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摘要
厌氧氨氧化技术利用NO2--N氧化NH4+-N来实现污水中氮素的高效去除,其中NO2--N的产生是实现厌氧氨氧化应用的难点,而短程硝化是获取NO2--N的重要途径之一。针对目前在实际工程中通过短程硝化难以实现长期稳定的亚硝酸盐累积的问题,介绍了厌氧氨氧化、短程反硝化工艺影响因素及工程应用的研究进展;分析了短程反硝化工艺累积NO2--N的过程,从而去除污水中的氮素污染物。对短程反硝化与厌氧氨氧化工艺耦合方式在处理实际废水时的可行性与应用前景进行展望。
Abstract
Anaerobic ammonia oxidation technology (ANAMMOX) utilizes NO2--N to oxidize NH4+-N to realize the efficient removal of nitrogen-containing substances in sewage,in which the generation of NO2-N is the difficulty to realize the application of ANAMMOX.Shortcut nitrification is one of the important ways to generate NO2--N.Aiming at the problem that it is difficult to achieve long-term stable nitrite accumulation through shortcut nitrification in practical engineering,the affecting factors to anaerobic amine oxidation and short-range denitrification processes,and research advances in the industrial application of the processes are introduced.The accumulation of NO2--N during short-range denitrification process and thereby removing nitrogen-containing contaminants in sewage is analyzed.The feasibility and application prospects of coupling short-range denitrification with anaerobic ammonia oxidation process in treatment of actual wastewater are predicted.
关键词
生物脱氮
/
短程反硝化
/
亚硝酸盐累积
/
厌氧氨氧化
Key words
biological denitrification
/
short-range denitrification
/
nitrites accumulation
/
anaerobic ammonia oxidation
生物脱氮新工艺研究进展[J].
, 2022, 42(4): 53-57 DOI:10.16606/j.cnki.issn0253-4320.2022.04.011