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Process for treating sludge and manufacturing bioorganically-augmented high nitrogen-containing inorganic fertilizer

  • US 9,695,092 B2
  • Filed: 05/10/2011
  • Issued: 07/04/2017
  • Est. Priority Date: 02/23/2006
  • Status: Active Grant
First Claim
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1. An organically-enhanced, inorganic fertilizer, comprising captured fugitive odorants which comprise uniformly blended:

  • ammonium nitrogen bound to organic compounds as a salt; and

    plant nutrients, at least some of which comprise the captured fugitive odorants;

    wherein the fertilizer contains at least 8% nitrogen by weight, is sterile, meets USEPA Class A biosolid standards, meets USEPA Exceptional Quality (“

    EQ”

    ) standards for metals with levels of arsenic, cadmium, copper, lead, mercury, molybdenum, nickel, selenium and zinc below harmful levels for fertilizer, biologically active compounds are denatured or hydrolyzed, is safe for handling, comprises a pH of between pH 5.0 and 7.0, and is at least 98% dry solids by weight;

    wherein the fertilizer is in a form of granules or pellets of between 2 mm and 3 mm in diameter; and

    wherein the organic compounds comprise odor-causing components that are chemically altered and inactivated.

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