Israeli startup aims to save the planet from thirst using algae

Israeli startup aims to save the planet from thirst using algae EarthBeats, ImpactJournalism sparknews StoryofChange

Imagine if showering was a luxury, washing your floors a dirty secret, and shampooing the dog was illegal. It isn’t unthinkable that within our lifetimes, bath will be a dirty word as the world grows ever shorter of water — to drink, to wash and crucially, to irrigate crops. Enter the Israeli startup Aqwind, which has taken the lowest life-forms in the world, bacteria and algae, and harnessed them to a low-cost way to clean dirty water enough for irrigation.

Aqwind does exactly that, by taking natural processes and engineering them, explains its CEO and founder, Udi Leshem. “Natural systems can’t cope with concentrated sewage. We imitate the natural systems,” he says.Like Aqwind, other water treatment plants rely on bacteria to break down the organic matter in our sewage and are energy-heavy. But they need large amounts of energy to oxygenate the water for the bacteria to breathe.

And then there are the countries dumping sewage right into the sea, partly because they simply can’t afford to build all the wastewater plants they need. Could the system be matched with renewable energy resources such as solar panels? Theoretically yes, but it’s a hair complicated; or the methane could be used to make electricity, Leshem suggests.

The product of this process is water clean enough for agriculture, but isn’t recommended for drinking.Some aren’t necessarily what had been originally envisioned. The American project involves cows. A lot of cows, which are notoriously adding to GHG emissions with their various eructations. Aqwind’s systems are cleaning the water but to capture the methane emitted by the tons and tons and tons of cow output. No, that isn’t why they renamed the company Aqwind.

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