Monday 10:10 James J. Gusek, Senior Project Manager,Golder Associates, Inc
Design and Operation of Bioreactors
The Passive treatment design workshop was developed for a technical audience with experience in water treatment. A strong understanding of undergraduate inorganic chemistry will be helpful.
Sulfate-Reduction Passive Treatment
There are basically two kinds of biological passive treatment cells for treating mine drainage. Aerobic Cells containing cattails and other plants are typically applicable to coal mine drainage where iron and manganese and mild acidity are problematic. Sulfate Reducing Bioreactors (SRBRs) are typically applicable to metal or coal mine drainage with high acidity and/or a wide range of metals. Most passive treatment systems employ one or both of these cell types. The track record of aerobic systems in treating coal mine drainage is impressive, especially in the eastern coalfields. SRBR’s have tremendous potential at metal mines and especially acidic coal mines but have not seen as wide an application.
This paper presents the rudiments of SRBR design and operation in treating mine drainage, including the ability to work in cold, high altitude environments; handle high flow rates of mildly affected ARD in moderate acreage footprints; treat low pH/acid drainage with a wide range of metals and anions including uranium, selenium, and sulfate; accept acid drainage containing dissolved aluminum without clogging with hydroxide sludge.
SRBRs might not be applicable in every abandoned mine situation. A phased design program of laboratory, bench, and pilot scale testing has been shown to increase the likelihood of a successful design.
BiographyMr. James J. Gusek is a Senior Project Manager with Golder Associates, Inc. based in Lakewood, Colorado and a registered professional engineer. He specializes in mine closure, mine land reclamation and design of passive treatment systems for mine influenced water. Since 1987, his work with acid rock drainage prevention and passive water treatment systems has included over three dozen projects throughout the U.S. and in England, Zambia, Malaysia, Fiji, Slovakia, Peru, Brazil, and Chile. He has published dozens of papers about passive treatment of mine influenced water, in particular acid rock drainage, and is a co-chair of the Metal Mining Sector of the Acid Drainage Technology Initiative. He graduated from the Colorado School of Mines in 1973 with a B.S. in Mining Engineering.