标准,之后各污染物浓度总体呈现下降趋势。污染物浓度随降雨历时的变化与污染物种类、降雨类型、污染物富集程度等因素有关。高雨强"前锋型"的降雨事件对污染物的初始冲刷最为严重。TSS与其他污染物均存在不同程度的相关性,TSS与TP、NH3-N和CODMn之间均呈显著相关。为保护当地水环境,建议该生活广场停车场的初期弃雨量应为6mm。
This paper chose a campus parking lot in Wuhan as the research object.Four different types of rain falls in summer were monitored.The change of runoff pollutants along with time,the first flush effect and the correlation ships between TSS and other pollutants were studied.The results showed that within20 minutes of rainfall runoff,concentrations of pollutants are high,and most of them exceed the surface water quality standards of Surface Water Environmental Quality Standards.After that,concentrations showed a decreasing trend.The concentration of pollutants varies with the duration of rainfall and factors such as the type of pollutants,the type of rainfall,and the degree of enrichment of pollutants.The high rain and strong "forward-type" rainfall events have the most serious initial erosion of pollutants.There are different degrees of correlation between TSS and other pollutants.There is a significant correlation between TSS and the pollutants.TSS is highly correlated with TP,while moderately or highly correlated with NH3-N and CODMn.In order to protect the local water environment,it is recommended that the initial amount of rain in the Plaza parking lot should be 6 mm.
作者
潘璐
刘德富
刘瑞芬
PAN Lu 1 ,LIU Defu 1,2 ,LIU Ruifen 1(1 School of Civil Engin., Architecture and Environment,Hubei Univ. of Tech.,Key laboratory of Ecological Restoration of Lakes and Algae Use ofHubei Province , Wuhan 430068, China;2 Water Conservancy and Environment Institute of China Three Gorges Univ.,Ecological Environment Engin. Research Center of Ministry of Education, Yichang 443002,Chin)
出处
《湖北工业大学学报》
2018年第4期94-99,共6页
Journal of Hubei University of Technology
基金
三峡库区生态环境教育部工程研究中心开放基金课题(KF2016-09)
湖北工业大学博士科研启动基金项目(BSQD2016029)
关键词
广场停车场
降雨径流
水质
初期冲刷
初期弃雨量
public square parking lot
runoff
water quality
first flush effect;initial rainwater discarding