| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a sludge treating system by which sludge in a digestion tank can be efficiently stirred and maintenance is easy. <P>SOLUTION: The sludge treating system consists of the digestion tank 1 equipped with a stirring device 2 and the stirring device 2 is equipped with a circulation pipe arrangement 21 and a circulation pump 22. The circulation pipe arrangement 21 is equipped with an upper side circulation pipe 23 having an upper opening 23c which is located under a water surface of the digestion tank 1 and which makes the sludge in the tank flow-in or flow-out, a lower side circulation pipe 25 having a lower opening 25a which is located under the water surface of the digestion tank 1 and which makes the sludge in the tank flow-out or flow-in, a casing 24 of the circulation pump 22 which is connected with the upper side circulation pipe 23 and the lower side circulation pipe 25 at the outside of the digestion tank 1 and a discharge pipe 26 having a discharge port 26b which discharges the sludge from the casing 24 into the digestion tank 1 to produce a horizontal flow. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
