Prototype at Kaja Student Dormitories in Norway

The Norwegian University of Life Sciences (UMB) follows the vision of a zero-emission campus. A first step towards this vision has been realized at Kaja Student Dormitories that have been equipped with a source separating sanitary system. Water from kitchen and washing facilities is collected separately and treated in a constructed wetland.

Less water consumption

Jets™ vacuum toilets are providing the students the same bathroom comfort as at home at 20% of the water consumption of a conventional toilet system. The blackwater (wastewater from toilets) is pumped to the UMB environmental test and demonstration laboratory where it can be used for different experiments and prototype testing. UMB is a Nordic competence centre for ecological sanitation.

Membrane technology

The SANBOX prototype to be tested at the Kaja Student Dormitories will be a novel solution for the numerous weekend houses and tourist lodges over the whole of Scandinavia. Due to the northern latitude, Scandinavia differs from the Alps and the Mediterranean area and solar radiation will not be sufficient to evaporate wastewater. The prototype at Kaja Student Dormitories will therefore focus on high treatment performance using membrane technology to reach excellent effluent quality with low energy consumption. Solid residues will be composted so that they can be reused for local agriculture

Schedule:

July 2009 - August 2010	Developing of technology at the different SANBOX partners
September 2010 - October 2010	Installation and initial test
October 2010 - April 2011	Test and monitoring

Components foreseen for prototype and partners involved in its development:

Component	Involved partners
Vacuum toilet system	Jets AS, Norway
Compost filter for blackwater (wastewater from toilets)	Jets AS, Norway Norwegian University of Life Sciences (UMB), Norway
Membrane based post treatment system for blackwater liquid fraction	Bioazul SA Technologie Transfer Zentrum Bremerhaven (TTZ), Germany
Composting system for solid residues and recycling nutrients for local agriculture	Seecon GmbH, Switzerland Norwegian University of Life Sciences (UMB), Norway

Flow chart for the planned prototype at Kaja Student Dormitories