| 降雨特性对路面初期径流污染沉降去除的影响 |
| |
| 引用本文： | 左晓俊,傅大放,李贺.降雨特性对路面初期径流污染沉降去除的影响[J].中国环境科学,2010,30(1):30-36. |
| |
| 作者姓名： | 左晓俊 傅大放 李贺 |
| |
| 作者单位： | 东南大学市政工程系,江苏南京,210096 |
| |
| 基金项目： | 江苏省交通科技重大计划项目 |
| |
| 摘 要： | 采用自由沉降试验对2008年2月~2009年3月南京机场高速公路令桥段30场降雨事件的初期路面径流进行监测,考察了污染物去除效果,分析了降雨特征、季节变化、径流初期SS浓度、温度以及pH值与径流沉降去除效果的相关性.结果表明,经过2h自由沉降后,SS去除效果最明显,平均去除率可达33.26%;COD及Cu、Zn、Cd、Pb 4种重金属平均去除率均在20%左右.由聚类分析可知,降雨量、平均雨强对SS、COD沉降2h去除率影响最大.夏季和冬季SS沉降2h平均去除率分别为42.13%和20.76%,而COD和重金属去除率随季节变化不大.径流初期SS浓度值与SS沉降2h去除率相关性较好,相关系数达到0.6864;温度与SS、Pb沉降去除率分别在0.01和0.05水平上显著相关;溶解态含量较高的Zn受pH值的影响较大.
|
| 关 键 词： | 路面径流 自由沉降 降雨特性 污染物去除率 |
| 收稿时间： | 2009-06-02; |
Effect of rainfall characteristics on pollutant removal by road initial runoff settlement |
| |
| ZUO Xiao-jun,FU Da-fang,LI He.Effect of rainfall characteristics on pollutant removal by road initial runoff settlement[J].China Environmental Science,2010,30(1):30-36. |
| |
| Authors: | ZUO Xiao-jun FU Da-fang LI He |
| |
| Institution: | ZUO Xiao-jun,FU Da-fang,LI He(Department of Municipal Engineering,Southeast University,Nanjing 210096,China). |
| |
| Abstract: | By using the free settlement tests of rainfall runoff sampled from a representative of expressway pavement in Nanjing,removal rates of pollutants were evaluated during runoff settling.The influences of rainfall characteristics,seasonal changes,initial SS concentration,temperature and pH on the removal rates by settling were analyzed.Thirty rainfall events were monitored from February 2008 to March 2009.The results showed that SS removal by settlement was the most obvious after 2 hour free settlement.The ave... |
| |
| Keywords: | road runoff free sedimentation rainfall characteristics removal rate of pollutants |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《中国环境科学》浏览原始摘要信息 |
| 点击此处可从《中国环境科学》下载免费的PDF全文 |
|
