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Photo-Fenton Oxidation Treatment of Pilot Scale for the Decomposition of 1,4-dioxane Generated in a Polyester Manufacturing Process  

So, Myung-Ho (Department of Environmental Engineering, Inha University)
Han, Ji-Sun (Department of Environmental Engineering, Inha University)
Han, Thi-Hiep (Department of Environmental Engineering, Inha University)
Seo, Jang-Won (Department of Environmental Engineering, Inha University)
Kim, Chang-Gyun (Department of Environmental Engineering, Inha University)
Publication Information
Abstract
In this research, a polyester manufacturing company (i.e. K Co.) in Gumi, South Korea was investigated regarding the release of high concentrations of 1,4-dioxane(about 600 mg/L) and whether treatment prior to release should occur to meet with the level of the regulation standard (e.g., 5 mg/L in 2011). The pilot-scale (reactor volume, 10 $m^3$) treatment system using Photo-Fenton Oxidation was able to remove approximately 90% of 1,4-dioxane under the conditions that concentrations of 2,800 ppm $H_2O_2$ and 1,400 ppm $FeSO_4$ were maintained along with 10 UV-C lamps (240 ${\mu}W/cm^2$) illuminated during aeration. However, the effluent concentration of 1,4-dioxane was still high at about 60 mg/L. Thus, further investigation is needed to see whether the bench scale (reactor volume, 8.9 L) of activated sludge could facilitate the decomposition of 1,4-dioxane. As a result, 1,4-dioxane in the effluent has been decreased as low as about 2~3 mg/L. Consequently, Photo-Fenton Oxidation coupled with activated sludge process can make it possible to efficiently decompose 1,4-dioxane to keep up with that of the regulation standard.
Keywords
Photo-Fenton Oxidation; 1,4-dioxane; Polyester Wastewater; Activated Sludge Process;
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Times Cited By KSCI : 1  (Citation Analysis)
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