公开(公告)号：US06214189B1

公开(公告)日：2001-04-10

申请号：US09236230

申请日：1999-01-22

申请人： Hui-Jun Won ,  Byung-Gil Ahn ,  Gye-Nam Kim ,  Hoy-Sam Kwon ,  Chul-Yong Lee ,  Chong-Hun Jung ,  Byung-Jik Lee ,  Won-Zin Oh

发明人： Hui-Jun Won ,  Byung-Gil Ahn ,  Gye-Nam Kim ,  Hoy-Sam Kwon ,  Chul-Yong Lee ,  Chong-Hun Jung ,  Byung-Jik Lee ,  Won-Zin Oh

IPC分类号： B01D6156

CPC分类号： C02F1/469 ,  B09C1/085 ,  C02F1/4696 ,  C02F1/4698 ,  C02F2101/006 ,  G21F9/30

摘要： A method and an apparatus for electrokinetically decontaminating the soil contained in a radioactive waste drum are disclosed. The radioactively contaminated soil is put into drums, and the drums are carried to a temporary storage or to a disposal site. If the extremely low level radioactive soil is decontaminated rather than carrying the soil to the temporary storage or to a disposal site, and if the decontaminated soil is returned to the nature, then the limited storage capacity can be saved. Further, if a high level radioactive soil is treated to a low level one, and if thus a low level radioactive soil is stored in a storage, then the safety is improved. In the present invention, electrodes are buried into the contaminated soil contained in a radioactive waste drum, and a dc current is supplied, so that the radioactive nuclide and impurities can be removed by the electroosmosis and the electromigration. The anode includes: (1) at least 3 or more metal tubes made of titanium or zircaloy and having a diameter of 5 cm or less; (2) at least 6 or more metal rods made of stainless steel, titanium, or zircaloy; and (3) stainless steel sieves. The cathode is a tube made of carbon steel, stainless steel, or palladium, and has a diameter of 10 cm or less.

摘要翻译： 公开了一种用于对放射性废料桶中所含的污物进行电动除菌的方法和装置。 将放射性污染的土壤放入桶中，将桶装载到临时存放处或处置场所。 如果极低水平的放射性土壤被净化而不是将土壤运送到临时储存处或处置场所，并且如果净化的土壤返回到自然界，则可以节省有限的储存能力。 此外，如果将高放射性土壤处理为低水平的放射性土壤，并且如果低水平放射性土壤储存在储存器中，则安全性得到改善。 在本发明中，将电极埋入放射性废物滚筒中的污染土壤中，并且提供直流电流，从而可以通过电渗和电迁移去除放射性核素和杂质。 阳极包括：（1）至少3个以上由钛或锆石制成的直径为5cm或更小的金属管; （2）至少6个以上由不锈钢，钛或锆石制成的金属棒; 和（3）不锈钢筛。 阴极是由碳钢，不锈钢或钯制成的管，直径为10cm以下。