| 摘要 |
<p>PCT No. PCT/FR96/00225 Sec. 371 Date Aug. 4, 1997 Sec. 102(e) Date Aug. 4, 1997 PCT Filed Feb. 12, 1996 PCT Pub. No. WO96/24937 PCT Pub. Date Aug. 15, 1996A process for treating oils and solvents contaminated by radioactive substances includes a step of subjecting the oils and solvents to the action of pre-selected micro-organisms in the presence of air and a very large volume of water, relative to the volume of oils and solvents to be treated. The micro-organisms destroy organic molecules, and in particular transform them into CO2 and H2O. Further steps of the process include preparing a predetermined volume of water having predetermined characteristics of dissolved oxygen concentration, pH and redox potential and adding a predetermined charge of oils and solvents contaminated by radioactive substances to this volume of water, the charge corresponding to a volume of oils and solvents which is a predetermined fraction of the predetermined volume of water. The charge is subjected to the action of micro-organisms at a predetermined temperature and for a predetermined time period. At least a portion of the effluent obtained is removed and the water is separated from the substances contained in the effluent. The substances separated from the water are recycled or removed. The water from which the substances contained in the effluent have been removed is regenerated so that it regains the aforementioned predetermined characteristics. At least a portion of the regenerated water is recycled and the cycle is repeated from the step of preparing the predetermined volume of water.</p> |
