Pyrolyse i avløpshåndtering og utvinning av biokull

This thesis has investigated if pyrolysis is a sustainable solution for the treatment of sewage sludge for Horten Municipality. Separate laboratory experiments and literature research was executed to answer the research question. Sewage sludge extracted from Horten Municipality`s treatment plant has been pyrolyzed at 500°C, 700°C and 800°C. Various tests have been carried out on the biochar extracted from the pyrolysis to find out which biochar is most suited for different areas of use. The results shows that biochar extracted from sewage sludge contain important plant-available nutrients, stores and binds carbon, and binds heavy metals. These properties give the possibility that the biocha…