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定制密集聚纳米过膜用于选择性矿物保留在健康导向的饮用水生产

Jiulong Yin^1,2, QingNan Ouyang¹, Na Li³

¹Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science & Technology, Nanjing 210094, China.

Environmental science & technology

|March 16, 2026

概括

一种新的聚纳米过膜保留了健康饮用水必需的矿物质. 这种耐膜具有卓越的选择性和抗缩性能,优于可持续水处理的传统选择.

科学领域:

材料科学材料科学材料科学
水处理技术水处理技术
膜科学膜科学膜科学

背景情况:

传统的聚胺纳米过 (NF) 膜与过度的矿物质排斥和敏感性作斗争.
现有的聚NF膜缺乏生产富含矿物质饮用水的选择性.
需要先进的NF膜,以平衡矿物质保留,选择性和耐久性.

研究的目的:

开发一种高选择性密集聚NF膜,用于生产健康饮用水.
与现有膜相比,提高矿物质保留,耐性和抗化性能.
用真正的自来水评估膜的性能,并将其与商业标准进行比较.

主要方法:

使用3,5-二基酸 (DHBA) 和二硫酸盐 (SDS) 的界面聚合.
调整SDS度以优化膜孔尺寸分布和性能.
评估水的透性,盐的选择性 (Na2SO4,CaCl2),耐性和抗性质.
用硬自来水测试膜,并评估矿物质保留 (Ca2+,Mg2+) 和长期稳定性.

主要成果:

最优的聚膜 (SAIP-DHBA-0.125) 呈现出高透率 (8.3 L m−2 h−1 bar−1) 和优秀的选择性 (水/Na2SO4: 42.7,CaCl2/Na2SO4: 177.7).
膜表现出优越的耐药性,抗缩能力和矿物保留能力 (55%高于NF270的Ca2 +,Mg2 +).
SAIP-DHBA-0.125膜产生了符合饮用水标准的透物,保留了必需的矿物质并保持了96小时以上的稳定性能.

结论:

开发的聚NF膜为生产健康,富含矿物质的饮用水提供了有前途的解决方案.
其增强的特性,包括选择性,耐性和抗缩性,超越了传统和商业膜.
这项技术具有可持续和以健康为导向的水处理应用的潜力.

关键词:

耐性耐性耐性耐性聚纳米过膜是一种聚纳米过膜.饮用水淡化饮用水淡化表面活性剂是一种表面活性剂.水与盐的选择性.

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