Integrated Fe-based floc-membrane process for alleviating ultrafiltration membrane fouling by humic acid and reservoir water

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Integrated Fe-based floc-membrane process for alleviating ultrafiltration membrane fouling by humic acid and reservoir water
	Qu, Jiuhui; Liu, Huijuan; Hu, Chengzhi; Li, Wenjiang; Xue, Wenjing; Ma, Baiwen
刊名	JOURNAL OF MEMBRANE SCIENCE
	2018-10-01
卷号	563 页码:873-881
关键词	UF membrane performance Fe-based flocs Integrated process Humic acid Reservoir water
ISSN号	0376-7388
文献子类	Article
英文摘要	Integrated ultrafiltration (UF) membranes are a promising technology in water treatment. However, commonly used granular adsorbents are only injected into the membrane tank once, which not only results in serious membrane surface damage, but also severe membrane fouling due to the low utilization efficiency of adsorbents over time. To overcome these disadvantages, loose Fe-based flocs, which display better sludge discharge than Al-based flocs, were investigated to improve integrated UF membrane performance under different injection frequencies with humic acid (HA) and reservoir water. Results showed that multiple dynamic floc layers were formed with batch injections and a critical injection frequency existed. When the injection frequency was too low, membrane fouling was induced by the formation of a dense HA cake layer on the floc surface. In contrast, it was alleviated when the HA molecules entering the membrane tank did not exceed the adsorption ability of the flocs injected each time. HA removal efficiency also increased with increasing injection frequency due to the improvement of floc utilization efficiency. With changing floc characteristics, better membrane performance was induced, especially under acidic conditions, which was ascribed to the higher positive surface charge and specific surface area of flocs. Raw water experiments further confirmed the excellent membrane performance based on high pollutant removal efficiency and minor membrane fouling. According to the outstanding membrane performance, this novel integrated floc-membrane process has great application potential in water treatment.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41377]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Qu, Jiuhui,Liu, Huijuan,Hu, Chengzhi,et al. Integrated Fe-based floc-membrane process for alleviating ultrafiltration membrane fouling by humic acid and reservoir water[J]. JOURNAL OF MEMBRANE SCIENCE,2018,563:873-881.
APA	Qu, Jiuhui,Liu, Huijuan,Hu, Chengzhi,Li, Wenjiang,Xue, Wenjing,&Ma, Baiwen.(2018).Integrated Fe-based floc-membrane process for alleviating ultrafiltration membrane fouling by humic acid and reservoir water.JOURNAL OF MEMBRANE SCIENCE,563,873-881.
MLA	Qu, Jiuhui,et al."Integrated Fe-based floc-membrane process for alleviating ultrafiltration membrane fouling by humic acid and reservoir water".JOURNAL OF MEMBRANE SCIENCE 563(2018):873-881.