温度对化膜气化生物膜的影响:一个实验和建模研究
Emily Clements1, Yanina Nahum2, Patricia Pérez-Calleja2
1Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, IN 46556, USA; Southern Nevada Water Authority, 1299 Burkholder Blvd., Henderson, NV 89015, USA.
Water research
|February 17, 2024
概括
较高的温度通过增加氧化流量和改变生物膜结构,增强了膜气化生物膜反应器 (MABR) 中的氨去除. 这项研究揭示了温度温度.
科学领域:
- 环境工程 环境工程
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 温度显著影响传统的生物膜工艺,但其对膜气化生物膜反应器 (MABR) 的影响不太清楚.
- 化MABR对于废水处理至关重要,优化其性能需要了解温度等环境因素.
研究的目的:
- 研究温度对化MABR的性能,形态和微生物群体的影响.
- 确定温度如何影响氨去除流,生物膜特征和关键微生物群体的丰富性.
主要方法:
- 在10°C和30°C使用化MABR进行了稳定状态实验.
- 采用光现场杂交 (FISH) 来分析微生物群落结构.
- 利用数学建模来模拟氧化流和氧气有限的条件.
主要成果:
- 在30°C运行的MABR表现出较高的氨去除流量 (5.5g-N/m2 /day) 与10°C (3.4g-N/m2 /day) 的MABR相比.
- 30°C的生物膜更薄,更粗,脱落率更高,化细菌的相对丰度更高,包括AOB与NOB的比率更高.
- 在30°C时,Anammox细菌的数量显著增加.
- 建模证实,当氨限时,较高的温度会促进氨氧化,但当氧限时,由于可溶性降低,可以减少流量.
结论:
- 温度是影响化MABR性能,生物膜特性和微生物群体组成的关键因素.
- 优化MABR操作以提高去除需要仔细考虑工作温度.
- 结果为管理和提高MABR系统效率提供了宝贵的见解.
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