| 摘要 |
PROBLEM TO BE SOLVED: To provide a spiral type gas-liquid contact membrane module which is capable of suppressing the generation of particles, allows the production of a clean gaseous solution and is highly reliable. SOLUTION: This spiral type gas-liquid contact membrane module is constituted by extending one end of a gas supply pipe 3 as a gas supply port 14 to the outside of a housing 1 and welding the gas supply pipe 3 and an inlet side cap member 1a by a welding rod 6 to provide liquid-tightly sealing. Gaseous ozone OG is directly supplied from the gas supply port 14 into the gas supply pipe 3.
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