Solid waste treatment system

Patent metadata

Field	Value
Publication number	US-11213869-B2
Application number	US-201916267553-A
Country	US
Kind code	B2
Filing date	Feb 5, 2019
Priority date	Aug 8, 2016
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A solid waste treatment system includes: a solid-liquid separator module configured to receive mixed solid and liquid waste and separating solid material from the mixed solid and liquid waste; an accumulator and macerator module configured to receive and macerate the solid material from the solid-liquid separator module; a drying module configured to receive and dry the macerated solid material from the accumulator and macerator module; and a combustion module configured to receive and combust the dried macerated solid material from the drying module.

First claim

What is claimed is:

1. A solid waste treatment system comprising:
a solid-liquid separator module configured to receive mixed solid and liquid waste and separate solid material from the mixed solid and liquid waste;
an accumulator and macerator module configured to receive and macerate the solid material from the solid-liquid separator module;
a drying module configured to receive and dry macerated solid material from the accumulator and macerator module; and
a combustion module configured to receive and combust dried macerated solid material from the drying module;
wherein the accumulator and macerator module comprises:
an accumulator for receiving the solid material from the solid-liquid separator module;
a macerator; and
a first actuator configured to force the solid material from the accumulator and into the macerator; and

wherein the solid waste treatment system further comprises an extrusion module through which the drying module receives the macerated solid material from the accumulator and macerator module.

2. The solid waste treatment system of claim 1 , wherein the solid-liquid separator module comprises a conveyor having spaced belts configured to drain liquid from the mixed solid and liquid waste, wherein the conveyor is configured to transport the solid material to the accumulator and macerator module.

3. The solid waste treatment system of claim 1 , wherein the first actuator is configured to force the solid material into the macerator, thereby forcing the macerated solid material into the extrusion module.

4. The solid waste treatment system of claim 3 , wherein the extrusion module comprises:
a valve through which the extrusion module receives the macerated solid material from the accumulator and macerator module;
a loading tube configured to receive the macerated solid material from the accumulator and macerator module through the valve; and
a second actuator configured to force the macerated solid material through the valve and to the drying module.

5. The solid waste treatment system of claim 4 , wherein:
the valve is configured in a first position when the loading tube is to receive macerated solid material from the accumulator and macerator module through the valve; and
the valve is configured in a second position when the second actuator is to force macerated solid material through the valve and to the drying module.

6. The solid waste treatment system of claim 1 , wherein the drying module comprises a drying plate configured to rotate when the drying module receives the macerated solid material from the extrusion module and to dry the macerated solid material.

7. The solid waste treatment system of claim 6 , wherein the drying module comprises a scraper configured to remove the dried macerated solid material from the drying plate.

8. The solid waste treatment system of claim 1 , wherein:
the combustion module comprises: a combustor; and a hopper configured to transport dried macerated solid material from the drying module to the combustor;
the hopper comprises a travel conduit and a rotating auger within the travel conduit, the rotating auger configured to transport the dried macerated solid material to the combustor; and
the combustion module produces a flue gas upon combusting the dried macerated solid material and provides the flue gas to the drying module.

9. The solid waste treatment system of claim 8 , further comprising a thermo-electric power generation device placed in the flue gas to receive thermal energy and generate electrical power.

10. A method of solid waste treatment comprising:
receiving, by a solid-liquid separator module, mixed solid and liquid waste;
separating, by the solid-liquid separator module, solid material from the mixed solid and liquid waste;
macerating, by an accumulator and macerator module, the solid material;
drying, by a drying module, the macerated solid material; and
combusting, by a combustion module, the dried macerated solid material;
wherein the accumulator and macerator module comprises an accumulator that receives the solid material from the solid-liquid separator module and a first actuator that forces the solid material from the accumulator;
wherein the method further comprises activating the first actuator thereby forcing the solid material into a macerator of the accumulator and macerator module; and
wherein forcing the solid material into the macerator of the accumulator and macerator module comprises forcing macerated solid material in an extrusion module.

11. The method of claim 10 , further comprising producing, by the combustion module, a hot flue gas and providing the hot flue gas to the drying module.

12. The method of claim 10 , further comprising extruding the macerated solid material onto a rotating drying plate of the drying module.

13. The method of claim 10 , further comprising extruding, by the extrusion module, the macerated solid material into the drying module.

14. The method of claim 13 , wherein the extrusion module comprises:
a valve;
a loading tube that receives the macerated solid material from the accumulator and macerator module through the valve; and
a second actuator that forces the macerated solid material through the valve and into the drying module.

15. The method of claim 14 , wherein:
the valve is in a first position when the loading tube receives the macerated solid material from the accumulator and macerator module through the valve; and
the valve is in a second position when the second actuator forces the macerated solid material through the valve and to the drying module.

16. The method of claim 15 , further comprising switching the valve from the first position to the second position after the loading tube receives the macerated solid material and before the second actuator forces the macerated solid material through the valve and to the drying module.

17. A method of solid waste treatment comprising:
receiving, by a solid-liquid separator module, mixed solid and liquid waste;
separating, by the solid-liquid separator module, solid material from the mixed solid and liquid waste;
macerating, by an accumulator and macerator module, the solid material;
drying, by a drying module, the macerated solid material;
combusting, by a combustion module, the dried macerated solid material; and
extruding the macerated solid material onto a rotating drying plate of the drying module.

Assignees

• Res Triangle Inst

Inventors

• Piascik Jeffrey Robert
• Stokes Charles David
• Klem Ethan
• Stoner Brian Rhys
• Gregory Christopher
• Baldasaro Nicholas G
• Sellgren Katelyn Lea
• Rogers David E
• Grant Brian
• Hawkins Brian Thomas
• Cellini Enzo

Classifications

• F23G5/02 Primary

  with pretreatment · CPC title

• C02F9/00

  Multistage treatment of water, waste water or sewage · CPC title

• C02F11/12

  by de-watering, drying or thickening · CPC title

• C02F11/13 Primary

  by heating · CPC title

• Y02W10/37

  using solar energy · CPC title