The failure of the primary containment in three of the Fukushima Dai-ichi reactors resulted in a cooling loop for these facilities that includes the reactor buildings, turbine buildings and the central radioactive waste processing facility.  Due to the site hydrogeology, there is an intrusion of up to 400 T/day of additional water into the process loop through the basements of these buildings. Since the accident, this has led to the capture of 400,000 T of process water that is contaminated with various radionuclides.  This paper will provide an overview of the strategy, the separation processes, and the facilities that have been installed and operated to treat the contaminated water.  Examples of the separation processes used at the Fukushima site include coprecipitation, filtration, adsorption and ion exchange.

Treatment of contaminated water at Fukushima

249th National Meeting (2015)

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