Removal of Reduced Species from the Effluent of UASB Reactor Treating Domestic Wastewater
Publication: Journal of Environmental Engineering
Volume 142, Issue 11
Abstract
This paper deals with an upflow anaerobic sludge blanket (UASB) reactor’s effluent post treatment under aerobic conditions. The kinetics of stripping and oxidation of sulfides (, and ) and purgeable organic compounds are determined. The effects of dissolved oxygen (DO) and temperature on stripping and oxidation kinetics are also investigated. Batch results indicate that the effluent quality [sulfide, chemical oxygen demand (COD) and purgeable organic carbon (POC)] can be improved by 50% with aeration at DO and at hydraulic retention time (HRT) of 30 min. The results obtained in the batch studies were confirmed in full size reactors. Moreover, it was observed that sulfides in absence of dissolved oxygen are removed by stripping rather than oxidation.
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© 2016 American Society of Civil Engineers.
History
Received: Feb 24, 2015
Accepted: Feb 16, 2016
Published online: Jun 13, 2016
Published in print: Nov 1, 2016
Discussion open until: Nov 13, 2016
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