Oxiation of Ferrous Iron by Thiobacillus ferrooxidans in a Full- Sale Rotating Biological Contactor

摘要

The performance of a full-scale rotating biological con- tactor used for the oxidation of ferrous iron by Thiobacillus ferrooxidans in drainage waters was studied. It has been shown that high volumetric rates, upt o 2.5 g/Lh can be obtained. We also examined the effects of input ferrous iron concentration and liquid retention time on reactor perfor- mance. It has been shown that when the input iron concen- tration increased, volumetric reaction rate increased while substrate conversion decreased. In general, the rotating bio- logical contractor is a promising tool for the biological treat- ment of acid mine drainage containing ferrous iron.