DEODORIZATION METHOD

PROBLEM TO BE SOLVED: To provide a deodorization method which decomposes a malodorous component surely under a safe and low ozone level in deodorization by decomposing the malodorous component in treatment air with active oxygen generated by the ozone decomposition. SOLUTION: In the deodorization apparatus 3 that deodorizes the malodorous component in the treatment air with active oxygen generated by decomposing ozone with an ozone decomposition catalyst, it is characterized by arranging an ozone generator 10, an ozone decomposition catalyst filter 11 and an activated carbon filter 21 to which the basic chemical is attached in order from the upstream side to the flowing direction of the treatment air. Further it is characterized in that the ozone level at the exit side of the ozone decomposition catalyst filter 11 is from 10 volume ppb or more to less than 50 volume ppb and the ozone level at the exit side of the activated carbon filter 21 is 10 volume ppb (0.01 ppm) or less. COPYRIGHT: (C)2008,JPO&INPIT