A system and method for reducing the content of ammonia in water provides a submerged surface having a growth of nitrifying bacteria thereon. An aeration system creates air bubbles that travel along the surface as they rise to create aerobic conditions on the surface, and to circulate the water along...http://www.google.es/patents/US20040245173?utm_source=gb-gplus-sharePatente US20040245173 - Submerged ammonia removal system and method
Número de solicitud: 10/846,828 Número de publicación: US 2004/0245173 A1 Fecha de presentación: 13 May 2004 Patente emitida: US7008539 ( Fecha de emisión 7 Mar 2006)