凹凸棒负载型催化剂的制备及处理低浓度有机物效能  

Preparation of attapulgite supported catalyst and its efficiency in treating low concentration organic matters

作　　者：刘汉飞 朱昊 李双涛 季雨凡 黄益平 黄晶晶 倪嵩波 倪泽雨 LIU Hanfei;ZHU Hao;LI Shuangtao;JI Yufan;HUANG Yiping;HUANG Jingjing;NI Songbo;NI Zeyu(China Construction Industrial&Energy Engineering Group Co.,Ltd.,Nanjing 210000,Jiangsu,China)

机构地区：[1]中建安装集团有限公司,江苏南京210000

出　　处：《化工进展》2022年第9期5103-5108,共6页Chemical Industry and Engineering Progress

基　　金：中建安装2020年度科技研发计划(第一批,2020-05);南京市建设系统科技计划(Ks2116)。

摘　　要：面向城镇污水的高标准排放技术,为进一步提高臭氧催化氧化处理水中低浓度有机物的性能,制备了凹凸棒负载型催化剂。采用粒径分析、扫描电镜(SEM)、X射线衍射仪(XRD)、傅里叶变换红外吸收光谱仪(FTIR)、X射线光电子能谱(XPS)对催化剂进行了表征。考察了焙烧温度和焙烧时间对催化剂性能的影响,分析了优化后臭氧氧化反应催化剂对废水的处理效能。结果表明,催化剂的优化焙烧温度和焙烧时间分别为500℃和3h,且使用优化的催化剂时,从效能和效益的角度出发,废水处理性能最佳。当进气流速为0.3L/min,催化剂投量为0.4g/L,反应时间为15min时,废水化学需氧量(COD)浓度由72.5mg/L减少为47.5mg/L。铁基氧化物负载到凹凸棒后起到的作用并不是简单的功能叠加,而是实现了功能互促的效应。Towards the high standard of urban sewage discharge,attapulgite supported catalysts were prepared to improve the performance of ozonation of low concentration of organic matters.The catalysts were characterized by particle size analysis,scanning electron microscopy(SEM),X-ray diffraction(XRD),Fourier transform infrared absorption spectrometer(FTIR)and X-ray photoelectron spectroscopy(XPS).The effects of calcination temperature and calcination time on the performance of the catalysts were investigated,and the efficiency of the optimized catalyst was analyzed.The results showed that the optimal calcination temperature and calcination time were 500℃and 3h respectively,and when the influent flow,catalyst dosage and reaction time were 0.3L/min,0.4g/L and 15min respectively,the COD concentration was decreased from 72.5mg/L to 47.5mg/L.The loading of iron-based oxides on attapulgite showed significant synergetic effect.

关 键 词：排水 有机化合物 催化剂 臭氧 

分 类 号：TU992.3[建筑科学—市政工程]