METHOD FOR TREATING ACTIVATED CONCRETE

摘要

PROBLEM TO BE SOLVED: To efficiently remove europium and cobalt from activated concrete.SOLUTION: A method includes: a crushing process 2 for crushing the activated concrete 1; a first cleaning process 3 for soaking the crushed concrete S1 obtained in the crushing process 2 in a treatment liquid W1 to extract cobalt and europium contained in the crushed concrete S1; a solid-liquid separation process 4 for conducting a solid-liquid separation on the crushed concrete S2 and a treatment liquid W2; after the first cleaning process 3; and a recovery process 6 for recovering cobalt and europium from the treatment liquid separated in the solid-liquid separation process 4. In the first cleaning process 3, the treatment liquid W1 is the nitric acid whose temperature is at 70°C or above and 150°C or below and the crushed concrete S1 is immersed in the treatment liquid W1 for 3 for not longer than 30 hours.