PROCESS FOR THE TREATMENT OF ORGANIC WASTE

摘要

Organic waste material, which contains at least a substantial part of manure is treated by i - separating the organic material in a fraction (A) mainly consisting of the soluble part of said material such as compounds of potassium and nitrogen in solubilized form and a fraction (B) mainly consisting of the (less soluble or) insoluble part of said material such as compounds of P, Ca, and nitrogen in the organic form; ii - sterilizing or pasteurizing fraction (B), followed by an anaerobic fermentation using one or more selected species of microoganisms to, at least partly solubilizing fraction (B) to form a fraction (C) which comprises an increased amount of solubilized nitrogen and a decreased amount of insoluble nitrogen compounds; and iii - wherein fraction (C) is separated into a fraction (D) mainly comprising the soluble compounds such as compounds of nitrogen and into a fraction (E) mainly comprising the insoluble compounds such as compounds of P and Ca. a