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KMID : 1156220140400060477
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Journal of Environmental Health Sciences
2014 Volume.40 No. 6 p.477 ~ p.483
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Odor Characteristics of Malodorous Sulfur-containing Gas Emitted from a Sewer and Its Outlets
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Park Sang-Jin
Kwon Soo-Youl
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Abstract
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Objectives: This study was carried out to investigate the characteristics of odors emitted from sewage in a sanitary sewer and its outlets.
Methods: The concentration of mal-odorous sulfur was analyzed by gas chromatograph, and odor intensity was estimated by an on-site sensory test. Odor intensity calculated from instrumental analysis results was compared with odor intensity observed at field.
Results: As a results, the concentration of H2S ranged from 2.4 ppb to 5,889 ppb (average 703 ppb), while CH3SH, (CH3)2S, and (CH3)2S2 showed from 10 ppb to 554 ppb (average 119 ppb) and from 20 ppb to 332 ppb (average 70 ppb) and from 2.7 ppb to 8.1 ppb (average 5 ppb) individually. Average odor intensity observed in the field was degree three. Odor intensity calculated from sulfur compound concentration was confirmed as similar to the observed odor intensity because the coefficient of variance between the observed and the calculated intensities was less than one.
Conclusion: It was expected that the results of this study will be helpful to design a deodorizing device to reduce odor emissions from sewerage facilities in the future.
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KEYWORD
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Gas chromatography, Odor concentration, Odor intensity, Sewer odor, Sulfur-containing malodorous compounds
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