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循环絮凝对水中 SUVA 及膜污染影响的研究
王捷 1,2,程志杨 2,贾辉 1,2,张宏伟 1,2,黄亚丽 3
(1 天津工业大学中空纤维膜材料与膜过程省部共建国家重点实验室培育基地, 天津 300387; 2 天津工业大
学环境与化学工程学院,天津 300387;3 天津膜天膜科技股份有限公司,天津,300457)
摘要:本研究将循环接触絮凝与膜过滤相结合组成循环接触絮凝-膜过滤(CF-MF)工艺,以传统混凝-膜过滤
(C-MF)工艺为对照,考察两种工艺在延缓膜污染方面的差异。采用比紫外吸光度(SUVA)作为有机物亲/疏
水特性的评价指标,分析工艺变化对 SUVA 的影响以及 SUVA 和综合膜污染指数(UMFI)之间的内在联
系。结果发现,膜出水 SUVA 与膜污染呈很好的相关性,出水 SUVA 越高,膜污染越严重;在最1佳工艺条
件下, CF-MF 出水和混凝上清液 SUVA 分别达到了 -1·m -1 和 -1·m -1,去除率与 C-MF 工
艺相比分别提高 17%和 29%,说明 CF-MF 工艺对水中疏水性物质的去除效果比 C-MF 更好,有效控制了疏
水性物质对膜形成的污染; 与 C-MF 相比,CF-MF 能够更有效的去除水中的有机物,当混凝剂氯化铁投
-1 -1
加量为 6 、回流絮体浓度为时,UV254 和 DOC 的去除率达到了 %和 %。
关键词:循环絮凝;混凝;过滤;膜污染;SUVA;UMFI
中图分类号:X 52 文献标识码:A
The influence of circulating ulation process on SUVA
and membrane fouling
WANG Jie1,2, CHENG Zhiyang2, JIA Hui1,2, ZHANG Hongwei1,2, HUANG Yali
(1School of Material Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China;
2State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University,
Tianjin 300387, China;3Tianjin MOTIMO Membrane Thechnology CO. , LTD , Tianjin 300457,China,)
Abstract: Comparing with coagulation membrane filtration(C-MF) process, the circulating
ulation membrane filtration-(CF-MF) process is bination of circulating contact
ulation with membrane filtration. The differences of membrane fouling development in the
two processes were investigated in this study. SUVA was used as an evaluation index of
hydrophilic/hydrophobic properties anic matters to assess the effect of process variation on
SUVA as well as to find relation between SUVA and index prehensive membrane fouling.
The results indicated that there exists a good liner relationship between SUVA in membrane
filtration and membrane fouling. The higher SUVA was, the more serious membrane fouling was.
In the op