The rainwater collector and purifier serves as an appropriate technology on the basis that the device is small-scale, decentralized, energy-efficient, environmentally sound, and can be produced autonomously at global locations.
It is a natural alternative to the complex and convoluted water filters. Without the need for advanced purifying technology, our product relies solely on its natural components while still maintaining the same water purification rate as traditional filters.
The simple system can be adapted to many locales, and three possible iterations including a funnel design, biomimicry, and a traditional harvester approach are shown above.
Link to the full paper: https://www.dropbox.com/s/i2qpk4yjqw5shi9/Rainwater%20Collector%20%28Appropriate%20Tech%29.pdf?dl=0
A low-cost prototype with Barrett Hazeltine and team members Jonathan Gomez, Brian Tung, Neil Goh.