Olov Ershag is to become the chief operating officer of Scandinavian Enviro Systems after this summer, Ershag will be responsible for the technical components of future delivery projects together with the company’s project management in Sweden, and will optimise technical solutions for specific customer needs and criteria. He also takes over the responsibilities of Enviro’s current chief technical officer, Elisabeth Gustafsson, who after three years leaves the company for GU Ventures.