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Removal of Geosmin and 2-MIB using Biological Activated Carbon Process  

Son, Dong-Min (부경대학교 환경공학과)
Son, Hee-Jong (부산광역시 상수도사업본부 수질연구소)
Lee, Hwa-Ja (부산광역시 상수도사업본부 수질연구소)
Kang, Lim-Seok (부경대학교 환경공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.23, no.2, 2009 , pp. 189-198 More about this Journal
Abstract
Tastes and odor in water caused by geosmin and 2-MIB are the major customer complaints for water utilities. Therefore, control of geosmin and 2-MIB is a worldwide concern. In this study, the effects of biofilter media type (three different activated carbons and anthracite), empty bed contact time (EBCT) and temperature on the removal of geosmin and 2-MIB in BAC filters were investigated. Experiments were conducted at three different water temperatures (5, 15 and $25^{\circ}C$) and four different EBCTs (5, 10, 15, and 20 min). The experimental results indicated that the coal based BAC retained more bacterial biomass on the surface of the activated carbon than the other BACs, and increasing EBCT or increasing water temperature also increased the geosmin and 2-MIB removal in BAC filters. To achieve above 50% of removal efficiency for geosmin and 2-MIB in a BAC filter, above 10 min EBCT at $5^{\circ}C$ and 5 min EBCT at above $15^{\circ}C$ were required. The kinetic analysis for the biodegradation of geosmin and 2-MIB indicated a first-order reaction rate at various water temperatures. Data obtained from the BAC filters at various temperatures were also used to evaluate pseudo first-order rate constants for geosmin and 2-MIB. The half-lives evaluated at 5, 15, and $25^{\circ}C$ for geosmin and 2-MIB ranged from 2.39 to 10.31 min and 3.35 to 13.97 min, respectively, which can be used to assist water utilities in designing and operating BAC system.
Keywords
Geosmin; 2-MIB; Biological activated carbon; Biodegradation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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