In order to effectively separate dyes and salts from dye wastewater and promote the recycling of dyes,the article explores the effect of GAZ/PEI on the microstructure,surface roughness,filtration performance and its application in the treatment of simulated reactive black 5(RB5)dye wastewater during the preparation of PVDF composite loose nanofiltration membranes by a combination of co-deposition and interfacial polymerisation.The results showed that with the increase of GAZ/PEI,the surface nodules of membranes,the thickness of the selected layer,the surface roughness and the PEG800 retention rate decreased,while the pure water flux and the dye wastewater flux increased.When GAZ/PEI was 9/91,the membrane performance was the best.Compared with single amine,the fluxes of pure water and dye wastewater were increased by 91.6%and 109.1%,respectively.The retention rates of RB5 and NaCl were 94.3%and 2.1%,respectively.During the running time,the PVDF composite loose nanofiltration membranes based on mixed amine showed good running stability.
维普
万方数据
