Date of Award

2012

Degree Type

Thesis

Degree Name

M.A.Sc.

Department

Civil and Environmental Engineering

First Advisor

Seth, Rajesh (Civil and Environmental Engineering)

Keywords

Environmental engineering.

Rights

CC BY-NC-ND 4.0

Abstract

Municipal wastewater effluent (MWWE) is a major source of contaminants of emerging concern (CECs) in the aquatic environment. Studies have shown ozonation of MWWE to be effective in disinfection as well as transformation of the CECs. However, the characteristics of the MWWE matrix influence the oxidation efficacy with ozone. In the current study, a pilot unit was set up to examine efficiency of ozonation of MWWE in disinfection and transformation of target CECs. A transferred ozone dose (TOD) of 0.72 mg O3/mg DOC was sufficient to consistently achieve the Ontario MOE disinfection target of < 200 MPN E. coli/100 mL. A similar TOD transformed the majority of the detected CECs by over 80%. Out of the 31 CECs for which transformation efficiencies could be calculated, transformations of 21 CECs were > 80%. Transformations of 4 CECs of antibiotics group were less than 30%.

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