由于低温严重抑制微生物的数量和活性,冬季的氨氮废水处理效率下降严重,达标存在很大的困难。针对上述问题,归纳了在低温条件下(≤15℃)氨氮废水去除的可选技术方法和改进工艺,包括生物脱氮改进技术、物化脱氮技术和高级氧化脱氮技术;指出了氨氮的高效经济处理以及资源化回收利用是今后低温环境下氨氮废水处理的主要发展方向。

In practical applications,as low temperature seriously inhibits the number and activity of microorganisms,the treatment efficiency of ammoniacal nitrogen wastewater decreases seriously in winter,leading to great difficulty in meeting the effluent standard.To address this issue,the optional technical methods and improved processes suitable for the removal of ammoniacal nitrogen from wastewater at low temperature conditions (≤1℃) are summarized,including the improved biological denitrification technologies,physicochemical denitrification technologies and advanced oxidation denitrification technologies.It is pointed out that the efficient and economical treatment as well as resource recovery of ammoniacal nitrogen will be the main development directions for ammoniacal nitrogen wastewater treatment at low temperature in the future.

郭阳(1996-),男,硕士生;李厚芬(1985-),女,博士,副教授,研究方向为新型功能材料的设计和制备以及化学催化法去除水中碳、氮,通讯联系人,lihoufen@tyut.edu.cn。