Process for the production of organic-inorganic fertilizer mixtures

摘要

The invention pertains to the field of agriculture, more specifically to methods for producing organic mineral fertilizer mixtures containing sewage sludge. The method comprises mixing sewage sludge with a detoxication agent that consists of sodium humate in the form of a finely-divided fraction having a particle size not exceeding 100 microns and in an amount representing at least 10% of the mass of the sludge. The invention can be used for increasing the efficiency of use of sewage sludge as fertilizer by reducing the heavy metal content thereof.