基于微观界面作用力评价超滤膜不可逆污染的可行性OACSTPCD

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 0.910 0,and the highest was 0.979 2.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.