PURIFYING UNIT FOR BATHTUB WATER

摘要

PROBLEM TO BE SOLVED: To make a purifying device usable continuously in a short period of time by sufficiently increasing the quantity of microorganisms in a short period of time after starting of the purifying device. SOLUTION: This purifying unit is constituted so as to have the purifying device 5 which purifies bathtub 1 water by the microorganisms living therein, a sterilizing device 4 which sterilizes the bathtub 1 water and a circulating pump 3 which circulates the bathtub 1 water so as to pass the water between the purifying device 5 and the sterilizing device 4. In such a case, the unit is provided with a supplying means for supplying nutrient components to the microorganisms.