摘要
针对高盐高COD电镀废水,开发了碳基、硅基Fenton催化剂,通过扫描电镜、比表面积及孔径分析仪、热重仪、X射线光电子能谱仪、X射线衍射仪、傅里叶变换红外光谱仪等对Fenton催化剂进行了形貌、孔径及结构的表征,考察了pH、反应时间、废水电导率对碳基、硅基Fenton催化剂处理模拟电镀废水效果的影响,最后考察了碳基、硅基Fenton催化剂处理实际电镀废水的效果。实验结果表明,碳基催化剂表面有许多不规则的片块结构,具有较大的比表面积,硅基材料有许多不规则的层状堆叠和明显的孔结构,具有较大的孔径和较高热稳定性。碳基催化剂和硅基催化剂中铁锰以氧化物的形式与碳基和硅基相结合,适用pH广泛,在pH为2~9时,COD去除率保持较高水平。对于不同含盐量的电镀废水,碳基催化剂和硅基催化剂展现出不同的催化性能和稳定性,在处理高电导率和复杂水质的电镀废水时,硅基催化剂表现更优;而在处理低电导率废水时,碳基催化剂效果更好。
For high-salt and high-COD electroplating wastewater,carbon-based and silicon-based Fenton catalysts were developed.The morphology,pore size and structure of the Fenton catalysts were characterized by scanning electron microscope,specific surface area and pore size analyzer,thermogravimetric analysis,X-ray photoelectron spectroscopy,X-ray diffraction and Fourier transform infrared spectroscopy.The effects of pH,reaction time and wastewater conductivity on the treatment of simulated electroplating wastewater by carbon-based and silicon-based Fenton catalysts were investigated.Finally,the treatment effects of carbon-based and silicon-based Fenton catalysts on actual electroplating wastewater were evaluated.The results showed that the surface of the carbon-based catalyst had many irregular flake structures with high specific surface area,while the silicon-based material had many irregular block structures and obvious pore structures,with large pore size and high thermal stability.Iron and manganese in the carbonbased and silicon-based catalysts were combined with the carbon and silicon in the form of oxides.The catalysts demonstrated a broad applicable pH range with high COD removal efficiency at pH 2-9.For electroplating wastewater with different salt contents,the carbon-based and silicon-based catalysts exhibited different catalytic performance and stability.The silicon-based catalyst performed better in treating electroplating wastewater with high conductivity and complex water quality,while the carbon-based catalyst was more effective in treating wastewater with low conductivity.
作者
张长平
杨梦康
刘方骏
艾廷阳
王晓欧
ZHANG Changping;YANG Mengkang;LIU Fangjun;AI Tingyang;WANG Xiao’ou(School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 300401,China)
出处
《工业水处理》
北大核心
2025年第7期170-176,共7页
Industrial Water Treatment
