| 摘要 |
<p>PURPOSE:To enhance the purification capacity of a slurry like org. waste solution to a large extent, in aerating and digesting said org. waste solution by a microorganism, by supplying air in the lower part of the waste solution and forcibly recirculating said waste water while introducting air thereinto. CONSTITUTION:A slurry like org. waste solution is charged in a sludge forming tank 12 and digested under aeration by an aerobic bacteria group and a facultative anaerobe group. At this time, air bubbles having a size suitable for aeration are injected into the waste solution from the nozzles 14 of an air pipe 13 while the recirculation pump 17 in a forcible recirculation pipeline 18 is started to recirculate the waste solution over the outside and inside of the tank 12 through the suction port 16 and the discharge port 15 of the pipeline 18. At this time, the opening degree regulation valve 19 of the pipeline 18 is opened to a proper opening amount and the open air is blown into the waste solution from an open air sucking port 20 to be mixed therein.</p> |
