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与颗粒活性炭相比,贝用于饮用水过:优点和局限性

Huirong Lin^1,2, Quanyang Hou^1,2, Xiaohui Sun¹

¹College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China.

Environmental science and pollution research international

|November 11, 2023

概括

烧焦贝 (COS) 和颗粒活性炭 (GAC) 生物过器的混合物有效地去除了传统的污染物,并显著减少了抗生素耐药性基因 (ARG). 这种水处理的综合方法比单介质过器提供了更高的性能.

科学领域:

环境科学与工程环境科学与工程
水处理技术水处理技术
微生物学和环境化学

背景情况:

生物过器 (BF) 对于处理微污染源水至关重要,介质选择影响了污染物去除效率.
烧焦贝 (COS) 和颗粒活性炭 (GAC) 是常见的生物过介质,每个都有不同的去除特性.
了解不同生物过介质对抗生素耐药性基因 (ARG) 的影响对于公共卫生至关重要.

研究的目的:

为了比较装有COS,GAC和COS+GAC混合物 (Mix) 的生物过器的性能,用于处理微污染的源水.
评估不同介质对各种污染物的选择性去除效应,包括度,TOC,UV₂₅₄和ARGs.
评估生物过介质在塑造细菌群体结构中的作用及其与ARG丰度的相关性.

主要方法:

三个平行生物过器 (COS,GAC,Mix) 在一个带有天然贝的粗过器下游运行.
在废水中分析了水质参数 (TOC,UV₂₅₄,度) 和细菌群落,包括ARG丰度.
使用SourceTracker和生物标记分析来了解细菌社区结构及其驱动因素.

主要成果:

GAC显示TOC和UV₂₅₄的更高的去除,而COS在降低度方面更有效.
粗过器显著减少了总细菌和ARGs. COS生物过器表现出丰富的细菌群落,但导致了更高的ARG泄漏.
混合生物过器显示了ARG的绝对和相对丰度最低,表明在减少传统污染物和ARG方面表现优越.

结论:

联合COS+GAC生物过器 (Mix) 协同利用单个介质在传统污染物清除方面的优势.
与单介质过器相比,Mix生物过器在ARG的绝对和相对丰度方面实现了最显著的减少.
生物过器中的介质选择在控制细菌群落和减轻水处理中抗生素耐药性的传播方面发挥着至关重要的作用.

关键词:

抗生素耐药性基因是抗生素耐药性的基因.饮用水的处理方法过器过器过器颗粒状活化碳是什么颗粒状活化碳贝的外是一个贝.

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