December 17, 2010
All of us at PC Construction understand the uniqueness associated with the recently constructed PurposeEnergy Digester project. The innovative qualities of this project provide numerous renewable energy benefits to New England’s largest craft brewery, Magic Hat Brewery. And last week, I was proud to see this project be recognized for outstanding quality of work and effort by the AGC of Vermont with a 2010 Best Builders Award in the New Green Construction category.
The major components of the project included a Flow Equalization System, Mechanical Building to house the process equipment and piping, a patented Anaerobic Digester designed for brewery waste, and a Cogeneration System. This new digester allows PurposeEnergy, Inc. to use the organic waste streams produced by Magic Hat Brewery to generate biogas. The biogas is then utilized by the brewery’s steam boilers and/or PurposeEnergy’s cogeneration plant.
The brewery’s three waste streams; spent grain, high strength wastewater, and low strength wastewater (gray water), were previously disposed of through off-site trucking and surcharges at a local municipal waste treatment facility. Now these waste by-products are diverted to the anaerobic digester at the PurposeEnergy biogas facility. PurposeEnergy’s patented Biphase Orbicular BiodigesterTM (which we affectionately call BOB), specifically designed for brewery by-products, enables the conversion of high solids content brewery waste into carbon neutral, renewable biogas. Additionally, this system is designed to utilize the waste heat from the generator’s exhaust, coolant, and engine oil to heat the digester and preheat the water used in the brewing process.
This is an incredible project, one I was proud to be involved with. I’d especially like to recognize the PC Construction team for this recognition: Senior Project Manager Chet Layman and Project Superintendent Jody Atkins, as well as their crew – Kevin Brodeur, Nathan Cameron, Brian Chaffee, Wayne Combs, Shane Gray, Paul Lincolnhunt, Gary Morin, Jeff Reynolds, Justin Reynolds, Cody Smith, Arnie Brown, Larry Dopp, Peter Sweeney, and Stacy Tomko.

Andrew Martin, Jody Atkins, Chet Layman, and Jeff Garner accept the AGC of Vermont Best Builders Award for PC Construction's work on the PurposeEnergy Digester project