DTU Sustain | 14,786 followers on LinkedIn. Department of Environmental and Resource Engineering, Technical University of Denmark | DTU Sustain is one of Europe's largest university departments specialising in water, environmental engineering, and sustainability. The department is working to develop new environmentally friendly and sustainable technologies and disseminate this knowledge to society and new generations of engineers. Our research, teaching, and innovation activities are focused on: Air, Land & Water Resources, Environmental Fate & Effect of Chemicals, Residual Resource Engineering, Urban Water Systems and Water Technologies, Materials and Durability, Indoor Environment and Geotechnics and Geology.