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Evaluation of Excess Sludge Reduction in the OSA Process using Kinetic Parameter and Mass Balance  

Nam, Duck-Hyun (Environmental Research & Engineering Team, Technology Research Institute, Daelim Industrial Co., Ltd.)
Jang, Hyung-Suk (Environmental Research & Engineering Team, Technology Research Institute, Daelim Industrial Co., Ltd.)
Ha, Kuem-Ryul (Environmental Research & Engineering Team, Technology Research Institute, Daelim Industrial Co., Ltd.)
Kim, Joon-Kyu (Environmental Research & Engineering Team, Technology Research Institute, Daelim Industrial Co., Ltd.)
Ju, Jae-Young (Department of Environmental Engineering, University of Seoul)
Jung, In-Ho (Department of Environmental Engineering, University of Seoul)
Park, Chul-Hwi (Department of Environmental Engineering, University of Seoul)
Publication Information
Journal of Korean Society on Water Environment / v.25, no.4, 2009 , pp. 530-538 More about this Journal
Abstract
The Oxic-Settling-Anaerobic (OSA) treatment process, a modified Conventional Activated Sludge (CAS) process, was developed for the purpose of sludge reduction. The insertion of a sludge holding tank into a sludge return line, an anaerobic reactor, forming an OSA process, may provide a cost-effective way of reducing excess sludge production during a process. The OSA process was evaluated for its sludge reduction ability by kinetic parameter and mass balance, with an observed excess sludge reduction of 63.5%, as $P_{X.VSS}$, compared with the conventional activated sludge process.
Keywords
Excess sludge reduction; Kinetic parameter; Mass balance; Oxic-Settling-Anaerobic (OSA);
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