Characterization of solid and metal element distributions in urban highway stormwater

被引：138

作者：

Sansalone, JJ ^{[1
]}

Buchberger, SG ^{[1
]}

机构：

[1] Univ Cincinnati, Dept Civil & Environm Engn, Cincinnati, OH 45221 USA

来源：

WATER SCIENCE AND TECHNOLOGY | 1997年 / 36卷 / 8-9期

关键词：

highway runoff; metal elements; particle size distributions (PSDs); specific surface area (SSA); partitioning;

D O I：

10.2166/wst.1997.0659

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Urban drainage from paved surfaces transports a wide gradation of solids ranging from sub-micron particles to gravel size aggregates. This study measured physical characteristics of solids transported in lateral pavement sheet flow from a heavily traveled urban roadway in Cincinnati. The physical characteristic measured was particle size which was used as a surrogate of specific surface area. Solids were sorted according to particle size distributions (PSD). Solids ranged from smaller than 1 mu m to greater than 10,000 mu m. Particles larger than 25 mu m were separated mechanically to generate PSDs. Flow rate and duration controlled the yield and size of transported solids. Metal element analysis of PSD from snow and rainfall events indicate that Zn, Cu and Pb mass increase with decreasing particle size. Cd did not exhibit a similar trend. Results provide guidance for assessment of urban runoff water quality impacts and design of in-situ treatment strategies. (C) 1997 IAWQ. Published by Elsevier Science Ltd.

引用

页码：155 / 160

页数：6