在处理含有微塑料的水的凝结-超过程中,膜污染的特征和机制
Yue Shen1, Qiyin Tan1, Jiahao Sun1
1College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China; Key Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University, Jinhua 321004, China.
The Science of the total environment
|September 27, 2024
概括
微塑料 (MP) 在水处理中加剧了膜污染,但最佳的聚合物化 (PAC) 凝固剂水平可以减轻这种影响. 较高的PAC度促进了多孔蛋糕层,减少了国会议员的污染.
科学领域:
- 环境科学 环境科学
- 水处理工程水处理工程
- 材料科学 材料科学 材料科学
背景情况:
- 微塑料 (MP) 通过积累污染物和影响凝固-超 (CUF) 过程,在水处理方面带来了挑战.
- 了解MP,污染剂和凝固剂之间的相互作用对于有效的水净化至关重要.
研究的目的:
- 研究CUF过程中MP引起的膜污染的机制.
- 为了评估不同高分子化 (PAC) 凝固剂剂量对MP诱导的污垢的影响.
- 分析影响污染缓解的界面相互作用和蛋糕层结构.
主要方法:
- 用受微塑料污染的水进行凝结-超 (CUF) 过程的实验调查.
- 聚合化 (PAC) 凝固剂剂量的系统变化.凝固剂剂量.
- 应用扩展的德贾古因-兰道-维维-奥弗比克 (XDLVO) 理论来分析界面相互作用.
- 蛋糕层结构和膜污染行为的特征.
主要成果:
- 微塑料的存在最初会加剧膜污染,但在较高的PAC度下 (最优于0.2mM) 污染会减轻.
- 扩展的DLVO理论解释了MP如何改变污染物-膜相互作用,从而减轻污染.
- 最佳的PAC度促进了松散,多孔的蛋糕层,破坏了污垢结构,提高了水处理效率.
结论:
- 聚合化 (PAC) 剂量是控制微塑料诱导的膜污染的关键因素.
- 这项研究提供了一种新的方法,以优化CUF流程处理受微塑料污染的水.
- 结果为提高水处理效率和减少微塑料存在时的膜污染提供了实际见解.
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