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Dead-end flushing of a distribution system: Short and long-term effects on water quality

2005; UWA Publishing; Volume: 54; Issue: 6 Linguagem: Inglês

10.2166/aqua.2005.0035

1365-2087

Benoît Barbeau, Karine Julienne, Annie Carrière, Vincent Gauthier,

Membrane Separation Technologies

Research Article| September 01 2005 Dead-end flushing of a distribution system: Short and long-term effects on water quality Benoit Barbeau; Benoit Barbeau 1École Polytechnique de Montréal, Industrial Chair on Drinking Water, Civil Engineering Department, Environment, PO Box 6079, Succursale Centre-Ville, Montreal, Quebec, Canada, H3C 3A7 Tel: (514) 340-4711 ext. 2988, Fax: (514) 340-5918; E-mail: benoit.barbeau@polymtl.ca Search for other works by this author on: This Site PubMed Google Scholar Karine Julienne; Karine Julienne 1École Polytechnique de Montréal, Industrial Chair on Drinking Water, Civil Engineering Department, Environment, PO Box 6079, Succursale Centre-Ville, Montreal, Quebec, Canada, H3C 3A7 Search for other works by this author on: This Site PubMed Google Scholar Annie Carriere; Annie Carriere 1École Polytechnique de Montréal, Industrial Chair on Drinking Water, Civil Engineering Department, Environment, PO Box 6079, Succursale Centre-Ville, Montreal, Quebec, Canada, H3C 3A7 Search for other works by this author on: This Site PubMed Google Scholar Vincent Gauthier Vincent Gauthier 2Compagnie Générale Des Eaux, Région Est-Service Technique, 103 Rue Aux Arènes, Metz, 57500, France Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2005) 54 (6): 371–383. https://doi.org/10.2166/aqua.2005.0035 Article history Received: April 28 2005 Accepted: June 30 2005 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 Benoit Barbeau, Karine Julienne, Annie Carriere, Vincent Gauthier; Dead-end flushing of a distribution system: Short and long-term effects on water quality. Journal of Water Supply: Research and Technology-Aqua 1 September 2005; 54 (6): 371–383. doi: https://doi.org/10.2166/aqua.2005.0035 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex The effectiveness of routine spot flushing in two dead-end locations of the Montreal distribution system (DS) was assessed. The two 203 mm (8 in) pipes were roughly 500 m long. Two successive annual spot flushings, 25 minutes each, were performed and the impact on water quality was assessed during the first 24 hours, 2 weeks later, and the following year. The flushing water was also analysed in order to evaluate the quantity and nature of loose deposits that were drained. High numbers of atypical coliforms were removed during the first annual flushing procedure. No atypical coliforms were recovered from the flushing water during the second annual procedure, suggesting that the first procedure was effective in eliminating these organisms. During the first 24 h after flushing, chlorine decreased rapidly at both dead-end locations while heterotrophic plate counts (HPC) counts increased during the same period. Therefore, only minor improvements in water quality (mainly turbidity and total iron) were measured during the two weeks after the flushing procedure. With respect to spot flushing dead-end locations on a routine basis, the principal benefits observed in this specific DS were related to short-term improvements in the aesthetic characteristics of the distributed water. dead-ends, distribution system, drinking water, loose deposits, unidirectional flushing This content is only available as a PDF. © IWA Publishing 2005 You do not currently have access to this content.