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Wastewater flushes away a river of wealth

(Climate News Network, 7 Feb 2020) Waste not, want not. Especially water. The wastewater that flows through the world’s sewers has value that could be recovered.

LONDON, 7 February, 2020 − Canadian scientists have identified a new source of energy, wealth and nourishment being lost every day in every city, town and municipality on the planet: a great river of wastewater.

What swirls down the kitchen and bathroom plugholes in every home, cascades into the town drains and flushes the city sewers contains enough latent energy to power almost 160 million households.

The flow of wasted water is big enough to irrigate up to an area equal to one-fifth of all the farmland in the European Union. And the nitrogen, phosphorus and potassium that sluices down the world’s drains would be enough to meet almost one-eighth of the world’s fertiliser demand, and notionally generate a revenue stream of more than $13 bn a year.

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Climate News Network, 7 Feb 2020: Wastewater flushes away a river of wealth