| 초록 |
We investigated the effect of organic matters and role of microfiltration (MF), adsorption, and photo-oxidation in hybrid process of multi-channel ceramic microfiltration and photocatalyst oxidation for advanced drinking water treatment. The space between the outside of 7 channels ceramic membrane (0.4 μm) and the module inside was filled with polyethersulfone (PES) beads loaded with TiO2 powder. And UV with 352 nm was radiated from outside of acryl module. A quantity of humic acid and kaolin was dissolved. Resistance of membrane fouling (Rf) dramatically dropped with increased concentration of humic acid. Also, treatment efficiencies of turbidity and UV254 absorbance were very outstanding as 96.7~98.3% and 80.2~85.0% respectively. Then, Rf of experiment without UV irradiation (MF+TiO2) and only MF at humic acid of 4 mg/L were compared with the previous experiment with UV irradiation (MF+TiO2+UV). Rf increased as simplifying from process of MF+TiO2+UV to MF. The portions of treatment efficiency of UV254 were 70.8% for MF, 0.2% for TiO2 bead adsorption, and 10.1% for photo-oxidation, respectively. |
