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AWWA WQTC59021
- Strategies for Bromate Control in Drinking Water Ozonation
- Conference Proceeding by American Water Works Association, 11/02/2003
- Publisher: AWWA
$12.00$24.00
The objective of this study is to investigate the formation of bromate during ozonation whencontrolling the pH by sulfuric acid and carbon dioxide addition in natural water. Experimentalresults will be used in a later phase of the project to develop recommendations for strategiesaimed at minimizing bromate formation during drinking water treatment with ozone whileproviding adequate CT levels for the control of C. parvum oocysts. The kinetic information willbe incorporated into a model that will be used for such a purpose.Experiments were performed with raw water from a drinking water treatment plant that has thefollowing parameters:Temperature (oF) 74.6;Turbidity (NTU) 8;pH 7.8;Conductivity (umhos/cm) 178;Alkalinity (mg/L as CaCO3) 54;Hardness (mg/L as CaCO3) 60; and,Chloride (mg/L) 18.In addition, the bromide ion concentration in the raw water was the relatively low value of25 ug/L. It was decided to spike the water with additional bromide to increase the concentrationto a target value of approximately 200 ug/L, which is more representative of the medium bromidelevels typically observed in this water.Other materials and methods discussed include reagents and solutions and the experimental setup. Includes 5 references, table, figures.
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