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Modelling chlorine residual decay as influenced by temperature
Water and Environment Journal, 2015AbstractTemperature is one of the most important factors affecting chlorine decay rates in drinking water systems. In this article, temperature effect on chlorine decay rates in raw and treated waters was studied. Results show that temperature affects differently the fast and slow decay phases, the latter being more sensitive to temperature variations,
Laura Monteiro +2 more
exaly +2 more sources
Chemical Engineering Journal, 2019
Abstract In order to guarantee the water quality of reclaimed water in pipeline system, a chlorine bulk-decay model is required for simulation and prediction of chlorine profiles in networks. Conventional chlorine decay models of drinking water are not applicable to reclaimed water due to its complex and varying water quality.
Zhuo Chen, Ye Du, Hong-Ying Hu
exaly +2 more sources
Abstract In order to guarantee the water quality of reclaimed water in pipeline system, a chlorine bulk-decay model is required for simulation and prediction of chlorine profiles in networks. Conventional chlorine decay models of drinking water are not applicable to reclaimed water due to its complex and varying water quality.
Zhuo Chen, Ye Du, Hong-Ying Hu
exaly +2 more sources
The effect of advanced treatment on chlorine decay in metallic pipes
Water Research, 2006Experiments were run to measure what effect advanced treatment might have on the kinetics of chlorine and chloramine decay in metallic pipes that comprise many drinking water distribution systems. A recirculating loop of 6-in diameter unlined ductile iron pipe was used to simulate turbulent flow conditions in a pipe with significant corrosion and ...
exaly +3 more sources
The decay of chlorine associated with the pipe wall in water distribution systems
Water Research, 2002Free chlorine decay rates in water distribution systems for bulk and wall demands should be modelled separately as they have different functional dependencies. Few good quality determinations of in situ wall demand have been made due to the difficulty of monitoring live systems and due to their complexity.
J R West, C F Förster, J R West
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Journal AWWA, 1997
Models of chlorine kinetics in distribution systems characterize chlorine decay as a combination of first‐order decay in the bulk liquid and first‐order or zero‐order decay reactions at the pipe wall.Proper understanding, characterization, and prediction of water quality behavior in drinking water distribution systems are critical to ensure meeting ...
John J. Vasconcelos +4 more
openaire +1 more source
Models of chlorine kinetics in distribution systems characterize chlorine decay as a combination of first‐order decay in the bulk liquid and first‐order or zero‐order decay reactions at the pipe wall.Proper understanding, characterization, and prediction of water quality behavior in drinking water distribution systems are critical to ensure meeting ...
John J. Vasconcelos +4 more
openaire +1 more source
The decay of chlorine-36 to sulphur-36
Philosophical Magazine, 1962A study has been made of the decay branches of chlorine-36 which lead to sulphur-36.The ratio of L-capture to K-capture has been determined to be 0·112 ± 0·008, from measurements in a multi-wire proportional counter. Using scintillation techniques, a weak positron branch of intensity (7_(−1)^(+3)) × 10^(−4) relative to K-capture has been detected, and ...
Dougan, P. W. +2 more
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Chlorine Decay Models and Influencing Factors
Applied Mechanics and Materials, 2014Microorganism control has a great significance for the safety of drinking water and reclaimed water. Disinfectants and its dosing quantity are particularly important. Several common chlorine disinfectants decay models were analyzed firstly in the paper.
Bo Liu +4 more
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Chlorine Decay in Auckland's Distribution System
WRPMD'99, 1999The first step in finding a cure for water quality deterioration in water distribution systems is to study how water quality varies within the distribution system and the causes and effects of this variation. This paper discusses a pilot study aimed at assessing the propagation and concentration of chlorine in a water distribution network and ...
Bassam Halabi +2 more
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Modeling of Chlorine Disinfectant Decay in Seawater
Journal of the Korean Society of Water and Wastewater, 2016Disinfectant/oxidation process is a crucial process in water treatment for supplying safe drinking water. Chlorination is still widely used for water treatment area due to its effectiveness on microbial inactivation and economic feasibility. Recently, disinfection concern in marine environment is increasing, for example, movement of hazardous marine ...
Jihee Han, Jinsik Sohn
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Chlorine Decay KINETICS of a Reservoir Water
Journal AWWA, 2001Massachusetts Water Resources Authority started adding sodium hypochlorite to its raw water (Wachusett Reservoir) in September 1997 to achieve compliance with the requirements of the Surface Water Treatment Rule for unfiltered surface water supplies, mainly the 3‐log C × T (concentration times time) value for Giardia inactivation.
Windsor Sung +3 more
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