Home Plate Based Water Purifying System

I just found a interesting old news on a design website, Dezeen. They said, "a water-filtration system that uses plants to extract arsenic from water supplies and allows the user to sell the poisonous substance at a profit has been voted the "Idea that will change the world" at the Global Design Forum in London today ." 

Poisoned water causes cancer and kill 1.2 million people in developing countries each year. This innovation of plate based water purifying system which is in a small container may change the world. 

How does system work?

"Water is pumped through the container and arsenic is trapped in a filter, and then absorbed by the plants where it poses no danger.

The filtered water is then safe to drink while the plant can be harvested each year and the arsenic chemically extracted. The plants are a naturally occurring species selected for their ability to remove arsenic from the soil they grow in."

                                                  The system in use in Bangladesh

And the cost of the system is extremely low, only 10 USD a year. If you are interested in this project, please read,

http://www.dezeen.com/2013/09/17/plant-based-water-purifying-system-named-idea-that-will-change-the-world/