| 摘要 |
PROBLEM TO BE SOLVED: To provide a water supply method and a water supply system capable of washing out already adhered stain and also preventing recurrence of stain without using chemicals, without increasing power consumption, moreover, almost without modifying existing equipment.SOLUTION: After Tadanoumi ceramic is immersed in a storage part which is an upper water receiver tank 11 and storage water is influenced by the Tadanoumi ceramic, the water is supplied into a urinal 12 and thus urinary calculus adhered in the urinal 12 is removed. In this case, urea-based odor generated from the urinal 12 is also removed. |
