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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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Decay of chlorine in diluted municipal effluents
Canadian Journal of Civil Engineering, 1988Laboratory studies were conducted to develop a model for the overall decay of total residual chlorine (TRC) under various conditions in the natural streams. This model assumes that a portion of the initial chlorine concentration is used to satisfy the immediate chlorine demand and the remainder is subject to gradual decay.The important parameters ...
Shaden T. Abdel-Gawad +1 more
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Chemical Engineering Journal, 2011 All distributed drinking water receives some form of disinfection and a minimum disinfectant residual should be maintained at the customer tap. The most popular disinfectant is chlorine.
Arumugam Sathasivan +1 more
exaly +3 more sources
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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Relationship of chlorine decay and THMs formation to NOM size
Journal of Hazardous Materials, 2003Because of increasing concern about balancing health risks for pathogen control and disinfection by-product (DBP) formation in water supplies, utilities are forced to closely examine and optimize their disinfection practices. A better understanding of the relationship between the molecular weights of the natural organic matter (NOM), chlorine decay ...
Dianchen, Gang +2 more
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A new approximate solution for chlorine concentration decay in pipes
Water Research, 2008Biswas et al. (1993. A model for chlorine concentration decay in pipes. Water Res. 27(12), 1715-1724) presented an analytical solution of a two-dimensional (2-D) steady-state chlorine transport equation in a pipe under the turbulent condition and employed fractional error function and regression technique to develop an approximate solution.
Hund-Der, Yeh +3 more
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Chemosphere, 2017
This paper presents the effect of preoxidation with ferrate(VI) (FeVIO42-, Fe(VI)) prior to chlorination on chlorine decay and formation of disinfection by-products in filtered raw water from a full-scale drinking water treatment plant. The rate of chlorine decay became significantly faster as the concentration of ferrate(VI) increased.
Cong Li +7 more
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This paper presents the effect of preoxidation with ferrate(VI) (FeVIO42-, Fe(VI)) prior to chlorination on chlorine decay and formation of disinfection by-products in filtered raw water from a full-scale drinking water treatment plant. The rate of chlorine decay became significantly faster as the concentration of ferrate(VI) increased.
Cong Li +7 more
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Modeling and verifying chlorine decay and chloroacetic acid formation in drinking water chlorination
Frontiers of Environmental Science & Engineering in China, 2009This study presents a phenomenological model that can be used by the water professionals to quantify chlorine decay and disinfection byproduct (DBP) formation in water. The kinetic model was developed by introducing the concept of limiting chlorine demand and extending an established reactive species approach.
Wenjun Liu, Shaoying Qi
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