中文摘要：

以SnO2为催化剂，研究糖蜜酒精废水在臭氧条件下的氧化降解反应，为糖蜜酒精废水的治理提供一种新的处理方法。研究表明，SnO2加速了臭氧氧化反应，使糖蜜酒精废水的氧化降解加快。影响糖蜜酒精废水氧化降解的主要因素有臭氧流量、废水的初始pH和催化剂用量等。加大臭氧流量及增加催化剂用量，均有利于糖蜜酒精废水的降解。适宜的反应条件是：糖蜜酒精废水的稀释倍数为10倍，臭氧流量为130mg／h，催化剂用量为2．500g／L，废水的初始pH为4．25，温度为30℃。在该条件下反应60min，废水的脱色率为60．2％，COD去除率为44．5％。动力学分析表明，单独臭氧氧化降解糖蜜酒精废水和SnO2催化臭氧氧化降解糖蜜酒精废水均为拟一级反应。

英文摘要：

Series of experiments were performed to determine the effects of reaction temperature, pH, flow rate of ozone enriched air, catalyst dose, and the presence of tert-butyl alcohol on the performance of SnO2 catalyzed ozonation in treating wastewater of molasses fermentation, to study the kinetics of the decolorization with and without the catalyst, and to propose a reaction mechanism for the catalytic oxidation process. SnO2 enhanced both decolorization and COD reduction of the ozone treatment. The treatment performance improved with increasing O3 input and/or catalyst dose; and it was best when the ozonation was conducted at pH of 4.25. The reaction temperature was a minor factor on the decolorization rate within 22-60℃. After 60 min of treatment at the optimal conditions （10 times wastewater dilution, the O3 input=130 mg/h, catalyst dose=2. 500 g/L, pH=4.25 and 30 ℃ ）, the color intensity of the diluted wastewater was reduced by 60.2% and COD by 44.5%. The decolorizaiton profiles of ozonation with and without the catalyst were consistent with the first-order kinetic model. The incremental availability of the highly reactive · OH radicals due to reactions of · O^2- ,· O^3- adsorbed on SnO2 presumably enhanced the ozonation effectiveness. The hypothesis was supported by the reduced decolorization rate observed when the · OH consuming tertbutyl alcohol was also present.