UF膜组件的有机污染及清洗

近年来，超滤（UF）膜组件的污染问题主要集中在有机物污染的范围。利用几种化学药剂对聚砜超滤膜有机污染造成的堵塞的清洗方式进行了试验研究，研究了UF件的有机污染行为及膜组件污染物的去除。实验证明NaClO，H2O2和NaOH对于UF膜的有机污染去除都有一定的效果，其中H2O2的去除效果最好。控制原水的PH值有利于减轻膜污染。同时，以NaOH／NaClO及NaOH／H2O2水溶液相结合的方式对于膜的蛋白质污染的去除也有很好的效果，能够使超滤膜的渗透水通量恢复到初始值。同时还对UF膜的有机污染形成基理进行了分析。

Organic Fouling and Cleaning of UF Membrane

In recent years, the problem of fouling on UF membrane mainly centers on the aspect of organic fouling. The cleaning methods of jam caused by fouling of polysulfone UF membrane, the behavior of organic fouling and the elimination of contamination are studied using several chemicals. This experiment proves that NaClO, H2O2 and NaOH all have some effect on the removing organic fouling of UF membrane, of which the H2O2 has the best effect. Controlling the pH value of raw water can decrease the organic fouling of UF membrane. At the same time, a very good result can be gained in the elimination of organic fouling in a way of combining the water solution of NaOH/NaClO and NaOH/H2O2, which makes the infiltration water flux of UF membrane being restored to its initial value. Moreover, the mechanism of organic fouling formation of UF membrane is analyzed.