WARRENDALE, Pa., April 5, 2005 – The U.S. Patent and Trademark Office issued USFilter Corporation a key patent for its Midas® OCM (odor control media) activated carbon on February 22, 2005.  U.S. Patent No. 6,858,192 describes the activated carbon media used in conventional deep bed carbon adsorber applications to eliminate nuisance odors associated with hydrogen sulfide (H2S), VOCs and acidic gases from the gas stream being treated.  

Foul air flows through densely packed beds of Midas OCM to adsorb more than 99% of H2S from the air.  The media’s catalytic reaction to convert H2S directly to molecular sulfur increases the media’s H2S loading capacity, which is three to six times that of leading alkali carbons.  This results in the material lasting for at least two years before requiring replacement.

Compared to granular medias, the Midas OCM has a lower pressure drop, and will therefore save money in the power requirements to operate the odor control system.  Moreover, the non-alkali media does not have a dangerous pH problem when spent and, as it is not impregnated, it is easy to handle for loading, start-up and removal from the vessels.  Midas OCM also has a very high ignition temperature that reduces the risk of bed fires, and resists forming dust and fines that could clog filters. 

Midas OCM is successfully used in various applications throughout North America.  Municipal applications include pump stations, headworks, grit removal, clarification processes, storage tank ventilation, septic receiving stations and biosolids processes.  Midas OCM has also proven successful in the chemical industry, refinery applications and asphalt facilities.

For more information about the Midas OCM, please visit www.usfilter.com and search for key word “Midas.”