对采用加压溶气强化臭氧氧化技术降解活性艳红X-3B进行了研究。考察了反应体系溶气压力、初始pH、气水比及臭氧投加量等因素对活性艳红X-3B染料废水COD_Cr去除率及脱色率的影响，并对其降解反应动力学和机理进行了初步探讨。结果表明，加压溶气强化臭氧氧化技术可以快速降解废水中染料分子，与常压鼓泡曝气技术相比，在30 min内COD_Cr去除率提高30.3%，脱色时间缩短15 min；溶气压力的提升和臭氧投加量的增加均有利于废水COD_Cr去除和脱色，初始pH和气水比对废水COD_Cr去除率和脱色率影响较小。在加压溶气情况下，活性艳红X-3B的降解反应过程符合表观一级反应动力学方程，且表观速率常数与臭氧投加量呈正相关关系。

Using pressurized dissolved gas technology to strengthen ozonation process for degradation of reactive brilliant red X-3B is studied.The factors affecting the removal rate of chroma and COD_Cr from reactive brilliant red X-3B wastewater are examined,including pressure,initial pH,gas-liquid ratio and ozone dosage.Furthermore,the reaction kinetics and mechanism of the degradation are discussed.It is indicated that the technology using pressurized dissolved gas to strengthen ozonation can degrade rapidly dye molecules in wastewater.Compared with the atmospheric pressure bubbling aeration technology,it can increase the removal rate of COD_Cr by 30.3% in 30 minutes and shorten the decolorization time by 15 min.The increase of dissolved gas pressure and ozone dosage are favorable to the removal of COD_Cr and chroma from wastewater.However,the removal rates of COD_Cr and chroma are less affected by the initial pH and gas-liquid ratio.In addition,the degradation process of reactive brilliant red X-3B conforms to the apparent first-level reaction kinetics equation and the apparent rate constant is positively correlated with the amount of ozone dosage.

何亮明(1994-),男,硕士研究生,主要研究方向为废水深度处理技术,863121131@qq.com