Treatment of Municipal Wastewater Using a System Integrated Bioreactor of Sequencing Batch Biofilm Reactor and Filtration Separation

A system integrated bioreactor of sequencing batch biofilm reactor and filtration separation was applied to treat municipal wastewater. The test research suggested that at the condition of anaerobic time 2 h, aeration time 3 h, discharge time 0.5 h, DO in reactor 2-3 mg/L, filling water rate 67%, the CODcr and NH3-N concentrations of effluent reached the first level A standard of Discharge standard of pollutants for municipal wastewater treatment plant (GB18912-2002) and the effluent turbidity was lower than 10NTU. After addition of carbon source, the IN average concentration of effluent was 7.79 mg/L and the TN average removal rate reached 56.37%. However, this treatment process was not available in removing TP since the average removal rate of TP was 33.14%.