Wastewater Treatment Igloos or "Poo-Gloos" for the Removal of Ammonia

Wastewater treatment lagoons are one of the most widespread treatment technologies in the United States and are suited for small to medium sized rural communities, animal feedlot operations, as well as some industries. Lagoons are effective at removing organic material and suspended solids, provided they are not overloaded. This technology is a device that enhances the ability of the lagoons to remove organic material (biological oxygen demand) as well as nitrogenous compounds like ammonia from the wastewater stream.

Benefits
Nitrogen occurs in wastewater in the form of ammonium and organic nitrogen. Ammonia in the primary cause of stench from lagoon systems and is not removed from the wastewater stream in lagoons because the growth of nitrifying bacteria is not encouraged. This technology advantageously provides a system for reducing the content of ammonia in water. The system includes a surface, substantially submerged in the water, having a bio-film of nitrifying bacteria. A bubble system creates aerobic conditions at the bio-film to allow the nitrifying bacteria to remove ammonia from the water. Typical lagoons are found treating domestic sewage, feedlot runoff, hog or chicken farms, food processing or dairy waste and storm water runoff. They are the primary form of wastewater treatment in developing countries.

Stage of Development
International publication (World Intellectual Property Organization): WO 2004/103511 A2
This technology has been demonstrated to work in proof-of-concept experiments. It is available for developmental research support/licensing under either exclusive or non-exclusive terms.

Inventor(s): Kraig Johnson, Lawrence Reaveley, Youngik Choi

Type of Offer: Licensing



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