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Characterization of Roadway Runoff Prior to Treatment
| 题名： | Characterization of Roadway Runoff Prior to Treatment |
| 作者： | Leon T. Thiem, Bid A. Alkhatib, Sampath K.Bade and Arvind Panganamamula |
| 关键词： | Roadway Runoff Runoff Pollutants First Flush |
| 摘要： | Proper design of roadway runoff treatment systems requires the knowledge of the pollutants present, peak concentrations, volumetric mass loading and seasonal variations. Three sampling locations in the State of Rhode Island having different Average Daily Traffic (ADT) values, drainage areas and land uses were selected to characterize roadway runoff. A total of six rain storms, including two winter and four non-winter storms were sampled. The collected water samples were analyzed for suspended solids, metals, nutrients, organic and inorganic chemicals. Both natural (leaf fall) and Anthropogenic (application of deicing agents) seasonal characteristics were found to be factors affecting the concentration and loads of Calcium, Chloride, Nitrate, Sodium and TOC. A first flush period during which the contaminants and mass loadings are present in high concentrations was observed at all of the sites for most of the contaminants. The range of ADT values selected for this study did not affect the magnitude of the pollutant concentrations and loads. T and use and seasonal characteristics appeared to have the most impact on the magnitude of mass loadings from roadway runoff. |
| 报告类型： | 科技报告 |
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