| 次氯酸钠溶液对反渗透复合膜的改性 |
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| 引用本文： | 翟晓飞,孟建强,张宇峰,李冉. 次氯酸钠溶液对反渗透复合膜的改性[J]. 天津工业大学学报, 2011, 30(2): 7-11 |
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| 作者姓名： | 翟晓飞 孟建强 张宇峰 李冉 |
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| 作者单位： | 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,300160 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 用次氯酸钠(NaClO)溶液对一系列商品反渗透复合膜进行改性,考察该改性方法对4种商品反渗透膜的通量、截盐及脱硼性能的影响,同时考察了膜性能与进水pH值的关系.结果表明:通过控制NaClO改性条件可提升反渗透复合膜的脱硼和截盐性能;改性后的膜在进水pH=11的条件下,脱硼率达到最大,透过液中硼质量浓度小于0.5 mg/L,符合WHO饮用水硼浓度标准.
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| 关 键 词： | 反渗透复合膜 次氯酸钠改性 脱硼 截盐 |
Sodium hypochlorite solution modification on reverse osmosis composite membrane |
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| ZHAI Xiao-fei,MENG Jian-qiang,ZHANG Yu-feng,LI Ran. Sodium hypochlorite solution modification on reverse osmosis composite membrane[J]. Journal of Tianjin Polytechnic University, 2011, 30(2): 7-11 |
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| Authors: | ZHAI Xiao-fei MENG Jian-qiang ZHANG Yu-feng LI Ran |
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| Affiliation: | ZHAI Xiao-fei,MENG Jian-qiang,ZHANG Yu-feng,LI Ran(State Key Laboratory of Hollow Fiber Membrane Materials and Processes,Tianjin Polytechnic University,Tianjin 300160,China) |
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| Abstract: | A series of commercial reverse osmosis(RO) composite membranes are modified with NaClO,and the effects of the modification for four commercial RO membranes on permeate flux,salt rejection and boron removal are investigated.The relation between membrane performance and feed pH value is also studied.The results indicate that controlled sodium hypochlorite modification is conducted to improve the boron removal and salt rejection performance of RO membranes.Boron can be removed efficiently at pH of 11 after mod... |
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| Keywords: | reverse osmosis composite membrane sodium hypochlorite modification boron removal salt rejection |
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