| 摘要 |
PURPOSE:To make an alcohol concentration and treating amount constant by controlling a circulation amount of a vent circulation type bioreactor feeding an aqueous liquid containing a vegetable treated material and/or a fruit treated material according to ethyl alcohol concentration of fermented liquid. CONSTITUTION:A ceramic beads 14 are packed into the upper part of a ceramic support 13 installed in a fermentation tank 11 and an aqueous solution of fermentation substrate is fed in quantitative amount by a feed pump 21. The fermentation tank is kept in definite temperature and air, etc., is fed in definite bent amount through a degerming filter 31 therein. An ethyl alcohol sensor 61 is inserted into a fermentation liquid storing part 15 and a circulating pump 52 is controlled through an arithmetic unit 62 and the circulation amount is increased or decreased according to ethyl alcohol concentration of a fermentation liquid. |
