Effects of the attaching surface on biofilm shear loss and accumulation were investigated using two granular activated carbons with very different surface structures. Experimental evaluations were performed with a completely-mixed flow reactor. The BFAC model was used to interpret the experimental results. Results showed that a very irregular carbon surface provided better protection for initial biofilm growth and an earlier start for bioregeneration than did the spherical medium. The initial biofilm loss rates for the 2 carbons were 0.0 and 0.2 day-1, respectively and the shear loss rate coefficients were increased to 0.6 to 1.2 day-1 for both carbons after complete growth. During a period of rapid biofilm growth and GAC bioregeneration, the biofilm loss rate increased as a complex function that could not be described by a simple first-order loss function.
|Number of pages
|Journal of the Water Pollution Control Federation
|3 PART 1 of 2
|Published - Mar 1988
ASJC Scopus subject areas