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改进了消毒副产品的去除,使用充满粉末活性炭的多硫膜进行了消毒

Yizhi Hou^1,2, Brooke K Mayer¹

¹Department of Civil, Construction and Environmental Engineering, Marquette University, Milwaukee, Wisconsin, USA.

Water environment research : a research publication of the Water Environment Federation

|July 7, 2023

概括

这项研究开发了一种新型的膜,通过固定粉状活性炭来有效地去除和大肠杆菌. 重叠的膜层显著增强了污染物去除和吸附能力,改善了水净化.

科学领域:

材料科学材料科学材料科学
环境工程环境工程
水处理处理水的方法

背景情况:

消毒的副产品,如甲,对健康构成风险.
水中的大肠杆菌污染需要有效的清除策略.
粉末活性炭 (PAC) 对于吸附是有效的,但对于膜应用需要固定.

研究的目的:

开发和评估一个用PAC固定的多硫膜,同时去除和大肠杆菌.
研究膜结构和分层对过和吸附性能的影响.
评估这种复合膜在实际水处理中的可行性.

主要方法:

在聚硫聚合物矩阵内固定PAC (T20等级),以创建复合膜.
在特定条件下测试单层和多层膜系统以检测的吸附和大肠杆菌的去除.
膜过能力,吸附能力和过流量的表征.

主要成果:

一种含有90%T20碳和10%多硫 (M20-90) 的膜显示出显著的甲除 (95%) 和吸附能力 (2.85 mg g-1).
叠加多达六层的M20-90膜显著提高了酸过能力 (到5416 L m−2) 和吸附 (到5.51 mg g−1).
多层膜增加了大肠杆菌的去除从2.5到6.3日志减少,虽然过流量下降.

结论:

将PAC固定在聚硫膜上是一种可行的方法,可以增强的吸附和同时去除微生物.
使用较小的PAC颗粒 (T20) 和多层膜配置优化了净化水的性能.
开发的复合膜为应对消毒副产品和水处理中的细菌污染提供了有希望的解决方案.

关键词:

美国大肠杆菌 (E. coli).甲是一种甲.过器过器过器的过方法使用点水处理 (POU)三甲 (THM) 的使用

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