Research on Formaldehyde Resistance of Reverse Osmosis Membranes
Focus on Dedicated to evaluating the durability of reverse osmosis membranes(RO)at extreme formaldehyde concentrations.The flux and desalting rate of RO membrane were monitored by immersion experiment in 10000 ppm and 30000 ppm formaldehyde solution for 7 days.The results showed that the flux of brackish water film decreased significantly under both formaldehyde concentrations,while the flux of sea light film decreased relatively little.Remarkably,despite the flux impact,however,the desalting rates of both membranes barely changed during the experiment.This finding points to the fact that when faced with the challenge of high concentrations of formaldehyde,the desalting capacity of RO membranes remains stable,although its flux performance is impaired.The research results not only provide new experimental data for the study of chemical stability of membrane materials,but also provide an important reference for the optimization and application of membrane technology in industrial applications.
万方数据
维普
