Martin Drewes and Martina Findling developed an innovative water filtration system in Germany. The trick is making it scalable in Kenya. As a German soldier in Bosnia two decades ago, Martin Drewes remembers fretting over children subsisting on “a little bit” of bottled water, while the rest was too dirty to drink. “It’s always been at the back of my mind,” the idea that this life-sustaining resource is taken for granted, the 43-year-old mechanical engineer says in his spartan office on a former Soviet base that’s now Magdeburg-Stendal University of Applied Science. After all, in his native Saxony-Anhalt, fresh H2O is everywhere — so plentiful that a bigger worry is the Elbe River inundating the lush, green countryside. Years later, after an unsuccessful attempt to create a water wheel-powered electric generator for use in disaster-hit communities in the developing world, he had an idea. While his pontoon-mounted dynamo tied to a riverbank couldn’t do much more than charge a mobile phone, he thought the water wheel turning it might be repurposed for something more meaningful: making unpotable water drinkable. |