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Stanley W Zison, Alex Roqueta: Landfill gas recovery system and method with pressure symmetry. Getty Synthetic Fuels, Gordon L Peterson, September 4, 1984: US04469176 (84 worldwide citation)

In a landfill gas recovery system, the breakthrough danger is minimized, and the system efficiency is improved, by providing pressure-equalizing low-impedance gas paths such as aggregate-filled symmetry trenches positioned within the landfill and surrounding, at least partially, the primary collecti ...


2
Stanley W Zison: Landfill gas recovery method. Getty Synthetic Fuels, Gordon L Peterson, April 17, 1984: US04442901 (69 worldwide citation)

A method of collecting landfill gas from a landfill comprising providing a porous collector in the landfill having a relatively broad collection zone in the path of migrating landfill gas, controlling the pressure in the collector to induce the landfill gas near the collector to flow into the collec ...


3
Lawrence A Siwajek, W Jeffrey Cook, William R Brown: Landfill gas recovery. Acrion Technologies, Pearne Gordon McCoy & Granger, December 1, 1998: US05842357 (56 worldwide citation)

A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a reduced amount of carbon dioxide absorbent which itself may be an in situ derived and recoverable constituent. Separated methane may be concentrated in ...


4
Lawrence A Siwajek, W Jeffrey Cook, William R Brown: Landfill gas recovery. Acrion Technologies, Pearne Gordon McCoy & Granger, October 28, 1997: US05681360 (19 worldwide citation)

A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a reduced amount of carbon dioxide absorbent which itself may be an in situ derived and recoverable constituent. Separated methane may be concentrated in ...


5
Ronald L Brookshire, Donald Brookshire, Travis Brookshire, Seyed Mohammed Reza Kalantar Nejad, James Joseph Beach: Systems and methods for controlling gas flow from landfills. Landfill Gas & Environmental Products, John L Rogitz, January 2, 2001: US06169962 (14 worldwide citation)

An automated, computer-controlled landfill gas recovery system includes a number of equipment vaults, with each vault being associated with one or more wells in the landfill. The wells are in fluid communication with a piping system located in the associated vault, with the piping system including a ...


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Stefan Stamoulis: Tool for enhancing the extraction of landfill gas. Boulware & Valoir, November 1, 2011: US08047276 (3 worldwide citation)

An apparatus and method to internally provide apertures inside polyvinyl chloride (PVC), high density polyethylene (HDPE), or any polymeric pie, plastic pipe-riser (blank casing) in existing landfill gas recovery wells (extraction wells) that have been installed at Municipal Solid Waste Facilities a ...


8
Stefan Stamoulis: Method for extracting landfill gas. Boulware & Valoir, March 19, 2013: US08398335 (3 worldwide citation)

An apparatus and method to internally provide apertures inside polyvinyl chloride (PVC), high density polyethylene (HDPE), or any polymeric pie, plastic pipe-riser (blank casing) in existing landfill gas recovery wells (extraction wells) that have been installed at Municipal Solid Waste Facilities a ...


9
Morizot Denis: Well head with flow control means for landfill gas recovery.. Biogaz System Depollution Valo, December 24, 1987: FR2600371-A1 (2 worldwide citation)

The flow rate of the well head (1) is controlled by means of a metering valve (30, 40) placed between two pressure chambers (17, 18) connected respectively to the network and to the well itself. A hydraulic guard device (80) enables the condensed water to be removed without altering the pressure red ...


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