UV/chlorine control of drinking water taste and odour at pilot and full-scale. (October 2015)

• Record Type: Journal Article
• Authors: Wang, Ding; Bolton, James R.; Andrews, Susan A.; Hofmann, Ron
• Is Part Of: Chemosphere. Volume 136(2015)
• Page Start: 239
• Page End: 244
• Publication Date: 2015-10
• Subjects: UV -- Chlorine -- Advanced oxidation -- Taste and odour -- Efficiency; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2015.05.049
• Languages: English
• ISSNs: 0045-6535

Abstract

Graphical abstract: Highlights: UV/chlorine is more efficient than UV/H2 O2 at pH 6.5 for geosmin and MIB removal. UV/chlorine efficiency is comparable to UV/H2 O2 at pH 7.5 and 8.5. Caffeine is a suitable surrogate for geosmin and MIB. 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/H2 O2 ) 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.