| 摘要 |
<p>PURPOSE:To enhance the utilization efficiency of an air blower of an aeration device, and to reduce the cost of facilities and the running cost by constituting the purifying device for sewage of an intermittent aeration type so that an aerating operation by the aeration device provided in an aeration tank can be executed intermittently. CONSTITUTION:A discharge port of an air blower 30 of an aeration device 3 provided in an aeration tank 2 is connected to a feed air tube 31 allowed to communicate with a diffusing tube 32 provided in the aeration tank 2, and the feed air tube 31 allowed to communicate with an air motor 7 for driving a stirring device 6 provided in the aeration tank 2, and control valves V1, V2 subjected to opening/closing control are connected and provided in those feed air tubes 31, respectively.</p> |
