System for the treatment of organic waste and/or waste, particularly waste from biogas plants, slurry and the like, cut or green waste and/or sewage sludge, comprising - a device for removal of impurities from the organic waste, - a device for crushing the organic waste material which is arranged downstream the device for removal of impurities, - a device for conversion of the organic waste into the processed products coal and process water using hydrothermal carbonization which is arranged downstream the device for removal of impurities and/or the device for crushing the organic waste material, - a device for separation of the processed products coal and process water resulting from the hydrothermal carbonization, particularly a chamber filter press or a centrifuge, which is arranged downstream the device for conversion of the organic waste into the processed products coal and process water using hydrothermal carbonization, - a device for drying the coal obtained as a processed product, which is arranged downstream the device for separation of the processed products coal and process water resulting from the hydrothermal carbonization, wherein a process water resulting from the drying of the coal is conveyed to the process water obtained by the hydrothermal carbonization, and - a device for an at least partial vacuum distillation of the process water obtained as a processed product by concentrating using negative pressure for the production of fertilizer which is arranged downstream the device for separation of the processed products resulting from the hydrothermal carbonization, comprising - an apparatus for a distillation of a volatile ammonium contained in the process water and - an apparatus for the subsequent mixing of the distilled ammonium with a sulphuric acid for the production of an ammonium sulphate usable as fertilizer. - a device for removal of impurities from the organic waste, - a device for crushing the organic waste material which is arranged downstream the device for removal of impurities, - a device for conversion of the organic waste into the processed products coal and process water using hydrothermal carbonization which is arranged downstream the device for removal of impurities and/or the device for crushing the organic waste material, - a device for separation of the processed products coal and process water resulting from the hydrothermal carbonization, particularly a chamber filter press or a centrifuge, which is arranged downstream the device for conversion of the organic waste into the processed products coal and process water using hydrothermal carbonization, - a device for drying the coal obtained as a processed product, which is arranged downstream the device for separation of the processed products coal and process water resulting from the hydrothermal carbonization, wherein a process water resulting from the drying of the coal is conveyed to the process water obtained by the hydrothermal carbonization, and - a device for an at least partial vacuum distillation of the process water obtained as a processed product by concentrating using negative pressure for the production of fertilizer which is arranged downstream the device for separation of the processed products resulting from the hydrothermal carbonization, comprising - an apparatus for a distillation of a volatile ammonium contained in the process water and - an apparatus for the subsequent mixing of the distilled ammonium with a sulphuric acid for the production of an ammonium sulphate usable as fertilizer.