{
  "url": "https://openlegislation.uk/eu-decision-2018-1147/annex/division-3/division-3.1/division-3.1.2",
  "json_url": "https://openlegislation.uk/eu-decision-2018-1147/annex/division-3/division-3.1/division-3.1.2.json",
  "legislation": "eudn/2018/1147",
  "legislation_title": "Commission Implementing Decision (EU) 2018/1147 of 10 August 2018 establishing best available techniques (BAT) conclusions for waste treatment, under Directive 2010/75/EU of the European Parliament and of the Council (notified under document C(2018) 5070) (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2018-1147",
  "path": "annex/division/3/division/3.1/division/3.1.2",
  "kind": "division",
  "number": "3.1.2",
  "heading": "Emissions to air",
  "text": "BAT 34. In order to reduce channelled emissions to air of dust, organic compounds and odorous compounds, including H2S and NH3, BAT is to use one or a combination of the techniques given below.\nTechnique\nDescription\na.\nAdsorption\nSee Section 6.1.\nb.\nBiofilter\nSee Section 6.1.\nA pretreatment of the waste gas before the biofilter (e.g. with a water or acid scrubber) may be needed in the case of a high NH3 content (e.g. 5-40 mg/Nm3) in order to control the media pH and to limit the formation of N2O in the biofilter.\nSome other odorous compounds (e.g. mercaptans, H2S) can cause acidification of the biofilter media and necessitate the use of a water or alkaline scrubber for pretreatment of the waste gas before the biofilter.\nc.\nFabric filter\nSee Section 6.1. The fabric filter is used in the case of mechanical biological treatment of waste.\nd.\nThermal oxidation\nSee Section 6.1.\ne.\nWet scrubbing\nSee Section 6.1. Water, acid or alkaline scrubbers are used in combination with a biofilter, thermal oxidation or adsorption on activated carbon.\nTable 6.7\nBAT-associated emission levels (BAT-AELs) for channelled NH3, odour, dust and TVOC emissions to air from the biological treatment of waste\nEither the BAT-AEL for NH3 or the BAT-AEL for the odour concentration applies.\nThis BAT-AEL does not apply to the treatment of waste mainly composed of manure.\nThe lower end of the range can be achieved by using thermal oxidation.\nParameter\nUnit\nBAT-AEL(Average over the sampling period)\nWaste treatment process\nNH3\nmg/Nm3\n0,3-20\nAll biological treatments of waste\nOdour concentration\nouE/Nm3\n200-1 000\nDust\nmg/Nm3\n2-5\nMechanical biological treatment of waste\nTVOC\nmg/Nm3\n5-40\nThe associated monitoring is given in BAT 8.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "Either the BAT-AEL for NH3 or the BAT-AEL for the odour concentration applies."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "This BAT-AEL does not apply to the treatment of waste mainly composed of manure."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "The lower end of the range can be achieved by using thermal oxidation."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2018/1147/annex/division/3/division/3.1/division/3.1.2",
    "retrieved_at": "2026-11-01T15:13:01.289264+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}