Fe_(2)O_(3)/Al_(2)O_(3)修饰的混合金属氧化物降解维C生化废水  

Degradation of vitamin C biochemical wastewater by Fe_(2)O_(3)/Al_(2)O_(3) modified mixed metal oxides

作　　者：韩永辉 王艳魁 刘姿伶 岳琳[1] 何淑妍 邱珊[3] HAN Yonghui;WANG Yankui;LIU Ziling;YUE Lin;HE Shuyan;QIU Shan(Cllege of Environmental Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;Hebei Bilan Environmental Protection Engineering Co.,Ltd.,Shijiazhuang 050041,China;College of Municipal Environmental Engineering,Harbin Institute of Technology,Harbin 150006,China)

机构地区：[1]河北科技大学环境科学与工程学院,河北石家庄050018 [2]河北碧蓝环保工程有限公司,河北石家庄050041 [3]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150006

出　　处：《应用化工》2024年第6期1347-1351,共5页Applied Chemical Industry

基　　金：河北省省级科技计划项目(20373602D);石家庄市科学技术研究与发展计划项目(211240173A)。

摘　　要：针对维C废水在二级生化处理后很难达到排放标准的问题,以铁铝混合粉末作为载体(Fe_(2)O_(3)/Al_(2)O_(3),FA)与其他金属氧化物粉末混合掺杂,通过滚动造粒法制备混合金属氧化物(MMO)臭氧催化剂,用于降解维C生化废水。结果表明,CuO、Ni_(2)O_(3)协同催化,所制备的MMO臭氧催化剂Cu-Ni/FA具有较好的催化性能和力学性能。通过SEM、TEM、BET、XRD、XPS对样品的理化性能进行表征,发现催化体系中NiFe_(2)O_(3)和Cu_(4)O_(3)发挥了重要作用。在废水COD浓度为248.31 mg/L,pH为7,催化剂投加量35 g/L以及臭氧浓度10 mg/L条件下,60 min时COD去除效率达到70%。超声120 min后催化剂脱落率为2.724%,对每次超声后的催化剂进行催化臭氧氧化实验,COD去除率为65%~69%,表明该催化剂具有良好的抗脱落性和稳定性。To address the problem that vitamin C wastewater is difficult to meet the discharge standard after secondary biochemical treatment.The mixed metal oxide(MMO)ozone catalysts were prepared for the degradation of vitamin C biochemical wastewater by using mixed iron and aluminum powders as the carriers(Fe_(2)O_(3)/Al_(2)O_(3),FA)doped and mixed with other metal oxide powders by the rolling granulation method.The results showed that the MMO ozone catalyst Cu-Ni/FA prepared by the synergistic catalysis of CuO and Ni_(2)O_(3) had better catalytic and mechanical properties.The physicochemical properties of the samples were characterized by SEM,TEM,BET,XRD,and XPS,and it was found that NiFe_(2)O_(3) and Cu_(4)O_(3) played an important role in the catalytic system.Under the conditions of wastewater COD concentration of 248.31 mg/L,pH 7,catalyst addition of 35 g/L,and ozone dosage of 10 mg/L,the COD removal efficiency reached 70%at 60 min.The catalyst shedding rate was 2.724%after 120 min of ultrasonication,and the catalytic ozone oxidation experiments were carried out on the catalyst after each ultrasonication.The COD removal rate was 65%~69%,which indicated that the catalyst had good anti-shedding properties and stability.

关 键 词：金属氧化物 混合掺杂 臭氧催化氧化 维C生化废水 

分 类 号：TQ426[化学工程] X703[环境科学与工程—环境工程]