Removal of pesticides during the drinking water treatment process at Florence water supply, Italy

Abstract

Research Article| September 01 1999 Removal of pesticides during the drinking water treatment process at Florence water supply, Italy O. Griffini; O. Griffini *Water Supply of Florence, Via Villamagna 39, 50126, Florence, Italy Search for other works by this author on: This Site PubMed Google Scholar M. L. Bao; M. L. Bao †Department of Public Health, Epidemiology and Environmental Chemistry, Florence University, Via G. Capponi 9, 50121 Florence, Italy Search for other works by this author on: This Site PubMed Google Scholar D. Burrini; D. Burrini *Water Supply of Florence, Via Villamagna 39, 50126, Florence, Italy Search for other works by this author on: This Site PubMed Google Scholar D. Santianni; D. Santianni *Water Supply of Florence, Via Villamagna 39, 50126, Florence, Italy Search for other works by this author on: This Site PubMed Google Scholar C. Barbieri; C. Barbieri *Water Supply of Florence, Via Villamagna 39, 50126, Florence, Italy Search for other works by this author on: This Site PubMed Google Scholar F. Pantani F. Pantani †Department of Public Health, Epidemiology and Environmental Chemistry, Florence University, Via G. Capponi 9, 50121 Florence, Italy Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (1999) 48 (5): 177–185. https://doi.org/10.2166/aqua.1999.0019 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo 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 O. Griffini, M. L. Bao, D. Burrini, D. Santianni, C. Barbieri, F. Pantani; Removal of pesticides during the drinking water treatment process at Florence water supply, Italy. Journal of Water Supply: Research and Technology-Aqua 1 September 1999; 48 (5): 177–185. doi: https://doi.org/10.2166/aqua.1999.0019 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Removal of pesticides from surface water during drinking water treatment processing was evaluated at two full-scale treatment plants that employed prechlorination with chlorine dioxide, powdered activated carbon (PAC) adsorption, flocc-sedimentation, sand filtration, ozonation, biological GAC filtration, and postchlorination. A two year-investigation showed that the conventional treatment process was ineffective in removing metolachlor and terbutylazine from the water. The effectiveness of an ozonation or biological GAC filtration process has proved to be very limited for complying with the EC drinking water standard of 0.1 μg/L for individual pesticides. The removal efficiency of the PAC treatment was dependent on the PAC dosage, as well as the type of flocc-sedimentation system employed. PAC combined with Pulsator flocc-sedimentation proved to be more effective for removing pesticides than PAC combined with Dorr flocc-sedimentation. An effective treatment option for removing the seasonal occurrence of pesticide pollution in surface water appears to be PAC adsorption followed by Pulsator flocc-sedimentation and ozonation. This content is only available as a PDF. © IWA Publishing 1999 You do not currently have access to this content.