Digester Contaminants : Whitley Burchett

Digester Contaminants: What They Are & How to Remove Them
(Presented at CWEA San Francisco Bay Section Professional Development Seminar, April 2006)

Tom Hendrey: Whitley, Burchett & Associates

ABSTRACT

Digester gas contains many contaminants that will adversely affect beneficial uses for digester gas. This presentation gave a background of what digester gas contaminants are, why they need to be removed, and how to remove them. Emphasis wais placed on removal of Siloxanes, Hydrogen Sulfide, and water. Siloxanes are the contaminant causing the most significant problems for beneficial use of digester gas. Details on what they are, where they come from, and how then end up in digester gas were given. Finally, a review of the technology available to remove Siloxanes was presented.