Decolorization and control of bromate formation in membrane ozonation of humic-rich groundwater

Jakob Kämmler, Garyfalia Zoumpouli, Jörn Sellmann, Y. M. John Chew, Jannis Wenk & Mathias Ernst
Membrane ozonation of bromide-containing, high-color natural organic matter (NOM) containing groundwater was performed using single-tube polydimethylsiloxane (PDMS) and multi-tube polytetrafluoroethylene (PTFE) membrane contactors, and compared to batch ozonation. For membrane ozonation, dissolved ozone concentration, water color (VIS436), ultraviolet light absorption (UV254) and bromate formation were correlated with ozone dose, ozone gas concentration, hydraulic retention time and Hatta number (Ha). NOM color removal of up to 45 % for the single-tube contactor and 17 % for...
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