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Study of optimal reduction plan for wastewater sludge generated from oil refinery  

Choi, Jae-Woo (한국과학기술연구원 환경본부 물환경센터)
Jung, Jong-Min (한국과학기술연구원 환경본부 물환경센터)
Shim, Natalia (한국과학기술연구원 환경본부 물환경센터)
Lee, Sang-Hyup (한국과학기술연구원 환경본부 물환경센터)
Park, Cheol-Hee ((주)SK 기술원 Energy R&D Center)
Publication Information
Journal of Korean Society of Water and Wastewater / v.24, no.4, 2010 , pp. 395-406 More about this Journal
Abstract
In this study, anaerobic digestion, electro-oxidation and electro-fenton oxidation processes were investigated to reduce oily refinery sludge. Anaerobic digestion process was not suitable for oily activated sludge reduction because of characteristics itself and, as experimental results revealed, reduction efficiency was low for electro-oxidation process. However, 40% total suspended solid reduction of oily activated sludge was obtained by electro-fenton oxidation process, operating at pH=1, 0.5 A and $Fe^{2+}$:$H_2O_2$ ratio = 1:30. In addition, higher reduction efficiency was obtained as reaction time was increased (30, 60, 90, 120 min) despite of low $H_2O_2$ concentration. From the results, it has been investigated that electro-fenton oxidation is efficient process for oily activated sludge reduction.
Keywords
Electro-fenton oxidation; Hydrogen peroxide; Oily activated sludge; pH;
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