CULTURE SOLUTION CIRCULATION FEEDER, STERILIZATION DEVICE FOR CULTURE SOLUTION CIRCULATION SUPPLY AND CULTURE SOLUTION CIRCULATION SUPPLY METHOD

摘要

PROBLEM TO BE SOLVED: To provide a culture solution circulation feeder for performing sterilization at a low cost without spoiling nutriment when circulating and using culture solution.;SOLUTION: This culture solution circulation feeder has a culture solution tank 2 for holding culture solution to be supplied to a cultivation bed 1, a supply mechanism to supply culture solution from the culture solution tank 2 to the cultivation bed 1, a processing tank 4 which holds to sterilize surplus culture solution supplied from the culture solution tank 2 to the cultivation bed 1, and a sterilization member containing an antibacterial activity metal compound comprising photocatalyst capable of demonstrating antibacterial properties with photoirradiation. Furthermore, the device has a sterilization device 5 which can sterilize the surplus culture solution held in the processing tank 4 with the sterilization member, light source arranged near the sterilization device 5 and exciting the sterilization member, a circulation mechanism for circulating surplus culture solution between the processing tank 4 and the sterilization device 5, and a processed tank 6 which moves processed culture solution sterilized with the sterilization device 5 from the processing tank 4 and holds the solution.;COPYRIGHT: (C)2007,JPO&INPIT