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To disinfect water in sewage treatment facilities, which 2 gases are used?
Ozone and Chlorine
Helium and Nitrogen
Nitrogen and Oxygen
Oxygen and Helium
First option is correct.
Common methods of disinfection include ozone, chlorine, ultraviolet light, or sodium hypochlorite. Chloramine, which is used for drinking water, is not used in the treatment of waste water because of its persistence.
By: Cammy Garg ProfileResourcesReport error
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