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.
|Original language||English (US)|
|Number of pages||7|
|Journal||Journal of the Water Pollution Control Federation|
|Issue number||3 PART 1 of 2|
|State||Published - Mar 1 1988|
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