Report - DCE - Nationalt Center for Miljø og Energi

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Figure 2.1 Emissions of NH3, NOX and SO2 over time in acid equivalents.
2.2 Description and interpretation of emission trends by gas
2.2.1 Sulphur dioxide (SO2)
The main part of the sulphur dioxide (SO2) emission originates from combustion
of fossil fuels, i.e. mainly coal and oil, in public power and district heating
plants. From 1980 to 2010, the total emission decreased by 97 %. The large
reduction is mainly due to installation of desulphurisation plant and use of
fuels with lower content of sulphur in public power and district heating
plants. Despite the large reduction of the SO2 emissions, these plants make
up 28 % of the total emission. Also emissions from industrial combustion
plants, non-industrial combustion plants and other mobile sources are important.
National sea traffic (navigation and fishing) contributes with about
13 % of the total SO2 emission in 2010. This is due to the use of residual oil
with high sulphur content.
Figure 2.2 SO2 emissions. Distribution according to the main sectors (2010) and time series for 1990 to 2010.
2.2.2 Nitrogen oxide (NOx)
The largest sources of emissions of Nitrogen oxide (NOx) are road transport
followed by other mobile sources and combustion in energy industries
(mainly public power and district heating plants). The transport sector is the
sector contributing the most to the emission of NOx and, in 2010, 45 % of the
Danish emissions of NOX stems from road transport, national navigation,