FERMENTATION TANK OF AERATION/AGITATION TYPE

摘要

[PROBLEMS] To provide a fermentation tank of the aeration/agitation type by which aeration/agitation can be stably conducted even in a small liquid amount and the fermentation efficiency can be elevated. [MEANS FOR SOLVING PROBLEMS] A fermentation tank of the aeration/agitation type (10) wherein a fermentation liquor (S) is filled in a tank (11) having a cylindrical body (12), a cover (13) and a bottom (15) provided respectively above and below the body (12), and then the fermentation liquor (S) is aerated/agitated by rotating self-suction agitation blades (18) provided at the center of the bottom (15) of the tank (11). In this fermentation tank, an inverted cone-shaped slope (14) is continuously formed between the lower opening (12b) of the body (12) and the outer periphery (15b) of the bottom (15) of the tank (11). The apex angle (?) of the original cone of this inverted cone-shaped slope (14) is adjusted to, for example, 90°.