三维电极-电Fenton耦合法处理乳化含油废水  

Experimental study on three-dimensional electrode-electrode-Fenton coupling for emulsified oily wastewater treatment

作　　者：张华[1,2] 户传龙 吴迪 杨文新 薛佳 张文艺 ZHANG Hua;HU Chuanong;WU Di;YANG Wenxin;XUE Jia;ZHANG Wenyi(School of Environmental Science and Engineering,Changzhou University,Changzhou 213164,China;Jiangsu Longhuan Environmental Technology Co.,Ltd.,Changzhou 213100,China;Jiangsu Green Sage Resource Recycling Co.,Ltd.,Changzhou 213164,China)

机构地区：[1]常州大学环境科学与工程学院,江苏常州213164 [2]江苏龙环环境科技有限公司,江苏常州213100 [3]江苏绿赛格再生资源利用有限公司,江苏常州213164

出　　处：《工业水处理》2025年第2期118-125,共8页Industrial Water Treatment

基　　金：常州市科技支撑计划项目(CE20235017,CF20240031);中国石油-常州大学创新联合体资助项目(2021DQ06)。

摘　　要：机加工产生的乳化含油废水中有机物成分复杂,可生化性差,采用纳米零价铁、活性炭及玻璃珠混合颗粒作为粒子电极,构建三维电极-电Fenton耦合工艺体系对其进行处理。考察阴极板材料、粒子电极投加比、电压、pH、极板间距、曝气量等因素对乳化含油废水总油、COD去除效果的影响。结果表明,pH、极板间距、曝气量、电压是主要影响因子,影响程度排序为pH>极板间距>曝气量>电压。采用三维电极-电Fenton体系处理COD 1030 mg/L、总油质量浓度约为150 mg/L的乳化含油废水,在电压为25 V,活性炭、纳米零价铁、玻璃珠投加量分别为60、20、20 g/L,pH=3,极板间距6 cm,曝气量为1.0 L/min,电解液Na_(2)SO_(4)质量浓度4 g/L条件下污染物去除效果较佳,COD和总油去除率最高分别可达89.95%和93.97%。GC-MS图谱分析表明,三维电极-电Fenton耦合工艺可将乳化含油废水中的长链、短链石油烃等氧化、破链、分解成为分子较小的有机物,甚至矿化为二氧化碳和水。技术经济分析表明,该工艺具有一定的成本优势,有推广应用前景。The emulsified oily wastewater generated from machining processes has complex organic components and poor biodegradability.Nanoscale zero-valent iron,activated carbon,and glass beaded mixed particles were used as particle electrodes to construct a three-dimensional electrode-electro-Fenton coupling system to effectively treat the wastewater.The effects of cathode plate material,particle electrode ratio,voltage,pH,electrode spacing,aera-tion rate,and other factors on the removal efficiencies of total oil and COD in emulsified oily wastewater were re-searched.The results showed that pH,electrode spacing,aeration rate,and voltage were the main effect factors,with the order of pH>electrode spacing>aeration rate>voltage.The three-dimensional electrode-electro-Fenton system was used to treat emulsified oily wastewater with COD of 1030 mg/L and total oil of about 150 mg/L.Under the con-ditions of voltage of 25 V,activated carbon,nanoscale zero-valent iron,and glass bead dosages of 60,20,and 20 g/L,pH=3,electrode plate spacing of 6 cm,aeration rate of 1.0 L/min,and electrolyte Na_(2)SO_(4) concentration of 4 g/L,the pollutant removal effect was optimal,with COD and total oil removal rates reaching up to 89.95%and 93.97%,re-spectively.GC-MS analysis showed that the three-dimensional electrode-electro-Fenton system could oxidize,break,and decompose long-chain and short-chain petroleum hydrocarbons in emulsified oily wastewater into smaller organic compounds,and they were even mineralized into carbon dioxide and water.Technical and economic analysis showed that this process had certain cost advantages and had prospects for promotion and application.

关 键 词：三维电极 电FENTON 含油废水 粒子电极 

分 类 号：X703.1[环境科学与工程—环境工程]