# Commission Implementing Decision (EU) 2019/2010 of 12 November 2019 establishing the best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for waste incineration (notified under document C(2019) 7987) (Text with EEA relevance), Division 1.5.2.3: Emissions of NOX, N2O, CO and NH3

Extent: E+W+S+N.I.

BAT 29. In order to reduce channelled NOX emissions to air while limiting the emissions of CO and N2O from the incineration of waste and the emissions of NH3 from the use of SNCR and/or SCR, BAT is to use an appropriate combination of the techniques given below.
Technique
Description
Applicability
(a)
Optimisation of the incineration process
See Section 2.1
Generally applicable.
(b)
Flue-gas recirculation
See Section 2.2
For existing plants, the applicability may be limited due to technical constraints (e.g. pollutant load in the flue-gas, incineration conditions).
(c)
Selective non-catalytic reduction (SNCR)
See Section 2.2
Generally applicable.
(d)
Selective catalytic reduction (SCR)
See Section 2.2
In the case of existing plants, the applicability may be limited by a lack of space.
(e)
Catalytic filter bags
See Section 2.2
Only applicable to plants fitted with a bag filter.
(f)
Optimisation of the SNCR/SCR design and operation
Optimisation of the reagent to NOX ratio over the cross-section of the furnace or duct, of the size of the reagent drops and of the temperature window in which the reagent is injected.
Only applicable where SNCR and/or SCR is used for the reduction of NOX emissions.
(g)
Wet scrubber
See Section 2.2.
Where a wet scrubber is used for acid gas abatement, and in particular with SNCR, unreacted ammonia is absorbed by the scrubbing liquor and, once stripped, can be recycled as SNCR or SCR reagent.
There may be applicability restrictions due to low water availability, e.g. in arid areas.
Table 6
BAT-associated emission levels (BAT-AELs) for channelled NOX and CO emissions to air from the incineration of waste and for channelled NH3 emissions to air from the use of SNCR and/or SCR
The lower end of the BAT-AEL range can be achieved when using SCR. The lower end of the BAT-AEL range may not be achievable when incinerating waste with a high nitrogen content (e.g. residues from the production of organic nitrogen compounds).
The higher end of the BAT-AEL range is 180 mg/Nm3 where SCR is not applicable.
For existing plants fitted with SNCR without wet abatement techniques, the higher end of the BAT-AEL range is 15 mg/Nm3.
(mg/Nm3)
Parameter
BAT-AEL
Averaging period
New plant
Existing plant
NOX
50–120
50–150
Daily average
CO
10–50
10–50
NH3
2–10
2–10
The associated monitoring is in BAT 4.

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Source: https://www.legislation.gov.uk/eudn/2019/2010/annex/division/1/division/1.5/division/1.5.2/division/1.5.2.3 (the official version)
Page: https://openlegislation.uk/eu-decision-2019-2010/annex/division-1/division-1.5/division-1.5.2/division-1.5.2.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.