碳泡沫阴极电-Fenton深度处理造纸废水研究  

Carbon Foam Cathode Electro-Fenton Process for Papermaking Wastewater Advanced Treatment

作　　者：魏亚辉[1] 肖洪涛 WEI Yahui;XIAO Hongtao(Department of Mechanical and Electronic Engineering,Zhumadian Vocational and Teachnical College,Zhumadian,He’nan Province,463000;School of Electronic and Computer Engineering,Huanghuai University,Zhumadian,He’nan Province,463000)

机构地区：[1]驻马店职业技术学院机电工程系,河南驻马店463000 [2]黄淮学院信息工程学院,河南驻马店463000

出　　处：《中国造纸》2021年第6期97-101,共5页China Pulp & Paper

基　　金：2019年度河南省高等教育教学改革研究与实践项目“基于大数据的高职教学质量内生机制研究”(课题编号:2019SJGLX793)。

摘　　要：本研究通过蔗糖发泡-碳化工艺制备了碳泡沫阴极材料并应用于电-Fenton深度处理造纸废水。采用扫描电子显微镜(SEM)、X射线光电子能谱仪(XPS)对碳泡沫阴极表面形貌和化学结构进行表征。以COD_(Cr)去除率为评价指标,考察了阴极材料、反应时间、初始pH值、Fe^(2+)投加量和电流密度对造纸废水深度处理效果的影响。结果表明,碳泡沫由大量孔洞结构堆叠而成,表面存在含氧官能团。反应时间180 min、pH值3、Fe^(2+)投加量0.5 mmol/L、电流密度200 mA/cm^(2)时,以碳泡沫为阴极的电-Fenton深度处理造纸废水的COD_(Cr)去除率最高,达到88.4%,相比常规碳毡阴极提高了1.3倍。以碳泡沫为阴极的电-Fenton深度处理造纸废水法具有良好的稳定性,10次循环的COD_(Cr)去除率均超过85%,效率降低率不超过5%。In this study,a carbon foam cathode material was prepared by sucrose foaming-carbonization process for electro-Fenton advanced treatment of papermaking wastewater.Electron scanning microscope(SEM)and X-ray photoelectron spectrometer(XPS)were used to characterize the surface morphology and chemical construction of carbon foam cathode.The influence of the type of cathode material,reaction time,initial pH value,Fe^(2+)dosage and current density on the treatment efficiency of papermaking wastewater was investigated with COD_(Cr) removal rate as the evaluation index.The results indicated that carbon foam was formed by stacking a large number of pore structures with oxygen-containing functional groups on the surface.The optimum reaction conditions of electro-Fenton method with carbon cathode was that reaction time was 180 min,initial pH value was 3,Fe^(2+)dosage was 0.5 mmol/L and current density was 200 mA/cm^(2).The COD_(Cr) removal rate could reach 88.4%under the conditions,which was 1.3 times higher than conventional carbon felt cathode.The COD_(Cr) removal rate remained 85% for 10 circles with less than 5% reduction in efficiency,indicating that the electro-Fenton method with carbon foam had good stability in the advanced treatment of papermaking wastewater.

关 键 词：造纸废水 深度处理 电-FENTON 碳泡沫 COD_(Cr)去除率 

分 类 号：X793[环境科学与工程—环境工程]