核化学与放射化学2025，Vol.47Issue(5)：577-584,8.DOI:10.7538/hhx.2025.47.05.0577
冷冻浓缩法处理含碘模拟放射性废液
Treatment of Iodine-Containing Simulated Radioactive Wastewater by Freeze-Concentration Method
摘要
Abstract
The freeze-concentration method is a water treatment method that achieves the concentration and separation of substances under low-temperature conditions based on the principle of solid-liquid phase equilibrium in physical chemistry.Radioactive wastewater containing volatile nuclides is extremely harmful to human health,and it is of great significance to study feasible treatment methods.In this paper,the freeze-concentration method was used to treat the iodine-containing simulated solution,and a treatment process model was proposed.It was deduced that there was an inverse relationship between the decontamination factor(DF)and the volume reduction factor(VRF)for the solution at a specific freezing temperature and concentration.The factors that influence the treatment effect were studied,and the feasibility of applying this method in engineering was discussed.The results show that the reduction of nuclide concentration leads to an increase in the DF,which has little effect on the VRF.Increasing the freezing temperature leads to a rise in the DF and a decrease in the VRF.By using a multi-stage freeze-concentration method,the processing efficiency can be effectively improved.A three-stage freezing concentration treatment was carried out at-6℃ for the simulated solution containing I-mass concentration of 0.100 g/L.The results show that the DF is 108.69±9.80,the VRF is 5.81±0.48 and no secondary waste is generated.This method provides a new approach for treating radioactive waste containing volatile nuclides.关键词
挥发性核素/I-/冷冻浓缩法/放射性废液/净化因子/浓缩减容比Key words
volatile nuclides/I-/freeze-concentration method/radioactive wastewater/decontamina-tion factor/volume reduction factor分类
核科学引用本文复制引用
杜晓慧,苗彩霞,张光辉,吕海雷,韩红臣,孙琦,初丽丽,吴杰,庞洪超..冷冻浓缩法处理含碘模拟放射性废液[J].核化学与放射化学,2025,47(5):577-584,8.基金项目
中国原子能科学研究院青年英才基金资助项目(YC222412001010) （YC222412001010）
