Patent Number: 
Section: claims

1. A treating method for treating a radioactive liquid waste containing a surface active agent, comprising the steps of: adding hydrogen peroxide to said radioactive liquid waste containing said surface active agent;  charging ozone to said radioactive liquid waste while heating said radioactive liquid waste to a temperature of 50xc2x0 C. or higher, thereby forming hydroxy radicals in said radioactive liquid waste by decomposition of said ozone and said hydrogen peroxide; and  decomposing the surface active agent by said hydroxy radicals. 2. A treating method as defined in  claim 1 , wherein said ozone is charged in a plurality of aeration vessels supplied with said radioactive liquid waste, in which said ozone is charged into one of the aeration vessels and then ozone discharged therefrom is charged into another aeration vessel. claim 1 3. A treating method as defined in  claim 2 , wherein bubbles of ozone charged in said aeration vessels are broken. claim 2 4. A treating method as defined in  claim 3 , further comprising a step of removing a solid component contained in said radioactive liquid waste after said decomposing step. claim 3 5. A treating method as defined in  claim 2 , wherein an alkali solution is added to said radioactive liquid waste and pH of said radioactive liquid waste supplied to said aeration vessel is adjusted to 7 or higher. claim 2 6. A treating method as defined in  claim 5 , further comprising a step of removing a solid component contained in said radioactive liquid waste after said decomposing step. claim 5 7. A treating method as defined in  claim 2 , further comprising a step of removing a solid component contained in said radioactive liquid waste after said decomposing step. claim 2 8. A treating method as defined in  claim 1 , wherein an alkali solution is added to said radioactive liquid waste. claim 1 9. A treating method as defined in  claim 8 , further comprising a step of removing a solid component contained in said radioactive liquid waste after said decomposing step. claim 8 10. A treating method as defined in  claim 1 , further comprising a step of removing a solid component contained in said radioactive liquid waste after said decomposing step. claim 1 11. A treating method for treating a radioactive liquid waste containing a surface active agent, comprising the steps of: charging ozone to a radioactive liquid waste containing an organic substance including the surface active agent while hydrogen peroxide is present and is dissolved in said radioactive liquid waste, and while heating said radioactive liquid waste to a temperature of 50xc2x0 C. or higher;  forming hydroxy radicals in said radioactive liquid waste by decomposition of said ozone and said hydrogen peroxide; and  decomposing said surface active agent by said hydroxy radicals.