<p>Karsten Gjefle of Sustainable Sanitation Design in Norway will design and test a low cost system to rapidly turn human excreta into pathogen-free compost for use as fertilizer for farmers. Gjefle and his team hope to create a viable financial market that will remove untreated sewage from urban areas and also provide farmers with recycled, safe and natural soil improvements.</p>


Karsten Gjefle of Sustainable Sanitation Design in Norway will design and test a low cost system to rapidly turn human excreta into pathogen-free compost for use as fertilizer for farmers. Gjefle and his team hope to create a viable financial market that will remove untreated sewage from urban areas and also provide farmers with recycled, safe and natural soil improvements.

Universal Slum Sanitation with 100% Safe Reuse of Nutrients

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View the Grand Challenges partnership network

Great ideas come from everywhere.