Potential toxicity concerns from chemical coagulation treatment of stormwater in the Tahoe basin, California, USA

被引：15

作者：

Lopus, S. E. ^{[1
]}

Bachand, P. A. M. ^{[1
]}

Heyvaert, A. C. ^{[2
]}

Werner, I. ^{[3
]}

Teh, S. J. ^{[3
]}

Reuter, J. E. ^{[4
]}

机构：

[1] Bachand & Associates, Davis, CA 95618 USA

[2] Desert Res Inst, Reno, NV 89512 USA

[3] Univ Calif Davis, Sch Vet Med, Dept Anat Physiol & Cell Biol, Aquat Toxicol Program, Davis, CA 95616 USA

[4] Univ Calif Davis, Dept Environm Sci, Tahoe Environm Res Ctr, Davis, CA 95616 USA

来源：

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY | 2009年 / 72卷 / 07期

基金：

美国农业部;

关键词：

Coagulants; Ecotoxicity; Medaka (Oryzias latipes); Stormwater; Runoff; LAKE TAHOE; URBAN RUNOFF; WASTE-WATER; METALS;

D O I：

10.1016/j.ecoenv.2009.04.004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Coagulant dosing of stormwater runoff with polyaluminum chlorides (PACs) is used in numerous waterbodies to improve water clarity, but the potential risks of PACs to aquatic organisms in Lake Tahoe, California are not fully understood. To assess these risks, the USEPA 3-species toxicity test and a nonstandard fish test using Japanese medaka (Oryzias latipes) were used to determine the toxicity of PAC-treated and non-treated stormwater samples to aquatic species. Stormwater samples were collected from three sites representing runoff from different urbanized areas in May 2004; samples received coagulant dosing using three different coagulants (JC1720, PAX-XL9, Sumalchlor50) at levels optimized with jar testing. Raw stormwaters were toxic to algae and fathead minnows (mortality). Treatment with coagulants increased toxicity to zooplankton (reproduction) and had no consistent effects on the other toxicity metrics. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：1933 / 1941

页数：9

共 27 条

[1] Coagulant toxicity and effectiveness in a slaughterhouse wastewater treatment plant [J].