| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a simple excess sludge treatment apparatus capable of reducing the production amount of excess sludge without doing damage to environment, and an activated sludge treatment system using it. <P>SOLUTION: The excess sludge treatment apparatus 8a for treating excess sludge produced in an activated sludge treatment apparatus has an excess sludge treatment tank 9 into which excess sludge is introduced, the grinding parts 12 and 13 provided in the excess sludge treatment tank 9 and grinding excess sludge to activate the same, a first circulation part 14 for extracting the excess sludge 10 in the excess sludge treatment tank 9 to send out the extracted sludge to the grinding parts 12 and 13 while mixing air with the sludge, a second circulation part 18 for extracting the excess sludge 10 activated in the excess sludge treatment tank 9 to send out the same to the activated sludge treatment apparatus, a temperature detecting part 17 for detecting the temperature of the excess sludge 10 activated in the excess sludge treatment tank 9 and a flow rate control part 6 for regulating the introducing amount of the excess sludge into the excess sludge treatment tank 9 on the basis of the detection signal of the temperature detecting part 17. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
