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Thursday, September 15 • 9:00am - 9:45am
Ozone on a Budget

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Ozonation is an effective means to oxidize taste and odor (T&O) causing compounds, reduce disinfection byproduct (DBP) formation, and provide disinfection during water treatment. However, ozonation can be expensive to implement, particularly at small treatment plants due to the high costs of liquid oxygen tanks, large ozone contactors, and downstream ozone capture and destruction systems. The Price River Water Improvement District Water Treatment Plant (PRWID WTP) treats 6 MGD of Price River water. Pre-sedimentation basins were added to provide pre-treatment to minimize the impact of rapid changes in raw water quality associated with treating river water. The combination of nutrient-rich waters and newly constructed pre-sedimentation basins resulted in significant algal growth and subsequent T&O issues. Ozonation was identified as the preferred method to address both T&O issues and DBPs; however, the District had concerns regarding the high costs of an ozonation system. Several innovative engineered solutions were utilized to reduce the costs of ozonation, thereby allowing the District to move forward with use of this technology. This paper will discuss the use of ozonation in water treatment, highlight the engineered solutions used at the WTP, and present finished water quality data before and after ozone addition.

Thursday September 15, 2016 9:00am - 9:45am MDT
Entrada C

Attendees (5)