在同步化和自化脱过程中增加负载率时解除性能:功能和生态分析方法
Oscar Franchi1, Antonia Araya2, Alberto Aguirre3
1Facultad de Ciencias Naturales, Matemática y del Medio Ambiente, Universidad Tecnológica Metropolitana, Las Palmeras 3360, Ñuñoa, Chile.
The Science of the total environment
|January 5, 2025
概括
这项研究研究了硫驱动的同时化和自性脱 (SNAD) 处理水的微生物动力学. 发现负面的微生物相互作用,而不仅仅是人口转移,在高负载下导致去除不稳定性.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 水处理工程水处理工程
背景情况:
- 水中的污染对环境和健康构成重大风险.
- 硫驱动的同时化和自性脱 (SNAD) 是一个有前途的,具有成本效益的废水处理方法.
- 了解微生物动态对于优化SNAD效率至关重要.
研究的目的:
- 在硫驱动的SNAD过程中,分析微生物种群和在流化床反应器中的相互作用.
- 研究增加载率 (NLR) 对工艺性能和微生物群落的影响.
- 为了将微生物社区结构和生态网络与去除效率相关联.
主要方法:
- 一个0.8升的流化床反应堆在不同的负载率 (NLR) 和液压停留时间 (HRT) 下运行.
- 使用功能和生态网络分析分析了微生物种群.
- 在整个实验中,监测了去除的效率 (总,,酸盐).
主要成果:
- 使用较长的HRT,可以实现高的去除效率 (93.5%的总N,95.1%的).
- 过程不稳定性和减少酸盐去除发生在更短的HRT和更高的NLR.
- 增加NLR对氧化硫细菌产生了负面影响,与污水中酸盐含量增加相关.
- 生态网络分析揭示了稳定化的积极相互作用,以及涉及异质菌和硫氧化细菌的消极相互作用.
结论:
- 微生物相互作用,特别是某些细菌之间的负面相互作用,显著影响SNAD的稳定性和性能.
- 功能和生态网络分析比传统方法更深入地了解SNAD过程.
- 优化微生物群体相互作用是提高硫驱动SNAD可靠性以去除的关键.
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