Growth Characteristics of Batch-Cultured Activated Sludge and Its Phosphate Elimination Capacity : Growth Characteristics of Batch-Cultured Activated Sludge (1)

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Growth characteristics of the batch-cultured and continuously cultured activated sludge were compared. The batch-cultured activated sludge was found to show a far higher rate of glucose uptake but a comparable rate of true growth, that is, growth accompanied by synthesis of nucleic acids and proteins. A large portion of the glucose rapidly taken up is accumulated in sludge in the form of polyglucose and similar polysaccharides, which later decreases gradually with the progress of DNA, RNA and protein synthesis. A decline in DO, as a result of rapid oxygen absorption, was observed upon uptake of glucose. At the same time, certain metabolic functions were found to develop under anaerobic conditions, including an organics-uptake system accompanied by phospate release. This development leads to the increase in the amount of polyphosphate in sludge, while the rapid uptake of organics not directly conjugate with growth correlates with bulking suppression.
社団法人日本生物工学会の論文
1986-10-25