某化学锆企业外排废水放射性超标原因及整改措施  

Rectification Measures and Reasons of Discharged Effluent Over Radiation Criteria From a Chemical Zirconium Factory

作　　者：郭庆礼[1] 王岩[1] GUO Qing-li;WANG Yan(Beijing Research Institute of Chemical Engineering and Metallurgy,CNNC,Beijing 101149,China)

机构地区：[1]核工业北京化工冶金研究院

出　　处：《铀矿冶》2019年第4期298-302,共5页Uranium Mining and Metallurgy

摘　　要：针对某化学锆企业外排废水放射性超标问题,从原料、成品到工艺过程进行调查和分析,结果表明放射性超标是由于重复利用的氧氯化锆结晶母液中铀、钍、镭含量比较高,并且使用了钍含量比较高的提钪萃余酸生产净水剂造成的。针对放射性核素的处理提出了整改方案,实施后外排废水放射性满足排放标准要求。Aimed at the problems of discharged effluent over radiation criteria from a chemical zirconium factory,Investigation and research from feedstock,product to technology process were carried out.The main reason of radiation over discharged standard is recycled zirconium oxychloride crystallization mother liquor which is high contents of U,Th and Ra;and high content of Th extracted Sc raffinate is applied to produce water purifier.Rectification measures were put forward to process radionuclides,and after implementation,the effluent meets the discharged standard.

关 键 词：废水 放射性 母液 萃余酸 

分 类 号：TL941[核科学技术—辐射防护及环境保护] TQ134.12[化学工程—无机化工]