Access to clean water is a huge problem in the developing world, and one that’s expected to worsen in coming years. Water purifiers are the obvious answer, but they tend to be expensive and contain a number of moving parts prone to breakdown with daily use. A new concept design from Cole Dobson may help to change that.
The low-tech Solar Water Purifier employs a simple evaporative system to remove particulates and kill sickness-casing microbes. Dirty water gets poured into the first tray, on top, where solar heat causes the water to evaporate and condense on the cover of the purifier. From there, the clean water drips down the sides of the device, where it enters a second compartment. When all dirty water has condensed (and presumably only dirt and residue remains) the user simply removes the first tray and allows the UV rays of the sun to further purify the particulate-free water.
This isn’t the first solar water purifier we’ve seen created with the developing world in mind. But no electricity, no moving parts and a simple mechanism for purification puts this concept in a league of its own. Ecofriend speculates that this combination of factors could put the Solar Water Purifier well within the reach of those who need it most–that is, if this concept finds a company or charitable organization interested in bringing it to the production line.