Light activated ...

Light activated Nanotechnology Water Treatment

There are two parts to the contamination, the dissolved contamination and the suspended contamination.  The suspended contamination can be reduced by vortex filters in a sustainable way and possibly other methods, but the dissolved contaminants are more difficult.  Puralytics has developed a floating mesh with a sunlight activated nanotechnology coated mesh (called the LilyPad) for treating water which uses aggressive photochemical reactions at the surface of the mesh to break apart organic contaminants.  Dissolved contaminants like petrochemicals are completely destroyed in this process, and no chemicals or waste stream is generated - byproducts are CO2 and water.  This is powerful, environmentally sustainable technology, which can be used for long periods in a passive way without chemicals, filters, etc. once excessive suspended contamination is reduced.  More info > http://www.puralytics.com/html/lilypad.php