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The United States of America as represented by the United States Environmental Protection Agency
| The United States of America as represented by the United States Environmental Protection Agency Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20100300964 | Biological filter for oxidizing ammonia in drinking water treatment - A process for treatment of water to convert ammonia to nitrate including: feeding water containing dissolved ammonia, as an influent introducing water to be treated, into a packed column containing filter media as packing; introducing air through a diffuser at the bottom of the packed column to maintain the water saturated with oxygen throughout the packed column; establishing colonies of bacteria converting ammonia to nitrate within the column; and removing an ammonia-free and nitrite-fee effluent from the column. | 12-02-2010 |
| 20090301859 | PROCESS USING COMPACT EMBEDDED ELECTRON INDUCED OZONATION AND ACTIVATION OF NANOSTRUCTURED TITANIUM DIOXIDE PHOTOCATALYST FOR PHOTOCATALYTIC OXIDATION - A reactor produces a surface corona for emitting UV light and for the production of ozone by passing air or oxygen through the surface corona. The emitted UV light activates a photocatalyst coated on a surface facing a surface with embedded electrodes which generate the surface corona. The photocatalyst is a thin film of nanoparticle TiO | 12-10-2009 |