元素硫通过微生物协同作用和电子转移优化,增强了碳缺乏废水中的自营性去化去除
Boyi Cheng1, Jinji Jiang2, Lichang Zhou2
1Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China; School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, China.
Water research
|October 9, 2025
概括
元素硫 (S0) 补充剂增强了城市废水处理中的生物去除,特别是在碳缺乏条件下. 这一策略促进了微生物活动,提高了去除效率.
科学领域:
- 环境工程 环境工程
- 微生物学 微生物学
- 水处理 处理水的方法
背景情况:
- 废水处理中的生物去除 (BPR) 往往由于有机碳来源不足而受到限制.
- 元素硫 (S0) 是一种经济的电子捐赠者用于脱,但其在碳限制下增强BPR的作用尚不清楚.
研究的目的:
- 为了研究元素硫 (S) 补充剂在碳缺乏条件下增强非化去除 (DPR) 的有效性.
- 为了阐明微生物社区结构和功能性基因表达变化由S补充诱导.
主要方法:
- 一个长期反应堆研究,比较了补充和不补充的条件.
- 分析硫转化,微生物群落组成 (丰富,多样性) 和分子生态网络.
- 随机森林分析以确定参与代谢,硫氧化和电子转移的关键功能基因.
主要成果:
- 在碳缺乏条件下 (150毫克COD/L),S0补充剂的去除效率从93.3%提高到95.1%.
- 在碳限制期间,S0的利用增加,丰富了微生物社区的丰富性和多样性.
- 观察到聚酸盐积聚生物 (PAO) 和硫驱动的脱剂之间的增强协同相互作用.
- 它调节了参与代谢,硫氧化和电子转移的关键基因,优化了能量代谢.
结论:
- 元素硫 (S0) 作为有效的补充电子捐赠者,用于克服废水处理中的碳缺乏,以增强生物去除.
- 由S0协助的DPR策略促进了协同微生物伙伴关系,并优化了电子运输通路.
- 这种方法提供了一种可持续的解决方案,用于提高营养有限的废水处理系统中的去除效率.
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