Biological Oxidation Rate in Mine Acid Water Regimes

摘要

The velocity rate constants for biological oxidation were evaluated by employing synthetic sewage and laboratory simulated acid mine water regimes. Lowering of pH decreases the value of the rate constants until a maximum reduction of 65 percent is obtained at pH value of 4.0. Increasing concentrations of ferric ion cause a further, but small decrease in the rate constant. It was demonstrated that biological oxidation does occur in streams contaminated with acid mine drainage; consequently, the permissable discharge loadings can be calculated (by employing the reduced rate constants) either by manual computation, or the stream stretch can be developed with an analog computer programming. (WRSIC-abstract)