Study on decaying characteristics of activated sludge from a circular plug-flow reactor using response surface methodology

•Combine DHA and LIVE/DEAD test to distinguish the death or activity reduce of cell.•Use response surface methodology to design the decay experiment of activated sludge.•Use Box–Behnken design to evaluate the effects and interactions of the three factors.•The model of activity decay and cell death o...

Ausführliche Beschreibung