| 摘要 |
PROBLEM TO BE SOLVED: To provide a sludge digestion tank capable of defoaming without adding a large amount of defoaming agent, and a defoaming method of the same.SOLUTION: In a sludge digestion tank where gas containing oxygen is supplied from an ejector 6 to the organic sludge inside a digestion tank 1 to reduce volume, a part of the sludge in the digestion tank 1 is drawn out to be supplied to the ejector 6 from a line 16. A part of the sludge in the line 16 is supplied to a spray nozzle 14 via a spray tube 13, which is sprayed in the digestion tank 1 for defoaming. |
