Case Study: High Efficiency Modular Treatment Of Acid Mine Drainage: Field Applications At Western U.S. Sites With The Rotating Cylinder Treatment System (RCTS)

The most common practice for treatment of acid mine drainage is lime precipitation. This process neutralizes and oxidizes the acidic water in oxidation reactors with the addition of lime. Hydroxide precipitation of most metals occurs as the pH is increased to near 8 s.u.. Ferrous iron, however does not precipitate to an acceptable concentration at pH 8 unless it is oxidized ferric iron.