Bioorganically-augmented high value fertilizer
First Claim
1. A system for processing biosolids into fertilizer, comprising:
- a first mixer adapted to blend the biosolids with acid and an oxidizing agent and convert the biosolids into a pumpable paste;
a pressure vessel with a head space pressure adapted to receive the pumpable paste from the first mixer, wherein the pressure vessel is adapted to retain the pumpable paste at a predetermined pressure and temperature as determined by the head space pressure and for a period of time;
a second mixer adapted to receive the pumpable paste from the pressure vessel and mix the pumpable paste with a hardening agent; and
a granulator adapted to break the hardened paste into pelletized fertilizer.
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Accused Products
Abstract
The invention is directed to processes for treating biosolids that result in high-value, nitrogen-containing, slow-release, organically-augmented inorganic fertilizer that are competitive with less valuable or more costly conventional commercially manufactured fertilizers. The process involves conditioning traditional waste-water biosolids and processing the conditioned biosolids continuously in a high throughput manufacturing facility. The exothermic design and closed loop control of the primary reaction vessel decreases significantly the amount of power necessary to run a manufacturing facility. The process utilizes green technologies to facilitate decreased waste and enhanced air quality standards over traditional processing plants. The fertilizer produced from recovered biosolid waste is safe and meets or exceeds the United States Environment Protection Agency (USEPA) Class A and Exceptional Quality standards and is not subject to restrictions or regulations.
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Citations
29 Claims
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1. A system for processing biosolids into fertilizer, comprising:
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a first mixer adapted to blend the biosolids with acid and an oxidizing agent and convert the biosolids into a pumpable paste; a pressure vessel with a head space pressure adapted to receive the pumpable paste from the first mixer, wherein the pressure vessel is adapted to retain the pumpable paste at a predetermined pressure and temperature as determined by the head space pressure and for a period of time; a second mixer adapted to receive the pumpable paste from the pressure vessel and mix the pumpable paste with a hardening agent; and a granulator adapted to break the hardened paste into pelletized fertilizer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification