活性汚泥法における下水B.O.D.減少曲線の解析

概要

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The removal of B.O.D. from domestic sewage by the conventional activated sludge process was studied with a laboratory type of aeration column. Postulating that the total B.O.D. in sewage originates from both dissolved and suspended substances, the rate of B.O.D. removal was studied in quantitative terms pertaining to each category of B.O.D.A marked rate of B.O.D. removal was ovserved during the initial period of contact between the sewage and the activated sludge used. The combined effects which could account for the initial rapid rate of B.O.D. removal include the dilution of total B.O.D. of sewage by activated sludge, the occlusion of suspended B.O.D. by activated sludge and in addition, include the bio-oxidation of dissolved B.O.D. by microorganisms in activated sludge. The complex nature of the sewage is considered to be responsible for the deviation of curves at t=0 in Fig. 3 from the first order type of reaction formula.
社団法人日本生物工学会の論文
1963-02-15