One of our main goals is to conserve natural resources by managing material flows in the best way possible, no matter what task we are doing - from tapping into sources of water all the way through to treating wastewater. REMONDIS Aqua's material flow analysts are motivated by both the ecological and economic aspects of our work and, with raw materials becoming ever scarcer, they develop concepts that cut costs and protect the environment. The residual materials generated by sewage treatment plants - i.e. screenings, sand, fats and sewage sludge - are important resources. We make the most of the energy and raw material potential of these substances by returning them to the economic cycle using sophisticated material flow management systems.