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水质和操作因素对用粉状活性炭去除微囊的影响

Matthew T Alexander¹, Thomas E Waters¹, Morgan McNeely²

¹U.S. Environmental Protection Agency, Office of Ground Water and Drinking Water, Cincinnati, Ohio, USA.

AWWA water science

|October 8, 2024

概括

粉末活性炭 (PAC) 的剂量和类型对于去除微囊素-LR (MC-LR) 是最重要的. 较高的PAC剂量在增加自然有机物质时更有效,这表明因数设计在水处理研究中的实用性.

科学领域:

环境化学环境化学
水处理技术水处理技术

背景情况:

微素-LR (MC-LR) 是一种强烈的毒素,对饮用水安全构成风险.
粉末活性炭 (PAC) 是一种常见的吸收剂,用于从水中去除有机污染物.
优化PAC处理需要了解各种操作和水质参数的影响.

研究的目的:

评估分数因子设计对影响PCR去除MC-LR的选因素的可行性.
确定影响MC-LR移除效率的最重要的因素.
评估PAC剂量与自然有机物度之间的相互作用.

主要方法:

使用 Jar 测试来评估 MC-LR 移除.
一个2^6-1的分数因数设计选了六个因素:PAC类型,PAC剂量,TOC,度,剂量和应用时间.
使用酶相关的免疫吸收试验 (ELISA) 和液体染色学-并联质谱法 (LC/MS/MS) 来量化微囊素-LR度.

主要成果:

PAC剂量和PAC类型是消除MC-LR的最重要的因素,其次是PAC应用时间,在两种分析方法中一致.
在较高的总有机碳 (TOC) 度下,PAC剂量显示出更大的影响.
通过ELISA测量和LC/MS/MS.测量的去除效率之间观察到高相关性 (r > 0.9,p < .05).

结论:

分数因子设计是可行的,并且有效地优化饮用水处理过程,如PAC吸附.
PAC的剂量和类型是MC-LR去除的关键参数,剂量有效性由较高的有机物质水平增强.
该研究验证了在水处理研究中使用因数方法的有效性,与现有的吸附原理保持一致.

关键词:

艾丽莎·伊丽莎·伊丽莎液态色谱学质谱学质谱学微囊是一种微囊 (microcystin).粉末活性炭活性炭的粉末

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