Processes to beneficiate heat-dried biosolid pellets

Details Processes to beneficiate heat-dried biosolid pellets Processes to beneficiate heat-dried biosolid pellets

2006-03-09

2010-02-16

Langel, Wayne (Department: 1793)

Chemistry: fertilizers

Processes and products

Organic material-containing

C071S012000, C071S013000, C071S014000, C071S015000, C071S017000, C071S021000, C071S022000, C071S025000, C071S064030

Reexamination Certificate

active

07662205

ABSTRACT:
This invention is directed to systems, devices and methods for modifying the process of producing dried biosolids pellets or granules into beneficiated inorganically-augmented bioorganic fertilizer. The present invention describes a method to beneficiate heat-dried biosolids or sludge pellets or granules as presently manufactured by municipalities or companies from a) dewatered municipal wastewater biosolids or sludges within the municipal wastewater treatment plant heat-dried biosolids production facility or from b) finished dry heat dried biosolids pellets or granules in a separate manufacturing facility from the municipal wastewater treatment plant to produce a fertilizer containing sufficient organic and inorganic plant nutrients to be valuable and saleable into the commercial agricultural industry. The present invention describes beneficiation methods to increase the plant nutrient content to a level which permits the finished beneficiated dried biosolids pellet or granule product to compete in the commercial agricultural fertilizer marketplace and also to reduce the odors associated with traditionally-produced heat dried biosolids.

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