【摘要】 利用催化臭氧氧化技术对青黛加工废水生化工段出水进行处理，对催化臭氧剂进行筛选并进行工艺优化，探讨了催化臭氧氧化工艺运行可行性。结果表明: 采用贵金属负载的多孔陶粒基催化剂催化效率最优，增加催化剂的用量并调节 pH 值至 9，可以有效提高催化臭氧氧化效率，在工艺运行初期，其色度去除速率明显高于 COD_Cr,60 min 后色度便可达到标准限值。相比不投加催化剂而言，COD_Cr去除率可以提高 25%，色度可以提前 90 min 到达国家排放标准。工艺运行 0～120 min 内，催化臭氧氧化反应速率较快，为传质控制过程，后期催化氧化速率不断减低，逐步变为反应控制而导致臭氧利用率不断降低。更多还原

【Abstract】 The catalytic ozone oxidation technology was applied for the treatment of effluent from the biochemical section of indigo naturalis processing.The ozone catalysts were screened and the processes were optimized in the study. The feasibility of ozone catalytic oxidation process was discussed. The results showed that the noble metal based catalyst supported on porous ceramsite showed the best catalytic efficiency. Increasing the amount of catalyst and adjusting the p H value to 9 effectively improved the efficiency of ozone catalytic oxidation.In the initial stage of process operation,the color removal rate was significantly higher than that of COD_Cr,and the color meeted the emission standard after 60 minutes.Compared with no catalyst,the COD_Crremoval rate improved 25%,and the color could meet the national emission standard 90 minutes in advance.Within 0 ～ 120 minutes of process operation,the ozone catalytic oxidation reaction rate was much fast due to a mass transfer control process. In the later stage,the catalytic oxidation rate decreased continuously and was gradually changed into a reaction control process resulting in the continuous reduction of ozone utilization.更多还原