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- Title
Detachment of Solids and Nitrifiers in Integrated, Fixed-Film Activated Sludge Systems.
- Authors
Maas, Carol L. A.; Parker, Wayne J.; Legge, Raymond L.
- Abstract
Despite the importance of detachment to biofilm processes, detachment phenomena are not well understood. In this study, researchers investigated biofilm detachment from free-floating biofilm carriers that were established in an integrated, fixed-film activated sludge (WAS) installation in Mississauga, Ontario. A method for assessing detachment from biofilm carrier systems was devised, evaluated, and refined during this study. In the absence of substrate, superficial air velocity significantly affected the 24-hour detachment rates of total suspended solids from the carriers. Short-term growth conditions did not appear to significantly affect the rate of detachment of solids and nitrifiers. The measured solids-detachment rates were found to be described by a second order function of biofilm attached growth total solids with a detachment coefficient of 0.006 ± 0.0008 (g/m· d)[sup-1].
- Subjects
MISSISSAUGA (Ont.); ONTARIO; SLUDGE management; BIOFILMS; SUBSTRATES (Materials science); NITRIFICATION; POLYETHYLENE; SEWAGE
- Publication
Water Environment Research (10614303), 2008, Vol 80, Issue 12, p2202
- ISSN
1061-4303
- Publication type
Article
- DOI
10.2175/106143008X304758