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Science of The Total Environment, 2022
Booster chlorination was usually employed in water distribution systems with a long hydraulic retention time. The free chlorine decay and disinfection by-products (DBPs) transformation under booster chlorination conditions were investigated within a pilot-scale water distribution system (WDS). Compared with the initial chlorination in water plants, the
Pubin, Liao +4 more
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Booster chlorination was usually employed in water distribution systems with a long hydraulic retention time. The free chlorine decay and disinfection by-products (DBPs) transformation under booster chlorination conditions were investigated within a pilot-scale water distribution system (WDS). Compared with the initial chlorination in water plants, the
Pubin, Liao +4 more
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CXLIV. K-capture in the decay of chlorine 36
The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1955A search for the existence of K-capture in ^(36)C1 has been made using a proportional tube spectrometer with labelled methyl chloride as a gaseous source. A peak which was observed in the beta spectrum corresponded to the K-radiation of sulphur and indicated the presence of K-capture. The branching ratio K/β^- was found to be (l·7±0·1)%.
Drever, R. W. P., Moljk, A.
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Performance of Various Kinetic Models for Chlorine Decay
Journal of Water Resources Planning and Management, 2001A number of computer packages have been developed for modeling chlorine decay in water distribution networks. However, there is uncertainty as to the kinetic model that they should use for the decay mechanism. This paper explores the performance of six different kinetic models for the decay of free chlorine in over 200 bulk water samples from a number ...
Geeta Arora +7 more
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MODELLING CHLORINE DECAY IN DRINKING WATER MAINS
Environmental Engineering and Management Journal, 2008Drinking water treatment plays an important role in maintaining public health. Chlorine is the most often disinfectant used for microbiological protection of water. Required residual chlorine concentration must be in treated water when it leaves treatment plant, to comply with the regulations. The chlorine residual must be 0.5 mg/L at the entrance into
Diana Robescu +2 more
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Wall decay of chlorine in water distribution system
Journal of Water Supply: Research and Technology—AQUA, 2009Chlorination is a widely practised method of disinfection in India. The chlorine consumption in a distribution pipe is due to bulk and wall reactions. The chlorine decay due to wall reactions is particularly significant in old distribution systems with unlined metallic pipes.
G. R. Munavalli +2 more
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Residual chlorine decay in a broad, shallow river
Water Research, 1993Abstract Field investigations into the mixing and decay of discharge plumes containing total residual chlorine (TRC) concentrations of 2.0 mg/l were conducted in the North Saskatchewan River downstream from two water treatment plants in the City of Edmonton, Canada.
G.D. Milne, S.J. Stanley, D.W. Smith
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The Self-Decay Characteristics of Chlorine Dioxide in Water
Advanced Materials Research, 2012In order to learn the ClO2 decay behaviour in tap water, the kinetics of ClO2 decay in pure water was studied. Under the conditions of tap water treatment and keeping away from light, the effects of temperature and pH on ClO2 degradation were investigated.
Xin Jie Li, Dan Nan Jiang, Yue Jun Zhang
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Impact of Booster Chlorination on Chlorine Decay and THM Production: A Simulated Analysis
2005Chlorine is commonly used in drinking water treatment as both a primary disinfectant and as a secondary disinfectant to carry a residual in the distribution system. The continuing formation of disinfection by-products (DBFs), including trihalomethanes (THMs), due to reactions between residual chlorine and natural organic matter (NOM) has led utilities ...
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Realistic numerical simulation of chlorine decay in pipes
Water Research, 1998The objective of the present study is to develop a numerical mass transport model that can simulate chlorine disappearance mechanisms under low flow conditions. The model accounts for axial convection and radial diffusion in a pipe under turbulent, transitional and laminar flow regimes and uses realistic velocity profiles.
Ger, AM, Ozdemir, OSMAN NURİ
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Mathematical Modelling of Chlorine Decay in a Contact Tank
1997Recently concerns have been expressed regarding the side-effects of some disinfectants used to disinfect drinking water supply. Chlorine is, by far, the most common disinfectant used in the disinfection of drinking water supply. The purpose of a chlorine contact tank is to allow sufficient time for chlorine to achieve full disinfection before the water
Ahmad Izani Bin Md. Ismail +1 more
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