在膜生物反应器中使用聚丙烯中空纤维膜材料的膜组件，可以解决以往其它材料寿命短、强度低、易污染等问题。
The application of polypropylene membrane in MBR could resolve the problems of short life span and low strength that arc usually possessed by other material of membrane.
本课题的目的在于用海绵橡胶球对污染的管式膜进行清洗，以解决一些传统的清洗方法所不能解决的问题。
The paper is aimed to clean the fouled tubular membrane with rubber sponge balls in order to solve the problem which is not able to do with some traditional cleaning methods.
但膜污染依然是个较难解决的问题，制约了膜技术的应用。
But the membrane fouling is still a problem to solve, which limits the application of membrane technique.
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