Ion exchange-based treatment of 60Co contaminated well-water for storing γ irradiation source
10.3760/cma.j.issn.0254-5098.2014.08.014
- VernacularTitle:离子交换法处理60Co污染的γ辐照装置源井水
- Author:
Meng BI
;
Shilin MIAO
;
Xiaolu ZHANG
;
Youjiu ZHANG
- Publication Type:Journal Article
- Keywords:
Ion exchange method;
60Co;
Well-water storing radioactive source
- From:
Chinese Journal of Radiological Medicine and Protection
2014;34(8):617-620
- CountryChina
- Language:Chinese
-
Abstract:
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.
