Sewage treatment system with air jetting means

Details Sewage treatment system with air jetting means Sewage treatment system with air jetting means

1994-06-21

1996-09-24

Drodge, Joseph W.

Liquid purification or separation

With gas-liquid surface contact means

210151, 210219, 210220, 210299, B01D 3505

Patent

active

055587631

ABSTRACT:
A sewage treatment system is provided, for cleaning a sewage by filtering solid components in the swage through floating filter medium, wherein the filtration performance can be improved and the filtration cleaning can be performed efficiently. The sewage 18 is flowed into the treatment tank 12 in upward-flow, and filtered through the floating filter media layer 22 made of the meshy cylindrical floating filter medium 20 which have smaller specific gravity than the sewage 18. To wash floating filter medium 20, the air is jetted from the air jetting pipe 54 and the revolution flow is generated to scale solid components adhering to filter medium, and then the sewage 18, which has washed the floating filter medium 20, are discharged to the outside of the tank 12 while the air is jetted from the air jetting pipe 56 for full jetting to jet the floating filter media layer 22 in whole.

REFERENCES:
patent: 5387335 (1995-02-01), Iwai et al.

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