Effect of addition of rhodobacter sp. To activated-sludge reactors treating piggery wastewater

摘要

Under aerobic conditions, the decay rates of purple nonsulfur bacteria (Rhodobacter sp.) in the light and dark follow first-order kinetics with rate constants of 0.22 and 0.32 day~-1, respectively. The performance of the conventional acivated-sludge reactor (CASR) treating anaerobically pretreated piggery wastewater (656-1 , 110 mg chemical oxygen demand, COD/L) can be enhanced by the addition of Rhodobacter sp.