SUSPENDED SEDIMENT AND METALS REMOVAL FROM URBAN RUNOFF BY A SMALL LAKE

被引：0

作者：

STRIEGL, RG

机构：

[1] U.S. Geological Survey, Water Resources Division, Denver Federal Center, Lakewood, CO 90225, United States

来源：

WATER RESOURCES BULLETIN | 1987年 / 23卷 / 06期

关键词：

HEAVY METAL COMPOUNDS - Removal - LAKES - Sedimentation - WATER POLLUTION - Water Quality;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A small lake in the Chicago Metropolitan Area was from 91 to 95 percent efficient in removing suspended sediment and from 76 to 94 percent efficient in removing copper, iron, lead, and zinc from urban runoff. Sediments accumulated in the lake in the form of an organic-rich mud at an average rate of 20 millimeters per year; this reduced lake storage and covered potential habitat for aquatic organisms. Copper, lead, and zinc concentrations were closely associated with suspended-sediment concentrations and with silt- and clay-sized fractions of lake sediment. Although concentrations of mercury and cadmium were near detection limits in runoff, measurable concentrations of these metals accumulated in the lake sediments.

引用

页码：985 / 996

页数：12