Abstract
The structural analysis of bacterial phase in an aerobic submerged biofilter was carried out on the basis of quinone profiles. The predominant quinones at 5°C, 20°C and 35°C were, ubiquinone (Q)-8(57.3 mol%), Q-8(56.1%) and Q-7(32.8%), respectively. The predominant bacteria inhabiting the microbial film of biofilter were Proteobacteria classified into β-group at 5°C and 20°C, while those of α- and γ-groupes were inhabiting at 35°C as well.
The dissimilarity (D) between 5°C and 20°C, i.e. D (5°C, 20°C), was 23%, and D (5°C, 35°C) and D (20°C, 35°C) were 45% and 53%, respectively. It was clarified that increased temperature brought about a change in the bacterial phase inhabiting the microbial film of biofilter.
