在现场植入硫,有效地促进在低碳无氧氧系统中去除
Jia-Min Xu1, Miao Gu1, Yi-Fan Zhang2
1State Key Laboratory of Urban Water Resources and Environment, School of Eco-Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China.
Water research
|January 31, 2026
概括
在低碳环境下,很难有效地从废水中去除总 (TN). 这项研究引入了硫 (S) 增强的无氧/有氧 (HS) 系统,以便在没有额外的碳的情况下更好地去除TN.
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:
- 低碳废水在有效的总 (TN) 清除方面存在挑战,原因是电子供体稀缺.
- 不完整的脱和酸盐积累是传统处理系统中常见的问题.
- 现有的方法通常需要额外的碳输入或工艺修改,增加成本和复杂性.
研究的目的:
- 为改善从低碳废水中提取TN开发一种现场硫增强的无氧/有氧 (HS0AD-A/O) 系统.
- 调查元素硫 (S) 在驱动无化过程中的电子再分配中的作用.
- 为了阐明微生物机制和电子转移途径涉及S0增强脱化.
主要方法:
- 在不同的C/N比率下建立和运行HS0AD-A/O和传统HD-A/O系统.
- 电子平衡分析以量化S0氧化对总电子流量的贡献.
- 动力分析,微生物社区分析 (16S rRNA测序) 和基因转录分析 (nirKS, nosZ).
主要成果:
- 与高清A/O相比,AD-A/O系统的TN去除效率 (32.76-111.16%) 显著更高.
- 氧化在很大程度上 (9.21-27.59%) 促进了电子流量,弥补了碳缺乏.
- 增加的S0植入将主要途径转移到基于S0的自性脱化,最大限度地减少酸盐积累并实现S0节约效应.
结论:
- 在现场的S0植入有效地重组了电子传输网络,以便在低碳废水中稳定有效地去除TN.
- 该HS0AD-A/O系统可实现碳和S0的双节约,提供了一个成本有效的解决方案.
- 由S0驱动的异构型和自制型脱剂之间的协同微生物分工确保了完全的脱和N2生产.
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