Integrating water temperature in chlorine decay modelling: a case study |
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Authors: | Laura Monteiro David Figueiredo Dídia Covas José Menaia |
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Affiliation: | 1. CERIS, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal;2. Urban Water Division, National Civil Engineering Laboratory, Lisboa, Portugal |
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Abstract: | Temperature is one of the factors that most influences chlorine decay rates in drinking water systems. The current paper assesses and demonstrates the importance of using a temperature dependent chlorine bulk decay model for the accurate prediction of disinfectant residuals in water supply systems. Chlorine concentration in a water transmission system was modelled for two seasons using a temperature-dependent bulk decay model at a constant and variable temperature. Results show that water temperature can vary within the system and that the accurate prediction of residuals may additionally require the incorporation of a water temperature model in the simulators. In this case study such approach was developed innovatively by establishing a water-age-dependent temperature function. |
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Keywords: | Chlorine decay water temperature water distribution modelling |
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