Sources: EnviTec Biogas USA Inc., Beaverton, Ore.; CP staff
Collins Precast LLC, a PCI-certified architectural and structural producer based in Iroquois, S.D., has delivered wall elements for three prestressed concrete tanks anchoring the largest EnviTec Biogas USA anaerobic digestion plant to date. Built in partnership with SJI Renewable Energy Ventures, the South Dakota facility processes 300,000-plus gallons of manure daily from 9,500 dairy cows, extracting and purifying methane feedstock for annual delivery of grid-grade natural gas equivalent to 177 million Btu.
“Our concrete tank design is the first of its kind to be approved in South Dakota,” says Timothy Logan, president of EnviTec Biogas Construction LLC, a recently formed subsidiary under the plant developer. “This facility is a true win-win for both business and the environment. Not only does it convert organic dairy waste into renewable biogas, but it also helps reduce the overall carbon footprint of dairy farming.”
“This marks the fifth of a total of 15 biogas plants we are developing for our client, a leading company in renewable energy and sustainable solutions,” adds EnviroTec Biogas USA CEO Lars von Lehmden, noting that eight of the plants are on farms operated by a top diversified agribusiness in the U.S.
The South Dakota project joins a roster of more than 700 biogas facilities in 18 countries that EnviTec Biogas AG of Lohne, Germany has completed since 2002, their feedstocks ranging from dairy manure to food waste. Such facilities have garnered increasing scrutiny as government agencies track principal greenhouse gas emissions sources: agriculture, building operations, industry and transportation. Methane emissions reduction or capture is a regulator priority as the gas exhibits up to 25 times the impact of carbon dioxide, the most prevalent GHG.
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