OSMOSIS! In space (and on earth too!) water is drawn out of water by providing a salt or sugar solution leaving behind everything else! There are several companies working on technology to do this, including Bill Gates! What a crazy thought!
Here are a few stories of companies trying to make pee a drinkable option!
I may be wrong but I’m sure I read somewhere that in the international space station America and Russia treat their water differently. I’m not sure on the exact differences but I believe using a filtration and distillation process is used to treat urine and convert it into water. this will filter out any toxins and impurities and eventually make it more cleaner.
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