Jan 02, 2007

Severn Trent Services Receives New U.S. Patent

Severn Trent Services has received U.S. Patent Number 7,153,434 for its technology related to a method for removing silica from water treatment adsorption media. Severn Trent Services has exclusive rights to this technology.

Severn Trent Services’ method is made to fix the problem of silica interference of arsenic and other contaminant treatment adsorption media. Silica, or silicon dioxide, exists naturally in many groundwater sources. When the groundwater passes through a bed of adsorption media, the silica present in the groundwater is believed to encapsulate the media particles and acts as a barrier to adsorption of other contaminants. The silica coating clogs the pores of the adsorption media and severely limits the ability of the media to remove contaminants from the water.