Use KMnO₄ to Control Bromate Formation during Drinking Water Ozonation: Influencing Factors

Abstract:

This formation of bromate during ozonation of polluted source water has long caused great concerns. This paper used KMnO₄ to control the bromate formation during water ozonation. KMnO₄ was added 10 min prior ozone to oxidize the organic pollutants. The initial Br- concentration was 1000 μg/L. The results showed that the bromate formation efficiency was low (<5%) during KMnO₄-ozone oxidation. Among KMnO₄ dose, ozone dose, and source water TOC, the single most important factor for bromate formation was the ozone dose. When the ozone dose was 3 mg/L or higher, the bromate concentration exceeded the national standard no matter what level of KMnO₄ was used. The organic pollution level had little influence on the bromate formation.

• Periodical: Advanced Materials Research (Volume 499)
• Pages: 405-408
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.499.405
• Online since: April 2012
• Authors: Xu Kang, Guang Ming Zhang
• Keywords: Bromate, KMnO₄, Ozone, TOC

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