Industrial plants, such as a paper mill, sometimes require a great deal of water for the production process. This water must be recycled or purified for discharge into a water body. SCHUSTER engineering offers the planning of wastewater treatment plants according to the latest standards. The environmental regulations and the requirements for the purification quality of the wastewater have become increasingly stringent in recent decades. Sewage treatment plants must therefore be equipped with several, sometimes highly complex treatment stages.