The attachment properties of nitrifying and heterotrophic biofilms developed in laboratory scale rotating biological contactors (RBC) were studied by measuring the development of biofilm thickness, biofilm density, activity, and detachment caused by shear stress. It was found that the nitrifying organisms formed denser and thinner biofilms. They also exhibited poorer attachment properties and were more easily detached than the heterotrophic microorganisms.
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Oga et al. (1991) studied this question.
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