摘要
微观界面作用力被公认是评估膜污染机制的便捷有效手段,但微观界面作用力与不可逆膜污染之间的构效关系还缺乏研究。试验针对典型膜污染物和实际水体,采用拟合分析方法系统研究了“污染物-污染物”“污染物-超滤(UF)膜”的微观界面作用力与总体膜污染(可逆污染和不可逆污染的叠加)、不可逆膜污染之间的相关性。结果表明,“污染物-UF膜”界面作用力与不可逆膜污染显著相关,相关系数均在0.9100以上,最高可达0.9792,可用于评判超滤进水的不可逆膜污染累积潜能。“污染物-污染物”界面作用力与总体膜污染相关性更好,更适合评估进水总体膜污染潜能。研究结果为合理构建UF膜集成工艺提供了重要的依据。
Interfacial forces are recognized as an effective method to analyze the mechanism of membrane fouling.However,there are few reports on the causal relationship between micro-interfacial forces and irreversible membrane fouling.In the experiment,the interfacial forces between pollutants and between pollutants and ultrafiltration(UF)membrane were determined for typical membrane pollutants and actual water,and the correlation between them and total membrane fouling(i.e.,including reversible and irreversible membrane fouling)and irreversible membrane fouling was studied based on linear fitting analysis.The results suggested that,the interfacial force between pollutants and UF was significantly related to irreversible membrane fouling.The corresponding correlation coefficients were all above 0.9100,and the highest was 0.9792.Therefore,the interfacial force of"pollutants-UF"can be used to evaluate the irreversible membrane fouling potential of UF influent.The interfacial force between pollutants and pollutants had a better correlation with the total membrane fouling,which was more suitable for evaluating the total membrane fouling potential of UF influent.The research results provide an important reference for constructing a more reasonable membrane integration process of UF.
作者
刘子豪
孟荣
崔运闯
魏伟
LIU Zihao;MENG Rong;CUI Yunchuang;WEI Wei(Ultra High Voltage Branch of State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050000,China;Aikeweier<Tianjin>Technology Co.,Ltd.,Tianjin 300384,China)
出处
《净水技术》
2024年第1期81-88,共8页
Water Purification Technology
基金
国家电网有限公司科技项目(kj2022-055)。
关键词
不可逆膜污染
超滤(UF)
微观界面作用力
膜污染潜能
相关性分析
irreversible membrane fouling
ultrafiltration(UF)
micro-interfacial force
membrane fouling potential
correlation analysis
