<；P>；PROBLEM TO BE SOLVED: To provide a device for activating microorganisms, capable of improving the activity of the microorganisms surely and in a good efficiency. <；P>；SOLUTION: This device for activating the microorganisms is provided by introducing microorganism-containing liquid containing the microorganisms into an activating vessel 1 housing string-formed poly vinylidene chloride fillers 14, incorporating micro nano bubbles in the microorganism-containing liquid in the activating vessel 1 with a micro nano bubble generator 3, also adding a micro nano bubble-generating assistant from an assistant vessel 11, and adding nutrient agent from a nutrient vessel 13 to activate the microorganisms in the microorganism-containing liquid. <；P>；COPYRIGHT: (C)2008,JPO&INPIT
