title: Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation.
abstract: Ozonation is known to be very effective in the removal of odorants from source water. However, it is not known if ozonation is effective in the removal of multiple odorants causing different types of odors. In this study, the removal performance for odors and odorants were evaluated in a Water Treatment Plant (WTP), which was equipped with coagulation, sedimentation, ozonation, biological activated carbon (BAC) filtration, sand filtration, and chlorination in succession and located in the downstream of the Huangpu (HP) River, over the period from April, 2014 to April, 2015. Flavor profile analysis (FPA) results showed that the source water was constantly associated with septic and musty odors. Geosmin and 2-MIB, with an average OAV of 4.54 and 1.38, respectively, were the major odorants for musty odor, while bis(2-chloroisopropyl) ether, DEDS and DMDS with an average OAV of 2.35, 1.65 and 0.78, respectively, might be responsible for the septic odor. While the musty odor could be removed effectively through the combination of ozonation and BAC, the septic odor and associated odorants required further treatment with sand filtration and chlorination for complete removal. It is clear that the advanced treatment process was effective for the treatment of source water containing complicated odorants. It should be noted that the sedimentation process needs careful management because release of odorants may occur during the treatment. The result of this study will be helpful for the mitigation of odors in WTP using source waters suffering from complicated odor problems.
authors.affiliation: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
authors.forename: Qingyuan
authors.initials: Q
authors.lastname: Guo
authors.affiliation: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
authors.forename: Kai
authors.initials: K
authors.lastname: Yang
authors.affiliation: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China. Electronic address: jwyu@rcees.ac.cn.
authors.forename: Jianwei
authors.initials: J
authors.lastname: Yu
authors.affiliation: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
authors.forename: Chunmiao
authors.initials: C
authors.lastname: Wang
authors.affiliation: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100085, China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Wen
authors.affiliation: School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100085, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
authors.forename: Min
authors.initials: M
authors.lastname: Yang
authors.affiliation: Shanghai National Engineering Research Center of Urban Water Resources Co., Ltd., Shanghai, 200082, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Xia
authors.affiliation: Shanghai National Engineering Research Center of Urban Water Resources Co., Ltd., Shanghai, 200082, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Zhang
mesh_terms: D005374:Filtration; D009812:Odorants; D045483:Rivers; D014867:Water; D018508:Water Purification
chemical_list: D014867:Water
keywords: Biological activated carbon (BAC); Odor (odorant) removal; Odor activity value (OAV); Ozonation