After the Fukushima accident, significant amount of radioactively contaminated waste has been generated with 50~250 m3/day and stored in tanks of the Fukushima Daiichi nuclear power plant site. The contaminated water is treated by various treatment facility such as KURION, SARRY, Reverse Osmosis, and ALPS to remove 62 radioactive nuclides except H-3. For the contaminated water treatment process, massive secondary wastes such as sludge, spent adsorbent, and so on as by-product are being generated by the facilities. In Japan, to treat the secondary wastes, melting technologies such as GeoMelt, In-can vitrification and Cold Crucible Induction Melting vitrification are considered as a candidate technologies. In this study, the technologies were reviewed, and the advantage and disadvantage of each technology were evaluated as the candidate technologies for treatment of the secondary wastes.

• Jeongsu Jeong(Korea Hydro and Nuclear Power (KHNP) Central Research Institute (KHNP-CRI))
• Deuk-Man Kim(Korea Hydro and Nuclear Power (KHNP) Central Research Institute (KHNP-CRI))
• Seok-Ju Hwang(Korea Hydro and Nuclear Power (KHNP) Central Research Institute (KHNP-CRI))
• Sunghoon Hong(Korea Hydro and Nuclear Power (KHNP) Central Research Institute (KHNP-CRI)) Corresponding author