染整廢水主要特性為高色度及高COD處理難度高，經傳統處理程序後無法符合放流水標準。為 提高廢水處理效率及節省處理時間，本研究利用MnO2結合O3程序以達去除染料高色度及最終礦化 的目標。首先進行MnO2及O3之基礎實驗，探討操作參數對Acid Black 24染料溶液處理效率的影響， 以獲得最佳條件，操作參數包括反應時間、MnO2劑量、染料初始濃度及pH等。再以最佳條件結合 MnO2與O3以加速染料降解，達到提高處理效率及降低操作成本的目標。本實驗條件下，當染料初濃 度為100 mg/L時，單獨添加40 g/L之MnO2處理Acid Black 24染料濃度去除率皆大於80%，TOC去除率 分別可達55%；pH=2時去除效果最佳，染料濃度與TOC去除率皆大於95%。由實驗結果得知MnO2具 有高脫色效率達80%以上，也可進一步降解TOC。此外，O3亦可明顯增加染料脫色效率，單純以O3 處理即可去除40%的染料濃度，但僅有5%之有機物礦化效率，MnO2+O3可將染料濃度去除率提升至 90%，TOC去除率為40~50%。若以達到相同去除效率比較，結合系統可明顯減少反應時間，且幾乎 可達完全脫色。因此可知結合系統能迅速有效脫色，並節省反應時間及能源消耗，提升礦化處理效 率，證實為一種可行之整合處理程序。

The synthesized dye compounds are very stable and refractory to physical-chemical conditions. Thus, the effluents from dyeing industries were characterized to be in high color, COD and difficult to be treated. To solve this problem, we propose to use MnO2 combine with ozonation to decolorize and mineralize organic pollutants. The basic experiments about MnO2 and ozonation were performed to obtain suitable operating conditions such as reaction time, MnO2 dosage, dye concentration, and pH, for decolorization of azo dye, acid black 24. Consequently, MnO2 was then introduced into ozonation process to enhance the treatment efficiency and reduce operation cost. Under designed conditions, with 40 g/L MnO2 dosage and initial acid black 24 concentration of 100 mg/L the removal efficiency of more than 80% and 55% can be reached for dye and TOC, respectively. At pH 2, the best TOC removal efficiency of 95% can be obtained. Ozonation alone can remove 40% of dye and only 5% of TOC. By combining both MnO2 and ozonation, the dye and TOC removal efficiencies can be promoted to 90 and 40-50% for various conditions. The combination process of MnO2 and ozonation not only reduce the reaction time, but also completely decolorize the acid black 24. Thus, the proposed MnO2/O3 combination system is proved to be a feasible treatment technology of azo dye wastewater and can enhance the mineralization efficiency.