A method and apparatus creates gas-enriched fluid that is used to treat wastewater. In one embodiment, the wastewater is withdrawn from a supply of wastewater to be treated, and the wastewater is delivered in an atomized manner to a vessel pressurized with gas to form gas-enriched wastewater. The gas-enriched...http://www.google.de/patents/US7008535?utm_source=gb-gplus-sharePatent US7008535 - Apparatus for oxygenating wastewater
