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The Study on Landfill Gas Migration Model in Beijingnanzhan

Author: YangHaiJing
Tutor: HuangTao
School: Southwest Jiaotong University
Course: Environmental Engineering
Keywords: Non - specification landfill Landfill gas Migrate Mathematical model Application
CLC: X705
Type: Master's thesis
Year: 2008
Downloads: 136
Quote: 1
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Abstract


With the improvement of China's rapid economic development and urbanization level, MSW production increased dramatically. The sanitary landfill is currently the primary means to dispose of garbage, with the large-scale construction of the landfill, the landfill gas pollution control and resource issues become increasingly prominent. The same time, with the increasing of urban population, the construction and demolition of the buildings is constantly generated construction waste and MSW landfill arbitrarily stacked phenomenon. Impact will MSW organic waste degradation due to the presence of construction waste, landfill gas, and landfill gas migration process. Therefore, the study has important practical significance of such a specific landfill gas migration law. In this paper, a combination of theoretical analysis and mathematical treatment to the landfill as a secondary building land New Beijingnanzhan engineering study, analysis of the superstructure of garbage in the landfill and the lower city garbage characteristics, pursuant to such specific landfill state migration of landfill gas in the waste mass. First systematically studied the characteristics of the construction waste and municipal solid waste, anaerobic degradation of organic waste in municipal solid waste landfill gas and its influencing factors, and refuse the existence of the superstructure of the lower organic waste degradation produce landfill gas the impact. Based on the influence factors analysis and mathematical processing, using Darcy's law, draw a vertical permeability of the mixture of the construction waste and MSW and construction waste overburden gas permeability coefficient, applicable to such specific the landfilled state landfill gas migration in the garbage body model. The results show that, the solid skeleton superstructure garbage features, including the effective average pore diameter, porosity, pore bent extent, will affect landfill, landfill gas migration, the establishment of a solid skeleton construction waste characteristics and permeability coefficient between function. Derived upper construction waste, lower landfill gas migration model created such non-specification of municipal solid waste landfill status in the existing norms garbage landfill gas migration model based on correction The model takes into account the effective average pore diameter of the construction waste landfill gas migration. The model derived vertical permeability of the mixture of the construction waste and MSW and construction waste covering the gas permeability coefficient are a function of the average pore diameter and construction waste. Application to establish a mathematical model to calculate the pressure distribution of the Beijing South Railway Station landfill.

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Solid waste disposal and utilization
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