Development of Photocatalytic Plate for Water Treatment Using Titanium Oxide

The photocatalyst absorbs ultraviolet rays to generate active oxygen and decompose organic matter. In this paper, focusing on titanium oxide with high active capacity, we developed photocatalytic plate for water treatment. The titanium oxide film formed on the plate surface has adhesive strength that does not peel off even at a water pressure of 2.6 times at the time of the river flooding. The plate was irradiated with sunlight and water treatment performance was evaluated by Chemical Oxygen Demand(COD). As a result, it was confirmed that 125L/m2 of water treatment was possible in 12 hours under sunlight ultraviolet irradiation. From this, it was found that the plate produced has water treatment performance equivalent to the pretreatment with chlorine required for making tap water in the water purification plant.