Organomineral Fertilizers based on Sediments of Waste Water and Mineralized Mass of Phosphorites of Central Kysylkum

Abstract

The article shows that by decomposing the mineralized mass of phosphorites of the Central Kyzyl Kum with an incomplete norm of sulfuric acid (30-70% of stoichiometry in CaO), followed by the interaction of decomposition products with urban sewage sludge, organic-mineral fertilizers can be obtained. The optimal ratios of the starting substances and the norm of sulfuric acid for the decomposition of the mineralized mass upon receipt of organic fertilizers based on sewage sludge and mineralized mass were determined.