| 摘要 |
PURPOSE:To efficiently resolve organic matter in waste liquid without using high temperature or strong acid and reducing secondary waste by resolving with an oxidizer and then resolving with a reducer. CONSTITUTION:Radioactive waste liquid including organic matter is received for a specified amount from a waste liquid tank 1 to a reaction vessel 2 and heated to a temperature not boiling. Then, hydrogen peroxide H2O2 as oxidizing gent and Fe ion as an oxidation promotor are added for a specified amount from each tank 5, 6 to the vessel 2. Due to the reaction between H2O2 and organic matter, active oxigen is generated and the organic matter is gradually resolved. Next, H2O4 is added as a pH controller from a tank 8 to adjust the pH to 1 to 2 and a specified amount of sodium nitrite is added for reacting as an oxidizer from a tank 7. As the result of resolving reaction, the organic matter is resolved to gas such as CO2, etc., and H2O and separated into water and gas in a cooler 3. After the above process, the waste liquid 10 is condensed in a condensor 10 and the condensed liquid is mixed with a solidification matter in a solidification device 14 and solidified stably. |
