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KMID : 1024520090180101103
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Journal of the Environmental Sciences
2009 Volume.18 No. 10 p.1103 ~ p.1114
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Characteristics of Malodor Pollutants and Their Dispersion Measured in Several Industrial Source Regions in Yangsan
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Song Sang-Keun
Shon Zang-Ho
Kim Yoo-Keun
Park Heung-Jai
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Abstract
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In this study, the environmental behavior of malodor pollutants (MPs: H2S, CH3SH, DMS, and DMDS)
was investigated around areas influenced by strong anthropogenic processes based on observations and modeling
study (a CALPUFF dispersion model). The MP emission concentrations were measured from 8 industrial
source regions (tire plants (S1-S3), waste water disposal plant (S4), and oil refinery (S5) in an urban center
area and paper mill/incineration plant (S6) and livestock feedlots (S7-S8) in Ungsang area) in Yangsan city
during a fall period in 2008 (21 October 2008). Overall, the most MPs emitted from the urban center area
were found to affect the malodor pollution in their downwind areas during early morning (06:00 LST) and
nighttime (18:00 and 21:00 LST), compared with those in the Ungsang area. For malodor intensity, the most
MPs in the urban center area (especially S1 and S2) were found to be a significant contributor, whereas CH3SH
and H2S in the Ungsnag area (especially S6) were the dominant contributor. The model study showed agreement
in the spatial distributions of simulated MPs with those of the observations. The largest impact of MPs in
the urban center area on the malodor pollution in its residential areas occurred at S1, S2, and S3 sites during
nighttime, while that of MPs in the Ungsang area occurred at S6 and S8 sites. This may be caused mainly
by the high MP emissions and in part by wind conditions (prevailing northeasterly winds with low wind speeds
of 2-3 m/s).
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KEYWORD
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Malodor pollutant, H2S, CH3SH, CALPUFF, High emission, Wind condition
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