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使用膜分离合系统进行纳米催化臭氧化的连续运行:影响因素和机制

Qiong Yang¹, Jianjian Wei², Yili Chen¹

¹, Key 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.

|April 26, 2024

概括

本研究介绍了一种纳米催化臭氧化膜分离 (nCOMS) 系统,使用纳米-MgO来有效去除. 该nCOMS系统实现了高清除率,减少了不可逆转的污染,显示了工业废水处理的前景.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

纳米催化剂增强臭氧化,以去除耐火有机化合物.
在这些过程中,以成本有效的方式分离纳米催化剂仍然是一个重大挑战.

研究的目的:

开发和评估用于林处理的连续纳米催化臭氧化膜分离 (nCOMS) 系统.
为了应对臭氧化系统中纳米催化剂分离的挑战.

主要方法:

合膜分离与纳米MgO催化臭氧化.
构建一个连续的nCOMS系统来处理废水中的诺林.
优化液压保留时间 (HRT) 和纳米-MgO剂量.

主要成果:

在最佳条件下 (HRT=4h,纳米-MgO=0.2 g/L),在低跨膜压力 (<10 kPa) 的情况下,在240分钟内产生了85.2%的奇诺林去除.
臭氧化,催化和膜分离分别导致了57.1%,24.9%和18.0%的去除.
与臭氧化膜分离相比,nCOMS系统显示污染率指数增加了60%,但不可逆转的污染减少了28%.

结论:

该nCOMS系统有效地去除素,提高了效率,减少了不可逆转的污染.
该系统表现出对自然有机物 (NOM) 的弹性,最大限度地减少了对去除和污染的不利影响.
在先进的工业废水处理中,nCOMS系统具有很大的实际应用潜力.

关键词:

催化臭氧化催化臭氧化膜污染是因为膜污染.膜分离器的分离方式纳米催化剂的使用奇诺林 (quinoline) 是一种氨酸.

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