液压和化学清洁效率,以释放凝结/花块化-超过程中保留的微塑料
Tyler A Malkoske1, Pierre R Bérubé2, Robert C Andrews1
1Department of Civil and Mineral Engineering, University of Toronto, Toronto, ON M5S 1A4, Canada.
Water research
|April 23, 2025
概括
微塑料 (MP) 通过超过 (UF) 膜有效地被保留. 在预处理过程中添加凝固剂有助于在清洁过程中释放MP,减少了潜在的膜污染.
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) 在全球饮用水源中普遍存在.
- 超过 (UF) 膜 (0.01-0.1微米孔) 预计可以去除MPs.
- 关于MP对UF污染和清洁的影响的数据有限.
研究的目的:
- 评估UF通过凝固预处理对MP的保留.
- 在液压和化学清洗过程中评估MP释放.
- 研究凝固剂剂量对MP释放的影响.
主要方法:
- 用聚乙烯 (PE) MPs (1-50 μm,~907颗粒/L) 增添未经处理的湖水.
- 使用不同剂量的 (0-15 mg/L) 进行凝血/花预处理.
- 进行了UF透,液压清洗和化学清洗 (甲).
主要成果:
- UF保留了大量的议员.
- 液压清洗释放了~50%的MPs,没有凝固剂,随着的添加而减少.
- 化学清洁释放了20-60%的MP;效果因凝固剂剂量而异.
- 凝固剂预处理通常会在清洗过程中增强MP的释放.
结论:
- 凝固前处理可以改善从UF膜中释放的微塑料.
- 需要进一步研究长期MP积累和专门的清洁策略.
- 优化的预处理可以减轻微塑料积累引起的UF污染.
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