Mn强化Fe/C微电解工艺条件优化及降解油墨废水机理  

Optimization of process conditions for Mn enhanced Fe/C microelectrolysis and degradation mechanism of ink wastewater

作　　者：贾艳萍[1] 丁雪 刚健 佟泽为 张海丰[1] 张兰河[1] JIA Yanping;DING Xue;GANG Jian;TONG Zewei;ZHANG Haifeng;ZHANG Lanhe(School of Chemical Engineering,Northeast Electric Power University,Jilin 132012,Jilin,China;School of Energy and Power Engineering,Changchun Institute of Technology,Changchun 130012,Jilin,China)

机构地区：[1]东北电力大学化学工程学院,吉林省吉林市132012 [2]长春工程学院能源动力工程学院,吉林省长春市130012

出　　处：《化工学报》2022年第5期2183-2193,共11页CIESC Journal

基　　金：国家自然科学基金项目(51678119,52070035);吉林省科技发展计划项目(20180201016SF)。

摘　　要：为了提高Fe/C微电解工艺对油墨废水的处理效率,以金属锰改变传统铁碳填料的成分,采用响应面法优化微电解工艺条件,通过三维荧光光谱、紫外可见光谱、气-质联用色谱等分析处理前后油墨废水的有机物成分及填料表面结构的变化,探究絮凝和降解机理。结果表明:在初始pH为2.79,反应时间为1.58 h,Fe/Mn质量比为3.11,填料总投加量为93.36 g/L的条件下,COD去除率达到87.9%,预测值(87.8%)与实测值相差0.1%,采用响应面法可准确预测COD去除率的变化。经Fe/Mn/C微电解工艺处理后,油墨废水Zeta电位上升,絮凝作用增强。Fe/Mn/C微电解工艺可破坏苯环及共轭双键结构,对类溶解性微生物代谢产物、类芳香族蛋白质类物质以及类腐殖酸类物质的降解效果显著,微电解过程中填料表面生成了铁、锰氧化物,部分氧化物附着在活性炭表面。In order to improve the treatment efficiency of ink wastewater using Fe/C microelectrolysis process,the compositions of conventional Fe/C fillers were changed by using metallic manganese,and the process conditions of microelectrolysis was optimized by using response surface methodology.The changes of organic matters in the wastewater and surface structure of the filler before and after the treatment of ink wastewater were analyzed by using three-dimensional fluorescence spectra,UV-Vis spectra and GC-MS,respectively.The flocculation and degradation mechanisms of ink wastewater were explored.The results showed that under the conditions of initial pH 2.79,reaction time of 1.58 h,Fe/Mn molar ratio of 3.11 and the filler dosage of 93.36 g/L,removal efficiency of COD reached 87.9%.The difference between the predicted value(87.8%)and the measured value was 0.1%.The response surface methodology could accurately predict the changes of the removal efficiency of COD.After being treated by Fe/Mn/C micro-electrolysis process,the Zeta potential of ink waste water increases,and the flocculation effect is enhanced.Fe/Mn/C microelectrolysis process could destroy the structure of benzene ring and conjugated double bonds,and it could efficiently degrade soluble microbial metabolites,aromatic protein substances and humic acids.During the microelectrolysis process,iron and manganese oxides were formed on the surface of the filler and some of the oxides adhered to the surface of the activated carbon.

关 键 词：Fe/Mn/C 微电解 响应面 优化 油墨废水 降解机理 

分 类 号：X523[环境科学与工程—环境工程]