From toilet to turbine (or poop to power)

D.C. Water is 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. Click to read Katherine Shaver's "Poop, flush, power!" story. Here’s how the system works:

Source: D.C. Water and Sewer Authority, Cambi | By Bonnie Berkowitz and Todd Lindeman/The Washington Post October 7, 2015
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