Patent ID: 6274044
Filing Date: 2001-08-14
Classification: B01D

Abstract:
A method for controlling foam caused by bacteria or other sources in a clarifier basin of a sewage treatment system, comprising:providing an influent well in a central region of the clarifier basin, the influent well being defined by an influent flocculation skirt surrounding an influent center pier column and drive cage, the skirt extending above and below the liquid surface in the clarifier basin so as to provide a closed barrier which essentially contains any foam which builds up on the surface of the liquid within the influent well, andduring operation of the clarifier basin, spraying the foam contained within the influent well, with either a bacteria-killing agent or an anti-foaming agent in order to control the foam,whereby foam in the clarifier basin is controlled from the relatively small area of the influent well, eliminating the need to actively control foam outside the influent well.