Netherlands has created a new process of cleaning sewage water that uses a recently discovered microorganism called anammox bacteria. It cuts out many of the bacteria normally needed, while producing methane as a byproduct, saving and giving energy at the same time.
One by-product of this [new] process is methane, which Kuenen proposes to harvest and use as fuel. The team calculates that, far from consuming energy, the process could generate 24 watt-hours per person per day. "This is about trying to make waste water treatment plants completely sustainable, in the sense that they could even produce energy, which is not the case in present treatment facilities," says Kuenen.
(image credit: Jonathan Hordle)
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