Fertilizer production methods

Abstract

The invention proposes a method for producing fertilizer that can quickly and easily produce fertilizer with a simple process and low cost. The method for producing fertilizer according to the invention includes a process for adjusting the water content to be greater than 8% and less than 65% by mixing organic sludge generated in waste treatment or wastewater treatment processes with biomass incineration ash, i.e., ash from biomass incineration, at a mass ratio of organic sludge greater than 1 and less than 9 when the total mass of the incinerator is 10. Furthermore, it is better to adjust the water content to between 22% and 43% by mixing organic sludge and biomass ash at a mass ratio of organic sludge between 3 and 6.