| This ITRC web-based guidance document describes how biochemical reactors work, the contaminants treated, various designs, monitoring and maintenance requirements and schedules, and troubleshooting. Biochemical reactors are land-based engineered treatment systems that use an organic substrate to drive microbial and chemical reactions that reduce concentrations of metals, acidity, and sulfate in mining-influenced water. Fifteen case studies present real-world examples and include details such as volumes of water treated, substrates used, pH and metals concentrations, and biochemical reactor size. |