The Evolution of Wastewater Treatment in Norway

Event Date/Time: 
October 26, 2017 - 2:00pm
Event Location: 
3540 Engineering Building
Harsha Ratnaweera, PhD, Norwegian University of Life Sciences


Norway, with its 5 million population and 6 million P.E. wastewater treatment capacity, has somewhat peculiar practices: Over 70% of wastewater goes through a coagulation stage; some plants have treatment requirements of over 97% on phosphates; no private ownership; many plants are constricted underground/rocks; over 80% of sludge is used in agriculture etc. Norwegian plants also show that removing over 80% organic matter without biological treatment is possible. Norwegian practices thereby stand out from both continental European and Scandinavian practices.  Welcome to a quick journey through the evolution of Norwegian wastewater treatment.