基于2种材质FO膜对OMBR运行特性影响的研究

Research on influence of two type material of forward osmosis membrane to operating characteristics of the osmotic membrane bioreactor

通过水通量、反渗盐通量、污染物去除率考察了2种正渗透膜对OMBR运行特性的影响,并对膜污染特性进行了研究。结果表明,水通道蛋白(AQP)膜和醋酸纤维素(CTA)膜平均水通量分别为8.90、4.96 L/(m2·h),平均反渗盐通量分别为13.06、6.36 g/(m2·h)。CTA膜组氨氮、总氮和总磷的平均去除率分别为98.8%、94.1%和98.9%。AQP膜和CTA膜膜面污染中,C、O原子数占比分别为47.19%、35.13%和66.71%、24.38%。AQP膜污染蛋白质和多糖含量均高于CTA膜,平均荧光强度分别为72.98和79.49。

The influence of two kinds of forward osmosis membranes to the operation characteristics of the forward osmosis membrane bioreactor were investigated by water flux,reverse osmosis salt flux and pollutant removal rate,and membrane fouling characteristics were also studied.The results showed that the average water flux of aquaporin(AQP)membrane and cellulose triacetate(CTA)membrane was 8.90 L/(m2·h)and 4.96 L/(m2·h),and the average reverse osmosis salt flux was 13.06 g/(m2·h)and 6.36 g/(m2·h),respectively.The average removal rates of ammonia nitro-gen,total nitrogen and total phosphorus by CTA membrane were 98.8%,94.1%and 98.9%,respectively.The ratios of C and O atoms in the contamination of AQP membrane and CTA membrane was 47.19%,35.13%and 66.71%,24.38%,respectively.The contents of protein and polysaccharide in the contamination of AQP membrane are higher than those in CTA membrane,the mean fluorescence intensity was 72.98 and 79.49,respectively.