Largest waste water treatment plant in the Nordic countries

Our materials processing students on the Sustainable Engineering course were on the move again today to Viikinmäki waste water treatment plant in Helsinki. We went underground through the largest treatment plant in the Nordic countries, which processes the wastewaters of around 800,000 residents as well as the wastewaters of the region’s industry. We learned about the different treatment stages of screening, sedimentation, aeration and biological filtration, and about the current interest in microplastics and their removal from wastewater before release to the sea.