• Title/Summary/Keyword: Research Process Engineering

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Evaluation of Excess Sludge Reduction in the OSA Process using Kinetic Parameter and Mass Balance (동역학계수 및 물질수지를 이용한 OSA공정의 잉여슬러지 감량능 평가)

  • Nam, Duck-Hyun;Jang, Hyung-Suk;Ha, Kuem-Ryul;Kim, Joon-Kyu;Ju, Jae-Young;Jung, In-Ho;Park, Chul-Hwi
    • Journal of Korean Society on Water Environment
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    • v.25 no.4
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    • pp.530-538
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    • 2009

  • 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.

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