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SLU Research Projects

Project ongoing since: 2005 • Swedish University of Agricultural Sciences (SLU)


Safe and effective use of resources in sewage and waste suitable for developing and middle income countries. Research includes nutrient recycling, protein produced from waste by black soldier fly larvae or worms, or compost technologies.


The Environmental Engineering Group at the Department of Energy and Technology studies nutrient recycling systems from waste to high quality, nutrient-rich products with small risks of spreading diseases. Recycling systems for nutrient rich waste, such as human urine, faeces, food waste, urban manure, slaughterhouse waste, etc. are studied. Recycling products studied are e.g. protein produced from waste by black soldier fly larvae or worms and safe and high quality fertilisers. Research specialties: protein production from waste, sanitisation technique, ammonia sanitisation, greenhouse gas emissions from biological waste treatment processes, compost technology and environmental systems analysis.

- Environmental Engineering
- Low-and middle-income countries: The research includes safe and effective use of resources in sewage and waste suitable for developing and middle income countries.
Example: "Waste to worth" in Uganda where fly larvae convert manure (animal and human) and organic waste into protein rich animal feed.


Image: SLU low and middle income countries © SLU

Countries of activity

Location of main activity

Filter tags

Capacity development Composting, vermicomposting (solid waste), composting toilets Europe & Central Asia Faecal sludge treatment processes Faeces or faecal sludge Fertiliser Food security and productive sanitation Fundamental research and engineering Global Other funding source or unspecified Protein for animal food Resource recovery Sub-Saharan Africa Swedish government Treatment of wastewater or greywater University, education or research institution Urine Urine diversion dehydration toilets (UDDTs)


Swedish University of Agricultural Sciences

The Unit performs both research and education, at both undergraduate and postgraduate levels. The main topic is systems and processes for safe recycling of plant nutrients from the city back to the food production, which is an essential part of a sustainable society, both in developed and developing countries. The research is based on systems analysis and process oriented. Important methods in the system analytic research is ”Substance Flow Analysis” (SFA) and ”Life Cycle Analysis” (LCA). The process oriented research is mainly focused on source separating sewage systems, sanitation/hygienisation technology, both for Swedish conditions and conditions in developing countries, and systems in the compost process. We are responsible for the course "Safe Nutrient Recycling", 10 HEC, given within master programs in biology and environmental science, and for the courses "Selection of water and sanitation system", 10 hp, "Waste Management", 5 hp and "On-site wastewater systems", 5 hp, given in civil engineering program "Vatten och miljöteknik". The emphasis of the courses is on systems and processes (composting, urine separation, etc.) for the treatment and recycling of plant nutrients in sewage and organic waste, the courses also focus on treatment technologies and hygiene.

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