| 摘要 |
<p>Removing radioactive contaminants from liquid hazardous material such as oil includes recirculating the material between a processing tank (11) and a filter medium (18). The material is heated (15) to increase viscosity during the circulation through the tank (11) and filters (18). Chemicals including chelating agents are added to enhance the removal of the radioactive elements. Water is added to the processing tank (15) or upstream, in a settling tank (31), to effect a water wash of the liquid hazardous material. A pre-filter (35) stage upstream of the settling tank (31) is followed by a mid-range filter stage (18) in the recirculation loop with the main processing tank (11). A finishing filter stage (24, 25) is in the outlet from the main processing tank.</p> |
