Treatment of 1,4-Dioxane in Groundwater using Advanced Oxidation Processes: UV/Peroxide, Ozone/Peroxide, and UV/Titanium Dioxide

摘要

In 2004, 1,4–dioxane was detected in the water supply of a groundwater treatment plant in Ontario, Canada. With no provincial regulations for 1,4-dioxane in place, the groundwater plant was proactively shut down. A treatability study was initiated to assess the suitability of various advanced oxidation process (AOP) technologies for effective reduction of 1,4-dioxane from the water supply. The study consisted of a literature review, bench-scale and pilot testing. Three AOP technologies were tested in this study. These included UV/peroxide, ozone/peroxide, and UV/titanium dioxide, all of which were capable of destructing 1,4-dioxane to low or non-detectable levels.