Current projects at Sjöstadsverket

Project summary

Membrane distillation for treatment of effluents and production of clean water
Goal: To test and optimize (from a life-cycle perspective) membrane distillation for treatment of water streams.
Expected benefit: To show the potential of membrane distillation as alternative or complement to existing separation technologies from a technical and system perspective.
Project summary (pdf, 870 kB)

Small-scale biogas upgrading technology
Goal: To test and further develop a technology for small-scale biogas upgrading.
Expected benefit: Enable cost-efficient biogas upgrading even at smaller scales.

Reduce the greenhouse gas emissions from Swedish wastewater and sewage sludge management
Goal: To provide new knowledge on the green house gas (GHG) emissions from wastewater and sludge processes, and to provide good decision support on suitable combinations and operation for such processes to minimize GHG emissions.
Expected benefit: Decreased greenhouse gas emissions from the treatment of wastewater, and especially from the treatment of reject water and the handling of the sewage sludge.
Project summary (pdf, 540 kB)

Removal of pharmaceuticals from the wastewater
Goal: Treated municipal wastewater shall not contain harmful proportions of chemical substances.
Expected benefit: Further decreased risk for long term negative effects on the environment.
Project summary (pdf, 450 kB)

More efficient biogas production
Goal: Increased biogas production by utilizing more of the organic substances contained in the produced sludge.
Expected benefit: Substantially increased biogas production at municipal treatment plants.
Project summary (pdf, 2 MB)

Anammox technology: nitrogen reduction
Goal: Increase knowledge of nitrogen reduction systems of supernatant from dewatered sludge at municipal treatment plants.
Expected benefit: Research and development efforts can lead to a more cost-effective and environmentally friendly nitrogen reduction technology.
Project summary (pdf, 600 kB)

Energy and resource management facility
Goal: To investigate whether a conventional wastewater treatment plant can be run with high organic load, short sludge age and nutrient removal by 100% biological assimilation.
Expected benefit: The proposed project will lead to imply that treatment plants will produce more energy (through production of biogas from sludge digestion) than they consumed to treat wastewater. The plants will have a more stable and safe operation. Low or no usage of chemicals.
Project summary (pdf, 380 kB)

ITEST - energy efficiency and improved wastewater treatment by use of waste heat
Goal: To stabilize temperatures in the biological treatment step through the use of waste heat and to lower the temperature in the return flow for power generation.
Expected benefit:  Improved biological wastewater treatment even at low temperatures and increased efficiency of power plants.
Project summary (pdf, 950 kB)