A water ozone treatment followed by ultra violet ozone destruct and a granulated activated carbon (“GAC”) filter is an optimal choice. Ozone as the strongest disinfectant than any other chemical is gaining in popularity in the United States as a sanitizer over chlorine and other chemicals for two reasons. First, the transportation of chlorine to treatment plants presents its own hazards. Ozone is made on-site from air and is a safe alternative. And second, the increasing emphasis being placed on chlorine disinfection by-products (“DBPs”) needs to be considered with surface water sources.
DBPs are mainly formed during the oxidation reactions between organic materials. The reaction of chlorine with organic matter leads to the formation of chlorinated DBPs. In an emergency, local sources of water may contain high levels of organic material including pesticides that form potentially dangerous DBPs. Ozone also reacts with organic matter forming aldehydes and ketones. The use of ozone, in combination with GAC, filters to remove DBPs is a process safe enough for drinking water. Ozone oxidation with GAC as an advanced process for the mineralization of pesticides has been shown to surpass levels afforded by traditional techniques.