Frank van Dien of the Dutch company ECOFYT took part in the Dutch Green Building Award 2012 with his remarkable project “Constructed Green Roof at Berkel-Enschott” – treating domestic wastewater on the roof of the building.

http://www.greenbuildingaward.nl/award1.asp?id=231

He writes about the project:
“This project is really unique, it’s about purifying waste water on your own roof.
But without odors. With the aid of a green roof (with all the climatic advantages thereof). In a place where people usually do not spend much attention. Without maintenance being required very much (almost everything is automated …)”.

The project was realized by ECOFYT with the client (v. Helvoirt Groenprojecten) and the project partners (SHFT, UNESCO-IHE, contractor Roger Michels, Klostermann Nederland, v. Delft installation, Reytec Innovation Projects, GLC Timber Structures, Équipe for Architecture and Urbanism)”.