High value organic-enhanced inorganic fertilizers

摘要

The invention is directed to manufacture of fertilizer having commercial levels of nitrogen supplemented with organic substances. The process treats organic matter with acid causing hydrolysis of organic polymers after which the mix is injected with nitrogen. The resultant sterilized and liquefied organic matter is disbursed over recycled material for the production of granules. Because the process allows for the controlled addition of acids and ammonia, desired levels of components can be achieved. The process is scalable, odor controlled and safe thereby allowing for the location of biosolid processing facilities in most any location. Further, the fertilizer of the invention provides a dual nitrogen-release profile when applied to crops. After application to soil, fertilizer of the invention releases an immediate bolus of nitrogen, similar to traditional ammonium sulfate, followed by continued slow release of nitrogen typically over a season.

主权项

1. A method for manufacture of a fertilizer comprising:
providing an organic material containing biosolids wherein the organic material has a solids content of at least ten percent; adding an odor control agent to the organic material to create a mixture; adding an acid to the mixture under a first pressure and elevated temperature for a first period of time forming a liquefied mixture; adding ammonia to the liquefied mixture under a second pressure and elevated temperature for a second period of time; and processing the liquefied mixture to form the fertilizer.