2010•Journal of The Korean Society of Water and WastewaterRequires access
Study of optimal reduction plan for wastewater sludge generated from oil refinery
Jae‐Woo Choi, Jong‐Min Jung, Natalia Shim, Sanghyup Lee, Cheol-Hee Park
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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 : ratio = 1:30. In addition, higher reduction efficiency was obtained as reaction time was increased (30, 60, 90, 120 min) despite of low concentration. From the results, it has been investigated that electro-fenton oxidation is efficient process for oily activated sludge reduction.