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通过含铁砂过系统增强小尺寸微塑料的保留:有效性和机制

Changjian Luo¹, Ying Yu¹, Yuchen Tang¹

¹Department of Environmental Science, College of Environmental Science and Engineering, Tongji University, State Key Laboratory of Pollution Control and Resources Reuse, Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.

Journal of hazardous materials

|February 22, 2025

概括

含铁的沙子 (IS) 在水过中显著改善了微塑料的去除. 这种新的过介质有效捕获小微塑料,为饮用水处理厂 (DWTP) 提供了一个有前途的解决方案.

科学领域:

环境工程环境工程
水处理技术水处理技术
材料科学材料科学材料科学

背景情况:

传统的沙子过很难去除过孔大小以下的小微塑料 (MP).
这种限制对饮用水处理厂 (DWTP) 构成了重大挑战.
水源中的微塑料污染是一个日益严重的环境问题.

研究的目的:

为了研究加铁砂 (IS) 提高小微塑料的保留效果.
评估IS在克服传统沙子过以去除微塑料的局限性的性能.
评估IS在各种操作和环境条件下的稳定性和适用性.

主要方法:

用铁 (水) 氧化物涂层对石英砂进行修改,以创建IS.
使用200nm (MP200) 和1000nm (MP1000) 的聚烯微塑料进行过试验.
在不同的离子强度,流速和在天然水成分的存在下进行测试.

主要成果:

IS极大降低了MP200和MP1000的废水质量百分比,从50%以上和39%降至3%以下.
IS证明了在不同的离子强度和价值度中完全保留微塑料.
在可变的流量,中断和复杂的水矩阵下,IS保持了高的去除效率.

结论:

带铁的沙子是一种高效且可扩展的解决方案,用于从水中去除小微塑料.
IS克服了传统沙子过器的局限性,提供了更好的微塑料清除效率.
这项技术显示出改善饮用水处理和减轻微塑料污染的前景.

关键词:

电静电吸引力电静电吸引力铁装载装载的铁.微塑料是一种微塑料.沙子过的过方法污水处理污水处理污水处理

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