Biochemical reactors (BCRs) are engineered treatment systems that use microorganisms and organic materials to treat mining-influenced water (MIW). They help reduce contaminants such as metals, acidity, and sulfate through natural biological and chemical reactions. Biochemical reactors can be designed for different water flow rates and levels of contamination and can operate using gravity flow or powered systems. With proper design and monitoring, biochemical reactors can operate for extended periods with limited human intervention.
The Biochemical Reactors for Treating Mining-Influenced Water (BCR-1, 2013) guidance provides an easy-to-navigate overview of how biochemical reactors can be used to treat mining-influenced water. It includes a decision tree to help determine whether biochemical reactor treatment is appropriate for a site, as well as information on testing, design, construction, operation, and monitoring. Case studies demonstrate how biochemical reactors perform under different site conditions and contaminant mixtures.
Topic(s): Biochemical Reactor, Bioreactors, Bioremediation, Groundwater, Mining, Mining Waste, Remediation Technologies
