凝集物質の産生条件と活性汚泥の膨化 : 乳業廃水の処理に関する研究(第5報)

概要

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Studies were made to determine the conditions needed for the production of the flocculant by strain no. F20 isolated from activated sludge. Casitone was effective as a nitrogen source and glucose, as a carbon source. The higher the cultivation temperature, the larger the amount of flocculant produced by this strain, but with a gradual decrease in the accompanying biomass. In addition, the flocculant production was the highest when the ratio of glucose to casitone was 1.0. Two experimental apparatuses were used for artificial wastewater treatment for comparison. The activated sludge fed with skim milk powder solution turned out to be a high sludge volume index activated sludge, while the activated sludge fed with whey powder solution remained a low sludge volume index one. The amount of flocculants extracted from the former activated sludge was nearly twice as much as that extracted from the latter activated sludge.
社団法人日本生物工学会の論文
1981-05-25