通过纳米过控制铁的释放和发病性细菌在配送管道中的生长,然后采用不同的消毒方法
Xinyuan Yang1, Xiurong Ju2, Haibo Wang2
1Institute of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China; Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Journal of hazardous materials
|November 4, 2024
概括
纳米过和消毒有效控制饮用水问题. 这种方法减少了病原性细菌和铁在配送管道中的释放,改善了水质.
科学领域:
- 水处理技术水处理技术.
- 微生物学 微生物学
- 环境科学环境科学
背景情况:
- 变色和微生物污染是饮用水的主要问题.
- 控制分布管道中铁的释放和病原体的生长仍然具有挑战性.
- 溶解有机物 (DOM) 成分影响微生物活动和铁循环.
研究的目的:
- 研究纳米过与消毒相结合在饮用水质量管理中的有效性.
- 了解DOM去除对细菌生长和铁释放的影响.
- 确定分布管道维护的最佳处理策略.
主要方法:
- 纳米过被用来从DOM中去除素,素和蛋白质.
- 在纳米过后使用和胺消毒.
- 细菌生长 (Pseudomonas aeruginosa),腺三酸盐 (ATP),细胞外聚合物物质 (EPS) 生产,以及降铁细菌 (IRB) 丰富度都得到了量化.
- 分析了管道废水中的铁的物种化和度.
主要成果:
- 纳米过显著减少了与三碳酸 (TCA) 循环相关的关键DOM组件.
- 联合治疗抑制了TCA循环,降低了ATP和EPS的产生,从而减少了致病细菌.
- 较低的DOM度增加了IRB的丰度,促进了Fe3O4的形成,并减少了铁的释放.
- 废水中的铁总度低至16.9μg/L,使用纳米过和胺.
结论:
- 纳米过后的胺消毒是一种高效的策略,可以控制致病性细菌的生长.
- 这种综合方法成功地减轻了饮用水分配管道中铁的释放.
- 该研究提供了一种强有力的方法,用于提高配送系统内的饮用水整体质量.
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