From toilet to turbine

This summer, D.C. Water will begin using something it has a lot of (yes, poop, although folks there call it “biosolids”) to generate something it needs: electricity. Key to the $470 million system is a unique process, the first of its kind in North America, created by Norwegian company Cambi. The process is called “thermal hydrolysis,” and the basic idea is to cook the biosolids into a recipe that methane-making microbes can’t resist, then burn the methane they produce to generate power. Here’s how the system will work. (Read: Making power and fine fertilizer from sewage)


Source: D.C. Water, Cambi | By Bonnie Berkowitz and Todd Lindeman/The Washington Post April 5, 2014
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