"Lead is one of the most common contaminants in the environment today and most of the remediation techniques are cost prohibitive. Therefore, research into cost effective remediation techniques is very relevant.
Seven lab-scale constructed wetlands were used to treat water made to mimic wastewater from mines operated by Doe Run Mining Company, and one lab-scale constructed wetland was used to treat synthetic wastewater similar to Buick smelter facility effluent. Over 200 days of assay results from the effluent of the seven lab- scale wetlands showed an average lead and zinc removal of 92 ± 5% and 74 ± 8% respectively. The effect of temperature, flowrates, and substrates on the performance of these wetlands was evaluated. These factors did not have significant effects on the effluent quality.
All lab-scale wetlands treating synthetic Doe Run mine water produced a high-quality effluent but had relatively high solids concentration. The pH of the effluent was reduced to near neutrality, and the sulfate concentration was reduced.
Over 200 days of assay results from the synthetic Buick Facility smelter showed an average lead and zinc removal of 95 ± 9% and 50 ± 26% respectively. The synthetic smelter wastewater from Buick Facility produced effluents with high concentrations of sodium and sulfate. Production of sulfide was observed which might mean that there is a maximal rate of sulfate reduction. The effluent also had high solids concentration"--Abstract, page iii.
Fitch, Mark W.
Burken, Joel G. (Joel Gerard)
Civil, Architectural and Environmental Engineering
M.S. in Environmental Engineering
University of Missouri--Rolla
viii, 87 pages
© 2000 Somnath Chilukuri, All rights reserved.
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Chilukuri, Somnath, "Metals removal using constructed wetlands" (2000). Masters Theses. 1905.
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