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Odor from sewage treatment plants have the potential to cause significant annoyance and to impact the amenity. In this study, odor emission characteristics at unit process of 48 sewage treatment facilities in 39 plants were evaluated using composite odor concentration and hydrogen sulfide () concentration. The values of composite odor concentration (geometry mean) and concentration (median) for sludge treatment processes are higher than those for the other treatment processes. The composite odor concentration and concentration are distributed over a wide area in each process. Composite odor concentration (dilution ratio) was found to have the significant correlation with concentration (p=0.000 concentration accounted for 67.1% of composite odor concentration.

A Study on Odor Emission Characteristics of Domestic Sewage Treatment Facilities Using Composite Odor Concentration and Hydrogen Sulfide Concentration