磁性材料强化厌氧工艺处理有机废水的研究进展

Research progress of magnetic material enhanced anaerobic process for organic wastewater treatment

近年来,直接种间电子传递被发现是厌氧工艺重要的电子传递途径。并且,添加磁性材料更有利于驱动此种电子传递方式。因此,本文通过国内外文献调研,将磁性材料分为单一磁性材料和复合磁性材料,分别介绍了零价铁、金属氧化物(FeO、Fe_(2)O_(3)、Fe_(3)O_(4))以及磁性炭材料强化厌氧工艺在废水处理中的应用效果(对废水降解率、甲烷产量、挥发性脂肪酸、胞外聚合物、酶的活性等有积极作用)和影响因素(温度、pH、污染物浓度、磁性材料尺寸以及投加量等),分析了不同磁性材料诱导直接种间电子传递的机理和目前存在的不足,着重强调了磁性炭材料的技术优势,提出磁性炭材料诱导直接种间电子传递的研究方向,并指明构建厌氧微生物导电体系是其未来发展的重要方向。

In recent years,direct interspecific electron transport has been found to be an important electron transport pathway in anaerobic processes.Moreover,the addition of magnetic materials makes it easier to drive such electron transfer.Therefore,in this paper,based on literature research at home and abroad,magnetic materials are divided into single magnetic materials and composite magnetic materials.The application of the zero-valent iron,metal oxides(FeO,Fe_(2)O_(3),Fe_(3)O_(4))and magnetic carbon materials enhanced anaerobic technology in waste water treatment,which has a positive role in wastewater degradation rate,methane yield,volatile fatty acid,extracellular polymers,enzyme activity,etc.,and the influence factors(temperature,pH,concentration of pollutants,the size of the magnetic material and additive quantity,etc.)are introduced.The mechanism and the existing deficiency in different magnetic material induced direct interspecific electron transfer are analyzed,and the technical advantages of magnetic carbon materials are emphasized.The research direction of direct interspecific electron transfer induced by magnetic carbon materials is put forward,and the construction of anaerobic microbial conductive system is the important direction of its future development.