A non-partisan, neutral perspective supporting diversity in the color of water

Saturday, May 1, 2010

Manz Clears the Way

Dr. David Manz, retired professor of Civil Engineering from the University of Calgary and current Vice President of Oasis Filter International Ltd., visited Oregon State University on April 30 to give a lecture on Biosand Filtration to "clear" drinking water in developing countries.  A world traveler, David Manz has been working to provide clean water to developing countries since the late 1980s.  His story about inventing the biosand filters is an inspirational one as the filter design and construction continues to be refined even today. When it comes to hydrophilanthropy, he is truly one of the global leaders. And he is willing to share all of his knowledge - just visit this link to not only see his presentation which was attended by over 70 people, but also the AutoCAD drawings which can be downloaded, as well as the manuals to train users to design and build the biosand filter.

Here is David standing next to my personal biosand filter called the HydrAid that is manufactured in Michigan. I was first introduced to these filters when one of the online students enrolled in my Introduction to Water Science and Policy class invited me to Grand Rapids, Michigan to speak on global water issues to Mars Hill, a faith-based organization with many individuals dedicated to trying to find ways to provide safe drinking water to people living in Honduras and Rwanda.

On May 1, David provided a day long workshop on how to design and construct biosand filters. David is an engaging speaker, and he captivated 20 students and faculty who attended the workshop on one of the rare sunny spring days in Oregon. Within a couple of hours, the biosand filter was providing "clear" water. David estimates that over 500,000 biosand filters are currently used across the globe.

And to those who have interest in greywater, David indicated that biosand filters could be used to treat greywater. But he cautioned against using the kitchen sink wastewater because of oils and grease could clog the filter. So the Rainbow Water Coalition takes a break from the greywater world to celebrate the clear skies in Oregon and the clear thinking of an engineer/entreprenuer to provide clearwater to the disadvantaged parts of the world. Thanks for all that you do, Dave.

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