催化湿式氧化/过氧化法处理难降解有机物的研究进展

Research progress of catalytic wet oxidation/peroxidation treatment of refractory organics

常规的水处理工艺成熟,运行成本低,但其对难降解有机物的处理效果差,难以满足日益严格的排放标准.本文将催化湿式氧化法(CWAO)与催化湿式过氧化氢氧化法(CWPO)合称为催化湿式氧化/过氧化法,两者都具有效率高、占地少的显著特征,可以直接把难降解有机物分解为二氧化碳和水,已成为新的研究热点.本文综述了催化湿式氧化/过氧化法降解有机物的原理和进展,分析了催化剂对常规湿式氧化/过氧化反应过程的加速和降解效率的影响,讨论了催化湿式氧化/过氧化技术存在的主要制约瓶颈,提出了有机物的定向调控转化和资源化是今后减污降碳的主要方向.

The conventional water treatment process is mature with low operating cost,but its treatment effect on refractory organics are poor,and it is difficult to meet the increasingly stringent emission standards.In this review,catalytic wet oxidation(CWAO)and catalytic wet hydrogen peroxide oxidation(CWPO)are collectively referred to as catalytic wet oxidation/peroxidation,both of which have the remarkable features of high efficiency and small land occupation,and refractory organics are directly decomposed into carbon dioxide and water by catalytic wet oxidation/peroxidation.Then the method has become a new research hotspot.The principles and progress of catalytic wet oxidation/peroxidation for degradation organic pollutants are reviewed,the effect of catalysts on the acceleration and degradation efficiency of common wet oxidation/peroxidation reaction processes are analyzed,and the main restrictive bottlenecks of catalytic wet oxidation/peroxidation technology are discussed.It is proposed that the directional regulation,transformation and resource utilization of organics will be the main directions of pollution reduction and carbon reduction in the future.