Billboard makes drinking water out of thin air

Billboard makes drinking water out of thin air

It is a billboard advertisement and water dispenser rolled into one.

Infographics journalist SIMON ANG checks out the first billboard in the world to make drinking water out of thin air.

To promote careers in engineering, a Peruvian university and its ad agency decided to showcase how technology can be used to solve real-world problems.

So the University of Engineering and Technology and ad agency Mayo DraftFCB tackled the shortage of running water in Lima, the capital of Peru.

With an annual rainfall of less than 2.5cm, locals in the town of Bujama often resort to drawing water from polluted wells.

In comparison, Singapore gets an average of 234cm a year.

With the university's know how and its agency's creativity, the team decided to harness Lima's high humidity of about 98 per cent (compared to Singapore's 84.2 per cent).

They worked with global outdoor media company Clear Channel to make a US$32,000 (S$39,600) billboard that uses reverse osmosis to produce drinking water out of air.

The billboard, which was set up earlier this year, can make about 100 litres a day, making hundreds of locals happy to get free, clean water.

HOW IT WORKS

Through a reverse osmosis system, the billboard is able to fill up a 20-litre tank.

1 - Air drawn from the atmosphere is fed through an air filter...

2 - ... and converted into water using a condenser unit.

3 - Water collected is then purified using carbon filters.

4 - Water is then stored in a cold tank. Users just turn on their taps to get the water.


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