Title: Compost-Free Bioreactor Treatment of Acid Rock Drainage Leviathan Mine, California 
Resource Type: document --> case study 
Country: USA 
Year: 2006 
Availability: Innovative Technology Evaluation Report EPA/540/R-06/009 
Author 1/Producer: US EPA 
Author / Producer Type: Agency, regulator or other governmental or inter-governmental body 
Report / download web link (=direct link): http://www.epa.gov/ORD/SITE/reports/540r06009/540r06009.pdf  
Format (e.g. PDF): PDF 
Size: (e.g. 20mb) 4.07 
EUGRIS Keyword(s): Contaminated land-->Remediation options-->Ex situ treatment technologies
Water resources and their management -->Stresses, quality and ecological status
 
Short description: Application of a compost-free bioreactor technology in which sulfate-reducing bacteria are nurtured to generate sulfides which scavenge dissolved metals to form metal sulfide precipitates. Unlike compost bioreactors, this technology uses a continuous liquid carbon source and a rock matrix rather than a compost or wood chip matrix which is consumed by bacteria and collapses over time. The benefits include better control of biological activity and improved hydraulic conductivity and precipitate flushing. 
Link to Organisation(s): EPA Environmental Protection Agency
 
Submitted By: Professor Paul Bardos WhoDoesWhat?      Last update: 14/05/2007

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