火电厂中水回用RO膜污染特征研究
作者:于海琴1,刘正修2,李进1,褚彦杰1
单位: 1北京交通大学土建学院市政与环境工程系,北京,100044;2北京京能热电股份有限公司, 北京
关键词: 中水回用;电厂;反渗透;膜污染;分布特征
出版年,卷(期):页码: 2012,32(3):75-78

摘要:
城市污水深度回用为火力发电厂锅炉补给水已成为世界各国解决缺水问题的主要方案之一,中水水质对深度回用工艺中反渗透膜的影响不容忽视。将电厂中水回用工程中污染的反渗透膜组件进行解剖分析,通过加压染料试验、表观观察、烧失量分析、SEM-EDX、GC-MS等方法对膜面污染物及其在膜面的分布特征进行研究。结果表明,膜面主要为有机污染,主要污染物为烃类、脂肪酸类物质;少量无机污染主要是SiO2;污染物总量沿从膜卷进口端到出口端的方向逐渐增多,无机污染的变化与之相同,而有机污染的变化与之相反。表明阻垢和杀菌预处理系统及维护管理工作完善。
Reusing municipal sewage as boiler make-up water in Thermal Power Plant has become one of the mostly schemes to mitigate the shortage of water all over the world. the Influence of secondary effluent water quality on RO in reclaimed water advanced treatment technology cannot be ignored. Dissecting analysis of the fouled reverse osmosis membrane module from reclaimed water reuse system in thermal power plant was conducted through pressurized dye test, apparent observation, LOI and by using SEM-EDX and GC-MS. The results showed that the foulants deposited on the membrane surface contained large amount of organic substance such as the functional groups based  on alkyl and R-COO,and small amount of inorganic materials such as SiO2. The foulant consumption increased from the inlet of the module to the outlet,the variation of the inorganic is the same as this,while that of organic is on the contrary. The results obtained from the tests indicate the pretreatment system, scale and microorganism control are absolutely normal.
于海琴(1965- ),女,北京人,副教授,硕士生导师,主要从事膜分离技术与应用、水处理和污水回用领域的教学和科研工作,hqyu@bjtu.edu.cn。

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