在基于膜的二次废水处理中改善生物污染阻力:通过用3-基-5,5-二甲基antoin进行移植聚合,专注于膜表面的修饰
Godwill Kasongo1, Aude Minang Nkombe1, Mujahid Aziz1
1Environmental Engineering Research Group (EERG), Department of Chemical Engineering, Cape Peninsula University of Technology (CPUT), Chemical Engineering Building, Bellville, Cape Town 8001, South Africa.
Membranes
|October 28, 2025
概括
将3--5,5-二甲基antoin (ADMH) 移植到反透 (RO) 膜上,提高了对细菌污染的抵抗力. 在中度ADMH度下,可以达到对城市废水污染物的最佳性能.
科学领域:
- 膜科学与技术 膜科学与技术
- 环境工程 环境工程
- 聚合物化学 聚合物化学
背景情况:
- 再利用废水对于可持续性和减少淡水需求至关重要.
- 聚胺反透膜 (RO) 面临市政二级废水的污染挑战,影响性能.
- 开发强大的膜对于有效的废水处理和水回收至关重要.
研究的目的:
- 为了增强薄膜复合RO膜的防腐性能.
- 研究植入3--5,5-二甲基antoin (ADMH) 对膜性能对各种污染物的影响.
- 为了确定最佳的ADMH度以提高防腐蚀性.
主要方法:
- 在不同的度下,将ADMH的增殖聚合在薄膜复合RO膜上.
- 对细菌 (大肠杆菌,黄金杆菌) 和模拟的市政废水污水溶液进行膜性能测试.
- 评估生物污染,污染沉积率和流量回收率.
主要成果:
- ADMH移植显著改善了细菌死亡率 (58.9%的大肠杆菌, 37.4%的金黄色细菌).
- 在中度ADMH度下观察到最佳的污染抵抗,污染沉积率在3.7-8.9%之间.
- 流回收率在69.2-96.9%之间,表明膜功能部分恢复.
- 对有机和无机污染物的耐药性没有表现出类似的改善,强调了污染物的特定性能.
结论:
- 将ADMH移植到RO膜上提供了一种可行的策略,以减轻生物污染,特别是来自细菌污染物的生物污染.
- 膜表面的水友性随着ADMH度的增加而增加,但在适度的接种水平上,污染抵抗是最大的.
- 修改ADMH的有效性取决于废水流中存在的污染物类型.
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