I think that's an awesome idea, as its very simple. If adding unclean water or some other modification could produce enough water to sustain you, I'd have solar still supplies in my BoB. Let me know if you try any of your ideas out!I've always liked the concept of the in-ground solar still but haven't actually tested it. I've used the simple version where you pull several branches together and cover them with a clear plastic bag and found that it produces very little water. I live in what is classified as a High Dessert so finding water will be important and I should really be spending more time learning this.
But... I was wondering: Since the concept is to put green leaves in the still and draw out their moisture through evaporation, then in theory, I should be able to place a container with unclean water in the still and gain a larger volume of good water as the unclean water evaporates. Has anyone tried this? I've heard it's been done with saltwater to get fresh water. And... instead of having to dig.... I've often considered adding an old fish tank to the trailer and using that instead. It's lightweight, portable... but fragile. I could fill the bottom with plants or unclean water, place the container for fresh water in it, and then cover it with plastic. The clear sides should give me more sunlight and increase the evaporation rate.
For those that don't know what a solar still is... here's a pic:
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