Marshall Miller & Associates - Selenium Treatment Services

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Selenium Treatment Services


Marshall Miller & Associates has researched, developed, and implemented an actively managed semi-passive biochemical reactor technology for remediating selenium-impacted waters associated with mining. This effort has resulted in the development of a reliable treatment technology with a significant reduction in cost over traditional systems.



160 Weeks of Demonstration Testing Have Resulted in:
Establishing system design parameters for:


  • Optimum loading rates



  • Selenium removal rates



  • Systems construction and



  • Operational costs and performance



And, completing:


  • Hydrologic and chemistry evaluations (to determine design flow rates and concentrations) on over 20 square miles of surface-mined areas



  • Designs on forty five (45) systems with flow rates of 50 to 1,500 gpm (hydraulic capacity of 3,000 gpm) and selenium concentrations of 10 to 50 μg/L



  • A system design for cold climates (British Colombia, Can.)



  • System designs for both underground and surface mines