We take water for granted far too often. Whole civilizations have fallen as a result of over-exploiting water sources, according to Royal College of Art (RCA) graduate student Pratik Ghosh, so it’s imperative that we treat what we have with care. So Ghosh designed Drop by Drop, a plant-based water filtration system that explores more sustainable methods of obtaining water. The system is capable of cleansing home wastewater, and growing herbs at the same time.
Drop by Drop filters water much like transpiration processes in the Amazon rainforest. According to Ghosh, his prototype is a mini biosphere that operates by keeping four factors crucial for transpiration – humidity, light, heat and wind – at optimal levels. “The moisture-laden air is strategically pulled out of the system and condensed to form pure distilled water,” Ghosh said on his website.
A glass dome covers a plant in Drop by Drop, and greywater can be added to the system via pipes. Then, purification is up to the plant itself: a light in the system sets off photosynthesis, and the plant gives off water vapor that can ultimately be condensed to become distilled water. A pump controls airflow and helps speed up the process. Added salt can turn the distilled water into drinking water.
+Info and Source: http://bit.ly/2tdC6DW