催化超临界水氧化技术处理核电站废阴离子交换树脂的研究  

Treatment of Waste Anion Exchange Resin of Nuclear Power Plant by Catalytic Supercritical Water Oxidation Technology

作　　者：兰树仁 柴涛 刘雯雯 张新宇 陈瑞华 LAN Shu-ren;CHAI Tao;LIU Wen-wen;ZHANG Xin-yu;CHEN Rui-hua(College of Environmental and Safety Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学环境与安全工程学院

出　　处：《精细化工中间体》2019年第5期54-58,共5页Fine Chemical Intermediates

基　　金：山西省重点研发计划项目（201603D321019）

摘　　要：为高效处理核电站废阴离子交换树脂,采用催化超临界水氧化技术,探究不同的均相和非均相催化剂对其NH3-N和CODCr的影响,并在此基础上,研究非均相催化剂的稳定性和复合催化剂的最佳配比。结果表明:均相催化效果顺序为CuSO4>Cu(NO3)3>MnSO4>ZnSO4>Mn(NO3)2>ZnCl2>Zn(NO3)2>Fe(NO3)3。CuSO4使阴离子树脂CODCr的去除率达99.93%,出水NH3-N达21.93 mg·L-1。CeO2、CuO、TiO2反应后没有新物质生成,MnO2反应后有Mn2O3生成。非均相催化剂中MnO2-CeO2催化效果最佳。优化配比为n(MnO2):n(CeO2)=2:3,使阴离子树脂CODCr的去除率达99.91%。Aiming at the treatment of waste anion exchange resin in nuclear power plants,the effects of different homogeneous and heterogeneous catalysts on NH3-N and CODCr were investigated by catalytic supercritical water oxidation technology.Based on this,the stability composition of heterogeneous catalysts were studied.The results showed that the order of homogeneous catalytic efficiency was CuSO4>Cu(NO3)3>MnSO4>ZnSO4>Mn(NO3)2>ZnCl2>Zn(NO3)2>Fe(NO3)3.CuSO4 removed the anion resin CODCr by 99.93%;and the effluent NH3-N reached 21.93 mg·L-1.No new substances were formed after the reaction of CeO2,CuO and TiO2,and Mn2 O3 was formed after the reaction of MnO2.The best catalytic effect of Mn02-CeO2 as heterogeneous catalyst was achieved.The optimal ratio was of 2:3(n(MnO2):n(CeO2)),which had a removal rate of 99.91% for anionic resin CODCr.

关 键 词：超临水氧化技术 阴离子交换树脂 催化剂 

分 类 号：X703.1[环境科学与工程—环境工程]