| 摘要 |
PROBLEM TO BE SOLVED: To provide a diffuser capable of suppressing the degradation of a sealing material provided between a porous body and gas piping. SOLUTION: The diffuser 1 is composed by holding the porous body 2 comprising ceramics by the gas piping 4 where an ozone-containing gas G flows through the sealing material 3, and is configured to discharge the ozone-containing gas G from the porous body 2 as air bubbles in the state of being immersed in water to be treated. A contact part 22 to be in contact with the sealing material 3 in the porous body 2 is provided with a closing layer 23 where many micropores in the contact part 22 are closed by glaze integrally fired with the porous body 2. COPYRIGHT: (C)2011,JPO&INPIT
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