Abstract:

Membrane fouling is the key factor of restricting the application of membrane bioreactor (MBR). Running pressure was paid attention on. When the membrane flux is 10 L/(h·m²), the running pressure is lower than 3.73×10⁴ Pa, compared with the different reducing membrane fouling measures: water washing could resume 70% pressure, the running pressure ascended slower when the membrane is inclination at 50 degree, and the best position is 20 cm on the base of the container. In the end, analysis and calculation of the composition of total membrane resistance are given.

Key words: membrane bioreactor, polyvinylidene difluoride, membrane fouling, position of membrane

摘要：

膜污染是制约膜生物反应器应用的关键因素，通过实验分析了聚偏氟乙烯膜生物反应器运行操作压力的变化。膜通量为10L/(h.m2)时，操作压力在3.73×104Pa以下，比较了降低膜污染的不同方法:水力清洗能恢复操作压力77%；倾斜50°放置，压力增长缓慢；膜组件离容器底部最佳位置为20cm。计算了膜总阻力的组成。

关键词: 膜生物反应器, 聚偏氟乙烯, 膜污染, 膜位置

CLC Number: 

• X703.2