核电厂废液系统离子交换树脂处理技术研究  

Experimental Research on Ion Exchange Resin Technology in Liquid Radwaste System of Nuclear Power Plant

作　　者：柳丹[1] 刘杰安[1] 漏汇 何艳红[1] 王鑫[1] 朱来叶[1] 陈斌[1] 翁明辉[1] 

机构地区：[1]上海核工程研究设计院,上海200233

出　　处：《核科学与工程》2015年第4期711-717,共7页Nuclear Science and Engineering

基　　金：大型先进压水堆核电站国家科技重大专项资助项目(2010ZX06002)

摘　　要：针对核电厂废液处理系统(WLS)离子交换工艺设计中重点关注的树脂选型和运行参数影响开展非放射性环境下树脂去污能力模拟试验研究。结果表明,在进水Cs^+、Co^(2+)、Sr^(2+)各离子浓度约为10μg/L,床体积流速(Q/V)在10 BV/h或33 BV/h时,对于凝胶型阳树脂或混树脂,其交联度越大对Cs^+的去污因子(DF)越高,对Co^(2+)的DF下降,对Sr^(2+)的DF影响较小;通过增加装填层高的方式,可显著提高树脂对3种离子的去污效果;凝胶型混树脂的串联对DF有一定的改善(特别是高交联度混床串联对Co^(2+)的DF提升明显)。综合考虑高交联度凝胶型树脂对Cs^+的选择性提高、交换容量更大且床体串联对DF的改善最为显著,故工程设计优先推荐选用其进行后续放射性验证试验。Simulated experiments in non-radioactive environment are performed focusing on resin type selection and operating parameters which are major concerns in ion exchange designation in liquid radwaste system of nuclear power plant. Results show that when the influent concentration is about 10 μg/L （Cs^＋, Co^2＋ and Sr^2＋, respectively）： the higher cross-link of gel resin, the higher decontamination factor（DF） for Cs＋ removal, but the lower DF for Co^2＋ removal, and basically the same DF for Sr^2＋ removal while the volumetric velocity（Q/V） is 10 or 33 BV/h. The increase in loading height of resins is conductive to improve DF, and the mixed resins of gel type in series have certain improvement on DF（especially for those of high crosslinking degree on Co^2＋ removal）. Considering that gel resins of high cross-link with larger exchange capacity have better selectivity for Cs＋ and significant improvement for DF if connected in series, they are prior to be recommended in subsequent radioactive tests for engineering design.

关 键 词：核电厂 废液处理 离子交换 树脂 去污因子 

分 类 号：TL941.19[核科学技术—辐射防护及环境保护] X771[环境科学与工程—环境工程]