Tuesday 8:30 AM
[Presentation PDF]

Room: Illinois

Co-Generation: A Viable Energy Alternative

Initial steps in the wastewater treatment process involve separation of solid inorganics, solid organics, and water. Anaerobic Digestion is a process that utilizes anaerobic bacteria under very controlled conditions to break down or digest the raw WOF to yield Biosolids and Biogas. Biogas is a mixture of Methane, Carbon Dioxide, Nitrogen, Water Vapor, and traces of other gases. The District utilizes biogas to produce electricity and heat in a Co-Generation facility. The facility consists of three 1 megawatt generators and equipment to recover waste heat. The Biogas is treated at the District to remove Hydrogen Sulfide by the chemical addition of Ferric Chloride to the Digesters. Siloxanes are removed in a mixed bed of activated charcoal just prior to the Biogas use in the engines. The Activated charcoal also further reduces the Hydrogen Sulfide to less than 30 ppm.

Moderator:  Dave Tucker


Larry McFall - Rock River Water Reclamation District

Larry McFall received a Bachelor of Science Degree from the Pittsburg State University, Pittsburg, Kansas in 1977.  Following post graduate work in polymer and analytical chemistry at PSU he was employed in the research and development of sealing systems for a sewer pipe manufacturer until becoming involved in wastewater treatment in 1995.  He has been employed by the Rock River Water Reclamation District since 1998 and has been the Plant Operations Manager since 2000.