Valuable energy, nutrients, water lost in fast-rising streams

Wastewater volumes are increasing quickly, with a projected rise of roughly 24 percent by 2030 and 51 percent by 2050.

UN varsity foresees 24% wastewater increase by 2030

Vast amounts of valuable energy, agricultural nutrients, and water could potentially be recovered from the world’s fast-rising volume of municipal wastewater, according to a new study by UN University’s Canadian-based Institute for Water, Environment and Health (UNU-INWEH).

Today, some 380 billion cubic meters (m3 = 1000 litres) of wastewater are produced annually worldwide – five times the amount of water passing over Niagara Falls annually – enough to fill Africa’s Lake Victoria in roughly seven years, Lake Ontario in four, and Lake Geneva in less than three months.

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