| 摘要 |
PROBLEM TO BE SOLVED: To stably feed medicinal solution while suppressing affection by ambient temperature and weather, and to thereby stably supply safe treatment water.SOLUTION: A reservoir feeding device 10 of medicinal solution includes: a reservoir tank 14 having a roof plate that covers the whole upper side; and a sub tank 16, a circulation pump 20, and a feed pump 22 that are intensively disposed on the roof plate. In the sub tank 16, a medicinal solution LM is fed from the reservoir tank 14 in full-time by the circulation pump 20. A quantity that exceeds a top edge of an overflow pipe 18 is returned to the reservoir tank 14, and thereby a liquid surface height of the medicinal solution LM is held constant. Thereby, lift of the feed pump 22 that feeds the medicinal solution LM from the sub tank 16 to an outside is kept constant, and a supply amount of the medicinal solution LM becomes stable. Therefore, while immersion of rain water or the like into the reservoir tank 14 is prevented by the roof plate, the medicinal solution LM can be stably fed, and safe treatment water can be stably supplied. |
