铁氨氧化研究进展及在污水脱氮中的应用探索  

Research progress of Feammox and its application in wastewater denitrification

作　　者：胡凯耀 王亚娥[1] 李杰[1,2,3] 慕浩 任爽 朱红娟 易宏学 王倩 HU Kaiyao;WANG Yae;LI Jie;MU Hao;REN Shuang;ZHU Hongjuan;YI Hongxue;WANG Qian(School of Environment and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou,730070,China;Gansu membrane science and Technology Research Institute Co.,Ltd,Lanzhou,730020,China;Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province,Lanzhou,730020,China)

机构地区：[1]兰州交通大学环境与市政工程学院,兰州730070 [2]甘肃省膜科学技术研究院有限公司,兰州730020 [3]甘肃省非常规水资源化利用技术重点实验室,兰州730020

出　　处：《环境化学》2023年第1期264-276,共13页Environmental Chemistry

基　　金：国家自然科学基金(51768032)资助。

摘　　要：近几年来,铁氨氧化(Feammox)反应在不同的环境体系中相继被发现.Feammox反应是在厌氧环境中以及微生物的驱使作用下,NH_(4)^(+)和Fe(Ⅲ)分别作为电子供体和电子受体,Fe(Ⅲ)被还原生成为Fe(Ⅱ),而NH_(4)^(+)则转化生成为亚硝酸盐(NO2−)、硝酸盐(NO_(3)−)和氮气(N2)几种不同形态的氮素.Feammox的发现进一步揭示了氮素在自然界循环中的新的转化途径,这种新的氮素转换途径给污水领域中的脱氮技术方法带来了全新视角.另外,Feammox能够和厌氧氨氧化(Anammox)和铁型反硝化(NDFO)耦合或者通过实现Fe(Ⅲ)和Fe(Ⅱ)之间的循环转化进行脱氮,使得Feammox成为了一种潜在的新型脱氮技术.通过综述Feammox的发展历程、反应机制、以及对自然界生态系统所产生的的影响和其所受影响的物理性因素,最后,进一步探讨Feammox在污水脱氮中的应用,并对其未来发展进行总结和展望.The Feammox reaction has been discovered in different environmental systems in recent years.The Feammox reaction occurs in an anaerobic environment and under the action of microorganisms.During the reaction,ammonia and Fe(Ⅲ)act as electron donors and electron acceptors respectively,Fe(Ⅲ)is reduced to Fe(Ⅱ),while ammonia is converted Nitrogen is produced in the form of nitrite(NO2−),nitrate(NO_(3)−)and nitrogen(N2).The discovery of Feammox further reveals a new conversion pathway of nitrogen in the natural cycle,and this new conversion pathway of nitrogen brings a new perspective to the technology of denitrification in the sewage field.This process can also be coupled with Anammox and Iron Type Denitrification(NDFO)or through the cyclic conversion between Fe(Ⅲ)and Fe(Ⅱ)for nitrogen removal,which makes Feammox a potential Nitrogen removal technology.the article summarizes the development process and reaction mechanism of Feammox,as well as the impact on the natural ecosystem and the physical factors affected,and finally discusses its application and future development in wastewater denitrification.

关 键 词：铁氨氧化 氮素循环 脱氮技术 厌氧氨氧化. 

分 类 号：X703[环境科学与工程—环境工程]