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在低氨负载条件下的梯度温度调节反应器中,氨氧化微生物的动力学

Prinpida Sonthiphand¹, Napong Songkriengkrai², Nampetch Charanaipayuk²

¹Department of Biology, Faculty of Science, Mahidol University, Bangkok, Thailand.

Journal of environmental management

|March 16, 2025

概括

温度显著影响氨氧化微生物 (AOMs),对于去除至关重要. 氨氧化古生物 (AOA) 喜欢更高的温度,而comammox在较冷的条件下壮成长,氨氧化细菌 (AOB) 显示出广泛的适应性.

科学领域:

环境微生物学环境微生物学
污水处理污水处理污水处理
气循环是指气循环的过程.

背景情况:

氨氧化微生物 (AOMs) 对于工程系统中的去除至关重要.
温度波动可能会破坏氨氧化过程,导致系统故障.
了解微生物对温度的反应对于优化废水处理至关重要.

研究的目的:

调查广泛的温度范围对氨氧化古生物 (AOA),氨氧化细菌 (AOB),comammox,Nitrospira和Nitrobacter的分布的影响.
为了确定不同氨氧化微生物组在低氨负荷下最佳温度范围.
为在除过程中更好地管理温度提供见解.

主要方法:

梯度温度调节反应堆在广泛的温度范围 (10.545.5°C) 中运行.
使用定量PCR来量化来自AOA,AOB和comammox的amoA基因的丰度.
使用高通量测序来分析微生物社区的组成.

主要成果:

在更高的温度 (38.542°C) 中,AOA占主导地位,超过了AOB和comammox.
科马莫克斯对温度上升表现出敏感性,在14~35°C范围内壮成长.
AOB表现出了显著的适应性,在所有测试温度中保持稳定的种群.
在所有温度下,Nitrospira是主要的酸盐氧化细菌 (NOB),而Nitrobacter在较低的温度下增加.

结论:

温度是影响氨氧化微生物的竞争和分布的关键因素.
在较高的温度下,AOA更受欢迎,而comammox更适合于较冷的环境.
AOB表现出对温度变化的弹性,这表明该群体内的各种适应.
优化温度对于有效的去除至关重要,不同的微生物群落对热变化有不同的反应.

关键词:

在AOAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 美国AOB AOB 作为一个comammox.这种细菌是Nitrobacter.尼特洛斯皮拉 (Nitrospira) 是一种有机物.温度温度是指温度.

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