New waste-free process produces fertilizer from phosphorus-containing ashes
With “PHOS4green” Glatt presents a new two-stage method that extracts phosphorus from sewage sludge ashes and converts it into ready-to-use fertilizer granulates. In cooperation with an industrial partner and the Material Research and Testing Institute of the Bauhaus University Weimar (MPFA) Glatt has developed a highly efficient process to extract phosphate from sewage sludge ashes, which is then converted into residue-free, ready-to-use standard fertilizers using fluidized bed spray granulation.