Patent ID: 7837906
Filing Date: 2010-11-23
Classification: B01D,E04G,Y10T

Abstract:
1. A method of sealing an air plenum box of an aeration basin of a liquid treatment facility wherein the air plenum box is positioned underneath an aeration tank with a plurality of openings coupling the aeration tank and the air plenum box so that pressurized air can be supplied from the air plenum box into the aeration tank via the plurality of openings, the method comprising: introducing a sealant into the air plenum box; sealing the plurality of openings between the aeration tank and the air plenum box; isolating the air plenum box so as to substantially inhibit air from entering or leaving the air plenum box; and introducing a positive pressure into the air plenum box of a pressure selected so that cracks between the air plenum box and the surrounding environment are also pressurized to inhibit entry of pressurized gasses from the surrounding environment from entering the air plenum box during the pressurization process via the cracks and also so that the sealant is urged into the cracks by the pressure.