SPATIAL DISTRIBUTION FO MICROORGANISMS AND MEASUREMENTS OF OXYGEN UPTAKE RATE AND AMMONIA UPTAKE RATE ACTIVITY IN A DRINKING WATER BIOFIL TER

摘要

The biofilm characteristics (population dynamics and biofilm composition) in a biological filter for the removal of iron, manganese and ammonium were studied in a drinking water treatment plant. The objective was to examine the spatial distribution and biological composition of active biomass that grows in a biological filter and to verify the effect of the backwashing on the quantity of fixed biomass and on the density and activity of the biological population.