超临界水氧化处理核电站废阴离子交换树脂研究

辐射防护 ›› 2019, Vol. 39 ›› Issue (5): 410-415.

超临界水氧化处理核电站废阴离子交换树脂研究

潘跃龙¹,张志东¹,柴涛²,高亚华²,兰树仁²,刘玉存²

1.深圳中广核工程设计有限公司, 广东深圳 518000;
2.中北大学环境与安全工程学院,太原 030051

收稿日期:2018-11-23 出版日期:2019-09-15 发布日期:2019-10-14
作者简介:潘跃龙(1974—),男,2011年大学毕业于中央广播电视大学机械设计制造及自动化专业,2014年硕士毕业于湖南大学软件工程专业,高级工程师。E-mail:panyuelong@cgnpc.com.cn
基金资助:
本论文由深圳市科技研发资金技术攻关项目(项目编号JSGG20160606145149745)、山西省重点研发项目(项目编号201603D321019)资助。

Study on supercritical water oxidation of waste anion resin used in a nuclear power plant

PAN Yuelong¹, ZHANG Zhidong¹, CHAI Tao², GAO Yahua², LAN Shuren², LIU Yucun²

1.China Nuclear Power Design Company Ltd.,Guangdong Shenzhen 518028;
2.College of Environmental and Safety Engineering, North University of China, Taiyuan 030051

Received:2018-11-23 Online:2019-09-15 Published:2019-10-14

摘要/Abstract

摘要： 在间歇式超临界水氧化(SCWO)设备中,对粉碎处理后的阴离子交换树脂水悬浮液在超临界条件下进行了氧化降解处理。实验研究了反应温度、反应压力、反应时间、过氧系数对COD去除率的影响,同时考察了催化剂种类、反应压力和反应温度对氨氮去除率的影响。通过正交试验,得到主要因素对处理效果影响的显著程度排序为:反应温度>反应压力>反应时间>过氧系数。结果表明:在反应温度540 ℃、反应压力26 MPa、反应时间8 min、过氧系数3的条件下,COD去除率为99.65%。针对阴离子树脂中NH₃-N含量高难以去除的问题,选用不同的催化剂CuSO₄、MnO₂、CeO₂添加到反应体系中,结果表明对NH₃-N的氧化效果顺序为CuSO₄>CeO₂>MnO₂,对NH₃-N的最高降解率达到96.53%。

关键词: 超临界水氧化(SCWO), 正交试验, 阴离子交换树脂, COD, NH₃-N

Abstract: A supercritical water oxidation (SCWO)equipment of batch-type was used to study the treatment of anion resin water suspension under supercritical conditions. The effects of reaction temperature, reaction pressure, reaction time, and oxidation coefficient on the removal rate of COD were investigated experimentally. At the same time, the effects of catalyst, reaction pressure and reaction temperature on ammonia removal rate were explored. Through an orthogonal experiment, the most significant factors influencing the reaction system are ranked as follows: reaction temperature>reaction pressure>reaction time>oxidation coefficient. The experiment results show that the removal rate of COD for anion resin is 99.65% under the conditions of reaction temperature of 540 ℃, reaction pressure of 26 MPa, reaction time of 8 min, and oxidation coefficient of 3. The content of NH₃-N in anion resin is high and difficult to be removed, so catalysts CuSO₄, MnO₂, and CeO₂ were added, and the catalytic effect was ranked as CuSO₄>CeO₂>MnO₂. The maximum removal rate of NH₃-N was 96.53%.

Key words: supercritical water oxidation, orthogonal experiment, anion resin, COD, NH₃-N

潘跃龙,张志东,柴涛,高亚华,兰树仁,刘玉存. 超临界水氧化处理核电站废阴离子交换树脂研究[J]. 辐射防护, 2019, 39(5): 410-415.

PAN Yuelong, ZHANG Zhidong, CHAI Tao, GAO Yahua, LAN Shuren, LIU Yucun. Study on supercritical water oxidation of waste anion resin used in a nuclear power plant[J]. RADIATION PROTECTION, 2019, 39(5): 410-415.

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