水環境学会誌
Online ISSN : 1881-3690
Print ISSN : 0916-8958
ISSN-L : 0916-8958
論文
嫌気性流動床における付着生物膜内不活性有機固形物の蓄積過程のモデル化
古米 弘明今井 剛楠田 哲也
著者情報
ジャーナル フリー

1992 年 15 巻 11 号 p. 828-838

詳細
抄録

A simple model, which includes accmulation of inert organic solids such as decayed biomass and extracellular polymers, has been developed to predict the treatment efficiency, and to evaluate the accumulation of “active biomass” and the biofilm development in a methanogenic fluidized bed. Mass balance equations of substrate and biomass comprised additional rate terms of extracellular polymer production and biomass detachment, respectively.
The results of a steady-state analysis indicated that the biofilm contained a significant amount of inert organic solid when a lower detachment rate was given to the inert solids than the “active biomass”. The accumulation of inert organic solids might explain why reported maximum specific rates of acetate consumption for methanogenic biofilms were much lower than those of enriched and pure cultures of acetate utilizing methanogens. The conventional concept of solid retention time (SRT) seems to overestimate the true SRT of “active biomass”, which is a more useful index for controlling the treatment in fluidized beds. The model experiments also implied that maximum specific activities of total biofilm and washed-out biomass were fundamentally related to the biomass detachment rates at the biofilm surface. Determination of the activities of sloughed biomass would be useful to investigate the bacterial distribution in biofilms.

引用文献 (32)
データが取得できませんでした。
著者関連情報
被引用文献 (2)
データが取得できませんでした。
© 1992 公益社団法人 日本水環境学会
前の記事 次の記事
feedback
Top