超滤膜技术处理地表水的运行参数优化
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摘要
针对超滤工艺处理地表水的物理反洗条件进行优化,考察不同运行条件对超滤膜污染的控制效果,从而确定超滤膜处理地表原水的最优运行参数。结果表明:随着超滤膜运行通量的增加,跨膜压差的增长加快。在20和25L/(m~2·h)通量下处理地表原水,反冲洗强度为过滤通量的2倍、曝气强度达到80～100 m~3/(m~2·h)时,超滤膜处于最佳运行状态。
The backwashing conditions of ultrafiltration (UF) membrane process for surface water treatment were optimized. The membrane fouling under different operation conditions was examined to determine the optimal operation parameters of UF membrane. The results showed that with the increase of operating flux of the UF membrane,the growth of transmembrane pressure (TMP) accelerated. When surface raw water was treated at fluxes of 20 L/ (m~2·h) and 25 L/ (m~2·h),the backwashing intensity was twice the filtration flux and the aeration intensity reached 80-100 m~3/ (m~2·h),the UF membrane was in optimal operation.
The backwashing conditions of ultrafiltration (UF) membrane process for surface water treatment were optimized. The membrane fouling under different operation conditions was examined to determine the optimal operation parameters of UF membrane. The results showed that with the increase of operating flux of the UF membrane,the growth of transmembrane pressure (TMP) accelerated. When surface raw water was treated at fluxes of 20 L/ (m~2·h) and 25 L/ (m~2·h),the backwashing intensity was twice the filtration flux and the aeration intensity reached 80-100 m~3/ (m~2·h),the UF membrane was in optimal operation.
引文
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[8]英海泉.超滤在传统工艺供水厂改造中的应用研究[D].哈尔滨:哈尔滨工业大学,2013.Ying Haiquan.Research of Application of Ultrafiltration in Reconstruction of Traditional Process Water Plant[D].Harbin:Harbin Institute of Technology,2013(in Chinese).
[2]Zheng X,Yu M,Liang H,et al.Membrane technology for municipal drinking water plants in China:progress and prospect[J].Desalination and Water Treatment,2012,49(1/3):281-295.
[3]李维佳,李振山,赵华章.超滤技术处理西北农村水窖水的应用研究进展[J].工业水处理,2009,29(8):13-17.Li Weijia,Li Zhenshan,Zhao Huazhang.Application of ultrafiltration to the treatment of rural cistern water in Northwest China[J].Industrial Water Treatment,2009,29(8):13-17(in Chinese).
[4]Shi X,Tal G,Hankins N P,et al.Fouling and cleaning of ultrafiltration membranes:A review[J].Journal of Water Process Engineering,2014,1:121-138.
[5]Chang H,Qu F,Liang H,et al.Correlating ultrafiltration membrane fouling with membrane properties,water quality,and permeate flux[J].Desalination and Water Treatment,2014,56(7):1746-1757.
[6]Field R W,Wu D,Howell J A,et al.Critical flux concept for microfiltration fouling[J].J Membr Sci,1995,100(3):259-272.
[7]Sioutopoulos D C,Karabelas A J.Evolution of organic gel fouling resistance in constant pressure and constant flux dead-end ultrafiltration:Differences and similarities[J].JMembr Sci,2016,511:265-277.
[8]英海泉.超滤在传统工艺供水厂改造中的应用研究[D].哈尔滨:哈尔滨工业大学,2013.Ying Haiquan.Research of Application of Ultrafiltration in Reconstruction of Traditional Process Water Plant[D].Harbin:Harbin Institute of Technology,2013(in Chinese).