Procedure for sterilisation of pig manure and elimination of nitrogenated compounds by stripping ammonium nitrogen

摘要

The present invention relates to a procedure for the treatment of pig manure, consisting of sterilising said manure by the application of heat derived partly from biological processes taking place within the manure itself and partly from external sources. The heat from external sources will be preferably derived from a co-generation process. Nitrogen compounds converted to ammonium form, which remain dissolved in the manure during the sterilising process, are removed by passing hot gas, preferably hot air, through the sterilised manure.