化工环保2017，Vol.37Issue(5)：592-597,6.DOI:10.3969/j.issn.1006-1878.2017.05.019
U (Ⅵ)在处置场地质环境中迁移规律的模拟研究
Simulation study on migration of U (Ⅵ) in geological environment of disposal site
摘要
Abstract
Using the soil from a very low level radioactive waste disposal site in southwestern of China as research object,the geologic parameters of the disposal site were obtained by static and dynamic adsorption experiments,and combined with PHREEQC software and groundwater modeling system (GMS),the chemical species and migration ofU (Ⅵ) in the disposal site soil were predicted.The research result showed that:The adsorption equilibrium time ofU (Ⅵ) in the disposal site soil was 20 d with 358 mL/g of the adsorption partition coefficient;U (Ⅵ)in groundwater of the disposal site was mainly in the form of UO2 (CO3) 22-and UO2 (CO3)34-;In 30 a of safe operation of the closed disposal site,the U (Ⅵ)mass concentration of soil in the disposal site centre will decrease by 4.20％,and that of soil at outer-ring 50 m and downstream boundary will be 3.40％ and 1.32％ of the initial value respectively;After 12 a of operation,only 0.10％ ofU (Ⅵ) will arrive at the riverside.关键词
铀/核素迁移/地下水数值模拟系统(GMS)/PHREEQC软件Key words
uranium/nuclide migration/groundwater modeling system (GMS)/PHREEQC software分类
资源环境引用本文复制引用
赖捷,成建峰,阳刚,冷阳春,庹先国..U (Ⅵ)在处置场地质环境中迁移规律的模拟研究[J].化工环保,2017,37(5):592-597,6.基金项目
国家自然科学基金重点项目(4163000426) （4163000426）
四川省应用基础研究计划项目(2014JY0206). （2014JY0206）
