Transcription of Wastewater Technology Fact Sheet: Ozone Disinfection
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Wastewater Technology Fact Sheet: Ozone Disinfection
United StatesEnvironmental ProtectionAgencyOffice of WaterWashington, 832-F-99-063 September 1999 WastewaterTechnology Fact SheetOzone DisinfectionDESCRIPTIOND isinfection is considered to be the primarymechanism for the inactivation/destruction ofpathogenic organisms to prevent the spread ofwaterborne diseases to downstream users and theenvironment. It is important that Wastewater beadequately treated prior to Disinfection in order forany disinfectant to be effective. Table 1 lists somecommon microorganisms found in domesticwastewater and the diseases associated with is produced when oxygen (O2) molecules aredissociated by an energy source into oxygen atomsand subsequently collide with an oxygen molecule toform an unstable gas, Ozone (O3), which is used todisinfect Wastewater . Most Wastewater treatmentplants generate Ozone by imposing a high voltagealternating current (6 to 20 kilovolts) across adielectric discharge gap that contains anoxygen-bearing gas.
destructor inlet piping be purged before opening the various systems or subsystems. When entering the ozone contactor, personnel must recognize the potential for oxygen deficiencies or trapped ozone gas in spite of best efforts to purge the system. The operato r should be aware of all emergency operating procedures required if a problem occurs.
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