CIRCULAR FLOWS: The Toilet Revolution!
An installation by EOOS / Official Austrian Contribution to the XXII Triennale di Milano 2019

EOOS, CIRCULAR FLOWS, Installationsansicht, 2019 © EOOS

It is one of the most pressing environmental issues of our time: the contamination of our water bodies with nitrogen. The Viennese design studio EOOS has developed the revolutionary prototype of a toilet for urine separation (Urine Trap) which offers a systemic design solution in the battle against the mostly disregarded global nitrogen problem. Commissioned and curated by the MAK, the project presents the Urine Trap in a toilet developed together with LAUFEN embedded into a multimedia installation illustrating the ecological interplay of coastal waters, wastewater systems, and agriculture. The exhibition by EOOS shows how design can contribute to repairing the nitrogen cycle and hence to protecting the ecological boundaries of our planet. The foundation of the project was developed over years in research conducted by “Eawag: The Swiss Federal Institute of Aquatic Science and Technology of the ETH Domain” (Switzerland) for the Bill & Melinda Gates Foundation. The contribution was awarded the „Ape Nera,“ the Black Bee Award of the Triennale.

Exhibition Venue
XXII Triennale di Milano 2019
Broken Nature: Design Takes on Human Survival
Milan, 1.3. – 1.9.2019


Christoph Thun-Hohenstein, General Director and Artistic Director, MAK
Marlies Wirth, Curator Digital Culture and Design Collection, MAK
Concept, Design, and Installation
Animation and Graphic Design
Process Studio
Urine Trap Toilet
Light Display
Federal Chancellery of Austria
MAK – Museum of Applied Arts, Vienna
Tove Larsen (Eawag – Swiss Federal Institute of Aquatic Science and Technology)
Austrian Cultural Forum Milan


29.05. – 01.09.



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