The bacteria breakdown the trash in the absent of oxygen to produce landfill gas ( \(50 \%\) methane and \(50 \%\) carbon dioxide)
The methane gas is extracted from landfill gas and used to generate electricity.
Industrial and agriculture wastewater are discarded into collection pipe system that carries wastewater to a collection pond.
The sludge is rich in organic matter can be used as organic fertilisers in agriculture.