| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device for feeding sewage from an initial sedimentation basin to a biological reaction tank, capable of evenly and highly accurately regulating the feeding amount of sewage to a plurality of systems by eliminating pressure drop occurring due to a screen and the like installed to the reaction tank. <P>SOLUTION: The water channel 7 of the outflow side in the initial sedimentation basin 1, and the water channel 10 of the inflow side in the biological reaction tank 5 installed downstream of the initial sedimentation basin 1 are set at the same height position as each other. The sewage in the water channel 7 of the outflow side in the initial sedimentation basin 1 is pumped up by a pneumatic water pumping device A through a water conduit 8, and is fed to the water channel 10 of the inflow side in the biological reaction tank 5 by: providing the inflow port 8a of a pneumatic water pumping device A on the water channel 7; and further providing the outflow port 8d of the device A connected to the water channel 10 of the inflow side in the tank 5 through the water conduit 8 provided with the inflow port 8a of the device A, a descending part 8b and an ascending part 8c. <P>COPYRIGHT: (C)2012,JPO&INPIT |
