单胺对与/或没有正酸盐的生物膜生长的影响,在高居留时间饮用水模型分配系统中
Mahmoud H Badawy1,2, Mitchell G Cooke3, Sigrid Peldszus1
1Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
Journal of water and health
|November 28, 2025
概括
酸盐的添加增加了饮用水系统中的生物膜生长和微生物活动,而高水平的单胺减少了微生物多样性. орто酸盐也稍微加快了单胺的衰变.
科学领域:
- 环境微生物学环境微生物学
- 水的化学反应
- 公共卫生 公共卫生
背景情况:
- 酸盐是饮用水分配系统 (DWDS) 中常见的腐蚀抑制剂.
- 酸盐可能会影响单胺的稳定性和生物膜的形成.
- 了解这些相互作用对于保持水质至关重要.
研究的目的:
- 评估酸盐对生物膜生长和单胺衰变的影响.
- 为了研究不同单胺剂量与正酸盐结合的影响.
- 在模型分布系统 (MDSs) 中评估微生物社区反应.
主要方法:
- 四个基准规模的MDS被运行了15周.
- 测试了两个单胺剂量 (2和3毫克Cl2/L),有和没有正酸盐.
- 分析了可活细胞数量,生物膜改造潜力,代谢活动和遗传多样性.
主要成果:
- 在两种单胺剂量中,添加甲基酸盐增加了可活细胞,生物膜改造潜力和代谢活性.
- 生物膜的遗传多样性受到正酸盐和单胺剂量的影响.
- 没有正酸盐的高单胺导致了最不多样化的社区.
- 低水平的单胺与正酸盐显示出最大的多样性.
- 单胺的衰变在添加正酸盐时略高一些.
结论:
- 酸盐增强生物膜生长和DWDS中的微生物活动.
- 高度的单胺施加选择性压力,减少微生物的多样性.
- орто酸盐似乎可以增强微生物的多样性.
- орто酸盐可能会略微增加单胺的衰变速率.
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