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Journal of Korean Society of Water and Wastewater Vol 26, No3, pp409-421, June, 2012 ,  26, 3 pp409-421, 6, 2012 1.   (ethanolamine, ETA, NH 2 CH 2 CH 2 OH)       2  pH              (Cattant , 2008; Nordmann, 2004).  pH     (40~300℃)  (6~5,000kPa)               ,        ETA pH   . ETA     3D    ETA     COD  T-N Removal of COD and T-N caused by ETA from Nuclear Power Plant Wastewater using 3D Packed Bed Bipolar Electrode System ··· * Han-Ki Kim·Joo-Young Jeong·Ja-Won Shin·Joo-Yang Park *   (2011 1217 ; 2012 314 ; 2012 61 )*Corresponding authoor : Tel.: 2220-0411, E-mail : jooypark@hanyang.ac.kr(J. Y. Park)Ethanolamine (ETA) is mainly used to prevent corrosion of pipe in secondary cooling system of nuclear power plant. Condensed ETA in wastewater could increase COD and T-N when it was emitted to natural water system. Compared to conventional treatments, elec-trochemical oxidation process using packed bed bipolar electrodes was adopted to treat COD and T-N. According to arrangement of feeder electrode, single packed bed bipolar electrode reactor and multi-paired packed bed bipolar reactor were developed and con-ventional zero-valent iron (ZVI) was selected as conducting bipolar electrode. Bipolar electrodes were coordinated three-dimensionally in the reactor. The experimental results showed that COD and T-N was little removed in unit system at different pH condition (pH 8 and 11) on 100V. However, in multi-paired system that applied 600V, COD was eliminated 80.85% (anode-cathode-anode, A-C-A) and 85.11% (cathode-anode-cathode, C-A-C), respectively. T-N was also removed 96.88% (A-C-A) and 90.63% (C-A-C), simultane-ously. Current efficiency was estimated both single and multi-paired system. At unit bipolar packed bed reactor, current efficiency was almost zero, however in multi-paired system, current efficiency was 300~500% at A-C-A and 250~350% at C-A-C. Current efficiency was over 100% hence it was confirmed that this system is more effective than conventional electrochemical oxidation system.Key words : ethanolamine, packed bed bipolar electrode reactor, electrochemical oxidation, nuclear power plant wastewater: , ,  ,