稀土铈阳极电芬顿技术提高焦化废水可生化性研究  

Study on strengthening the biodegradability of coking wastewater by rare earth Ce anode electro Fenton technology

作　　者：敬双怡[1] 范保建 于玲红[1] 李卫平[1] 杨文焕[1] 殷震育[1] 孙岩柏[1] JING Shuang-yi;FAN Bao-jian;YU Ling-hong;LI Wei-ping;YANG Wen-huan;YIN Zhen-yu;SUN Yan-bai(School of Energy and Environment of Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学能源与环境学院,内蒙古包头014010

出　　处：《应用化工》2020年第11期2774-2778,2783,共6页Applied Chemical Industry

基　　金：内蒙古自然科学基金(2018LH04003);包头科技计划重点领域技术攻关项目(2017Z1009-1)。

摘　　要：以Ti/RuO2-ZrO2-Ce金属氧化物涂层电极为阳极,泡沫铜作为阴极,利用电芬顿技术预处理焦化废水。通过紫外-可见光谱、傅里叶红外光谱、三维荧光光谱对处理水样进行分析,探究焦化废水中难降解大分子有机物的去除规律。结果表明,反应时间为180 min时,TOC、总氮去除率分别达到62.14%,70.82%;焦化废水中芳香族化合物紫外吸收峰明显下降,部分特征吸收峰消失;C=C骨架和O—H红外吸收峰均大幅减弱;类富里酸和芳香族蛋白类荧光峰消失,其他荧光峰大幅减弱;B/C值由0.08提高到0.31,表明焦化废水达到可生物降解水平。表明电芬顿技术可以有效去除焦化废水中难降解大分子有机物,提高其生化性,可以作为焦化废水的预处理技术。The coking wastewater has been pretreated by electric Fenton technology,the Ti/RuO 2-ZrO 2-Ce metal oxide coated electrode was applied as anode and foam copper was applied as cathode.The removal rule of macromolecular organic compounds in coking wastewater was explored with the help of the analytical results from UV-Vis spectrum,FTIR and 3D fluorescence spectrum.The results showed that the removal rates of TOC and TN were 62.14%and 70.82%respectively when the reaction time was 180 min.The UV absorption peaks of aromatic compounds in coking wastewater decreased obviously,and some characteristic absorption peaks also have disappeared.The infrared absorption peaks of C=C and O—H have decreased,fluorescence peaks of fulvic acid and aromatic protein have disappeared,and other fluorescence peaks also have decreased significantly.The data of B/C increased from 0.08 to 0.31 which indicated that the coking wastewater could be biodegraded.This study showed that the electric Fenton technology could by apply for the elimination of the refractory macromolecular organics in coking wastewater and amelioration of its biochemical properties.This technology can be used as the pretreatment technology of coking wastewater.

关 键 词：泡沫铜 电芬顿 焦化废水 溶解性有机物 可生化性 

分 类 号：TQ035[化学工程]