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在主流试点A-B系统中,有内部碳驱动部分脱的分子证据,加上侧流EBPR处理城市废水的主流试点A-B系统

Da Kang¹, Yuan Yan², I L Han²

¹School of Civil and Environmental Engineering, Cornell University, USA; National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, PR China; Department of Environmental Engineering, Zhejiang University, PR China.

|August 23, 2024

概括

这项研究使用新型的AB-S2EBPR系统从废水中有效地去除. 该过程成功地积累了亚酸盐,证明了可持续废水处理的有希望的方法.

科学领域:

环境工程环境工程
微生物学微生物学
废水处理废水处理

背景情况:

通过酸盐进行快捷的去除是节能的,但对于低强度的城市废水来说具有挑战性.
传统的A-B工艺需要优化,以提高去除效率.

研究的目的:

将侧流增强生物去除 (S2EBPR) 系统集成到A-B工艺 (A-B-S2EBPR) 中,以有效去除.
研究A-B-S2EBPR系统中酸盐积累和微生物群落转移的机制.

主要方法:

试点规模的A-B-S2EBPR系统实施.
现场过程性能监测 (转换,活动测试).
功能性基因丰度分析和单细胞拉曼光谱.

主要成果:

取得了显著的亚酸盐积累 (5.5 ± 0.3毫克N/L,NAR 79.1 ± 6.5%).
实现了高总无机去除效率 (84.9 ± 5.6%) 与低废水度 (4.6 ± 1.8 mg N/L).
确定部分脱化是酸盐积累的主要原因,特定的微生物群体使用聚酸酸盐 (PHA).

结论:

该A-B-S2EBPR系统有效地实现了市政废水中主流的快捷除.
S2EBPR的整合重塑了微生物群落,有利于特定的细菌,如Acinetobacter和Comamonadaceae.
这种方法为可持续的废水处理提供了对微生物动态的洞察力.

关键词:

在A-B-S2EBPR系统中.内部碳来源内部碳来源微生物的动力学亚酸盐的积累亚酸盐的积累部分脱化部分脱化

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