在凝固和污泥储存中,M. aeruginosa-微塑料复合污染物的行为
Zehui Yu1, Xuqi Li2, Zheng Li3
1School of Economy, Shandong Women's University, Jinan, Shandong 250300, China.
The Science of the total environment
|October 26, 2024
概括
这项研究调查了水处理中的Microcystis aeruginosa (M. aeruginosa) 和微塑料. 微塑料有助于藻类的去除和微囊的减少,但PACl污泥由于细胞破裂而带来风险.
科学领域:
- 环境科学 环境科学
- 水处理技术水处理技术
- 生态毒理学 生态毒理学
背景情况:
- 由Microcystis aeruginosa (M. aeruginosa) 引起的有害藻类繁殖 (HAB) 和微塑料污染是全球水质问题的关键.
- 研究这些同时出现的污染物的协同效应对于有效的水资源管理至关重要.
研究的目的:
- 通过使用无机 (PACl) 和有机 (HTCC) 凝固剂在水处理过程中检查M. aeruginosa-微塑料复合物的行为.
- 评估微塑料对藻类去除,微囊减少和污泥特性的影响.
主要方法:
- 使用PACl和HTCC与M. aeruginosa和微塑料进行的凝血-花试验.
- 分析藻类的形成,沉和去除效率.
- 评估微塑料对藻类细胞完整性和储存期间污泥中微囊素水平的影响.
主要成果:
- M. aeruginosa 细胞外聚合物促进了微塑料与藻类的粘附,增强了微塑料的去除.
- 微塑料改善了PACl的藻类去除,但阻碍了HTCC的藻类去除,同时在两种情况下都增强了微囊的去除.
- 微塑料导致M. aeruginosa细胞在PACl污泥中破裂,增加了潜在的风险,但促进了污泥中的有益细菌,帮助控制污染.
结论:
- 微塑料可以在水处理过程中改善M. aeruginosa和相关毒素的去除,但它们与凝固剂的相互作用会影响效率和污泥安全性.
- 由于细胞溶解的增加,PACl污泥中微塑料的存在需要谨慎,而它们在促进有益细菌中的作用为污泥管理提供了潜力.
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