5.D.2 - Industrial Wastewater Handling

Short description

Category Code	Method	AD	EF
5.D.2	T1	NS	D
Method(s) applied D Default T1 Tier 1 / Simple Methodology * T2 Tier 2* T3 Tier 3 / Detailed Methodology * C CORINAIR CS Country Specific M Model * as described in the EMEP/EEA Emission Inventory Guidebook - 2019, in category chapters. (source for) Activity Data NS National Statistics RS Regional Statistics IS International Statistics PS Plant Specific As Associations, business organisations Q specific Questionnaires (or surveys) M Model / Modelled C Confidential (source for) Emission Factors D Default (EMEP Guidebook) CS Country Specific PS Plant Specific M Model / Modelled C Confidential

NOx	NMVOC	SO2	NH3	PM2.5	PM10	TSP	BC	CO	Heavy Metals	POPs
NA	-/-	NA	NA	NA	NA	NA	NA	NA	NA	NA
L/- key source by Level only -/T key source by Trend only L/T key source by both Level and Trend -/- no key source for this pollutant IE emission of specific pollutant Included Elsewhere (i.e. in another category) NE emission of specific pollutant Not Estimated (yet) NA specific pollutant not emitted from this source or activity = Not Applicable * no analysis done

In category 5.D.2, NMVOC emissions from industrial wastewater handling are reported. The industrial section is covered by wastewaters from industrial processes. Main sectors are chemical industries, iron & steel industries, power generation, Food sector, Paper & Cardboard-production and “Other”-Industrial processes.

Method

Emissions reported under this category are calculated using the Tier 1 approach of the EMEP/EEA Guidebook 2019, where the emission factor (EF) is 15 mg/m³ wastewater (Part B, 5.D, chap. 3.2.2, Table 3-1, p. 7 EMEP/EEA, 2019: EMEP/EEA air pollutant emission inventory guidebook 2019, Copenhagen, 2019). This EF is multiplied with the total amount of wastewater (AD) treated in industrial wwt-plants, following the equation:

Emissions NMVOC = AD x EF (ibid., chap. 3.2.1)

Activity data

Total volumes of treated industrial wastewater are derived by the German statistical agency (Statistisches Bundesamt, Umweltnutzung und Wirtschaft. Tabellen zu den Umweltökonomischen Gesamtrechnungen. Teil 4: Wassereinsatz, Abwasser. Table 7.7 Statistisches Bundesamt, Umweltnutzung und Wirtschaft. Tabellen zu den Umweltökonomischen Gesamtrechnungen. Teil 4: Wassereinsatz, Abwasser. Table 7.7). The availability of the data starts in 1991 with new data for every following year, until 2001. Until then the data source is published on a three-year basis with new data only for the respective year of the update. Missing data are interpolated. Since the Wastewaterstatistic has not been updated since 2016, the data for Chemical Industry and Paper&Cardboard has been extrapolated until 2017 on the basis of an expert judgment, assuming for the Chemical Industry a yearly reduction of 1% and for Paper&Cardboard of 1,5%. For the remaining industries expert-judgement concluded that constant values since 2016 are deemed to be most probable.

Emisson factors

See method.
It should be noted that the described default emission factor was collected in Turkey for municipal wastewater treatment plants under specific climatic conditions in developing countries. The wastewater characteristics of the considered industries sometimes differ significantly from municipal wastewater.

Uncertainties

The AD from Statistisches Bundesamt have an uncertainty of ±3% (normal distribution) whereas the uncertainty for the EF, due to its range (5/50 mg/m³), is -70 / +210 % and the distribution lognormal.

Recalculations

Recalculations were not necessary.

For pollutant-specific information on recalculated emission estimates for Base Year and 2022, please see the recalculation tables following chapter 8.1 - Recalculations.

Planned improvements

Currently no improvements are planned.