如何有效地一个代谢增强系统与无氧甲脱氧化微生物去除抗生素?
Silvana Quiton-Tapia1, Sabela Balboa1, Francisco Omil1
1CRETUS Institute. Department of Chemical Engineering, School of Engineering, Universidade de Santiago de Compostela, Rúa Lope Gómez de Marzoa, E-15782, Santiago de Compostela, Spain.
Environmental pollution (Barking, Essex : 1987)
|June 22, 2023
概括
这项研究探索了依赖酸盐的厌氧甲氧化 (N-damo) 过程,以去除酸盐,甲和抗生素. 添加稳定了高负载率的过程,增强了N-damo细菌的活动和抗生素生物转化.
科学领域:
- 环境微生物学环境微生物学
- 生物反应器工程 生物反应器工程
- 污水处理 污水处理 污水处理
背景情况:
- 亚酸盐依赖的厌氧甲氧化 (N-damo) 是一个有前途的去除过程.
- 在废水中同时去除甲和抗生素是一个重大的环境挑战.
- 高生物质活动和加载率对于高效的N-damo工艺性能至关重要.
研究的目的:
- 在高生物质活动中研究N-damo过程,以同时去除酸盐,甲和抗生素.
- 评估一种涉及添加的新型运营战略对N-damo工艺稳定性和效率的影响.
- 分析微生物群体的组成及其与工艺性能和抗生素去除的相关性.
主要方法:
- 两个膜生物反应器 (MBR) 在三个高化物加载率 (NLR) 的运行.
- 将作为微量元素添加到料中,以提高反应器的稳定性.
- 监测酸盐去除活性,甲氧化和选择抗生素的生物转化.
- 使用高通量测序分析微生物群落组成.
主要成果:
- 获得了高的亚酸盐去除活性 (高达540毫克N-NO-2g-1VSSd-1),相当于异性脱.
- 添加稳定了高NLR的反应堆运行,使长期性能成为可能.
- N-damo 细菌 (Candidatus Methylomirabilis) 在微生物群体中占主导地位,尽管它们的相对丰度随着生物质活动的增加而下降.
- 硫甲醇,三甲,头素和亚齐胺素的生物转化率很高;西普洛素的去除率很小.
结论:
- 由增强的N-damo工艺可以在高负载率下有效去除酸盐和甲.
- 微生物群体的组成,而不是单独的代谢活动,显著影响抗生素去除效率.
- 需要进一步的研究来优化N-damo工艺,以便在废水处理中全面清除污染物.
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