摘要：

制备了Mo-Na复合催化剂用于催化湿式氧化处理医药废水。结果表明：Mo-Na复合催化剂具有较大的比表面积，热稳定性较好。随着催化剂用量的增加、反应温度的提高及反应时间的增加，催化湿式氧化对废水中污染物的去除效率均逐渐提高，且反应过程中催化湿式氧化体系的去除效率明显高于湿式氧化体系。反应温度190 ℃、催化剂为1.5 g/L、反应时间3 h时，催化湿式氧化体系对废水TOC与COD去除残余率分别为0.103 9、0.137 1。随着催化剂回用次数的增加，催化剂反应活性降低，催化湿式氧化对废水的去除效果逐渐下降。

关键词: 湿式氧化, 催化湿式氧化, 催化剂, 医药废水

Abstract:

The Mo-Na composite catalyst is prepared for catalytic wet air oxidation treatment of pharmaceutical wastewater. The results show that the Mo-Na composite catalyst has a relatively large specific surface area and a relatively better thermal stability. With the increase of catalyst amount, reaction temperature and reaction time, the removal efficiency of pollutants in wastewater by catalytic wet air oxidation is gradually improved, and the removal efficiency of wastewater by catalytic wet air oxidation system is significantly higher than that of the wet air oxidation system. When the reaction temperature is 190℃, the amount of catalyst is 1.5 g/L and the reaction time is 3 h, the residual removal rate of TOC and COD in wastewater by catalytic wet air oxidation system is 0.103 9 and 0.137 1, respectively. As the times of catalyst reuse increase, the catalyst reactivity decreases, and the removal effect of catalytic wet oxidation on wastewater gradually decreases.

Key words: wet air oxidation, catalytic wet air oxidation, catalyst, pharmaceutical wastewater

中图分类号: 

• X131.2