Accession Number:

ADP000736

Title:

Processes Involved in Early Biofilm Formation,

Descriptive Note:

Corporate Author:

SWISS FEDERAL INST FOR WATER RESOURCES AND WATER POLLUTION CONTROL DUEBENDORF

Personal Author(s):

Report Date:

1982-01-01

Pagination or Media Count:

29.0

Abstract:

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.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE