It is understood that methane gas recovery project is an inter-governmental cooperation projects, the United States and China have a wide range of cooperation in the methane gas, natural gas, etc. as early as 2004. Methane to Markets Partnership aimed at reducing greenhouse gas emissions and improve the global environment. At present, cooperation between countries have focused on four main sources of methane: the use of biological excrement, coal mines, landfills, natural gas and oil systems. With the rapid development of China''s urbanization, landfill methane gas emissions can not be ignored is becoming "environmental killer."

Beijing municipal government counselor, Waste Policy expert Wang Ping in an interview with reporters, said with respect to water pollution, air pollution, China''s management of waste pollution is not clear enough, the understanding also lacks a lot. China''s rapid growth in the amount of waste generated by 8% per year, is facing a serious "garbage crisis." On landfill gas is concerned, China has 5000 regular landfill every day, large amounts of methane gas emissions, recycling methane but less than 10%.

With the rapid expansion of the economy and the rapid development of the city, the central city of Changsha facing increasingly serious problem of "garbage crisis." Changsha Municipal Government Deputy Mayor Li said, as an energy input city, Changsha, energy and environmental pressures facing the growing amount of landfill urban development brought to an annual 8-10 percent growth rate. The United States in terms of new energy sources such as the use of methane gas began earlier, the technology is mature, very welcome exchanges and cooperation with the US in terms of methane gas recovery.

High wisdom said that the current recovery in the US EPA Landfill Methane gas utilization projects already has 31 partner countries and more than 900 partner organizations, and landfill Nanjing, China, Ma On Shan and other cities were carried out methane recycling cooperation. The US government will spend $ 53 million over the next five years for this project to support technology transfer and technical cooperation in the project.