Patent ID: 6964740
Filing Date: 2005-11-15
Classification: B01D,B01F,B03D,C02F

Abstract:
1. A system for separating particles from a contaminated liquid stream by flotation, comprising: an apparatus for mixing the liquid with a separation enhancement additive and a gas, wherein the mixing apparatus comprises a reactor head having a gas injection port and a plurality of liquid ports configured to impart a spinning motion to the liquid as it passes to a downtube of the mixing apparatus, and wherein the liquid ports are configured to removably receive liquid flow restrictors, wherein the velocity and volume of the liquid passing through the mixing appartus can be altered; a pressure reducing device in fluid communication with an outlet of the mixing apparatus for creating bubble laden floccs in the liquid; a flotation tank having a bloom chamber and a separation chamber, the bloom chamber in fluid communication with an outlet of the pressure reducing device, the flotation tank being configured to direct the bubble laden floccs upwardly within the bloom chamber to an upper portion of the flotation tank and circulate the bubble laden floccs within the upper portion of the flotation tank until they rise to an upper surface of the flotation tank, and wherein the decontaminated liquid flows to a lower portion of the separation chamber of the flotation tank; and a mechanism for removing the floated contaminate floccs from the upper surface of the flotation tank.