Landfill Gas Collection and Control Project Phase 1
Construction work on Phase 1 of the Landfill Gas (LFG) Collection and Control System at Lincoln's Bluff Road Municipal Solid Waste Landfill began in October 2010. This was the first phase of a multi-phased project to begin collecting generated LFG from 61 acres of the landfill. Future collection phases will be constructed as landfilling of waste continues until the landfill reaches capacity in 2035.
Phase 1 work included construction and installation of 54 vertical gas extraction wells ranging in depth from 40 to 100 feet; 17,600 lineal feet of header and lateral gas collection piping; and, a vacuum blower and process utility flare unit to extract and burn the collected LFG.
|Collection Area||61 acres|
|No. of Gas Wells||54|
|Depth of Wells||40 ft to 100 ft. (est.)|
|Collection Piping Length||17,600 feet (est.)|
|Lateral Size||6 to 12 inch diameter|
|Header Size||12 to 24 inch diameter|
Map of Project Area (233 K)
The City is planning a future project to ensure utilization of the collected LFG as a renewable energy source. Collection of the LFG will also assist in controlling and reducing odors at the site.
LFG consists of about 50% methane and 45% carbon dioxide and other gases resulting from biological decomposition of aterials in the waste. Methane emissions are approximately 21 times more potent than carbon dioxide emissions. Recent gas generation modeling performed by SCS Engineers estimated that 1,520 standard cubic feet per minute (scfm) of LFG would be collected and burned by the process utility flare with start-up of Phase 1 in 2011. Destruction of the methane in this Phase 1 LFG flow would be equivalent to a reduction in annual carbon dioxide equivalent emissions of approximately 158,200 metric tonnes per year.
*Source - SCS Engineers Gas Generation Modeling - 2010
** Source - US EPA LFGE Benefits Calculator
|Estimated Landfill Gas Generation||2,027 scfm (2011)*|
|Estimated Gas Recovery||1,520 scfm (2011)*|
|Methane (CH4) Concentration||50% methane|
|Avoided Methane Emissions||Preventing Carbon Dioxide equivalent (CO2e) emissions of: 158,200 metric tonnes of CO2e per year|
|Direct Use Emissions Reduced Equivalent to:**||
The 1,520 scfm of LFG has an approximate lower heating value of 41.6 million BTU's per hour and realistic electrical generation capacity of 27.1 million kilowatt hours (kWh) per year. This equates to enough electrical energy to meet annual electrical demands of approximately 2,250 households.
For more information about this project, contact Karla Welding, Supt. of Solid Waste Operations, at 402-441-7867.
In the News
- News Release: City of Lincoln, LES Dedicate Landfill Gas to Energy Project (10/4/13)
- 5 City TV: News Conference (10/4/13)
- Lincoln Journal Star: Landfill methane project viewed as revenue generator for Lincoln (11/8/10)
- Mayor's News Release: Drilling Started For Landfill Gas Project (11/8/10)