Denmark's National Inventory Report 2005 - Submitted under the ...

which disaggregation level that can be achieved in the estimation of emissions from wastewater
handling and thus, as a part of the source description, the next section outlines the data.
8.3.1.1 Key data sources used in the emission calculations
The data used for the amount of industrial and municipal wastewater inlet and outlet amounts
and treatment processes is according to the official registration performed by DEPA in the report
series Wastewater from municipal and private wastewater treatment plants (Danish title: Spildevandsslam
fra kommunale og private renseanlæg), DEPA 1989, 1999, 2001, 2003 and 2004, and Point sources (Danish
title: Punktkilder), DEPA 1994, 1996, 1997, 1998, 1999, 2001, 2002 and 2003. Some of the data can
be found in the DEPA database Environment Data and for point sources before 2003 in the Statistics
Denmarks database StatBank Denmark. For the check method data on population is found in Statbank
Denmark. Data on protein consumption is found in the FAOSTAT database. Based on the national
registered wastewater data it is not possible to discriminate between industrial and municipal
wastewater in the country-specific calculations.
Until 2002 the Statistics Denmark was registering the load of nitrogen, phosphor and organic matter
in effluent wastewater from different types of point sources. Data on the nitrogen in effluents is
extracted from the Statistics Denmarks database and point source data reported within the Danish
Monitoring programme by the DEPA (report series from the DEPA with English title Point
Sources).
8.3.1.2 Summary of results
The net emission of CH is calculated as the gross emission minus the amount of CH potentially
4 4
recovered and flared or used for energy production. The recovered or not emitted methane potential
is calculated as the amount of sludge used for biogas (and thus included in the CO -emission
2
from the energy production) or combusted (and thus included in the calculation of CO -emission
2
from the combustion processes). A summary of the results on the emission of CH from 1990 to
4
2003 is given in Table 8.12
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