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聚偏氟乙烯(PVDF)以其优良的化学稳定性、耐热性和易成膜等特点在膜合成中倍受青睐,但由于PVDF膜的疏水性,使其在水处理领域的应用受到了限制。纳米SiO2/PVDF离子交换膜电渗析处理含阴离子聚丙烯酰胺(APAM)高矿化度污水膜污染试验研究表明,APAM对SiO2/PVDF和PVDF阴离子交换膜的污染主要是膜表面吸附污染,阻碍了离子的迁移。扫描电镜和能谱分析证实了阴膜表面的污染物成份是APAM和少量钙的无机盐。APAM对阳膜的污染较轻。SiO2/PVDF膜的抗APAM的污染能力好于PVDF膜。
Polyvinylidene fluoride (PVDF) is favored in membrane synthesis due to its excellent chemical stability, heat resistance and easy film formation, but due to the hydrophobic nature of PVDF membrane, its application in the field of water treatment is affected limit. Nano-SiO2 / PVDF ion-exchange membrane electrodialysis treatment APAM high salinity wastewater membrane pollution test results show that, APAM SiO2 / PVDF and PVDF anion exchange membrane pollution is mainly adsorbed on the membrane surface contamination, hinder the Ion migration. Scanning electron microscopy and energy spectrum analysis confirmed that the contaminant component of the surface of the membrane was an inorganic salt of APAM and a small amount of calcium. APAM is less polluting of the yang membrane. SiO2 / PVDF membrane anti-APAM pollution than PVDF membrane.