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- Title
Roles of adsorption and photo-oxidation in hybrid water treatment process of tubular carbon fiber ultrafiltration and PP beads with UV irradiation and water back-flushing.
- Authors
Yua Park; Jin Yong Park
- Abstract
Roles of ultrafiltration, adsorption and photo-oxidation on membrane fouling and treatment efficiency were observed in a hybrid water treatment process of tubular carbon fiber ultrafiltration (UF) and polypropylene (PP) beads with UV irradiation and water back-flushing. The synthetic feed was prepared with humic acid (HA) and kaolin. The synthetic feed flowed inside the UF membrane, and the permeated contacted the PP beads fluidized in the gap of the membrane and the acryl module case. The membrane fouling resistance of (UF+PP) process showed the minimum, and increased dramatically from (UF+UV) to UF process. The portions of UF and photo-oxidation by the PP beads and UV for turbidity treatment were 99.5% and 0.2%, respectively; however, the portions of UF and adsorption for dissolved organic matters (DOM) treatment were 57.1% and 5.4%. It means that UF was dominant for turbid matter treatment, and UF and adsorption had important roles for DOM treatment. The membrane fouling resistance increased dramatically as increasing HA concentration, and the maximum total permeated volume was acquired at HA 2 mg/L. The treatment efficiency of turbidity was almost constant, independent of HA concentration; however, that of DOM showed the maximal 69.3% at HA 6 mg/L. It proved that DOM could play a dominant role for membrane fouling.
- Subjects
ULTRAFILTRATION; WATER purification; CARBON fibers; DISSOLVED organic matter; ADSORPTION (Chemistry); BEADS
- Publication
Desalination & Water Treatment, 2017, Vol 61, p20
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2017.1740