Patent ID: 6846468
Filing Date: 2005-01-25
Classification: A62D,B01J,C02F

Abstract:
1. An apparatus for decomposing bromate ions contained in a liquid, said apparatus comprising: a first section for generating therein a photocatalytic reaction to decompose said bromate ions; a photocatalyst adapted to be brought into contact with said liquid in said first section; a light source for irradiating said photocatalyst with a light ray having an energy that is not lower than that of a band gap of said photocatalyst such that said photocatalytic reaction is generated in said first section when said photocatalyst is in contact with said liquid; and a first device for adding an acid solution to said liquid before said liquid is brought into contact with said photocatalyst such that, prior to said irradiating, a pH of said liquid is made to be lower than an isoelectric point of said photocatalyst.