Journal
WATER SCIENCE AND TECHNOLOGY
Volume 68, Issue 9, Pages 1969-1975Publisher
IWA PUBLISHING
DOI: 10.2166/wst.2013.451
Keywords
geosmin; odor; treated wastewater; trichloroanisole
Funding
- Grants-in-Aid for Scientific Research [23560652] Funding Source: KAKEN
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The concentrations of earthy and musty odor compounds (2-methylisoborneol (2-MIB), geosmin and 2,4,6-trichloroanisole (TCA)) in treated wastewater were measured. Concentrations of 2,4,6-TCA (4.3-37.7 ng/L) and geosmin (3.7-42.2 ng/L) higher than their odor thresholds were detected for effluents from large-scale treatment plants. The effluent from a small-scale wastewater plant treating toilet and kitchen wastewater contained the target earthy and musty odor compounds below the odor thresholds. The ozonation applied as an advanced wastewater treatment process was considerably more effective for the removal of 2,4,6-TCA than for the removal of 2-MIB and geosmin. The measured concentrations of 2,4,6-TCA in river environments without the influence of large-scale wastewater effluents were less than the odor threshold.
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