温度影响下Anammox-DAMO系统N<sub>2</sub>O产消机制及调控

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摘要以厌氧氨氧化-反硝化厌氧甲烷氧化(Anammox-DAMO)系统为研究对象,考察了不同温度对该系统性能和N₂O产消的影响,建立了该过程的酶动力学模型.结果表明,在40℃的高温胁迫下系统性能明显恶化且积累了更多的N₂O, Acidovorax和Thauera属丰度在高温条件下显著降低,而Bacillus属丰度则上升,N₂O还原酶活性的抑制是N₂O排放量增加的主要因素.酶动力学拟合结果表明35℃时可以最大程度地实现N₂O减排.

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	韩梦茹
	楼菊青
	徐帆

关键词 ：温度, Anammox-DAMO系统, N₂O, 调控策略

Abstract：The Anammox-DAMO system was used to investigate the effects of temperature on the system performance and N₂O production and consumption. The enzymatic kinetics model of the process was established. The results showed that the system performance deteriorated significantly and more N₂O was accumulated under the high temperature stress(40°C). The abundance of Acidovorax and Thauera genera decreased significantly under high temperature conditions, while the abundance of Bacillus genera increased. Inhibition of N₂O reductase activity was the main cause of the increase in N₂O emissions. The enzyme kinetics results indicated that N₂O emission reduction can be maximized at 35°C.

Key words： temperature Anammox-DAMO system N₂O regulation strategy

收稿日期: 2023-07-25

PACS:

X703

基金资助:浙江省‘尖兵’‘领雁’研发攻关计划(2023C03149);浙江工商大学“数字+”学科建设项目(SZJ2022B016);浙江省自然科学基金资助项目(LY21D030003)

作者简介: 韩梦茹(1998-),女,甘肃金昌人,浙江工商大学硕士研究生,主要研究方向为废水生物处理及资源化.540634999@qq.com.

引用本文:

韩梦茹, 楼菊青, 徐帆. 温度影响下Anammox-DAMO系统N₂O产消机制及调控[J]. 中国环境科学, 2024, 44(3): 1324-1334. HAN Meng-ru, LOU Ju-qing, XU Fan. Mechanism and regulation of N₂O production and elimination in Anammox-DAMO system under the influence of temperature. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(3): 1324-1334.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2024/V44/I3/1324

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