At the end of this activity, students should be able to explain the principle of the biological treatment of municipal wastewater, explain how wastewater is purified by the activated sludge method and the biofiltration method, define eutrophication and explain the biological method for the removal of nitrogen and phosphorus compounds, explain how biogas is produced, discuss the role of enzymes in biological washing powders, and present the main stages of the industrial production of enzymes.

Originally released by Learnetic, 2016.