Removal of 2-methylisoborneol and geosmin in surface water treatment plants in Arizona

Abstract

Research Article| June 01 2002 Removal of 2-methylisoborneol and geosmin in surface water treatment plants in Arizona Darlene Bruce; Darlene Bruce 11960 East Alameda Drive, Tempe, AZ 85282 (480) 921-0887 E-mail: [email protected] E-mail: [email protected] Search for other works by this author on: This Site PubMed Google Scholar Paul Westerhoff; Paul Westerhoff 2Arizona State University, Department of Civil and Environmental Engineering, Tempe, AZ 85287-5306, USA (480) 965-8130 E-mail: [email protected] Search for other works by this author on: This Site PubMed Google Scholar Alice Brawley-Chesworth Alice Brawley-Chesworth 3City of Phoenix Water Services Department, 23rd Avenue Water Treatment Plant, Phoenix, Arizona (602) 534-6113 E-mail: [email protected] Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2002) 51 (4): 183–198. https://doi.org/10.2166/aqua.2002.0016 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Twitter LinkedIn Tools Icon Tools Cite Icon Cite Permissions Search Site Search nav search search input Search input auto suggest search filter All ContentAll JournalsThis Journal Search Advanced Search Citation Darlene Bruce, Paul Westerhoff, Alice Brawley-Chesworth; Removal of 2-methylisoborneol and geosmin in surface water treatment plants in Arizona. Journal of Water Supply: Research and Technology-Aqua 1 June 2002; 51 (4): 183–198. doi: https://doi.org/10.2166/aqua.2002.0016 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Many utilities experience taste and odour episodes that affect the public's perception of the safety of drinking water. Two compounds responsible for earthy and musty taste and odours in drinking water supplies are geosmin and 2-methylisoborneol (MIB), which are produced by blue-green algae and actinomycetes. MIB and geosmin are typically removed in water treatment plants (WTPs) through the addition of powdered activated carbon (PAC) or strong oxidants. However, chemical addition can be costly and performance variable, depending on the water chemistry. Optimization of water treatment processes and chemical addition for removal of MIB and geosmin would be economically beneficial to utilities and provide a service to customers. Results from this research showed traditional water treatment processes (coagulation) could not be optimized for removal of MIB and geosmin. During ozonation, hydroxyl radicals accounted for a greater percentage of MIB or geosmin oxidation relative to molecular ozone oxidation. PAC adsorption experiments in Arizona drinking water showed that dissolved organic carbon competed with MIB and geosmin for PAC adsorption sites. Utilities should conduct taste and odour removal tests in local waters containing natural dissolved organic carbon and not rely on manufacturer data in ultra-pure water. Laboratory PAC experiments predicted full-scale PAC performance well. activated carbon, coagulation, geosmin, methylisoborneol, ozone This content is only available as a PDF. © IWA Publishing 2002 You do not currently have access to this content.