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Fine building


We’ve seen seaweed make lemonade, and AI harnessed in the quest for the perfect beer.

Now a San Francisco-based startup is looking to pull pints from treated wastewater. Buildings use only 14% of drinkable water, but generally don’t re-use it.

The team used the recycled greywater – water with no faecal contamination – from a high-rise apartment building.

The water was treated on-site through ultrafiltration, before being disinfected with ultraviolet light and chlorine.

Finally, it was filtered with activated carbon. Making it cleaner than some drinking water.

Over 7,500 litres found its way to a local brewery, which used it to make 7,000 cans of beer.

When it goes off, it could be used to generate heat and electricity.

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