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sector:waste:biological_treatment_composting:start [2021/01/25 13:56] – schillersector:waste:biological_treatment_composting:start [2023/03/16 14:14] (current) – [Recalculations] kotzulla
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 ===== Short description ===== ===== Short description =====
  
-Within NFR category **5.B.1 - Biological treatment of waste - Composting**, __ammonia (NH3) emissions from composting__ of organic wastes are reported.+Within NFR category **5.B.1**, __ammonia (NH<sub>3</sub>) emissions from composting__ of organic wastes are reported.
  
-^ NFR-Code  ^ Name of Category              ^ Method  ^ AD  ^ EF  ^ Key Category<sup>1</sup>  ^ +^ Category Code  ^  Method                                                                           ||||^  AD                                        ||||^  EF                              ||||| 
-| 5.B.1       | Composting  | CS      | NS  | CS   | //no key category//       |+| 5.B.1          |  CS                                                                               |||||  NS                                        |||||  CS                              ||||| 
 +^                ^  NO<sub>x</sub>  ^  NMVOC  ^  SO<sub>2</sub>  ^  NH<sub>3</sub>  ^  PM<sub>2.5</sub>  ^  PM<sub>10</sub>  ^  TSP  ^  BC  ^  CO  ^  Pb  ^  Cd  ^  Hg  ^  Diox  ^  PAH  ^  HCB  ^ 
 +| Key Category:  |  -               |  -      |  -               |  -/-             |  -                 |  -                |  -    |  -   |  -   |  -   |  -   |  -   |  -     |  -    |  -    | 
 + {{page>general:Misc:LegendEIT:start}} 
 +\\   |
  
 Separately collected organic waste (biowaste) from e.g. households, public garden and park service, food industry, restaurants, canteens and from agriculture can be treated in two different ways: Separately collected organic waste (biowaste) from e.g. households, public garden and park service, food industry, restaurants, canteens and from agriculture can be treated in two different ways:
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 The produced compost is used as fertilizer or soil improver in agriculture or horticulture and also in private gardening.\\ The produced compost is used as fertilizer or soil improver in agriculture or horticulture and also in private gardening.\\
-In Germany about two thirds of the organic waste is treated in composting plants and ammonia (NH3) is an important emission to air.+In Germany about two thirds of the organic waste is treated in composting plants and ammonia (NH<sub>3</sub>) is an important emission to air.
  
 ===== Method ===== ===== Method =====
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 ==== Activity Data ==== ==== Activity Data ====
-Official statistical data (Statistisches Bundesamt, Fachserie 19, Reihe 1: Abfallentsorgung (Waste management), Table 2.1; ((Statistisches Bundesamt, Fachserie FS 19, Reihe 1: Abfallentsorgung; Wiesbaden; URL: https://www.destatis.de/DE/Publikationen/Thematisch/UmweltstatistischeErhebungen/Abfallwirtschaft/Abfallentsorgung.html))) are used for the estimation. The data are published on a yearly basis with an exception for the actual year of reporting. The activity data for the actual year of reporting are obtained, initially, by carrying the relevant data from the previous year forward, in unchanged form. In the following year, when the actual activity data for the given year becomes available, they replace the data that were carried forward. This procedure has only a very small impact on the total emissions in the relevant current report year.+Official statistical data (Statistisches Bundesamt, Fachserie 19, Reihe 1: Abfallentsorgung (Waste management), Table 2.1; [(Statistisches Bundesamt, Fachserie 19, Reihe 1: Abfallentsorgung; Wiesbaden; URL: https://www.destatis.de/DE/Publikationen/Thematisch/UmweltstatistischeErhebungen/Abfallwirtschaft/Abfallentsorgung.html)]) are used for the estimation. The data are published on a yearly basis with an exception for the actual year of reporting. The activity data for the actual year of reporting are obtained, initially, by carrying the relevant data from the previous year forward, in unchanged form. In the following year, when the actual activity data for the given year becomes available, they replace the data that were carried forward. This procedure has only a very small impact on the total emissions in the relevant current report year.
  
 ==== Emission factors ==== ==== Emission factors ====
-The emission factors used for calculating NH3 emissions are 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 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 extremely 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. 
 +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%> 
 +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>
  
 ===== Planned improvements ===== ===== Planned improvements =====
 Currently no improvements are planned. Currently no improvements are planned.
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