结合臭氧化和生物活性炭工艺,用于控制废水处理厂处理废水中的抗生素耐药性
Xinyang Zhang1, Xi Xue1, Jiangyong Hu1
1Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, 117576, Singapore.
Water research
|October 19, 2024
概括
生物活性炭 (BAC) 和臭氧-BAC治疗与抗生素耐药性 (AR) 相比较. 更高的臭氧剂量和更深的BAC床有效控制了AR,抗生素控制是降低风险的关键.
科学领域:
- 环境科学 环境科学
- 环境微生物学 环境微生物学
- 水处理 处理水的方法
背景情况:
- 生物活性炭 (BAC) 对于废水处理至关重要,降解有机物质.
- BAC和臭氧-BAC对抗生素耐药性 (AR) 和其环境因素的影响需要系统的比较.
- 之前的研究往往侧重于孤立的方面,或缺乏直接比较BAC和O3-BAC过程.
研究的目的:
- 为了全面比较BAC和O3-BAC治疗过程的抗生素耐药性.
- 阐明臭氧预处理和BAC床深在缓解AR中的作用.
- 确定环境因素,细菌群落,以及它们与抗生素耐药性基因 (ARG) 的相关性.
主要方法:
- 对BAC和O3-BAC治疗进行比较分析.
- 评估抗生素去除,废水矩阵变化,抗生素耐药细菌 (ARB),ARG和细菌群体组成.
- 研究不同的臭氧剂量 (1毫克/升与2毫克/升) 和BAC床深度.
主要成果:
- 与ARB相比,臭氧预处理对ARG的敏感性较低.
- 甲和四环素表现出与臭氧的低去除效率,与增加的AR相关.
- 2毫克/升的臭氧化显著改变了微生物群落,而不是1毫克/升;更高的臭氧剂量和更深的BAC床减少了AR.
结论:
- 严格控制废水中的抗生素对于减少与O3-BAC处理相关的AR风险至关重要.
- 抗生素与ARG积累和特定的细菌类 (Pseudomonadota,Actinomycetota,Bacteroidota) 有积极的相关性.
- 优化的O3-BAC过程,包括更高的臭氧剂量和增加的BAC床深度,可以有效地管理AR.
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