探索在试点规模的DWDS中被忽视的逃生藻类的作用:消毒剂消耗,DBP产量和风险形成风险
Cheng Cen1, Kejia Zhang2, Tuqiao Zhang2
1College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, China; Zhejiang Key Laboratory of Drinking Water Safety and Distribution Technology, Hangzhou, 310058, China.
Environmental pollution (Barking, Essex : 1987)
|September 22, 2023
概括
饮用水系统中的逃生藻类消耗消毒剂并改变副产品的形成. 这会影响水质,增加细胞毒性风险,需要新的管理策略.
科学领域:
- 环境科学 环境科学
- 水质管理水质管理
- 微生物学 微生物学
背景情况:
- 藻类繁殖可能导致藻类进入饮用水分配系统 (DWDS).
- 对于这些逃逸的藻类如何在DWDS中相互作用并影响水质的理解有限.
研究的目的:
- 为了调查脱离藻类在DWDS中的作用.
- 分析藻类与消毒剂的相互作用及其对消毒副产品 (DBP) 形成和细胞毒性的影响.
主要方法:
- 一个试点DWDS在三个场景下运行:用藻类,只管道水,和带藻类的管道水.
- 藻类菌株 (Microcystis aeruginosa,Pseudanabaena sp.) 是一种藻类菌株. 和消毒剂 (,胺) 是不同的.
- 消毒剂的需求,DBP的形成 (THM,HAA等. ) 和细胞毒性被评估.
主要成果:
- 与生物膜相比,逃生藻类对消毒剂的需求较低.
- 藻类菌株和消毒剂类型影响了消毒剂竞争和DBP产量.
- 细胞内反应和细胞损伤改变了DBP的形成,并增加了细胞毒性风险.
结论:
- 逃生藻类通过消耗消毒剂和改变DBP配置文件,显著影响DWDS.
- 藻类细胞完整性和细胞内成分在DBP形成和细胞毒性中起着至关重要的作用.
- 这项研究为管理分布系统中与藻类相关的水质挑战提供了新的见解.
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