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This paper studies the city garbage treatment, waste energy utilization status, the use of waste energy. In particular, to study the feasibility and economy of northeast China city life landfill biogas power generation technology, as well as its social and environmental benefits. Garbage contains a lot of organic matter, these organics landfill microbial fermentation to produce landfill gas, landfill gas contains methane, carbon dioxide, nitrogen and oxygen, and trace elements in the gas. Landfill gas, carbon dioxide, methane and other gases, or lead to produce the main components of the global warming. Especially the greenhouse effect of the methane gas is 21 times that of carbon dioxide gas. Landfill gas uncollected use cases, uncontrolled release from the landfill emitted as not only pollute the environment of the surrounding areas, there is also the danger of a fire and explosion, landfill operations and the surrounding residents living pose a security risk. At the same time, the landfill gas is a premium energy. Landfill biogas power generation is the use of landfill biogas-to-energy power generation technologies. Including biogas collection, biogas refining, power generation, transmission and electricity sectors. Due to the constraints of the environment and the concept, northeast China has not yet developed the use of landfill gas resources. In this paper, the feasibility of a municipal solid waste landfill biogas power generation technology applications in the Northeast region, economic and environmental benefits and social benefits of adequate research. Research: the landfill landfill biogas volume of output was not significantly influenced by the ambient temperature, the gas production in the northeast region of each season basically balanced and stable, and can be used as landfill biogas power generation fuel; landfill biogas power generation technology in our application of the northeastern region is realistic, extensive promotion and application value of the technology in northern China; good in the economy, the main technical and economic indicators; effect of reducing greenhouse gas emissions, a significant environmental benefits; solve the landfill gas disorderly migration accumulation may lead to explosions, fires and other safety hazards, and avoid re-contamination of the environment, improve the surrounding environment of the landfill, a significant social benefits. The application of this technology for the realization of recycling economy, make full use of the landfill biogas energy, reduce greenhouse gas emissions, and has laid a good foundation will also give the waste power generation clean energy industry representatives unlimited development opportunities.
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