调整影响硫与的比率,以减轻硫酸盐驱动的自性脱系统中的氧化排放量
Da Di1, Mi Xue1, Caixia Ping1
1College of Environment and Ecology, Taiyuan University of Technology, Jinzhong 030600, China; Innovation Center for Postgraduate Education in Municipal Engineering of Shanxi Province, Taiyuan 030024, China.
Bioresource technology
|February 2, 2026
概括
在硫酸盐驱动的自无化 (SDAD) 中优化硫酸盐与的比率,可以最大限度地减少氧化 (N2O) 的排放. 一个比率为2.6提高了去除到92.7%,同时减少了N2O排放.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 硫酸盐驱动的自脱 (SDAD) 是一个关键的去除技术.
- 了解SDAD的氧化 (N2O) 排放对于环境影响评估至关重要.
研究的目的:
- 在SDAD生物膜反应堆中研究N2O排放和硫酸盐与 (S/N) 摩尔比率之间的关系.
- 确定最佳的S/N比率,以最大限度地去除和最大限度地减少N2O生产.
主要方法:
- 对SDAD生物膜反应堆性能进行实验调查.
- 在一系列S/N比率 (1.7-2.6) 中分析N2O排放.
- 微生物社区分析和遗传潜力的评估 (norB/C-to-nosZ比率).
主要成果:
- 总去除效率 (TNRE) 的峰值达到92.7%,S/N比为2.6.
- 由于酸盐的积累,N2O排放对S/N比率呈现出非线性反应,较低比率 (1.7-2.0) 的排放增加.
- 将S/N优化为2.6将N2O排放因子降低到0.5%,并通过nosZ减少N2O.
结论:
- S/N 摩尔比是控制 SDAD 中 N2O 排放的关键因素.
- 建议2.6的S/N比率作为一种有效的策略,以增强去除和减轻N2O足迹.
- 微生物群落的转移,有利于特定的自营养素和增强/硫代谢,与高效的N2O减少有关.
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