Changes in chlorine and DOX Concentrations in Distribution Systems
作者： Hélène Baribeau , Michèle Prévost , Raymond Desjardins , Pierre Lafrance
DOI: 10.1002/J.1551-8833.2001.TB09359.X
关键词:
摘要: The fate of disinfectants and disinfection by-products (DBPs) has been studied in laboratories under a variety controlled, constant conditions, but limited information is available about their full-scale distribution systems. A study the City Laval (Quebec) system examined changes concentrations chlorine dissolved organic halogens (DOX) as water flows through system. Water was collected small- large-diameter pipes with respect to residence time (RT) each sampling point. Free total decreased increasing RT influence on decay particularly important warm water; at similar RTs, were lowest small-diameter pipes, greater main greatest batch incubations. presence corrosion appeared be major factor influencing DOX generally increased free when below method detection limit. Results pointto significant pipe concentrations. seemed attributable chemical instability some DBPs microbial biomass.
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