化工进展 ›› 2015, Vol. 34 ›› Issue (02): 565-570.DOI: 10.16085/j.issn.1000-6613.2015.02.042

• 资源与环境化工 • 上一篇    下一篇

循环水排污水中残余阻垢剂对反渗透膜性能的影响

杨伟, 刘芳, 高雅, 闫茜, 张利   

  1. 中国石油大学(华东)化学工程学院, 山东 青岛 266580
  • 收稿日期:2014-07-11 修回日期:2014-08-17 出版日期:2015-02-05 发布日期:2015-02-05
  • 通讯作者: 刘芳,教授,博士后,主要研究方向是废水的深度处理及回用技术研究。E-mail:liufangfw@163.com
  • 作者简介:杨伟(1987-),男,硕士研究生,研究方向为水污染控制与资源化利用。E-mail:yangwei6835@163.com

Effects of residual scale inhibitors on the performance of reverse osmosis membrane in blow-down water from circulating water system

YANG Wei, LIU Fang, GAO Ya, YAN Xi, ZHANG Li   

  1. College of Chemical Engineering, China University of Petroleum, Qingdao 266580, Shandong, China
  • Received:2014-07-11 Revised:2014-08-17 Online:2015-02-05 Published:2015-02-05

摘要: 循环水排污水中残余的阻垢剂会导致其水质的变化,从而影响反渗透膜性能。本文以循环水中常用的阻垢剂聚天冬氨酸(PASP)、羟基亚乙基=膦酸(HEDP)和氨基三亚甲基膦酸(ATMP)为研究对象,首先考察了它们的阻垢性能,然后在此基础上,通过静态浸泡试验和动态试验考察了它们的存在对反渗透膜性能的影响。研究结果表明,PASP、HEDP和ATMP中,PASP的阻垢性能最优,阻垢率高达84.21%,三者均会对反渗透膜的表面结构、组成成分、膜通量以及脱盐率产生一定的影响。当PASP、HEDP和ATMP的浓度分别为50mg/L、10mg/L和30mg/L时,在反渗透系统连续运行10h后,膜通量分别下降5.53%、4.89%和9.09%,小于空白时的18.95%;此外,脱盐率有不同程度的提高。

关键词: 循环水排污水, 阻垢剂, 反渗透膜性能, 膜通量

Abstract: Residual scale inhibitors can cause water quality changes in circulating cooling process,thus affect the performances of reverse osmosis membrane. This study investigated the scale inhibition performance of scale inhibitors,PASP,HEDP and ATMP. The effects on the performance of reverse osmosis membrane were investigated by static test and dynamic test. Results showed that among PASP,HEDP and ATMP,the scale inhibition performances of PASP were best and scale inhibition rate could be as high as 84.21%. All the three materials had certain effects on the surface of the reverse osmosis membrane structure,composition and membrane flux. When the concentration of PASP,HEDP and ATMP was 50mg/L,10mg/L and 30mg/L respectively,the membrane flux decreased by 5.53%,4.89%,9.09%,less than 18.95% of the blank solution. In addition,desalination rates increased.

Key words: blow-down water from circulating water system, scale inhibitor, performance of reverse osmosis membrane, membrane flux

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