Biosolid treatment process and system
AssigneeEcoremedy LLC
InventorDavid Mooney
Life of this patent
Estimating the term…
Abstract
A biosolids treatment system that treats human biosolids to produce thermal energy for self-consumption for the production of beneficial use products including low carbon ash, high carbon activated biochar, and Class A biosolids. The system includes a variable feed conveyor that conveys a biosolid feed into a dryer; a dryer that dries the biosolid feed to a predetermined moisture content to create one of a beneficial use products, where the predetermined moisture content is controlled by varying the speed of variable feed conveyors and a variable feed mixer; and a gasifier that converts the biosolid feed into two of the beneficial use products.
Claims15
A human biosolids treatment system comprising:
- a source of human biosolids;
- a dryer configured to dry the human biosolids to a predetermined moisture content to create dried biosolid output including Class A biosolids;
- a source of wet biosolids;
- a mixer configured to mix the dried biosolid output and the wet biosolids and output a mixed biosolid feed;
- a moisture sensor configured to measure a moisture content in the mixed biosolid feed;
- a gasifier;
- a variable feed conveyor;
- and
- a controller;
- wherein the variable feed conveyor is configured to variably recirculate the mixed biosolid feed to the dryer and/or variably convey the mixed biosolid feed to the gasifier;
- wherein the controller is programmed to modulate the recirculation rate into the dryer in response to a measured moisture content of the moisture sensor,
- wherein the mixed biosolid feed is the sole fuel for the gasifier;
- and
- wherein the gasifier is configured to convert the mixed biosolid feed into usable thermal energy for system use and at least one of low carbon ash and high carbon activated biochar.
Dependencies are inferred from the claim text.