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Results from a series of batch experiments are presented, in which activated sludge obtained from an alternating type biological phosphorus removal process was exposed to nitrite or mixtures of nitrite and nitrate at various concentration levels. By comparing the course of phosphate, nitrite and nitrate (measured on-line) and the internal storage components PHB and PHV (measured manually for some...
The continuous introduction of a biological phosphorus removal (BPR) promoting organic substrate to the denitrifying reactor of a BPR process is examined through a series of batch experiments using acetate as model organic substrate. Several observations are made regarding the influence of substrate availability on PHA storage/utilization and phosphate uptake/release. Under anoxic conditions PHB...
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