| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent generation of malodor and deterioration of the quality of drainage treatment water at lowering of inflow water quantity and inflow garbage quantity with relatively simple control at low cost. <P>SOLUTION: In the disposer drainage treatment system, drainage containing crushed garbage from a disposer is once stored in a solid/liquid separation tank through a relay pump tank. The precipitate is transmitted to a solid/liquid separation apparatus and separated into a solid part and a liquid part. The liquid part is returned to the solid/liquid separation tank, and the supernatant of the solid/liquid separation tank is applied to an aeration treatment in a treatment tank. The sludge contained in the treatment water which is aerated is precipitated in a precipitation/separation tank. The supernatant is discharged to sewage or the like. The precipitated sludge is sent back to the separation tank and transmitted to the separation apparatus together with the crushed garbage, then recovered. The inflow water quantity and the inflow garbage quantity are estimated based on the number of motions of the relay pump tank. When the inflow water quantity and the inflow garbage quantity are lowered, the quantity of returning sludge from the precipitation/separation tank to the separation tank is increased and the transmitting quantity thereof from the separation tank to the separation apparatus is reduced. <P>COPYRIGHT: (C)2004,JPO</p> |
