CARRIER-SEPARATING AND WATER-COLLECTING MECHANISM OF WASTEWATER TREATMENT EQUIPMENT

摘要

A carrier-separating and liquid-collecting mechanism in a liquid-waste treatment apparatus having a treatment tank in which carriers having microorganisms immobilized thereon are suspended. The carrier-separating and liquid-collecting mechanism comprises a cylindrical screen (13) and a liquid-collecting means (14) disposed in the cylindrical screen. The cylindrical screen is provided in the treatment tank, such that the axis of the cylindrical screen extends in a substantially horizontal direction. The liquid-collecting means is a pipe or a gutter having liquid-collecting holes, which is capable of collecting a liquid at a plurality of positions in the cylindrical screen. The carrier-separating and liquid-collecting mechanism may further comprise a rotation mechanism for supporting the cylindrical screen and intermittently rotating the cylindrical screen on the axis thereof and a brush (18) which is fixed so as to be in parallel to the cylindrical screen and contact with the cylindrical screen. A surface of the cylindrical screen is covered with a bactericidal substance or an algicidal substance.