In order to control the air pollution derived from landfill gas emission and produce renewable energy by recovering the waste gas, a series of systematic technologies as well as equipment have been developed. These technologies and equipment are suitable for use in landfills either during operation or after closing. The developed technologies have been successfully applied in hundreds of landfill sites in China, Thailand, Malaysia and other countries.
Technology Features, Specifications and Advantages
The technologies and equipment that were developed include highly efficient sealing film gas collection, gas pretreatment by purification and desulfurization under wet catalytic oxidation, power generation and combined heat and power (CHP) generation through internal combustion engine, enclosed flare combustion, etc. In addition, landfill gas can be upgraded to biomethane, which is a kind of clean carbon neutral fuel, through a new treatment process including the removal of siloxane, catalytic deoxygenation and organic amine decarburization.
To meet the needs of non-landfill waste treatment, an integrated treatment system employing technologies to convert municipal solid waste into refuse derived fuel (RDF), fixed-bed updraft pyrolysis as well as gasification, syngas purification and power generation have been developed. The developed system is efficient, environmental friendly, and applicable in treating municipal solid wastes.
The technologies can be applied for the treatment of landfill gas and municipal solid wastes, with the aim of cleaning the gas from landfills and generating heat and electrical energy from collected wastes.
The demand of these technologies is growing globally as they can reduce greenhouse gas emission and provide an extra energy source for power generation.