| abstract |
In a conventional method for supplying oxygen-enriched gas to an aquarium for fish culture, it is difficult to adjust the oxygen concentration because oxygen generated by a chemical reaction of the compound is used as an oxygen supply source. Such complicated maintenance was required. A method of passing a gas to be treated through an oxygen-enriched film is used as an oxygen supply means, so that the oxygen concentration can be easily adjusted, and complicated maintenance is not required even during continuous use. [Selection diagram] Fig. 1 |