Manure becomes fuel

Three Portland groups team up to solve the manure problem at the country’s largest dairy.

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Bonneville Environmental Foundation, NW Natural and The Climate Trust are working together to cut down on methane-releasing cow waste at Threemile Canyon Farms – the largest dairy in the country.

The dairy’s new biodigester uses manure as fuel, producing gas to power farm equipment and nearby homes.

Biodigesters are an increasingly common way to handle large amounts of animal waste, food waste and waste water, but the new one at Threemile Canyon is unique, says Bill Eddie, director of Bonneville Environmental Foundation.

Designed by J-U-B Engineers Inc. of Boise, the biodigester is mainly comprised of 30,000 recycled car tires fashioned into a honeycomb design.

Read the full story at the Portland Tribune.

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