• Title/Summary/Keyword: 방사성 액체폐기물

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Assessment of Cobalt Removal from Radioactive Liquid Waste Using Electrocoagulation (방사성 액체폐기물 내 코발트 제거를 위한 전기응집공법의 활용 가능성 평가)

  • Ko, Myoung-Soo;Kim, Yong-Tae;Kim, Young-Gwang;Kim, Kyoung-Woong
    • Economic and Environmental Geology
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    • v.51 no.2
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    • pp.177-183
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    • 2018

  • This study assessed an application of electrocoagulation (EC) for the removal of cobalt (Co) in radioactive liquid waste from nuclear power plant. The EC process is an electrochemical means to remove a contaminant in wastewater and a novel process to complement the disadvantage of chemical treatment and membrane process. Radioactive liquid waste has been produced from washing process of radio nuclide power plant cooling system. The EC process eliminates Co from the electrolyte within 10 min; in addition, the dewatered sludge produced in EC process is only 0.2 g. Therefore, the EC process is a promising technique for the removal of Co in radioactive liquid waste and volume reduction of wastes.

  • https://doi.org/10.9719/EEG.2018.51.2.177 인용 PDF KSCI

A Study on the Application of Ion Crystallization Technology to the APR 1400 Liquid Waste Management System (핵종 이온 광물화 처리기술의 APR 1400 발전소 액체방사성폐기물관리계통 적용 위치에 대한 고찰)

  • Go, Kyung-Min;Kim, Chang-Lak
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.17 no.4
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    • pp.419-427
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    • 2019

  • The application of ion crystallization technology was considered as a way to increase the operating efficiency and improve the operating performance of a liquid waste management system (LWMS) in the Advanced Power Reactor 1400 (APR 1400). Although ion crystallization technology has not been practically applied to Nuclear Power Plants (NPPs) until now, a previous experimental study demonstrated that it is possible to selectively remove at least 95% of various nuclide ions present in the liquid radioactive waste of NPPs. We reviewed the possibility of applying ion crystallization technology to the existing LWMS by applying the nuclide removal rate of ion crystallization technology and prepared a way to improve the existing LWMS in the APR 1400. Furthermore, we determined the optimized application location of ion crystallization technology in the existing LWMS by considering decontamination characteristics of the ion crystallization technology and the existing LWMS design features and operating experiences. The application of ion crystallization technology to the liquid waste collection tank, where liquid radioactive materials are collected, will have the least impact on the existing design while providing the greatest improvement. It is expected that the application of ion crystallization technology to the current APR 1400 or new NPPs would increase the operating efficiency of the LWMS and result in an improvement of system performance.

  • https://doi.org/10.7733/jnfcwt.2019.17.4.419 인용 PDF KSCI