Modeling VOC Emissions in the High-Purity Oxygen Activated Sludge Process
Publication: Journal of Environmental Engineering
Volume 136, Issue 11
Abstract
Mass balances for volatile organic compounds (VOCs) were added to a structured mathematical model of the high-purity oxygen activated sludge (HPO-AS) process. The model was sized to correspond to two large existing HPO-AS treatment plants. The stripping of ten different VOCs was modeled and compared to stripping from conventional air activated sludge process. The results show that the covered aeration tanks can reduce stripping by more than 90%, depending on the specific VOC. If biodegradation is considered, the HPO-AS process degrades more than the conventional process due to the higher liquid-phase concentrations that result because of reduced stripping. The increase in biodegradation depends on the VOCs degradability but should increase to nearly 100% for highly volatile but biodegradable VOCs.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 136 • Issue 11 • November 2010
Pages: 1189 - 1196
Copyright
© 2010 ASCE.
History
Received: Mar 31, 2009
Accepted: May 20, 2010
Published online: May 21, 2010
Published in print: Nov 2010
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