title: UV/chlorine control of drinking water taste and odour at pilot and full-scale.
abstract: Advanced oxidation processes (AOPs) can be used to destroy taste and odour-causing compounds in drinking water. This work investigated both pilot- and full-scale performance of the novel ultraviolet (UV)/chlorine AOP for the destruction of geosmin, 2-methylisoborneol (MIB) and caffeine (as a surrogate) in two different surface waters. The efficiency of the UV/chlorine process at pH 7.5 and 8.5 was comparable to that of the UV/hydrogen peroxide (UV/H2O2) process under parallel conditions, and was superior at pH 6.5. Caffeine was found to be a suitable surrogate for geosmin and MIB, and could be used as a more economical alternative to geosmin or MIB spiking for site-specific full-scale testing.
authors.affiliation: Department of Civil Engineering, University of Toronto, 35. St. George St., Toronto, Ontario M5S 1A4, Canada. Electronic address: dingwork.wang@mail.utoronto.ca.
authors.forename: Ding
authors.initials: D
authors.lastname: Wang
authors.affiliation: Bolton Photosciences Inc., 628 Cheriton Cres., NW, Edmonton, AB T6R 2M5, Canada.
authors.forename: James R
authors.initials: JR
authors.lastname: Bolton
authors.affiliation: Department of Civil Engineering, University of Toronto, 35. St. George St., Toronto, Ontario M5S 1A4, Canada.
authors.forename: Susan A
authors.initials: SA
authors.lastname: Andrews
authors.affiliation: Department of Civil Engineering, University of Toronto, 35. St. George St., Toronto, Ontario M5S 1A4, Canada.
authors.forename: Ron
authors.initials: R
authors.lastname: Hofmann
mesh_terms: D001892:Camphanes; D002713:Chlorine / Q000737:chemistry*; D060766:Drinking Water / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D009284:Naphthols; D009812:Odorants / Q000032:analysis*; D010084:Oxidation-Reduction; D010865:Pilot Projects; D013649:Taste; D014466:Ultraviolet Rays; D018508:Water Purification / Q000379:methods*
chemical_list: D001892:Camphanes; D060766:Drinking Water; D009284:Naphthols; C005536:2-methylisoborneol; D002713:Chlorine; D006861:Hydrogen Peroxide; C001278:geosmin
keywords: Advanced oxidation; Chlorine; Efficiency; Taste and odour; UV