Resource recovery utility

• US 4,643,111 A
• Filed: 08/21/1985
• Issued: 02/17/1987
• Est. Priority Date: 08/21/1985
• Status: Expired due to Fees

• Current Assignee: Robert L. Jones
• Original Assignee: Robert L. Jones
• Inventors: Jones, Robert L.
• Primary Examiner(s): Yuen, Henry C.
• Assistant Examiner(s): Warner, Steven E.
• Application Number:
  US06/767,892
• Time in Patent Office: 545 Days
• Field of Search: 110/218, 110/219, 110/223, 110/224, 110/227, 110/228, 110/233-235, 110/255, 405/128, 405/129, 405/53, 405/55, 405/284, 52/595, 71/10-12, 210/750-751, 210/603, 210/901, 48/111, 48/197 A
• US Class Current: 110/234
• CPC Class Codes: B09B 1/00 Dumping solid waste
• CPC Class Codes: B09B 3/00 Destroying solid waste or transforming solid waste into something useful or harmless
• CPC Class Codes: C12M 21/04 for producing gas, e.g. biogas digesters for manure with production of biogas A01C3/028, biological treatment of water, waste water or sewage C02F3/00, C02F11/02, preparation of natural gas or syngas C10L3/06, C10L3/10
• CPC Class Codes: C12M 33/16 Screw conveyor
• CPC Class Codes: Y02E 50/30 Fuel from waste, e.g. synthetic alcohol or diesel
• CPC Class Codes: Y02W 30/20 Waste processing or separation
• CPC Class Codes: Y02W 30/30 Landfill technologies aiming to mitigate methane emissions
• CPC Class Codes: Y10S 210/901 Specified land fill feature, e.g. prevention of ground water fouling

Abstract

A resource recovery utility is provided comprising a landfill having a continuous wall surrounding the perimeter thereof and a containment structure extending completely over the landfill affixed to the continuous wall. Refuse can be introduced into the landfill and compacted therein and at least a portion of the compacted refuse can be removed therefrom. Methane generated by anaerobic bacterial digestion of organic materials contained in the refuse can be removed and recovered.

Claims

1. A resource recovery utility comprising:

(i) a landfill;

(ii) a continuous wall surrounding the perimeter of said landfill;

(iii) a containment structure extending completely over said landfill and affixed to said continuous wall;

(iv) means for introducing refuse into said landfill;

(v) means for compacting said refuse;

(vi) means for removing and recovering methane generated by anaerobic bacterial digestion of organic materials contained in said refuse; and

(vii) means for removing at least a portion of the compacted refuse from said landfill.

2. A resource recovery utility defined in claim 1 wherein the means for introducing refuse into the landfill is a conveyor belt extending through an aperature in the continuous wall thereby providing a means of ingress for refuse deposited thereon to the landfill.

3. A resource recovery utility as defined in claim 1 wherein the compacted refuse removed from the landfill is transferred to an encapsulating plant wherein the compacted refuse is encapsulated in a stable material.

4. A resource recovery utility as defined in claim 1 wherein the landfill is stabilized on pilings.

5. A resource recovery utility as defined in claim 1 wherein the containment structure is formed from a geofabric.

6. A resource recovery utility as defined in claim 1 wherein the containment structure is a light weight roof system.

7. A resource recovery utility as defined in claim 1 wherein the methane gas and/or steam recovered from the resource recovery utility is/are used as a source of energy to operate the resource recovery utility.

8. A resource recovery utility as defined in claim 1 wherein a vapor collection zone is formed in the volume defined above the landfill and between the continuous wall and the containment structure affixed thereto.

9. A resource recovery utility as defined in claim 8 wherein a mixture of methane and carbon dioxide is withdrawn from the vapor collection zone through a vent line in the containment structure by pumping means and passed via a transfer line to a separation plant wherein high purity methane is recovered.

10. A resource recovery utility as defined in claim 1 wherein at least a portion of the compacted refuse is removed from the landfill by an auger or conveyor located beneath the surface of the compacted refuse and extending through the continuous wall.

11. The resource recovery utility as defined in claim 10 wherein the compacted refuse removed from the landfill is fed to a combustion chamber and oxidized to generate steam.

12. A resource recovery utility as defined in claim 1 wherein the vertical height of the continuous wall can be increased by stacking one or more additional continuous wall structures on top of the initial continuous wall.

13. A resource recovery utility as defined in claim 12 wherein each of the continuous walls is formed from a plurality of panels, each having a tongue and groove structure on the opposed horizontal and vertical sides thereof.

14. A resource recovery utility as defined in claim 1 wherein the means for compacting the refuse is a landfill compactor.

15. A resource recovery utility as defined in claim 14 additionally containing a control station adjacent the continuous wall, said continuous wall having a window therein permitting an operator in said control station to have visual access to the landfill.

16. A resource recovery utility as defined in claim 15 wherein the landfill compactor is operated by said operator by remote control.