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城市流域降雨径流水质特性及初期冲刷现象

王书敏 郭树刚 何 强 颜文涛 宋 力

王书敏, 郭树刚, 何 强, 颜文涛, 宋 力. 城市流域降雨径流水质特性及初期冲刷现象[J]. 环境科学研究, 2015, 28(4): 532-539.
引用本文: 王书敏, 郭树刚, 何 强, 颜文涛, 宋 力. 城市流域降雨径流水质特性及初期冲刷现象[J]. 环境科学研究, 2015, 28(4): 532-539.
WANG Shumin, GUO Shugang, HE Qiang, YAN Wentao, SONG Li. Water Quality Characteristics of Stormwater Runoff and the First Flush Effect in Urban Regions[J]. Research of Environmental Sciences, 2015, 28(4): 532-539.
Citation: WANG Shumin, GUO Shugang, HE Qiang, YAN Wentao, SONG Li. Water Quality Characteristics of Stormwater Runoff and the First Flush Effect in Urban Regions[J]. Research of Environmental Sciences, 2015, 28(4): 532-539.

城市流域降雨径流水质特性及初期冲刷现象

基金项目: 国家水体污染控制与治理科技重大专项(2008ZX07315-001);重庆市科学技术委员会项目(cstc2014jcyjA20022);重庆市教育委员会科技项目(KJ1401120)

Water Quality Characteristics of Stormwater Runoff and the First Flush Effect in Urban Regions

  • 摘要: 为了解城市流域降雨径流水质特性及其初期冲刷现象,以重庆市盘溪河流域和虎溪流域为研究对象,对6场降雨径流进行监测. 结果表明:各场次降雨中,城市流域降雨径流污染物浓度均呈抛物线型分布;在所监测的6场降雨中,盘溪河流域ρ(TSS)(TSS为总悬浮物)、ρ(CODCr)、ρ(TN)、ρ(TP)平均值分别为2 000、420、13.0、5.7 mg/L,虎溪流域ρ(TSS)、ρ(CODCr)、ρ(TN)、ρ(NH3-N)、ρ(NO3--N)、ρ(TP)、ρ(Fe)、ρ(Zn)、ρ(Pb)、ρ(Cd)的平均值分别为33、38、2.6、0.7、1.1、0.1、2.1、0.2、0.6、0.06 mg/L. 在盘溪河流域和虎溪流域降雨径流中,磷均以颗粒态为主(分别占56%和87%),氮均以无机氮为主(分别占72%和82%). 盘溪河流域未发现明显的初期冲刷现象,虎溪流域初期40%的径流携带了50%~80%的污染负荷. 降雨径流流量分析表明,单峰降雨事件的峰值流量取决于且滞后于峰值雨强,多峰降雨事则件往往导致多峰流量响应.

     

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  • 刊出日期:  2015-04-25

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