| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for sludge treatment capable of preventing degradation in electrolytic efficiency and maintaining stable treatment performance by subjecting generated microbubbles to defoaming treatment and reducing excess sludge to a minimum amount while preventing deterioration of water treatment. <P>SOLUTION: In the method for sludge treatment which subjects the excess sludge A generated by the activated sludge treatment of the organic sludge to electrolytic decomposition treatment and returning the electrolytically treated sludge C subjected to the electrolytic decomposition treatment in an aeration tank to biologically decompose the sludge, an aeration tank 3 is disposed behind an electrolytic treatment tank 2 and the sludge in the form of a foam generated by the electrolytic treatment is crushed and defoamed and is then returned to the aeration tank 3. The prescribed amount of the defoamed sludge B subjected to the defoaming treatment is returned to the electrolytic treatment tank 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
