title: Evaluation of disinfection efficacy and chemical formation using MPUV ballast water treatment system (GloEn-Patrol).
abstract: This study was undertaken to evaluate the efficacy of inactivation of several indigenous marine species and the formation of oxidants and other by-products using medium-pressure ultraviolet (MPUV) ballast water treatment. The ballast water treatment system (BWTS) used in this study was composed of filtration modules as a pretreatment process, followed by a UV irradiation process equipped with a polychromatic MPUV lamp. The experiments were performed on seawater (Busan, >32 PSU) and brackish water (Nakdong River, 20-22 PSU) with flow rates of 50 and 250 m(3)/h. The disinfection efficacy of the system was evaluated using indigenous species (>50 microm and 10-50 microm) and surrogate microorganisms (E. coli and Enterococci group). The test results successfully met the D-2 regulation of the IMO (International Marine Organization). In addition, oxidants, such as H202, total residual oxidants (TRO) and OH radicals, and potential halogenated by-products, such as haloacetic acids, trihalomethanes and total organic halides, that had potentially formed after MPUV treatment, were measured. In conclusion, the ballast water treatment system employing the MPUV physical process not only effectively eliminated indigenous species in ballast water but also generated no harmful by-products.
authors.affiliation: Department of Environmental Engineering, Yonsei University, 234, Maeji-ri, Heungup-myeon, Wonju-si, Gangwon-do, Republic of Korea.
authors.forename: Yeon Jung
authors.initials: YJ
authors.lastname: Jung
authors.forename: Yeojoon
authors.initials: Y
authors.lastname: Yoon
authors.forename: Tae Sung
authors.initials: TS
authors.lastname: Pyo
authors.forename: Soo-Tae
authors.initials: ST
authors.lastname: Lee
authors.forename: Kyoungsoon
authors.initials: K
authors.lastname: Shin
authors.forename: Joon-Wun
authors.initials: JW
authors.lastname: Kang
mesh_terms: D000818:Animals; D059001:Aquatic Organisms / Q000528:radiation effects*; D004203:Disinfection / Q000379:methods*; D016877:Oxidants; D012623:Seawater / Q000032:analysis; D012767:Ships; D014466:Ultraviolet Rays
chemical_list: D016877:Oxidants