Modification of the radioactive wastewater treatment technology in the Hungarian PWR Original Research Article

This paper describes the results of a joint research program of Budapest University of Technology and Economics and the Paks Nuclear Power Plant to modify the radioactive wastewater treatment technology for the evaporator bottom residue contained in tanks in the NPP. The main characteristics of the modified technology were that we first removed all the long life radioactive isotopes with underwater plasma torch reactor (UPTR), micro and ultrafiltration and a cesium selective ion exchanger stable at pH ~ 12–13. After the separation of precipitated borate crystals, the remaining liquid was released as chemical waste.