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Treatment of Oil Contaminated Groundwater Using DAF and Fenton Oxidation Process  

Lee, Chaeyoung (수원대학교 공과대학 토목공학과)
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Journal of the Korean GEO-environmental Society / v.11, no.10, 2010 , pp. 49-55 More about this Journal
Abstract
The oil spill occurred frequently due to probably the increased consumption of oil as the energy source and the raw materials of various chemicals. For the treatment of oil contaminated groundwater, DAF(Dissolved Air Flotation) is being used but the removal efficiency is low. Therefore it is necessary to reduce the free phase oil, oil-in water type or water-in oil type emulsified oil, and soluble oil which are the main sources of contaminated groundwater. In this study, treatment of contaminated groundwater was performed using the Fenton oxidation process. The optimum conditions for the removal of THP(Total Petroleum Hydrocarbon) were 3 of pH, 25mM of $H_2O_2$ concentration and 25mM of $Fe^{2+}$ concentration. THP and COD(Chemical Oxygen Demand) concentrations decreased less than 1.5mg/L and 40.0mg/L in 7 minutes using DAF and Fenton oxidation process. However it is necessary to install the settling basin as the sludge concentration increased approximately 5 times.
Keywords
Contaminated groundwater; Dissolved air flotation; Total petroleum hydrocarbon; Fenton oxidation process;
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