论文部分内容阅读
认为从中国高放废液中分离超铀元素是可行的,中国发展的TRPO流程可得到适合于地表贮存需要的去污系数值。概述了TRPO流程的研究和发展,给出了流程简图。中国现有的浓缩高放废液具有很高的盐分,当它和TRPO萃取剂接触时会出现三相。若把浓缩高放废液稀释2～3倍,再用TRPO萃取便可消除三相,并已在初步实验中显示出很好的效果。从高放废液中分离锶和铯也是可行的,分离流程正在研究中。从废液中分离超铀元素和长寿命放射性核素,为中国高放废液的处置提供了一种新的替代方法。这种分离处置方法,可以大大减少需要玻璃固化、深地层处置的高放α废物量,进而能大大节约废物的处置费用。
It is considered feasible to separate transuranic elements from high-level liquid waste in China. The TRPO process developed in China can obtain the decontamination coefficient suitable for surface storage. An overview of the TRPO process research and development, gives the process diagram. Existing concentrated HLR in China has very high salinity and appears three phases when it comes into contact with the TRPO extractant. If the concentration of high-level waste diluted 2 to 3 times, and then extracted by TRPO eliminate three-phase, and preliminary experiments have shown good results. Separation of strontium and cesium from high-level liquid waste is also feasible and the separation process is under investigation. Separation of transuranics and long-lived radionuclides from waste fluids provides a new alternative to the disposal of high-level liquid waste in China. This method of separation and disposal can greatly reduce the amount of high-level α-waste that needs to be glass-cured and deep-ground disposal, which can greatly reduce waste disposal costs.