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http://dx.doi.org/10.14478/ace.2017.1022

Treatment of Wastewater Containing Ethanolamine from Coolant of the Secondary System of Nuclear Power Plant by UV/GAC Adsorption Oxidation Method  

Choi, Min Jun (Department of Biochemical Engineering, Gangnueng-Wonju National University)
Kim, Hansoo (Department of Biochemical Engineering, Gangnueng-Wonju National University)
Publication Information
Applied Chemistry for Engineering / v.28, no.3, 2017 , pp. 318-325 More about this Journal
Abstract
Wastewater including ethanolamine used in the second generation of nuclear power plants is filtered out in the ion exchange resin of the condensate polishing plant. In the regeneration process of ion exchange resin, a strong acidic wastewater containing ethanolamine and a lager amount of ionic substances are released. In this study, the process involving UV oxidation part with or without absorbents was developed for treating wastewater released from the ionic exchange resin. The effect of adsorbents on the wastewater treatment was investigated by using UV oxidation system developed by us. As a result, the COD removal efficiency of UV/GAC process with the granular activated carbon (GAC) as an adsorbent was 71.3% at pH 12.8. The removal efficiency was 21.8% higher than that of the wastewater treated using UV oxidation process without any adsorbents at the same condition. The removal of T-N was 88.6% at pH 12.8 when using UV oxidation with the GAC absorbent, which was 18.0% higher than that of using the UV oxidation process without any absorbents. It is thought that ethanolamine adsorbed on the absorbent improved the efficiency of UV oxidation process. Therefore, the UV/GAC adsorption oxidation process can be more effective in treating wastewater containing ethanolamine than that of using the process without any absorbents.
Keywords
ethanolamine; UV lamp; granular active carbon (GAC); wastewater; adsorption;
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Times Cited By KSCI : 4  (Citation Analysis)
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