| 毕梦,缪世林,张晓露,张友九.离子交换法处理60Co污染的γ辐照装置源井水[J].中华放射医学与防护杂志,2014,34(8):617-620 |
| 离子交换法处理60Co污染的γ辐照装置源井水 |
| Ion exchange-based treatment of 60Co contaminated well-water for storing γ irradiation source |
| 投稿时间：2013-10-31 |
| DOI：10.3760/cma.j.issn.0254-5098.2014.08.014 |
| 中文关键词: 离子交换法 60Co 贮源井水 |
| 英文关键词:Ion exchange method 60Co Well-water storing radioactive source |
| 基金项目:核技术利用与辐射安全监管技术支持项目（JG201211）；江苏高校优势学科建设工程资助项目（PAPD） |
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| 中文摘要: |
| 目的 选择合适的离子交换树脂处理60Co污染的贮源井水，使污染的贮源井水中放射性水平低于10 Bq/L，满足排放要求。 方法 通过亚硝酸钴钾共沉淀-β计数法测量水样中60Co的活度，比较两种不同离子交换树脂处理60Co污染模拟井水的效果，并选择净化效果较好的离子交换树脂处理60Co污染的源井水。 结果 MBD-15-SC型混合离子交换树脂对模拟井水中60Co净化效果明显高于ZGCNR50型强酸性阳离子交换树脂，大约为5.8倍；采用多次两级MBD-15-SC型混合离子交换树脂循环处理污染的源井水，可使水中60Co放射性浓度从4.16×105 Bq/L降至1.16 Bq/L。 结论 采用多次两级MBD-15-SC型混合离子交换树脂可有效处理60Co污染的源井水，处理后的贮源井水符合排放要求。 |
| 英文摘要: |
| Objective To select an efficient ion exchange resin to purify the 60Co contaminated well-water for storing radioactive source and to ensure the radioactivity of 60Co in treated well-water below 10 Bq/L. Methods The radioactivity of 60Co in the water samples was measured by using the potassium cobaltinitrite coprecipitation-β counting method. The treatment efficiencies of two different ion exchange resins for the simulated 60Co-bearing waste water were compared to select a better one to dispose of the 60Co contaminated well-water.Results The treatment efficiency of MBD-15-SC mixed ion exchange resin was about 5.8 times higher than ZGCNR50 strong-acid cation exchange resin. The radioactivity of 60Co in the contaminated well-water could be reduced from 4.16×105 Bq/L to 1.16 Bq/L by two-stage sorption of MBD-15-SC mixed ion exchange resin. Conclusions Using several times of two-stage MBD-15-SC mixed ion exchange resin could effectively purify the 60Co contaminated well-water. The quality of the treated well-water could meet the sewage discharge standards. |
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