Comparing Static Mixer Performances at Pilot and Full Scale for Ozonation,Inactivation of Bacillus subtilis,and Bromate Formation in Water Treatment |
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| Authors: | Chandra Mysore Jérôme Leparc Richard Lake Paula Agutter Michèle Prévost |
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| Affiliation: | 1. USFilter – North American Technology Center , Two Sun Court, Suite 220, Norcross, GA, 30092, USA E-mail: ysorec@usfilte;2. Veolia Environnment , Blackwell House, Aldenham Road, Watford, Herts, WD2 2LG |
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| Abstract: | The potential benefits of using a static mixer for ozone dissolution was evaluated through comprehensive pilot- and full-scale studies under a variety of operating conditions and source waters. The static mixer pilot unit was operated side-by-side to a full-scale plant which also employed static mixers for ozonation. Based on the results obtained from this pilot study (and at other sites), it appears that an optimal ozone dose (≤0.5mgO3/mgC) applied through a static mixer dissolution system integrated with a well-designed downstream contactor can result in enhanced microbial inactivation while keeping bromate formation below 10μg/L. |
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| Keywords: | Ozone Static Mixers Bacillus subtilis Spores Disinfection Performance Bromate Formation |
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