CuO/Al2O3催化臭氧氧化实际含酚废水的条件优化

非均相催化臭氧氧化是一种很有潜力的高级氧化技术。本文使用浸渍沉淀法制备高效的CuO/Al2O3催化剂催化臭氧氧化实际含酚污水。通过考察CuO/Al2O3催化剂投加量，臭氧流量，初始pH等因素，确定最佳反应条件。当催化剂投加量为30g/L，臭氧流量为0.3m3/h，pH为8.80（污水初始pH值）时，反应15分钟后，酚的去除率达到98%，得到最佳的处理效果。文中也考察了污水水质因素（例如盐度、硬度、氨氮浓度等）对含酚污水降解的影响。此外还探讨了不同反应体系对含酚污水的降解效果以及对含酚污水的矿化度。与单独臭氧氧化体系相比，CuO/Al2O3催化臭氧氧化体系的矿化度高15%左右。实验结果表明CuO/Al2O3催化剂的引入可以有效提高实际含酚污水在臭氧氧化体系中的降解效果。

Optimization and effect of catalytic ozonation of actual phenolicwastewater by CuO/Al2O3

Heterogeneous catalytic ozonation is a potential advanced oxidation technology.In this paper, impregnation precipitation method was used to prepare highly efficient CuO/Al2O3 catalysts for catalytic ozonation of actual phenolic wastewater. The optimal reaction conditions were determined by investigating factors such as CuO/Al2O3 catalyst dosage, ozone flow rate, initial pH and so on. When the catalyst dosage is 30g/L, the ozone flow rate is 0.3m3/h, and the pH is 8.80 (initial pH value of the sewage), the phenol removal rate reached 98% after 15 minutes of reaction, and the best treatment effect was obtained. The paper also investigated the effect of sewage water quality factors (such as salinity, hardness, ammonia nitrogen concentration and so on) on the degradation of phenolic wastewater.In addition, the degradation effects of different reaction systems on phenolic wastewater and the degree of salinity of phenolic wastewater were also be discussed. Compared with the single ozone oxidation system, the degree of mineralization of the CuO/Al2O3 catalytic ozone oxidation system was about 15% higher. The experimental results showed that the introduction of CuO/Al2O3 catalyst could effectively improve the degradation effect of the actual phenol wastewater in the ozone oxidation system.