酸盐/酸盐依赖的甲驱动膜生物膜反应器的酸盐降解能力
Zi-Han Wang1, Chuan Chen1, Kai-Yin Ye1
1State Key Laboratory of Urban-rural Water Resources & Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
Water research
|July 12, 2025
概括
甲驱动的废水处理有效地去除酸盐和酸盐/酸盐污染物. 化物预丰富增强了系统的弹性,甲衍生的短链脂肪酸调解了污染物减少.
科学领域:
- 环境科学与工程环境科学与工程
- 水处理技术水处理技术
- 微生物生态学 微生物生态学
背景情况:
- 酸盐污染是一个重要的环境和健康问题,通常在水中发现酸盐.
- 以甲为驱动的工艺提供了一种可持续的,低碳的方法来去除氧化污染物.
- 在这些系统中,酸盐和酸盐/酸盐还原之间的相互作用尚未得到充分理解.
研究的目的:
- 通过使用基于甲的膜生物膜反应器 (MBfRs) 调查酸盐和酸盐/酸盐的同时去除.
- 了解酸盐和酸盐/酸盐减少之间的竞争动态和潜在的协同效应.
- 阐明涉及甲驱动污染物清除的微生物群落和代谢途径.
主要方法:
- 两个基于甲的膜生物膜反应器 (MBfR) 运行,其中一个用酸盐 (MBfR-W1) 和另一个用酸盐 (MBfR-W2) 丰富.
- 同时监测酸盐,酸盐和酸盐的去除效率和减少率.
- 使用16S rRNA基因测序进行微生物社区分析,并识别关键代谢中间体,如短链脂肪酸 (SCFA).
主要成果:
- 两种MBfR都实现了高酸盐去除率 (高达5.6毫克BrO3−-Br L−1·d−1) 与酸盐或酸盐去除.
- 酸盐和酸盐优先减少比酸盐,但酸盐预丰富 (MBfR-W2) 提高了对操作变化和较高酸盐负载的弹性.
- 意想不到的是,高酸盐/亚酸盐度似乎刺激了酸盐的减少;异性化剂,而不是甲性化物,占主导地位,SCFA是关键的中间体.
结论:
- 基于甲的MBfR在同时去除酸盐和酸盐/酸盐方面是有效的.
- 预先化可以在具有挑战性的条件下提高系统稳定性和性能.
- 来自甲的SCFA在促进通过替代微生物途径减少多重污染物方面发挥着至关重要的作用.
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