Citation:

Phillips, R., R. James, AND M. Magnuson. Advanced Oxidation in Challenging Waters: Effects on Performance and Microbial Toxicity. In Proceedings, WEFTEC 2017, Chicago ,IL, September 30 - October 04, 2017. U.S. EPA Office of Research and Development, Washington, DC, 6, (2017).

Impact/Purpose:

Advanced oxidation processes (AOPs) may be a viable strategy to treat waters contaminated with a variety of organic contaminants. Three AOPs are investigated including: ozone/peroxide (O3/H2O2), (ultraviolet/peroxide (UV/H2O2), and an electrochemical cell using a boron-doped diamond (BDD) electrode. This study compares the ability of these AOPs to degrade propanil in a variety of matrices that could reasonably be found in wash down/waste water and/or treatment situations including: dechlorinated tap water, 0.01% simple green soap solution, hard water, and high TOC water. The effectiveness achieved by each technology is assessed not only by contaminant degradation, but also through the difference in pre- and post-treatment microbial toxicity, a parameter rarely reported for many contaminant classes.

Description:

Advanced oxidation processes (AOPs) may be a viable strategy to treat waters contaminated with a variety of organic contaminants. Results from this study may help design effective treatment strategies for water matrices containing substances that interfere with AOP treatment, a treatment strategy often employed for contaminants resistant to other treatments.

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