Biological nitrogen removal with enhanced phosphate uptake in a sequencing batch reactor using single sludge system

摘要

Simulataneous biological phosphorus and nitrogen removal with enhanced anoxic phosphate uptake was investigated in an anaerobic-aerobic-anoxic-aerobic sequencing batch reactor ((AO)_2 SBR). Significant amounts of phosphorus-accumulation organisms (PAOs) capable of denitrification could be Accumulated in a single sludge system coexisting with nitrifiers. The ratio of the anoxic phosphate uptake To the aerobic phosphate uptake capacity was increased from 11/100 to 64/100 by introducing an anoxic phase In an anaerobic-aerobic SBR.