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一个电化学无氧动态膜生物反应器,用于增强污泥消化:揭示分子相互作用和微生物机制

Bo Zhou¹, Chengxin Niu¹, Wei Mao¹

¹State Key Laboratory of Water Pollution Control and Green Resource Recycling, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.

|June 28, 2025

概括

将外部电压应用于电化学无氧动态膜生物反应器 (EC-AnDMBR),通过减少膜污染和增强微生物电活性,显著改善了污泥消化和生物气生产. 这一进步优化了废物活性污泥处理.

科学领域:

环境工程环境工程
生物技术是生物技术.
电化学电化学电化学

背景情况:

废物活性污泥处理在效率和可持续性方面提出了挑战.
电化学方法为增强无氧消化过程提供了潜力.
膜污染是动态膜生物反应器的一个主要限制.

研究的目的:

研究逐步外部电压对电化学无氧动态膜生物反应器 (EC-AnDMBR) 的影响.
阐明增强污泥消化和减少膜污染背后的机制.
探索对微生物群落和分子相互作用的影响.

主要方法:

向一个EC-AnDMBR处理废弃物活性污泥的电源应用逐步的外部电压.
监控膜污染,膜压力,挥发性固体消化和生物气生产.
进行了电化学分析,溶解有机物 (DOM) 的分子模拟和微生物社区分析.

主要成果:

增加的电压减轻了膜污染和减少了跨膜压力增加率.
挥发性固体的消化和生物气的生产显著提高.
升高的电压促进了污泥的电活性,质子合电子转移 (PCET) 途径和决定性的微生物社区组合.
分子模拟显示了特定DOM组的丰富和更强的分子间相互作用.

结论:

外部电压通过改善污泥膜相互作用和促进PCET通路,有效地提高EC-AnDMBR性能.
该研究为优化污泥处理技术提供了分子和微生物见解.
这些发现支持开发更有效,更可持续的无氧消化系统.

关键词:

厌氧动态膜生物反应器厌氧动态膜生物反应器外部电压的外部电压.接口热力学接口热力学微生物社区的微生物社区.分子模型的分子模型.质子合电子转移的电子转移.

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