| 摘要 |
PURPOSE:To effect efficient solid and liquid separation and miniaturize the subject device by conducting a mixture of raw water and flocculant into a cylindrical separation tank into a flocculation tank to permit the mixture to circulate slowly, then allowing flocks to grow actively on the inclined surface of separation elements with a final process to separate the solid and liquid in a precipitation/separation chamber. CONSTITUTION:In a solid and liquid separator consisting of a flocculation tank 4 with an open top, an inclined separation chamber 2 with a plurality of umbrella-like separation elements 13 and a precipitation/separation chamber, housed in a cylindrical container, a mixture of flocculant and raw water is fed into the flocculation tank 4 to allow its slow circulation and conversion into smoothly precipitating flocks. Next, flocks are allowed to grow and separate by friction resistance on the inclined surface of the separated elements 13, and the flocks flowing into the precipitation/ separation chamber 3 are further concentrated. These concentrated flocks are discharged from a sludge discharge pipe 22. In the meantime, the supernatant collected in the collection chamber 13 and the collection part of the separation elements is discharged through a supernatant discharge pipe 11. In this way, almost all of the mechanical operation part is eliminated and further efficient solid and liquid separation and miniaturization of the device are realized.
|
