Come and check out the innovative PHOS4green technology for fertilizer production out of phosphorus recyclates from sewage sludge ashes! Benefit from the information about this phosphorus recycling technology given by Jan Kirchhof, Glatt, in his lecture ‘PHOS4green Hochleistungsdünger aus Klärschlammaschen’ (PHOS4green: High-performance fertilizer from sewage sludge ashes)