Recently,the technique of biologically removing Mn has become well
known. In this technique, the soluble Mn is oxidized to insoluble
metallic Mn oxides by microorganisms
The
carbon sources in drinking water are usually insufficient for the
conversion of NH4 + -N to nitrogen gas by the conventional nitrification–denitrification process.
Therefore, NH4 + -N is believed to be
converted to nitrate by nitrification