Solar powered desalination prototype invented

Millie HennickAugust 8, 2018156

Solar powered desalination prototype invented

Global warming is creating rising sea levels in many countries already. Imagine living in a place where your drinking water must be trucked in because the wells in town were so depleted that seawater leached into the freshwater supply. In many coastal areas, this is an everyday occurrence. A team of students and a professor at the University of Michigan along with colleagues at the University of Sonora in Mexico have developed a prototype single-stage distillation unit powered by solar power that desalinates water in these areas.

Prototype unit distills five truckloads of water a day

The prototype unit can distill 150 liters per day and can be scaled up to 3,000 liters of water a day. That’s equal to five truckloads of fresh water and a much more environmentally responsible solution to the problem of insufficient access to fresh water, They designed the system for Tastiota, a small village in the Sonoran desert, which had been trucking in its water from 100 kilometers away. After distillation the seawater, what’s left is brine that can be converted to salt and sold to other businesses nearby, creating a circular economy. Other markets for the desalination unit include the global sunbelt located several degrees above and below the equator and hotels in coastal communities. Many of the world’s deserts lie in this region.
“Hotels could use this to reduce their impact on the areas they are serving,” he said. “A lot of the locations of these hotels are in fragile basins at risk of getting saline intrusion.”

Sustainability is the goal

What makes this solution sustainable is the business component. This technology results in both a sellable byproduct, by processing brine into salt, and an improved ability for coastal fishers to bring their catch to bigger markets. This significantly improves the technology’s financial viability and provides a true market solution.
“I realized that the potential of such a solution had far-reaching implications globally. It was clear to me that the commercial potential of this idea was scalable to different conditions in different regions of the world,” Mogosanu said..

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