Ozonation as an Alternative to Mandatory Filtrationby Dimitrios Katehis, City Coll of New York, New York City, United States,
Abstract: The increased levels of required disinfection along with more stringent disinfection by product control as outlined in the Surface Water Treatment Rule and the Disinfectant-Disinfection By Product Rule will require many utilities to consider ozonation as an alternative disinfection process. This is of particular importance to utilities currently not filtering their water, since large costs will be incurred in the building of filtration facilities. It is proposed that using ozone as the primary disinfectant for surface waters of good quality, may simultaneously increase disinfection effectiveness and control disinfection by-products to within the prescribed limits, so that filtration plant costs can be avoided. Since ozone by-product formation is not well understood, pilot plant studies are necessary.
Subject Headings: Water quality | Water pollution | Water treatment plants | Surface water | Water policy | Filtration | Ozone
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