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Updated: Jun 16, 2025

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一个新的NOB在一个大规模的子废水处理系统中对去除的积极贡献

Pengfei Hu^1,2, Youfen Qian^1,2, Yanbin Xu³

¹Civil and Environmental Engineering, Technion - Israel Institute of Technology, Haifa 320003, Israel.

Water research X

|August 19, 2024

概括

新发现的酸盐氧化细菌 (NOB) 种类Candidatus Nitrospira NOB01和NOB02在废水处理厂中被发现. 这些新型NOB在波动的条件下表现出了显著的代谢多功能性和生存策略,为改进的去除技术提供了洞察力.

科学领域:

环境微生物学环境微生物学
废水处理技术废水处理技术
细菌生理学和生态学

背景情况:

氧化细菌 (NOB) 在基于无氧氨氧化 (anammox) 的去除系统中构成挑战.
目前抑制NOB的策略是基于对其多样性和生存机制的有限理解.
关于现代废水处理厂 (WWTP) 中的NOB生态生理学的知识缺口存在.

研究的目的:

为了识别和表征在anammox驱动的WWTP中的新型NOB物种.
阐明这些NOB的代谢多功能性和生存策略.
为在基于anammox的去除过程中抑制NOB提供见解.

主要方法:

从一个全面的WWTP处理子繁殖废水的元基因组数据分析.
对恢复的NOB物种进行基因组和现场转录组分析.
在不同溶解氧 (DO) 条件下对NOB活动的研究.

主要成果:

发现了两个新的NOB谱系,暂时命名为Candidatus Nitrospira NOB01和Candidatus Nitrospira NOB02.
证明了这些NOB在广泛的DO水平 (0.01-5.01 mg/L) 中具有很高的代谢多功能性和活性.
确定了独特的基因和途径 (例如,酸盐酸酶,尿酶,还原型甘氨酸途径,酶),有助于NOB生存和利基区分.

结论:

发现新的Candidatus Nitrospira菌株显著扩大了对NOB生态生理学的理解.
已确定的代谢途径突出显示了NOB在复杂的WWTP环境中的适应性和生存策略.
研究结果为制定有针对性的策略提供了有价值的见解,以抑制基于anammox的废水处理中的NOB.

关键词:

氨的氧化方式是氨氧化.亚酸盐的氧化过程移除的方法移除的方法污水处理污水处理污水处理

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