多组分复合催化剂对臭氧氧化生化尾水的催化作用  

Catalytic effects of compound catalyst on biochemical tailwater ozonation

作　　者：周洁[1] 徐军[2] 涂勇[2] 刘伟京[2] 赵贤广[1] 张耀辉[2] 

机构地区：[1]南京工业大学环境学院,江苏南京211800 [2]江苏省环境科学研究院江苏省环境工程重点实验室,江苏南京210036

出　　处：《南京工业大学学报（自然科学版）》2015年第6期119-124,共6页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07101-003);江苏省环保科研课题(2013036)

摘　　要：将陶粒浸渍于Ti（SO4）2、Fe（NO3）3和Mn（NO3）2的混合溶液中,再经高温煅烧制备多组分复合催化剂,通过对废水中亲、疏水性有机物的化学需氧量（COD）、总有机碳（TOC）、254 nm紫外吸光度（OD254）等指标的分析,考察复合催化剂对臭氧氧化处理生化尾水的强化效果。结果表明：单独臭氧氧化时,生化尾水的OD254、COD、TOC去除率分别为86%、26%、17%;而有复合催化剂存在时,生化尾水的OD254、COD、TOC去除率分别提高至47%、43%、51%,其中弱疏水性有机物的去除率最高;吸光度指标表明,复合催化剂催化臭氧氧化使得生化尾水在200~600 nm范围内的吸光度大幅度降低,说明复合催化剂催化臭氧氧化显著提高了臭氧对废水中不饱和键疏水性有机物的去除。Compound catalyst was prepared by calcined after dipping ceramsite in Ti （SO4 ）2, Fe （NO3 ）3 and Mn（ NO3 ）2 mixed solution. With compound catalyst through analysis indicators, such as chemical oxygen demand （ COD）, total organic carbon （TOC）, ultraviolet （UV） absorbance at 254 nm （ UVz54 ）, and absorbance of wastewater hydrophobic, the enhanced effects of ozonation on biochemical tailwater was investigated.Results showed that ozonation alone, UV254, COD and TOC removal rates of biochemical tailwater were 8.6%,26% and 17%. While the presence of the catalyst, the removal rates increased to 47%,43%, and 51% with the highest removal rates of the weak hydrophobic organic compounds. Absorbance indicators showed that the catalytic ozonation enabled a significant reduction of biochemical tailwater in the 200-600 nm range, indicating bond hydrophobic organics of ozone. that catalytic ozonation increased removal in unsaturated

关 键 词：复合催化剂 臭氧氧化 疏水性 生化尾水 

分 类 号：X703.1[环境科学与工程—环境工程]