电絮凝-催化氧化联合处理酱油废水  

Treatment of sauce wastewater by electro-coagulation and catalytic oxidation

作　　者：杨天天 刘梅[1] 周颖 李雨贝 杨文静 顾亚红 朱鹏飞[1,2] YANG Tian-tian;LIU Mei;ZHOU Ying;LI Yu-bei;YANG Wen-jing;GU Ya-hong;ZHU Peng-fei(College of Chemistry&Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China;Sichuan Provincial Key Laboratory of Oil&Gas Field Applied Chemistry,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]西南石油大学油气田应用化学四川省重点实验室,四川成都610500

出　　处：《现代化工》2019年第11期132-136,共5页Modern Chemical Industry

基　　金：西南石油大学2016年“青年实验技术人员”过关计划项目;国家级大学生创新创业训练计划项目(201710615014)

摘　　要：通过溶胶-凝胶法制备了Cu-Fe-TiO2/凹凸棒催化剂,并用FT-IR、XRD和SEM技术对其结构进行表征。采用电絮凝-催化氧化联合工艺对酱油废水进行处理,通过单因素法优化了各反应条件。结果表明,催化剂主要呈棒状或块状结构,TiO2主要分布在凹凸棒表面或层间,部分Cu、Fe掺入了TiO2晶格,Cu-Fe-TiO2/凹凸棒催化剂复合成功。在电压为25 V、pH为8、反应时间为30 min的情况下进行电絮凝后,调节废水pH为2左右,加入5 m L 0.05 mol/L的K2S2O8,与1 g/L自制的催化剂进行催化氧化处理,出水与原废水相比,脱色率达99.8%,COD去除率达69.5%,处理效果较好。Cu-Fe-TiO2/attapulgite catalyst is prepared by sol-gel method,and its structure is characterized through FT-IR,XRD and SEM. The catalyst is used in the treatment of sauce wastewater by electrocoagulation combined with catalytic oxidation,and the reaction conditions are optimized by using single factor experiment.The results show that the catalyst shows mainly rod-like or block-like structure,with TiO2 distributing on the surface or in the interlayers of the attapulgite.Part of Cu and Fe is doped into the lattice of TiO2,suggesting that Cu-Fe-TiO2/attapulgite catalyst is composited successfully.Sauce wastewater is pretreated by electrocoagulation under an electrolytic voltage of 25 V and pH8 for 30 min,and then treated by using catalytic oxidation under the conditions as follows: pH is around 2,5 m L of 0.05 mol·L-1 K2 S2 O8 is added,and 1 g·L^-1 of self-made catalyst is used. The decolorization rate and COD remove rate of effluent water reach 99.8% and 69.5%,respectively.

关 键 词：电絮凝 催化氧化 酱油废水 联合工艺 

分 类 号：X703.1[环境科学与工程—环境工程]