| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To raise a sludge volume reducing ratio by performing efficient digestion by concentrating digested sludge of an organic waste solution, solubilizing the digested sludge while returning the concentrated sludge to an anaerobic digestion tank and returning the solubilized sludge to the anaerobic digestion tank. <P>SOLUTION: The concentrated sludge is mixed with the solubilized sludge at a suction side of a transfer pump 4 for transferring the concentrated sludge and is adjusted with respect to its concentration and then is returned to the anaerobic digestion tank 1. While performing efficient concentration by raising a concentration ratio of the digested sludge, the concentrated sludge is smoothly returned and further the returned concentrated sludge can be sufficiently dispersed in the anaerobic digestion tank to perform efficient digestion. Thus, the sludge volume reducing ratio can be raised. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
