PURPOSE: To remove metallic ions from chelating agent-contg. chemical decontaminating liquid, by introducing the metal oxide-contg. decontaminating liquid obtained from a decontaminating process into an electrolytic cell provided with a cathode and an anode, and applying DC between the two electrodes.
CONSTITUTION: Deteriorated chemical decontaminating liquid obtained from a decontaminating process 1 is introduced into an electrolytic cell 9 provided with a cathode 4 and an anode 5, and DC is applied between the cathode 4 and the anode 5 by a DC power source 7. The chemical decontaminating liquid is regenerated by depositing metallic ions contained in it as metals on the cathode 4, withdrawn from the cathodic chamber 2 by a pump 8 and circulated for reuse in the decontaminating process. The quantity of electricity to be applied between the two electrodes in the electrolytic cell 9 is easily determined by obtaining the proper potential of the cathode from the kinds, concentrations, etc. of the metallic ions to be deposited and a chemical agent as the chemical decontaminating liquid by experimentation or calculation.
HIRA YASUO
HASEGAWA TAKASHI
MINATO AKIRA
SUMIDA NOBUO
ITOU HISAO
HITACHI ENG CO LTD
| JPS4883043A | 1973-11-06 | |||
| JPS5298900A | 1977-08-19 | |||
| JPS5326272A | 1978-03-10 |