| 摘要 |
PURPOSE:To make sterilization and deodorization practicable efficiently by supplying oxygen to water sterilized with a bactericidal lamp and disinfected with salt and at the same time, repeating circulation of the whole quantity of filtered water while settling it with sand. CONSTITUTION:Water poured through a water intake port 12 is sterilized with a bactericidal lamp and disinfected with salt of a salt box 31. Then oxygen is supplied to the water by means of a pump 34 and means 24-26 to activate it. Simultaneously, the whole quantity of water passing through a filter 22 is circulated while it is settled with pebbles water-washed 6 obtained by cracking stones soaked in nitric acid for about 24hr. As a result, sterilization and deodorization can be performed efficiently.
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