From cow dung to drinking water

Deep in the UAE desert a farm has been working on a secret, udderly unbelievable project.

But now farm chiefs are ready to reveal their clandestine activities - they are making 100 per cent drinkable water from… cow pats. And 7DAYS was more than happy to milk the occasion when asked along to find out more.

It’s now in black and white - water made from cow dung is actually cleaner than the water that comes out of our taps and just as good for us as the bottled water we drink, according to project bosses.

Until now they have kept the malodorous methods of reusing 100 per cent of the water produced from cow waste under wraps.

But they’ve lifted the lid, revealing the water filtration system at Al Ain Dairy Farm produces 300 cubic metres of fresh treated water from cow waste every day, which is pumped back into the farm.

Half of the ‘new’ water is then used for irrigation, and the other half to keep the cows cool.

Experts at the diary say it is safe enough to drink and, if the right minerals were added, could make its way onto supermarket shelves in the UAE one day.

Several times a day, excrement produced by the 2,500 cows on the farm is collected, and solids and liquids are separated.
The solids are either dumped by the municipality, or sold as fertiliser.

The liquid goes through three processes:
pre-filtration, which removes bigger particles from the water; ultra-filtration, which eliminates bacteria and viruses; and reverse osmosis, which desalinates the water and gets rid of dissolved contaminants.

The scorching summers are uncomfortable for the cows, brought to the UAE from Australia and Holland, and experiments carried have shown their productivity drops when temperatures increase.