Characteristics of Organic Matters of Secondary Effluent and Contributions to Membrane Fouling
Dissolved organic matters of secondary effluent of urban wastewater were divided into strongly hydrophobic,weakly hydrophobic and hydrophilic fractions.And the effects of the three fractions on ultrafiltration membrane were investigated.The results demonstrated that the membrane fouling caused by dissolved organic matters of effluent was strongly hydrophobic> hydrophilic fractions> weakly hydrophobic.The reasons were that (1) membrane fouling was related with molecular weight.Strongly hydrophobic constituent retained by membrane was due to its higher molecule weight.(2) It can be seen from the three-dimensional fluorescence spectra there were humic acid fluorescence peaks in these three fractions.It indicated that humic acid had the largerest contribution to the reduction of membrane flux.(3) Strongly hydrophobic constituent contained the most complex organic matters,and fluorescence peak was the most obvious.This showed the extent of membrane fouling was related with the kind of organic matters and the content of that.In addition,membrane fouling was closely related with the removal rate of organic matters by membrane.FLU may conduct as an index to show organic matters retained by membrane.
Secondary Effluent membrane fouling hydrophobic/hydrophilic fractions three-dimensional fluorescence spectra
Wang Xudong Zhang Huihui Wang Lei Liu Pei Qu Ying Liu Honglu
School of Environmental and Municipal Engineering, Xian University of Architecture and Technology, No. 13 Yanta Road, Xian, 710055, China
国际会议
2013青岛国际脱盐大会(Qingdao International Conference 2013 on Desalination and Water Reuse)
青岛
英文
266-272
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）