EnvirotecMagazine.com: Vast amounts of valuable energy, nutrients, water lost in world’s fast-rising wastewater streams, says study

The energy embedded in wastewater, meanwhile, could provide electricity to 158 million households – roughly the number of households in the USA and Mexico combined.

Today, the volume of wastewater roughly equals the annual discharge from the Ganges River in India. By the mid-2030s, it will roughly equal the annual volume flowing through the St. Lawrence River, which drains North America’s five Great Lakes.

Among major nutrients, 16.6 million metric tonnes of nitrogen are embedded in wastewater produced worldwide annually, together with 3 million metric tonnes of phosphorus and 6.3 million metric tonnes of potassium. Theoretically, full recovery of these nutrients from wastewater could offset 13.4% of global agricultural demand for them.

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