Objectives

Phosphorus (P) is an essential nutrient element for all living beings, which cannot be replaced. However, innovations in the ‘Sewage Sludge Ordinance’ prohibit large sewage treatment plants from directly recycling sewage sludge in agriculture. New strategies for the efficient use of phosphorus are therefore necessary. The aim of the project is to investigate the effect of phosphorus recycling products from the multiple use of sewage sludge in the Central Hesse region on the yield +quality of the harvested products +to establish a P material flow management system. The fertilizer production is preceded by a thermal use, which should ensure that undesirable substances are removed without residues.