催化湿式氧化吡虫啉农药废水催化剂的研究  

Study on a catalyst for catalytic wet air oxidation of pesticide wastewater from imidacloprid production

作　　者：赵彬侠[1] 刘林学[1] 李红亚[1] 白伟利[1] 张小里[1] 金奇庭[2] 

机构地区：[1]西北大学化工学院,西安710069 [2]西安建筑科技大学环境与市政工程学院,西安710055

出　　处：《环境工程学报》2008年第3期340-343,共4页Chinese Journal of Environmental Engineering

基　　金：陕西省教育厅专项科研计划项目(04JK235);陕西省自然科学基金资助项目(2004B28)

摘　　要：通过共沉淀法制备了用于湿式氧化吡虫啉农药废水的Cu/Mn复合氧化物催化剂,研究了沉淀剂种类、沉淀温度、焙烧温度和活性组分配比等因素等对Cu/Mn复合氧化物催化剂的活性及稳定性的影响,确定了最佳制备条件,利用BET比表面积测定和XRD对催化剂进行了表征。结果表明,优化条件制备的Cu/Mn复合氧化物催化剂催化湿式氧化处理吡虫啉农药废水时,具有较高的催化活性和稳定性。催化剂用量4 g/L,反应温度190℃,氧分压1.6 MPa,反应120 min,COD去除率为92.3%,活性组分溶出量较小。A kind of catalyst Cu/Mn was prepared with the co-precipitation method, and applied to the treatment of pesticide wastewater from imidacloprid production by catalytic wet air oxidation. The influences of the precipitator types, the precipitation temperature, the roasting temperature and content of Cu/Mn on the activity and stability of the Cu/Mn catalyst were investigated, and the best preparation condition has been determined. The catalyst was characterized by means of BET specific surface area measurement and XRD. The experimental results indicated that the Cu/Mn catalyst was applied in the treatment of imidacloprid wastewater resulted in 93.2% COD removal at Cu/Mn catalyst loading of 4 g/L , temperature of 190℃ , partial pressure of oxygen of 1.6 MPa and reaction time of 120 rain. The concentration of leached Mn and Ce of catalyst prepared under optimal preparation condition was lower.

关 键 词：催化湿式氧化 农药废水 共沉淀法 制备条件 催化剂 

分 类 号：X703[环境科学与工程—环境工程]