| 高速公路雨水径流重金属出流特性 |
| |
| 引用本文： | 李贺,石峻青,沈刚,季晓亮,傅大放.高速公路雨水径流重金属出流特性[J].东南大学学报(自然科学版),2009,39(2). |
| |
| 作者姓名： | 李贺 石峻青 沈刚 季晓亮 傅大放 |
| |
| 作者单位： | 1. 东南大学市政工程系,南京,210096
2. 江苏省长江公路大桥建设指挥部,南京,210004 |
| |
| 基金项目： | 江苏省交通科技重大计划 |
| |
| 摘 要： | 对南京机场高速公路路面径流中Cd,Pb,Cu和Zn四种重金属进行了24次现场取样检测的基础上,重点探讨了重金属污染的出流特性与事件平均浓度(EMC).结果表明不同类型降雨事件重金属污染出流特性不同:降雨历时短、降雨量小、降雨强度小的降雨事件重金属浓度在一定范围内波动,在整个径流过程中始终维持在较高水平;降雨历时长、降雨量大、前期强度大的单峰、多峰降雨事件初期污染物浓度高、污染重,初期效应显著;降雨历时短、降雨量较大具有双峰雨型的降雨事件中重金属出流存在"二次冲刷"现象.Cd,Pb,Cu和Zn的EMC变化范围较大,分别为0.09～2.18,6.4～120.6 μg/L和0.024～0.197,0.1～1.03 mg/L.Pb总体污染程度较严重.与国外同类研究相比,本研究Pb和Cd污染程度较低,Cu和Zn则较为接近.
|
| 关 键 词： | 路面径流 重金属 出流特性 事件平均浓度 |
Characteristics of rainfall runoff discharge rule caused by heavy metals on express highway |
| |
| Li He,Shi Junqing,Shen Gang,Ji Xiaoliang,Fu Dafang.Characteristics of rainfall runoff discharge rule caused by heavy metals on express highway[J].Journal of Southeast University(Natural Science Edition),2009,39(2). |
| |
| Authors: | Li He Shi Junqing Shen Gang Ji Xiaoliang Fu Dafang |
| |
| Institution: | 1Department of Municipal Engineering;Southeast University;Nanjing 210096;China;2Jiangsu Yangtze River Highway Bridge Construction Headquarters;Nanjing 210004;China |
| |
| Abstract: | Heavy metal concentrations of Cd,Pb,Cu and Zn were monitored during 24 rainfall runoff events occurred on a representative express highway in Nanjing.Discharge rule of metal pollution and event mean concentrations(EMC) were evaluated.The results show that the discharge characteristics are different in different type of rainfall events.The metal concentrations fluctuate in a certain range of comparatively high levels during the events with short duration,light rainfall and low intensity.In the events with lo... |
| |
| Keywords: | road runoff heavy metals discharge characteristics event mean concentrations |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
