十年来低、中水平放射性废液处理技术的研究和发展

RESEARCH AND DEVELOPMENT ON THE TECHNO- LOGY FOR THE TREATMENT OF LOW - AND INTERMEDIATE - LEVEL LIQUID RADIO- ACTIVE WASTES IN THE LAST TEN YEARS

本文扼要地回顾了近十年来低、中放废液处理技术的研究和发展情况。目前,蒸发、离子交换和过滤等方法已广泛地用于处理废液。研究工作的重点是节能与提高效率。由于水泥和沥青固化方法的不足,废液固化研究是针对那些减容比高和固化物性能好的方法。在地质条件许可的情况下,操作简便和价格低廉的固化处置一体化方案已引起某些国家的关注。

At present, the research development work is concentrated on saving energyContinued on p.84) Continued from p.71)and raising efficiency. It is important to reduce the amount of liquid wastes as much as possible, to collect and treat them separately in accordance with radioactivities and compositions of liquid wastes.Evaporation, ion-exchange and filtration have been widely used in the treatment of liquid wastes.In the field of solidification, research and development activities are focused on developing processes with high volume reduction and better performance.Cementation and bitumenization methods are being developed.Under favorable geological condition, the option integrating solidification with disposal, owing to its simplified operation and low cost has been given great attention in some countries.