LONGITUDINAL DISPERSION AND BIOMASS HOLD-UP OF ANAEROBIC FLUIDIZED-BED REACTORS

Longitudinal dispersion in fluidized bed reactors was studied using pu lse-response techniques for both clean and anaerobic-biofilm coated me dia. A large number of experimental data on the longitudinal dispersio n and biofilm growth in the anaerobic fluidized bed reactors (AFBRs) w ere investigated. Some correlations applicable to fluidized beds were obtained far both the hydraulic retention time and the biomass concent ration versus the ratio Pe/Re. The biomass concentration tends to zero for a critical retention time in AFBRs. The biological growth in the bed causes an increase of Pe number. Copyright (C) 1996 IAWQ.