| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sludge treatment apparatus capable of proceeding a well-balanced self oxidation-oxidation-nitrification-denitrification reaction of sludge in a balanced manner in parallel by supplying chemicals to a biological treatment tank, and obtaining a stable sludge reduction ratio by accelerating the whole decomposition speed of sludge. <P>SOLUTION: The sludge treatment apparatus 20 performs biological treatment by crushing excess sludge by a reconverting-to-substrate means, having nitrogen content less than a given value, generated from an active sludge treatment apparatus 10 for purifying waste water. The sludge treatment apparatus 20 comprises a sludge treatment part 30 and a chemical charge part 50, the sludge treatment part 30 is composed of a biological treatment tank 43 and the reconverting-to-substrate means 33, and the biological treatment tank 43 is provided with an agitation means 32 uniformly agitating sludge, a membrane separation means 36 condensing sludge, and an aeration means 37 under the membrane separation means 36. The chemical charge part 50 has a chemical tank 51 and a chemical transfer pipe 53 transferring the chemical, and the chemical transfer pipe 53 transfers the chemical to the sludge treatment part 30. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
