供水系统中抗生素抗性基因的时空变化及影响因素研究进展

    Research advances in spatiotemporal variation of and influencing factors for antibiotic resistance genes in drinking water supply systems

    • 摘要: 抗生素抗性基因(antibiotic resistance genes, ARGs)是饮用水中普遍存在的新污染物,对人类健康构成了潜在风险。净水处理和管网输配是供水系统的主要环节。虽然已有一些研究关注了饮用水ARGs的赋存和迁移,但对供水系统中ARGs的时空变化特征及其影响因素和内在机制的了解仍存在严重不足。基于已发表的饮用水ARGs相关研究,本文分析了饮用水中ARGs的来源和健康风险,探究了饮用水中ARGs的时空变化特征,解析了水源、过滤工艺、消毒技术、管材和水力条件对于供水系统水相或生物膜相ARGs的影响和内在机制,可以为饮用水微生物风险评估和控制对策的制定提供依据。

       

      Abstract: Antibiotic resistance genes (ARGs) are emerging contaminants prevalent in drinking water, posing a potential threat to human health. Water treatment and distribution are the main part of drinking water supply systems. Although there have been studies on the occurrence and migration of ARGs in drinking water, the understanding of the temporal and spatial variation characteristics of ARGs in drinking water supply systems and associated influencing factors and mechanisms is still highly insufficient. Based on published studies on ARGs in drinking water, we analyze the sources, health risks, and temporal and spatial variation characteristics of ARGs in drinking water as well as the influence of water source, filtration process, disinfection technology, pipe material, and hydraulic conditions on ARGs in the water or biofilms of drinking water supply systems and associated mechanisms. This article can provide a basis for assessing drinking water microbial risks and developing control measures.

       

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