DRAINAGE DISPOSAL EQUIPMENT OF UPWARD FLOW SLUDGE BLANKET TYPE

摘要

PURPOSE:To constitute a liquid-gas separation mechanism of a simple structure in comparison with a conventional method so that outflow of a solid component is diminished in the treated water side as a disposal equipment in an upward flow type sludge blanket method for treating organic drainage by anaerobic microorganisms. CONSTITUTION:A screen 4 of a filament bundle is formed by parallel arranging the filament bundle in a state wherein it is overlapped in the thickness direction so that passage of a solid component is inhibited underwater and passage of gas is freely permitted in gas. This screen 4 is stretched in the upper part of a treatment tank 1 so that one part of water surface in the inside of the treatment tank is surrounded in a range over the water surface from below the water surface. A pulling means of treated water is provided in the water area surrounded by this screen 4. Thereby the solid components are filtered by the screen 4 add then treated water is pulled out.