Analytical Modeling to Simulate Gas Production for Various Tested Landfill Cells

作者：Shi, Jianyong^*; Chen, Minghao; Qian, Xuede; Liu, Xiaodong

来源：Journal of Environmental Engineering (United States), 2016, 142(3): 04015088.

DOI：10.1061/(ASCE)EE.1943-7870.0001054

• Symmetric equation
• Gas production
• Peak rate behavior
• Steady degradation ratio
• Gas pressure distribution

The gas extraction wells installed in landfills are used to control gas emission. The degradation of municipal solid waste (MSW) is the main influencing factor for gas production and migration. The symmetric equation of gas migration was established considering the gas extraction wells and peak behavior of the degradation rate. An analytical solution is presented. The peak behavior of degradation rate can be modeled by an equation. The steady degradation ratio of MSW is related to methane generation potential Lo in the LandGEM model. The extraction and injection tests can be well simulated by the symmetric change theory of gas pressure in landfills. From back analysis of the Brogborough test, both the MSW landfill degradation rate and the peak value of gas pressure increased with sludge addition. The degradation time at peak is less than about 700 days. The peak gas pressure in landfill with added sludge increases by 20%.

• 出版日期2016-3
• 单位河海大学