A new biofilm-activated sludge Sequencing Batch Reactor (SBR) treatment process
for sewage or wastewater has successfully been developed as the third generation
SBR (SBR3). This new SBR3 process utilizes a multi-stage and multi-sludge SBR configuration
receiving either continuous or intermittent inflow of wastewater. Each stage has
individually controlled continuous or alternating anaerobic/anoxic/aerobic operation,
with or without mixing and recycling from the other stage(s). The configuration
and operation is dependent upon the treatment objectives and effluent discharge
requirements. In the preferred embodiment, carriers are used to facilitate control
of operating conditions.
