城区屋面雨水径流水文水质特征研究  

Research on characteristics of hydrology and water quality on rainwater runoff of urban roof

作　　者：陈伟伟[1] 张会敏[1] 黄福贵[1] 卞艳丽[1] 

机构地区：[1]黄河水利科学研究院,河南郑州450003

出　　处：《水资源与水工程学报》2011年第3期86-88,共3页Journal of Water Resources and Water Engineering

基　　金：中央级公益性科研院所基本科研业务费专项资金(HKY-JBYW-2010-17);国家自然科学基金项目(50879027)

摘　　要：研究城区屋面径流水文过程与污染物浓度变化特征,为有效利用城市雨水、控制非点源污染提供依据。通过体积法对新乡市城区屋面降雨径流进行采样,水质指标分析包括pH、SS、COD和DO。屋面径流系数为0.92~0.98间。研究结果表明：径流初期污染严重,后期COD、SS浓度分别在25 mg/L和30 mg/L以下。径流曲线形态与降雨过程线类似,两者波动幅度相对较小。径流中COD与SS之间的相关性较好,而DO与其之间的相关性较差。径流水质主要受降雨量、降雨强度、屋面材料、季节和气温等因素影响。The purpose of this study is identifying and characterizing the hydrological process of urban roof runoff,as well as concentrating variation of pollutants.The aim is to provide the base for the effective utilization of rainwater in city and the control of non-point pollution.The urban roof rainfall was collected in Xinxiang City by volume method.The examples were taken to analyze the contents of pH,SS,COD,and DO.The runoff coefficient of roof is 0.92~0.98.At the beginning the runoff water quality is bad,and in later period the concentration of COD and SS are separately below 25 mg/L and 30 mg/L.The runoff curve is similar with the shape of rainfall process,both of them fluctuate lightly.The correlation between COD and SS is good,but that is small between DO and these pollutants.The runoff water quality is mainly affected by rainfall,rainfall intensity,roof material,season,air temperature.

关 键 词：城区屋面雨水 水文水质特征 降雨—径流过程 

分 类 号：TV121.2[水利工程—水文学及水资源]