ABSTRACT
Ozone is a strong disinfecting agent due to its powerful oxidizing capacity. It has been used in water and wastewater treatment plants globally to address various needs such as: inactivation of waterborne pathogens, oxidation of organic and inorganic contaminants, removal of taste, odor and color, and to enhance micro-coagulation. This chapter presents the use of ozonation for municipal wastewater disinfection. The chemical and physical properties of ozone, as well as its generation and antimicrobial efficacy against different microorganisms are explored. Furthermore, a summary of studies on the application of ozone as a disinfectant against various microorganisms (bacteria, viruses, and protozoa) is presented. The common models used to describe disinfection together with the mechanism of ozone action are detailed.
