三维电极电Fenton深度处理煤化工废水  

Advanced treatment of coal chemical wastewater by three-dimensional electrode electro-Fenton process

作　　者：景立明 艾爽 高树仁 刘爽 赵萌 张安龙 JING Liming;AI Shuang;GAO Shuren;LIU Shuang;ZHAO Meng;ZHANG Anlong(School of Environmental Science and Engineering,Shaanxi University of Science&Technology,Xi’an 710021,China;China Light Industry Pollution Control Engineering Technology Research Center,Xi’an 710021,China;Shaanxi Yanchang-Zhongmei Yulin Energy and Chemical Co.,Ltd.,Jingbian 718500,China)

机构地区：[1]陕西科技大学环境科学与工程学院,陕西西安710021 [2]中国轻工业水污染控制工程技术研究中心,陕西西安710021 [3]陕西延长中煤榆林能源化工股份有限公司,陕西靖边718500

出　　处：《应用化工》2025年第2期398-403,共6页Applied Chemical Industry

基　　金：陕西省重点研发计划项目(2020SF-406)。

摘　　要：构建以石墨为阴极,钌铱涂层钛电极为阳极,铁碳微粒为粒子电极的三维电Fenton体系对煤化工废水生化出水进行深度处理,探究pH、电流密度、极板间距、粒子加入量对处理效果的影响并进行正交实验优化。结果表明,在电流密度20 mA/cm^(2),极板间距1 cm,粒子加入量为40 g/L,pH 3的条件下,煤化工废水生化出水经三维电极电Fenton体系处理45 min后COD由148.32 mg/L降低至44.49 mg/L,响应面曲线模型模拟出的最佳COD去除率为70.01%,在固定极板间距的前提下,各因素对三维电极电Fenton体系去除COD效果影响程度pH>电流密度>粒子加入量。红外光谱和三维荧光光谱分析表明三维电Fenton对废水中酚类及腐殖酸类物质有较好的去除效果。Three-dimensional electro-Fenton system with ruthenium iridium-coated titanium-graphite-iron-carbon particles as electrodes was applied to degraded organic pollutants in biochemical treatment effluent from coal chemical company.Both the influencing factors and mechanism were investigated.The effects of various operating factors including pH,current density,electrode plates spacing,and particle dosage were systematically investigated in order to obtain the optimized conditions under three levels orthogonal test of four factors.The optimum values were as follows:current density 20 mA/cm^(2),electrode plates spacing 1 cm,particles dosage 40 g/L,initial pH=3,after reaction time of 45 min,the removal rate of COD could reach to 70.01%under the optimum conditions with COD concentration reduced to 44.49 mg/L from 148.32 mg/L.The results demonstrated that the significance of influence factors followed the order:pH>current density>particle dosage.Under the condition of fixed electrodes spacing,results from infrared spectroscopy and three-dimensional excitation-emission matrix(EEM)fluorescence spectroscopy analysis proved that pollutants such as phenolics and humic-like substance in biochemical treatment effluent could get better removal by three-dimensional electro-Fenton process.

关 键 词：煤化工废水 三维电极 电FENTON 深度处理 

分 类 号：TQ09[化学工程] X703[环境科学与工程—环境工程]