在30°C使用谷氨酸和酸盐作为交替碳来源,完成和稳定增强的生物去除
Rogelio Zuniga-Montanez1, Guanglei Qiu2, Eric Hill3
1Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore 637551, Singapore; Department of Civil and Environmental Engineering, University of California, Davis, CA 95616, USA.
Bioresource technology
|November 9, 2025
概括
这项研究表明,谷氨酸和酸盐可以成为热带废水处理中增强生物去除 (EBPR) 的有效碳来源. 两者都支持完全去除,这表明氨基酸可以补充传统来源.
科学领域:
- 环境微生物学 环境微生物学
- 废水处理工程 废水处理工程
背景情况:
- 增强生物去除 (EBPR) 研究往往侧重于挥发性脂肪酸 (VFA) 和温和条件.
- 热带废水温度 (30°C) 需要评估EBPR的替代碳来源.
研究的目的:
- 评估谷氨酸和酸盐在30°C时作为EBPR的碳来源.
- 为了研究EBPR与交替碳来源的性能.
- 在这些条件下识别聚酸盐积聚生物 (PAO).
主要方法:
- 实验室规模的测序-批量反应堆在30°C的运行.
- 作为碳来源,轮流食谷氨酸和酸盐.
- 监测去除效率和微生物群体组成 (针对PAO).
主要成果:
- 有效的EBPR持续了140天,使用交替的谷氨酸和酸盐.
- 鉴定出Candidatus Accumulibacter是占主导地位的PAO (12.1%的相对丰度).
- 乙酸比谷氨酸更高地支持聚酸基酸盐的形成,尽管两者都使的完全去除成为可能.
结论:
- 谷氨酸和酸盐是热带废水处理中的EBPR可行的碳来源.
- 像谷氨酸这样的氨基酸可以在完整的EBPR系统中补充VFA.
- 需要进一步的研究来确定PAO中氨基酸代谢形成的储存化合物.
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