KLIMAneutrale und reststoffreie Klärschlammverwertung mit PHOsphorsäureproduktion in Südost-NieDerSachsen

The KlimaPhoNds project pursues decentralized phosphate recovery at wastewater treatment plants and, building on this, central refinement of the phosphate precipitation products into high-quality phosphoric acid, ammonia water and magnesium chloride, which can be utilized, for example, in fertilizer production, incineration plants, nutrient production and internally at wastewater treatment plants. In addition, the project aims to achieve full energy and feedstock recovery from sewage sludge. The resulting fully dried and low-phosphate sewage sludge can be utilized residue-free as a fuel and aggregate in the cement industry for energy and materials, or alternatively as an additional fuel in power plants. Several innovations are to be implemented on an industrial scale in order to demonstrate the climate neutrality and resource efficiency of the developed concept. KlimaPhoNds is a research and development project funded by the German Federal Ministry of Education and Research (BMBF) under the "Regional Phosphorus Recycling" (RePhoR) funding program and is supervised by the Karlsruhe Project Management Agency (PTKA).