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Laboratory simulated transport of microcystin-LR and cylindrospermopsin in groundwater under the influence of stormwater ponds: implications for harvesting of infiltrated stormwater

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Edited by: Mario SchirmerEduard Hoehn, and Tobias Vogt

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Abstract

Water shortages in the southeastern United States have led to a need for more intensive management and usage of stormwater for beneficial uses such as irrigation. Harvesting of infiltrated stormwater from horizontal wells in sandy aquifer sediments beneath stormwater ponds has emerged as an alternative in need of evaluation. Cyanobacteria may proliferate in stormwater ponds; cyanotoxins produced by these organisms represent potential public health concerns. Results of two, saturated flow, sand column experiments indicate breakthrough of microcystin-LR (MCLR) and cylindrospermopsin (CYL) within 1―2 pore volumes indicating little removal attributable to sorption. Concentration-based MCLR removal efficiencies up to 90% were achieved, which we hypothesize were predominantly due to biodegradation. In contrast, CYL removal efficiencies were generally less than 15%. On the basis of these results, removal of sandy soil in the stormwater pond bottom and addition of sorption media with greater binding affinities to cyanotoxins may enhance natural attenuation processes prior to water withdrawal.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Laboratory simulated transport of microcystin-LR and cylindrospermopsin in groundwater under the influence of stormwater ponds: implications for harvesting of infiltrated stormwater
ISBN 978-1-907161-16-2
Volume 342
Year Published 2011
Language English
Publisher International Association of Hydrological Sciences
Publisher location England
Description 5 p.
Larger Work Title GQ10: Groundwater quality management in a rapidly changing world
First page 107
Last page 111
Conference Title 7th International Groundwater Quality Conference
Conference Location Zurich, Switzerland
Conference Date June 12-18 2010
Country United States
Online Only (Y/N) N
Additional Online Files (Y/N) N