Bromate Formation during Ozonation of Bromide Containing Drinking Water- a Pilot Scale Study |
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| Authors: | Tiia Myllykangas Tarja Nissinen Terttu Vartiainen |
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| Affiliation: | 1. National Public Health Institute, Division of Environmental Health, Laboratory of Chemistry , P.O. Box 95, FIN-70701, Kuopio, Finland;2. National Public Health Institute, Division of Environmental Health, Laboratory of Chemistry , P.O. Box 95, FIN-70701, Kuopio, Finland;3. University of Kuopio, Department of Environmental Sciences , P.O. Box 1627, FIN-70211, Kuopio, Finland |
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| Abstract: | The effect of bromide ion concentration, pH, temperature, alkalinity, and hydrogen peroxide content on bromate formation was studied. Increase in pH was found to give the greatest increase in bromate formation. Also increase in the ozonation temperature, bromide ion concentration and hydrogen peroxide content increased the observed bromate concentration. Only increased alkalinity decreased the bromate formation during the ozonation experiments. Bromate formation exceeded the EU limit value for bromate ion, 10 μg/l, when the initial bromide ion concentration was around 100 μg/l, except for the alkalinity of 1.4 mmol/1, when the bromate formation was 9.4 μg/l. |
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| Keywords: | Ozone Bromate Ion Bromide Ion Concentration Ozonation Pilot Scale Study Drinking Water Treatment |
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