| 摘要 |
PURPOSE:To filter and biologically clean the hot water in a bathtub and keep the hot water clean. CONSTITUTION:The inside of a vessel 11 close to its outlet 15 is partitioned by a porous membrane member 17, and a filter medium consisting of minute glass grains 18 is placed on the member 17. Porous ceramic balls 19 are filled between the member 17 and the outlet 15. The ceramic ball 19 contains granite porphyry, and aerobic bacteria (nitrification bacteria) are propagated on the ball, The scales, refuse, etc., are filtered off, the ammonia is nitrified by the nitrification bacteria propagating on the ball 19, and the hot water is cleaned by granite porphyry to such an quality approximating a clean hot spring water. |
