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通过通过EPS修饰通过Acidithiobacillus ferrooxidans进行生物调节驱动的污水泥脱水能力的增强

Yu Xing¹, Wuming Xie², Nan Zhao³

¹State Environmental Protection Key Laboratory of Environmental Pollution Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the PRC, Guangzhou, People's Republic of China.

Environmental technology

|July 18, 2025

概括

通过使用Acidithiobacillus ferrooxidans (A.f) 对污水污泥进行生物调节,可显著提高87.9%的脱水能力. 这种微生物方法的性能优于化学处理,为污泥管理提供了可持续的解决方案.

科学领域:

环境微生物学环境微生物学
生物技术是生物技术.
水处理工程水处理工程

背景情况:

过剩的污泥由于含水量高,因此存在脱水挑战.
传统的化学调节方法通常是低效的,并产生残留物.
需要可持续和有效的污泥排水技术.

研究的目的:

为了研究使用Acidithiobacillus ferrooxidans (A.f) 改善污水污泥脱水能力的生物调节的有效性.
为了比较A.f生物调节与传统化学调节的性能.
阐明污泥脱水改进背后的微生物机制.

主要方法:

在全培养,无细胞过物和Fe2+补充培养中应用A.f.
使用FTIR和拉曼光谱对细胞外聚合物质 (EPS) 的表征.
关键参数的监测:pH值,氧化降解潜力 (ORP),Fe2+和硫酸盐度.

主要成果:

A.f全培养物降低了87.9%的特异性抗过 (SRF),明显超过化学调节 (30.8%的降低).
光谱分析显示,A.f降解了EPS成更简单的化合物,增强了花结构和释放水分.
通过监测参数确认的微生物氧化被确定为主要机制.

结论:

基于AF的生物调节是一种高效和可持续的方法,可以提高污水污泥的脱水能力.
这种微生物方法通过减少化学品的使用,为环境带来了好处.
了解微生物与EPS的相互作用,可以了解先进的污泥处理策略.

关键词:

酸性西托巴西勒斯铁氧化物污水污泥的污水污泥是污水中的污泥.生物调节生物调节脱水能力脱水能力细胞外聚合物质是细胞外聚合物质.

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