Vacuum ultraviolet irradiation for natural organic matter removal (2004)

Research Article| June 01 2004 Vacuum ultraviolet irradiation for natural organic matter removal James Thomson; James Thomson 1School of Civil and Chemical Engineering, RMIT University, GPO Box 2476V, Melbourne, Victoria 3001, Australia and Cooperative Research Centre for Water Quality and Treatment, Private Mail Bag 3, Salisbury, South Australia 5108, Australia Search for other works by this author on: This Site PubMed Google Scholar Felicity A. Roddick; Felicity A. Roddick 1School of Civil and Chemical Engineering, RMIT University, GPO Box 2476V, Melbourne, Victoria 3001, Australia and Cooperative Research Centre for Water Quality and Treatment, Private Mail Bag 3, Salisbury, South Australia 5108, Australia Tel: +61 3 9925 2080 Fax: +61 3 9925 3746; E-mail: felicity.roddick@rmit.edu.au Search for other works by this author on: This Site PubMed Google Scholar Mary Drikas Mary Drikas 2Australian Water Quality Centre and Cooperative Research Centre for Water Quality and Treatment, Private Mail Bag 3, Salisbury, South Australia 5108, Australia Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2004) 53 (4): 193–206. https://doi.org/10.2166/aqua.2004.0017 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 Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation James Thomson, Felicity A. Roddick, Mary Drikas; Vacuum ultraviolet irradiation for natural organic matter removal. Journal of Water Supply: Research and Technology-Aqua 1 June 2004; 53 (4): 193–206. doi: https://doi.org/10.2166/aqua.2004.0017 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Low pressure mercury vapour lamps were used alone and in combination with hydrogen peroxide (H2O2) to investigate the removal of natural organic matter (NOM) from highly coloured surface water, high in total organic carbon (TOC). A potential benefit of vacuum ultraviolet (VUV) irradiation is additive-free degradation of NOM by hydroxyl radicals rather than concentration and subsequent disposal problems associated with many conventional techniques. For mineralization and chromophore removal the UV/VUV/H2O2 combination was most effective, followed by UV/VUV. Photooxidation alone was inappropriate because small (but much greater than normal UV disinfection doses) and intermediate doses increased chlorine demand, trihalomethane formation potential, nitrite, hydrogen peroxide and low molecular weight carbonyl compound concentrations. Subsequent biological treatment reduced the chlorine reactivity significantly, by removal of oxidized NOM intermediates. Low molecular weight carbonyl compound concentrations in the water increased significantly on irradiation, and differences in their speciation indicated that different reaction mechanisms were dominant in different treatments. Trihalomethane (THM) distribution shifted to more highly brominated compounds as the NOM concentration decreased with treatment. Results from this preliminary study indicate that NOM can be removed from water by VUV irradiation combined with biological treatment leading to improved drinking water quality. chlorine, hydrogen peroxide (H2O2), low molecular weight carbonyl compounds, natural organic matter (NOM), nitrite (NO−2), vacuum ultraviolet (VUV) irradiation This content is only available as a PDF. © IWA Publishing 2004 You do not currently have access to this content.