Ref ID : 925
Miroslav Macek; Experimental approach to the role of different ecological types of protozoa in the activated-sludge system. Int.Revue ges.Hydrobiol. 74(6):643-656, 1989
Reprint
In File
Notes
Relationship between bacteria and ciliates was investigated in continuous cultures with and without the recycling of flocculated biomass. Monocultures of ciliates of various ecological types were used together with mixed cultures of bacteria or bacteria and flagellates. The effect of ciliates on the distribution of flocculated and dispersed biomass was tested with respect to characterizing an optimum mixed culture for activated-sludge treatment. Monoprotozoal populations were not successful in stabilizing the morphology of a bacterial community in a system with recycling of floculated biomass. Stabilization was observed (with particular ecological types of ciliates) in the system with a high residence time without recycling and/or in the system with the recycling inoculated by both flagellates and ciliates.