反渗透技术处理压水堆一回路放射性废水试验研究  

EXPERIMENTAL STUDY ON THE TREATMENT OF SIMULATED RADIOACTIVE WASTE WATER FROM PRIMARY LOOP BY REVERSE OSMOSIS

作　　者：王欣鹏[1] 蒯琳萍[1] 邵嘉慧[2] 李雯玺[2] 

机构地区：[1]上海交通大学核科学与工程学院,上海200240 [2]上海交通大学环境科学与工程学院,上海200240

出　　处：《水处理技术》2011年第8期64-67,共4页Technology of Water Treatment

基　　金：国家高技术研究发展计划863项目(2009AA050701)

摘　　要：选用聚酰胺反渗透膜处理核电站一回路放射性废水。对反渗透去除核电站一回路放射性废水及反应堆停堆换料期间一回路排水中的钴离子进行研究。在不同操作压力及浓度下,考察废水中硼酸及镍离子对稳定核素钴的截留率影响。研究表明,一回路废水中含有的硼酸会降低反渗透对钴的截留率,硼酸质量浓度由2500mg.L-1下降到500mg.L-1时,去除率由79.3%上升到88.8%。截留率及膜通量随着膜面压力上升而升高,在1.4 MPa时分别达到86%及30m3.m-.2s-1。结果说明反渗透技术可以有效地去除核电站放射性废水中的钴元素,并且可以获得稳定的膜通量。Aromatic polyamide composite reverse osmosis was selected to treat radioactive waste water from primary loop.The radioactive waste water from primary loop contained high-concentration of boric acid.The effect of boric acid and nickel ion on the retention efficiency of non-active nuclides cobalt ions and membrane permeation flux were explored under different concentrations and operating pressures.The study showed that boric acid in the radioactive waste water could undermine the retention efficiency of cobalt.When the concentration of boric acid decreased from 2500 to 500 mg·L-1,the retention efficiency rised from 79.3% to 88.8%.The retention efficiency went up with the operation pressure,the efficiency was 86% and membrane flux was 30 m3·m-2·s-1 at the pressure of 1.4 MPa.The results showed that reverse osmosis can effectively remove cobalt from radioactive nuclear waste,and meanwhile got a stable membrane flux.

关 键 词：反渗透 有机膜 聚酰胺 放射性废水 

分 类 号：TQ028.8[化学工程] X591[环境科学与工程—环境工程]