BIOFOr was applied to treat the mixing pharmaceutical wastewater. BIOFOr reactor started up quickly with the
mode of combination of natural hanging and vaccination hanging,and had a good performance,high resistance to impact load
capacity,stable running. The average removal rate of COD and NH3 - N reached 72. 45% and 56. 8% respectively. The
effluent indexes of BIOFOr could completely meet the Discharge Standard of Water Pollutants for Pharmaceutical Industry
Mixing /Compounding and Formulation Category ( GB 21908 2008) . The optimum gas-water ratio of BIOFOr was 5 ∶ 1.
Combined air-water backwash mode was taken in BIOFOr.