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sector:waste:biological_treatment_composting:start [2022/10/26 10:31] – schillersector:waste:biological_treatment_composting:start [2023/03/16 14:14] (current) – [Recalculations] kotzulla
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 ==== Emission factors ==== ==== Emission factors ====
-The emission factor used for calculating NH<sub>3</sub> emissions is based on emission data from a research project [(Carsten Cuhls, Birte Mähl, Joachim Clemens; gewitra Ingenieurgesellschaft für Wissenstransfer mbH: Ermittlung der Emissionssituation bei der Verwertung von Bioabfällen; https://www.umweltbundesamt.de/publikationen/ermittlung-der-emissionssituation-bei-der; im Auftrag des Umweltbundesamtes, April 2015)]. The NH3-EF is 222 g/t and used for the whole time series. The use of abatement technologies (such as biofilters) are taken into account.+The emission factor used for calculating NH<sub>3</sub> emissions is based on emission data from a research project [(Carsten Cuhls, Birte Mähl, Joachim Clemens; gewitra Ingenieurgesellschaft für Wissenstransfer mbH: Ermittlung der Emissionssituation bei der Verwertung von Bioabfällen; https://www.umweltbundesamt.de/publikationen/ermittlung-der-emissionssituation-bei-der; im Auftrag des Umweltbundesamtes, April 2015)]. The NH<sub>3</sub>-EF is 222 g/t and used for the whole time series. The use of abatement technologies (such as biofilters) are taken into account.
  
 ===== Uncertainties ===== ===== Uncertainties =====
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 ===== Recalculations ===== ===== Recalculations =====
 +
 When preparing the current inventory data, statistical data are only available for the previous reporting year, as the Federal Statistical Office's waste statistics are one year behind schedule. The current reporting year must therefore be extrapolated on the basis of the previous year. The result of this approach is revised by the correct data in the following year. For this reason, annual recalculations are required for the previous year. Since the resulting recalculation is always very small, it is no longer reported here. When preparing the current inventory data, statistical data are only available for the previous reporting year, as the Federal Statistical Office's waste statistics are one year behind schedule. The current reporting year must therefore be extrapolated on the basis of the previous year. The result of this approach is revised by the correct data in the following year. For this reason, annual recalculations are required for the previous year. Since the resulting recalculation is always very small, it is no longer reported here.
  
 Additionally, a transmission error has been noticed during the annual quality assurance - the 1990 value for the annual data on biowaste was falsely entered for the year 1991. The error has been corrected. For 1991 and 1992 statistical data do not exist, which is why an intrapolation for the missing values has been performed. Additionally, a transmission error has been noticed during the annual quality assurance - the 1990 value for the annual data on biowaste was falsely entered for the year 1991. The error has been corrected. For 1991 and 1992 statistical data do not exist, which is why an intrapolation for the missing values has been performed.
 The correction leads to significantly higher emissions in 1990.  The correction leads to significantly higher emissions in 1990. 
 +
 +__Table 1: Revised biowaste activity data, in [kt]__
 +^    ^  1990  ^  1991  ^  1992  ^  2020  ^
 +^ current submission   |  1.515 |  1.809 |  2.103 |  9.134 |
 +^ previous submission  |    724 |  1.515 |  1.956 |  8.808 |
 +
 +
 +__Table 2: Accordingly revised NH<sub>3</sub> emissions, in [t]__
 +^   ^  1990  ^  1991  ^  1992  ^  2020  ^
 +^ current submission   |    336 |    402 |    467 |  2.028 |
 +^ previous submission  |    161 |    336 |    434 |  1.955 |
 +
  
 <WRAP center round info 60%> <WRAP center round info 60%>
-For **pollutant-specific information on recalculated emission estimates for Base Year and 2019**, please see the recalculation tables following [[general:recalculations:start|chapter 8.1 - Recalculations]].+For **pollutant-specific information on recalculated emission estimates for Base Year and 2020**, please see the recalculation tables following [[general:recalculations:start|chapter 8.1 - Recalculations]].
 </WRAP> </WRAP>