揭示了置阶段对部分化在测序批量反应堆中被忽视的影响:来自不同操作模式的系统的见解
Fangzhai Zhang1, Ziyi Du1, Dan Qu2
1National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
Water research
|June 28, 2025
概括
序列批量反应堆 (SBR) 的性能明显优于部分化 (PN) 的连续水箱反应堆 (CSTR). 通过利用置阶段进行原化,SBR实现了高化积累比率 (NAR),使其成为废水处理的理想选择.
科学领域:
- 环境生物技术环境生物技术
- 污水处理 污水处理 污水处理
- 微生物生态学 微生物生态学
背景情况:
- 部分化 (PN) 是废水处理的一种节能生物工艺.
- 研究了操作参数,但操作模式 (SBR与CSTR) 对PN性能的影响尚不清楚.
研究的目的:
- 为了比较测序批量反应堆 (SBR) 和连续动反应堆 (CSTR) 的部分化性能.
- 调查运行模式对酸盐积累比率 (NAR) 和微生物基因表达的影响.
主要方法:
- 超过128天的SBR和CSTR系统的城市废水处理比较.
- 转录基因分析以评估与化相关的基因表达 (amoA,nxrB).
- 在不同SBR运行阶段 (置,养) 中分析基因表达模式.
主要成果:
- 与CSTR (2.4%4.3%) 相比,SBR实现了显著更高的NAR (高达96.3%).
- 从CSTR过渡到SBR导致NAR增加了14倍.
- 在SBR中,化基因表达,特别是amoA,被上调,置阶段显示出关键的"原始化"效应.
结论:
- 操作模式从根本上影响了部分化性能.
- 由于置阶段的战略作用,SBR在实现高NAR方面优于CSTR.
- SBR为废水处理中的现实PN应用提供了更有利的方法.
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