近年来,核电站废弃离子交换树脂的减容化处置成为国内外研究的热点。综述了核级废弃离子交换树脂减容化处理技术,包括酸消化法、芬顿湿式氧化法、等离子氧化技术和超临界水氧化技术的反应原理、方法特点、减容性、降解率、影响因素以及安全环保等方面。同时对这4种技术进行列表对比,通过各个方法的减容性、安全性以及高效性结合它们的优缺点,认为超临界水氧化法处理离子交换树脂是当前较为可行的方案之一,并对超临界水氧化技术实现工程化应用待解决的关键问题进行展望。以期为核级废弃离子交换树脂的减容化处置提供借鉴和参考。
In recent years,the reduced capacity disposal of waste ion-exchange resins in nuclear power plants has become a hot topic of research at home and abroad.The reaction principle,method characteristics,capacity reduction,degradation rate,influencing factors,safety and environmental protection of nuclear grade waste ion-exchange resins were reviewed,including acid digestion,Fenton wet oxidation,plasma oxidation and supercritical water oxidation.At the same time,a comparison of these four technologies was made,and the advantages and disadvantages of each method in terms of the capacity reduction,safety and efficiency were combined to conclude that supercritical water oxidation was one of the more feasible solutions for treating ion exchange resins,and prospected the key issues to be solved for the engineering application of supercritical water oxidation technology.It was expected to provide reference for the reduction of nuclear waste ion exchange resin disposal.
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基金资助
国家重点研发计划项目(2018YFB1900200)
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