不同降雨条件下非渗透地表径流TOC、TP输出规律和成因分析研究  

Study on the output rules and causes of TOC,TP in impervious surface runoff with different rainfall conditions

作　　者：赵树旗[1,2] 卢兴超 周玉文 张萍[3] 刘原 吴献平[1,2] 娄富豪[1,2] ZHAO Shuqi;LU Xingchao;ZHOU Yuwen;ZHANG Ping;LIU Yuan;WU Xianping;LOU Fuhao(College of Architecture and Civil Engineering,Beijing University of Technology, Beijing 100124;Key Laboratory of Beijing for Water Quality and Water Environment Recovery Engineering, Beijing 100124;School of Resources and Environmental Engineering,Hefei University of Technology, Hefei Anhui 230009)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京市水质科学与水环境恢复工程重点实验室,北京100124 [3]合肥工业大学资源与环境工程学院,安徽合肥230009

出　　处：《环境污染与防治》2018年第5期566-571,共6页Environmental Pollution & Control

基　　金：国家水体污染与控制治理科技重大专项(No.2013ZX07304-001-2;No.2013ZX07304-001-3);国家自然科学基金资助项目(No.51478016)

摘　　要：研究城市非渗透地表径流TOC和TP的污染特性具有重要意义。以北京工业大学西校区和西大望路为研究对象,选取2015年的4场典型降雨场次(6月26日、7月18日、7月27日和8月31日),对该区域的非渗透地表径流中TOC和TP的输出规律及成因进行研究。结果表明:径流中TOC在各非渗透地表之间的变化差异性比TP大;非渗透屋面、道路和广场的地表径流污染初期冲刷效应显著,其中西大望路TP、TOC的初期径流浓度总体最高;地表径流污染物浓度受到下垫面空隙率、清扫频率和降雨间隔时间的影响,降雨间隔时间越长时TOC和TP的累积量越大,形成的径流浓度就越高,当下垫面空隙率越大时,TOC和TP越易蓄积,形成的径流浓度也越高。It was of great significance to study the pollution characteristics of impervious surface runoff pollutants such as TOC and TP in urban area.Taking Beijing University of Technology west campus and West Dawang Road as the research object,four typical rainfall events in 2015 were selected（occurred on June 26,July 18,July 27,and August 31）to study the output rules and causes of TOC and TP in impervious surface runoff in this area.The results showed that the variation of TOC concentration in runoff was greater than that of TP in each impervious surface.Impervious roofs,roads and squares had significant scouring effects at the initial runoff,and the concentration of TOC and TP in West Dawang Road was highest.The concentration of surface runoff pollutants was influenced by the porosity of the underlying surface,the frequency of sweeps,and the rainfall interval.If the rainfall interval was longer,the accumulation of TOC and TP would be greater,which could cause the increase of concentration in formed runoff.At the meantime,the larger porosity of the underlying surface could result in the accumulation of TOC and TP much easier,which made the concentration of formed runoff also become higher.

关 键 词：北京 非渗透地表径流 降雨间隔时间 污染物累积 初期冲刷 

分 类 号：X52[环境科学与工程—环境工程]