Landfill Gas
Technology Outline
In Hong Kong, landfilling has been the main disposal practice for municipal solid wastes since 1960s. Currently, there are three operating strategic landfills and 13 closed landfills with a total capacity of 135 million tons and 72.5 million tons respectively.
In a landfill, decomposition of organic portions of the solid wastes produces carbon dioxide, methane gas and other organic compounds and gaseous products. In the advanced landfills, gas collection systems are installed to collect the landfill gas (see diagram below).
(Source for above: Environmental Protection Department, HKSAR)
