| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of preventing floating of a filler which can suppress adhesion of bubbles to the filler, without significant impairment of the initial growth of microorganisms, for a long period, a method of start-up of a water treatment apparatus, a water treatment apparatus and a digestion tank.SOLUTION: A method of preventing floating of a filler comprises bringing a synthetic resin-made filler into contact with an antifoaming agent of a cloud point of 8°C or lower. |
