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Treatment of Industrial Wastewater including 1,4-Dioxane by Fenton Process and Electrochemical Iron Redox Reaction Process  

Lee, Sang Ho (상명대학교 환경공학과)
Kim, Pan Soo (상명대학교 환경공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.21, no.4, 2007 , pp. 375-383 More about this Journal
Abstract
Treatment efficiency research was performed using Fenton process and the electrochemical process in the presence of ferrous ion and hydrogen peroxide for the industrial wastewater including 1,4-Dioxane produced during polymerization of polyester. The Fenton process and the electrochemical Iron Redox Reaction (IRR) process were applied for this research to use hydroxyl radical as the powerful oxidant which is continuously produced during the redox reaction with iron ion and hydrogen peroxide. The results of $COD_{Cr}$ and the concentration of 1,4-Dioxane were compared with time interval during the both processes. The rapid removal efficiency was obtained for Fenton process whereas the slow removal efficiency was occurred for the electrochemical IRR process. The removal efficiency of $COD_{Cr}$ for 310 minutes was 84% in the electrochemical IRR process with 1,000 mg/L of iron ion concentration, whereas it was 91% with 2,000 mg/L of iron ion concentration. The lap time to remove all of 1,4-Dioxane, 330 mg/L in the wastewater took 150 minutes with 1,000 mg/L of iron ion concentration, however it took 120 minutes with 2,000 mg/L of iron ion concentration in the electrochemical IRR process.
Keywords
1,4-Dioxane; Fenton Process; Iron Redox Reaction Process; Removal efficiency of pollutants;
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