天津中心城区典型下垫面降雨径流污染冲刷特征分析  

ANALYSIS ON CHARACTERISTICS OF RAINFALL RUNOFF POLLUTANTS FLUSH OF TYPICAL UNDERLYING SURFACES IN TIANJIN CENTRAL CITY

作　　者：赵晓佳 王少坡 于贺[1] 邱春生 孙力平 王晨晨[1,2] 赵乐军 宋现财[3] ZHAO Xiao-jia;WANG Shao-po;YU He;QIU Chun-sheng;SUN Li-ping;WANG Chen-chen;ZHAO Le-jun;SONG Xian-cai(School of Environmental and Municipal Engineering,Tianjin Chengjian University,Tianjin 300384,China;Tianjin Key Laboratory of Aquatic Science and Technology,Tianjin 300384,China;Tianjin Municipal Engineering Design and Research Institute,Tianjin 300384,China)

机构地区：[1]天津城建大学环境与市政工程学院,天津300384 [2]天津市水质科学与技术重点实验室,天津300384 [3]天津市市政工程设计研究院,天津300384

出　　处：《环境工程》2019年第7期34-38,87,共6页Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07106001)

摘　　要：为研究城市降雨冲刷过程中污染物变化特征,选取天津市中心城区3类典型下垫面,针对2018年6—8月期间 5场降雨事件,分析降雨初期冲刷效应和径流污染特征。结果表明:SS和COD是降雨径流中的主要污染物,降雨径流污染程度从大到小依次为小区路面>平屋面>斜屋面。SS与COD、浊度以及TP存在一定相关性,是降雨径流中污染物的主要载体。典型场次降雨事件中斜屋面前30%的径流量输送SS、COD污染物总量的比例分别为73.33%、57.78%,平屋面为61.11%、56.67%。各下垫面径流污染均存在一定程度的初期冲刷效应,其中屋面径流冲刷与Sartor-Boyd模型拟合相关性较好。In order to investigate the characteristics of pollutants during urban rainfall runoff flush process,three typical underlying surfaces in urban area of Tianjin were selected.Based on the five rainfall events from June to August in 2018,the characteristics of rainfall runoff pollutants and first flush effect were analyzed.The results showed that COD and SS were the main pollutants in rainfall runoff.The pollution levels of rainfall runoff in a descending order was the residential pavement,flat roof and inclined roof.SS was the main carrier of pollutants in rainfall runoff,and had a certain correlation with COD,turbidity and TP.During the typical rainfall event process,the percentage of total SS and COD pollutants in the first 30% runoff (by amount) of the inclined roof was 73.33% and 57.78%,respectively;while that of the flat roof was 61.11% and 56.67%,respectively.There was a certain extent of first flush effect on the runoff pollution of each underlying surface,and the roof flush runoff could be well simulated by Sartor-Boyd model.

关 键 词：降雨径流 下垫面 初期冲刷效应 冲刷系数 

分 类 号：TU992[建筑科学—市政工程] X52[环境科学与工程—环境工程]