Annual Danish informative inventory report to UNECE. Emission ...

• Production of container glass/glass wool (SNAP 030315/030316/
040613).
• Production of mineral wool (SNAP 030318).
• Limestone and dolomite use (SNAP 040618).
• Roof covering with asphalt (SNAP 040610).
• Road paving with asphalt (SNAP 040611).
The time-series for emission of acidifying substances, heavy metals,
NMVOC and particulate matter from 0LQHUDO SURGXFWV (NFR 1A2f/2A)
are presented in Table 4.2 and Table 4.3.
The emission of SO2, NOX and CO from the production of cement depends
on raw materials, fuels and combustion conditions. Emissions of
NOX are, among other things, a consequence of high temperature processes
and the emission shows only minor fluctuations. The emission follows
the activity, with a minor decrease in recent years. The emission of
SO2 depends on the S-content in fuels and raw materials. However, the
process acts as a sink for acidifying gases due to the alkaline conditions
in the rotary kiln; see Figure 4.1. The emission of CO displays significant
fluctuations that cannot be explained by known factors.
The emission of NOX from production of container glass is increasing
slightly until 2004 and thereafter decreasing significantly whereas the
emission of CO is decreasing in the period 1990-2009. In the same period
of time, the activity is nearly constant. Emissions of both substances
are related to combustion/process conditions and will be investigated
further. Emissions of the heavy metals lead, selenium and zinc
are related to the raw materials used. Recycled glass constitutes a considerable
part of raw materials and, therefore, the quality/purity of the
glass is a determining factor. Emission of lead shows a decreasing trend
that is in accordance with the attempts to avoid lead in glass as well as
in wine bottle seals.
Production of glass wool is expected to result in emission of approximately
the same pollutants as in production of container glass. NH3
shows a decreasing trend from 1996-2007 as can be verified by the decreasing
emission pr amount produced. However, the emission has
been stabilised on a higher level in 2008 and 2009. Emission of NOX has
been included for 2009 and the time-series will be completed. CO and
heavy metals are planned to be investigated and included in the inventory.
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