Chapter 1: Environmental technology in Sweden - a short background Senior lecturer Per Olof Persson, Industrial Ecology, KTH . Chapter 2:Strategies for a better environment Senior lecturer Per Olof Persson, Industrial Ecology, KTH. Chapter: 3 Water management and water treatment methods Senior lecturer Per Olof Persson and Senior lecturer Lennart Nilson, Industrial Ecology, KTH. Chapter 4: Applications of water handling and waste water treatment Senior lecturer Per Olof Persson, Industrial Ecology, KTH. Chapter 5: Air pollution control and gas cleaning technology Senior lecturer Per Olof Persson and Senior lecturer Lennart Nilson, Industrial Ecology, KTH, PhD Anders Östman, Kemiinformation AB. Chapter 6: Examples of air treatment measures Senior lecturer Per Olof Persson, Industrial Ecology, KTH. Chapter 7: Waste management Senior lecturer Per Olof Persson and Senior lecturer Monika Olsson, Industrial Ecology, KTH.