解读自和异电子捐赠者之间的协同作用,以化驱动的混合化脱为先进的去除
Huanghuan Xu1, Xumeng Lin1, Ling Xiong1
1College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
Water research
|August 13, 2025
概括
一个新的矿驱动的混合型脱 (PMD) 系统通过将矿与碳源相结合来增强去除. 与传统方法相比,这种协同方法显著提高了脱率和效率.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 环境工程 环境工程
背景情况:
- 皮里特驱动的自脱 (PAD) 由皮里特的低可溶性而受到限制,导致反应速度缓慢,去除效率低下.
- 现有的脱方法在废水处理中难以达到最佳的和去除效率.
研究的目的:
- 开发和评估一种新的以矿驱动的混合性脱 (PMD) 系统,用于增强和的去除.
- 调查矿和可生物利用的碳来源对脱性能和微生物群落结构的协同效应.
主要方法:
- 开发了一种矿驱动的混合化脱 (PMD) 系统,将矿与酸作为碳源结合起来.
- 在化学氧需求 (COD) 与总 (TN) 比率为3.0的情况下,在批量反应堆和连续流动生物过器中进行了实验.
- 进行了微生物社区分析和基因表达分析,以阐明潜在的机制.
主要成果:
- 该PMD系统实现了高的TN去除效率 (87.99%在批量,86.03%在连续流) 和TP去除 (88.90%在批量,96.32%在连续流).
- 与自身化 (k = 0.033 h−1) 和异构化 (k = 0.085 h−1) 相比,PMD系统表现出明显更高的TN去除速率常数 (k = 0.116 h−1).
- 矿-碳协同作用丰富了关键的脱细菌 (例如,Thauera,Thiobacillus,Azonexus) 并提高了参与脱和矿代谢的关键基因的调节.
结论:
- 矿驱动的混合化脱 (PMD) 系统提供了一种高度有效的策略,用于从废水中提升和的去除.
- 矿和碳源的协同电子捐赠加速了脱,改善了微生物活动,并减轻了污泥被动化.
- 这项研究为脱过程中协同作用的电子捐赠者的机制提供了宝贵的见解,为废水处理中的实际应用铺平了道路.
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