Processes Involved in Early Biofilm Formation,
SWISS FEDERAL INST FOR WATER RESOURCES AND WATER POLLUTION CONTROL DUEBENDORF
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Results of Series I experiments provided the following information the rate of biofilm COD accumulation during its early formation stages was described mathematically using a first-order rate expression. The resultant first-order rate constant was a linear function of suspended biomass concentration and growth rate, and Reynolds number. Results of Series II work, for the thin aerobic biofilm investigated, showed the following 1 Although particle deposition contributes significantly to the initiation of biofilm development, its relative role in biofilm net accumulation decreases with time. 2 Biofilm decay due to maintenance requirement is insignificant for the thin biofilm considered and 3 Biofilm production and shear removal processes contribute significantly to early biofilm accumulation. Shear removal rates drastically increase as the film exceeds the viscous sublayer.