溶解性微生物产物在GO/PVDF杂化膜面的污染行为

为了解析溶解性微生物产物（SMP）在GO/PVDF杂化膜面的污染特性，对膜片进行了宏观污染实验，并采用耗散石英微晶天平（QCM-D）从微观角度分析了SMP在自制镀膜芯片上的吸附规律和污染层结构变化.结果表明，GO含量为0.5wt%的膜污染恢复率最高（79.95%），抗污染能力最强.QCM-D实验发现，GO含量为0wt%镀膜芯片表面SMP吸附量最大，污染较为严重.膜片亲水性越强，吸附频率变化越小，抗污染能力越强.此外，GO含量为0.5wt%镀膜芯片表面的污染物结构比较疏松和柔软，其他膜表面的污染物结构较为坚硬和致密.

Pollution behavior of soluble microbial products on GO/PVDF hybrid membrane

In order to analyze the fouling characteristics of soluble microbial products (SMP) on GO/PVDF hybrid membrane, macro-fouling experiments were carried out, and the adsorption of SMP on the self-made coated chip and the structure change of the fouling layer were analyzed from the microscopic levels by the dissipative quartz microcrystalline balance (QCM-D). The results showed that membrane (GO=0.5wt%) had the highest pollution recovery rate (79.95%) with the strongest anti-fouling ability. QCM-D experiments showed that the adsorption capacity of SMP on the surface of membrane (GO=0wt%) coated chip was the largest and the fouling was serious. The stronger the hydrophilicity of membrane led to the smaller the change of adsorption frequency and the stronger the anti-fouling ability of membrane. Otherwise, it was also found that membrane (GO=0.5wt%) coated chips had loose and soft contaminant structures, and the surface of other membranes were hard and dense.