Disinfection by-product minimisation by organic and inorganic precursor removal

Nicole Knight, Maria José Farré, Kalinda Watson, J. Keller, W. Gernjak, F.D.L. Leusch, M. Bartkow, James R. Birt, P. Burrell

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

A matrix of 18 synthetic waters with variable water quality parameters (alkalinity, natural organic matter (NOM), and halide concentration) was prepared. The DBP formation potential of these 18 samples was examined both before treatment, after enhanced coagulation (EC) and after a sequential treatment using EC followed by either powdered activated carbon (PAC), granular activated carbon (GAC), silver-impregnated activated carbon (SIAC), or MIEX® resin. The study shows that natural organic matter (NOM) concentration is greatly reduced with EC, and further reduced by each secondary treatment. Halide adsorption was not possible with EC or PAC, however, MIEX® and GAC had some halide adsorption capacity. SIAC exhibited the greatest halide removal (average 99% adsorption). Total DBP formation was reduced by EC, and further reduced by each secondary treatment process, however, specific highly brominated DBPs increased in concentration with each successive treatment step in all cases except after SIAC treatment. The more highly brominated DBPs may be of a greater public health concern than their chlorinated counterparts, therefore, in salinity-impacted waters, halide removal is desirable.
Original languageEnglish
Title of host publicationScience forum and stakeholder engagement
Subtitle of host publicationBuilding linkages, collaboration and science quality
EditorsD.K. Begbie, S.J. Kenway, S.M. Biermann, S.L. Wakem
Place of PublicationBrisbane
PublisherUrban Water Security Research Alliance
Pages146-152
Number of pages7
Publication statusPublished - 2012
EventScience forum and stakeholder engagement: Building linkages, collaboration and science quality - Brisbane, Brisbane, Australia
Duration: 19 Jun 201220 Jun 2012
http://www.urbanwateralliance.org.au

Conference

ConferenceScience forum and stakeholder engagement
CountryAustralia
CityBrisbane
Period19/06/1220/06/12
Internet address

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