Abstract
This project set out to determine the effectiveness of ozone as a disinfectant against highly resistant micro-organisms in wastewaters. An ozone dose of 51.5 mg/L for different lengths of time and at pH 5 and 7 was applied to both synthetic and natural samples of V. cholerae and S. typhi bacteria and the Acanthamoeba protozoa, as well as to biological pollution indicators such as total coliform (TC) and fecal coliform (FC) bacteria. Simultaneous analysis was also made of various physical-chemical parameters that might interfere with the disinfection process. Results showed at 14 minutes, all bacteria and amoeba were completely destroyed. Results also demonstrated a clear reduction in some physical/chemical parameters.
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