COMBINED ACTIVATED SLUDGE-BIOFILM SEQUENCING BATCH REACTOR AND PROCESS

摘要

The present invention relates to a new biofilm-activated sludge Sequencing Batch Reactor and a process. The reactor includes at least a first tank interconnected to a second tank for retaining wastewater therein and discharging wastewater therefrom, independently controllable first and second means for stage generation provided for each tank respectively, carriers for growth of biomass provided in each tank and a controller for controlling the operation of each means for stage generation to create a condition for the growth of biomass on said carriers within each tank respectively. The reactor utilizes a multi-stage 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.