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Identification of Seasonal Variations in Volatile Sulfur Compound Formation and Release from the Secondary Treatment System at a Large Wastewater Treatment Plant

Permanent URL:
http://handle.nal.usda.gov/10113/26969
Abstract:
The purpose of this study was to identify, quantify, and determine source locations of significant volatile sulfur compounds (VSCs) associated with the activated sludge treatment process at a large wastewater treatment plant. Flux chamber and wastewater headspace sampling techniques were used to capture odorous gases followed by gas chromatography mass spectrometry analysis. Olfactometric analysis corroborated the results from the chemical analysis. Dimethylsulfide (DMS) and dimethyldisulfide (DMDS) concentrations in wastewater were strongly correlated with sludge blanket depth [DMDS: r = 0.86 ( p < 0.001, df = 24) and DMS: r = 0.72 ( p < 0.001, df = 24)]. A strong statistical correlation also was established between concentrations of these two odorants in the gas samples and the recognition odor concentration [DMS: r = 0.85 ( p < 0.001, df = 13) and DMDS: r = 0.81 ( p < 0.001, df = 13)]. Results indicate that settled sludge in the anoxic environment of the secondary sedimentation basin is the most important contributor to the formation of VSCs in the activated sludge treatment system.
Author(s):
Sekyiamah, Kweku , Kim, Hyunook , McConnell, Laura L. , Torrents, Alba , Ramirez, Mark
Subject(s):
wastewater treatment , sulfur , odor compounds , odor emissions , gas emissions , sulfides , seasonal variation
Format:
p. 2261-2267.
Note:
Includes references
Source:
Water environment research : a research publication of the Water Environment Federation 2008 Dec., v. 80, no. 12
Language:
English
Year:
2008
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
File:
Download [PDF File]
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.