Authors have developed the new treatment technique for hexavalent chromium (Cr6+) in the liquid waste. Cr6+ can be reduced to trivalent chromium (Cr3+) by hydrogen peroxide (H2O2) under acidic condition with small amount of secondary waste. In 2010, this technique was applied to the cooling water for iron-water shield surrounding the core region in Fugen Nuclear Power Station of Japan Atomic Energy Agency (JAEA). The concentration of Cr6+ and total chromium (Cr) were reduced to less than 0.5ppm and 2.0ppm in liquid waste, respectively. These values satisfy the water pollution prevention law.
- Nuclear Engineering Division and Environmental Engineering Division
The Treatment of Hexavalent Chromium in Waste Liquid From Fugen Decommissioning
Ishizuka, N, Sato, Y, Fujiwara, W, Yahiro, Y, Yamamoto, S, Negishi, K, Fukushima, T, Sakai, H, & Yoshida, N. "The Treatment of Hexavalent Chromium in Waste Liquid From Fugen Decommissioning." Proceedings of the ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, Volume 1. Tsukuba, Japan. October 3–7, 2010. pp. 359-364. ASME. https://doi.org/10.1115/ICEM2010-40115
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