废污泥发酵和硫酸盐减少之间的相互促进:硫和碳代谢合机制
Wenzhuo Jiang1, Wei Zeng1, Mengjia Zhan1
1National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China.
Bioresource technology
|March 14, 2026
概括
这项研究引入了使用废弃活性污泥的无氧发酵硫酸盐减少系统. 它通过促进发酵和释放有机物质,有效地去除硫酸盐并减少污泥.
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.
- 废物管理 废物管理
背景情况:
- 生物硫酸盐的减少至关重要,但受到外部电子捐赠者成本和碳排放的阻碍.
- 废弃活性污泥 (WAS) 提出了处理挑战,需要有效的处理方法.
研究的目的:
- 开发一个集成的无氧发酵-硫酸盐减少 (AF-SR) 系统,利用WAS.
- 为了同时处理硫酸盐废水并减少污泥量.
主要方法:
- 使用WAS作为主要基板构建了一个AF-SR系统.
- 在不同硫酸盐度 (200-800 mg/L) 下监测了硫酸盐去除效率和污泥减少.
- 分析了微生物社区结构,代谢途径和碳硫合机制.
主要成果:
- 添加硫酸盐 (200-800毫克/升) 显著增强了发酵,有机物增加了6.6倍.
- 该系统实现了97.4%的硫酸盐去除效率.
- 硫酸盐及其还原产品诱导了微生物压力,促进了污泥分解和有机物质释放.
- 微生物分析显示发酵细菌 (Thauera,Ottowia) 和硫酸盐减少细菌 (Desulfomicrobium,Desulfobacterium) 的丰富.
- 建立了一个有效的代谢网络,涉及糖解,氨基酸,短链脂肪酸和硫代谢.
结论:
- 通过利用WAS,AF-SR系统有效地去除硫酸盐并减少污泥.
- 该研究阐明了碳 - 硫合机制,突出了微生物相互作用的协同作用.
- 这种综合方法为硫酸盐废水和WAS处理提供了一个环境和经济可行的解决方案.
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