厌氧铁氨氧化对污水脱氮的研究进展

Research Progress in Sewage Nitrogen Removal by Anaerobic Ferritin Oxidation

厌氧铁氨氧化(Feammox)是近年来新兴的氮循环途径,备受人们关注。在富铁和厌氧的条件下,基于电子传递机理,使微生物以Fe^(3+)为受体在将NH4+氧化成N_(2)、NO_(2-)、NO_(3-)等物质的同时,减少次级反应的发生,与此同时Fe^(3+)转化为Fe^(2+)。在实现的铁转化同时,减少次级反应产物对大环境的影响。铁氨氧化脱氮工艺针对处理“高氨氮、低COD”废水,对城市生活污水的处理具有应用前景。对铁氨氧化脱氮的反应机理、影响铁氨氧化脱氮反应的因素进行分析总结,阐述了厌氧铁氨氧化应用于处理实际污水存在的问题,并对未来将铁氨氧化技术运用于实际应用进行了展望。

Anaerobic ferridine oxidation(Feammox) is a new nitrogen cycle pathway in recent years, which has attracted much attention. Under iron-rich and anaerobic conditions, based on the electron transport mechanism, microorganisms use Fe^(3+)as the receptor for oxidation of NH_(4)^(+)to N_(2), NO_(2-)and NO_(3-), while the Fe^(3+)can be transformed to Fe^(2+).With the iron conversion, the impact of the secondary reaction products on the overall environment is reduced. Ferric ammonia oxidation and nitrogen removal process can treat "high ammonia nitrogen, low COD" wastewater, and has application prospect for the treatment of urban domestic wastewater. In this paper, the reaction mechanism and factors affecting ferric oxidation and denitrification were summarized, the application of anaerobic ferric oxidation in the treatment of practical sewage was expounded, and its prospect was discussed.