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In this study,we investigated the effect of organic or inorganic materials on membrane fouling in hybrid process of ceramic UF and photocatalyst oxidation for drinking water treatment.In the space between the tubular ceramic membrane and the module we packed polypropylene beads coated with TiO2 powder by CVD (chemical vapor deposition) method.Instead of natural organic matters and fine inorganic particles in natural water source,a quantity of hnmic acid and kaolin was dissolved in distilled water and utilized here as synthetic water.Kaolin was fixed at 30 mg/L and humic acid was changed from 2 to 10 mg/L at experiment of organic matters effect.