Ozone treatment is the next ...
Published by Govindasamy Manickam, GM at Adani Power Ltd.
Ozone treatment is the next alternate to Chlorine. UV is suitable for small scale immediate use application.
Membrane filtration removes all microbes but it may reappear. For bottling plants it is suitable.
But Chlorine is the best for municipality big scale application, since the residual remains for longer duration.