{
  "url": "https://openlegislation.uk/eu-decision-2017-302/annex/division-3/division-1/division-1.9/division-BAT+13",
  "json_url": "https://openlegislation.uk/eu-decision-2017-302/annex/division-3/division-1/division-1.9/division-BAT+13.json",
  "legislation": "eudn/2017/302",
  "legislation_title": "Commission Implementing Decision (EU) 2017/302 of 15 February 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for the intensive rearing of poultry or pigs (notified under document C(2017) 688) (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2017-302",
  "path": "annex/division/3/division/1/division/1.9/division/BAT+13",
  "kind": "division",
  "number": "BAT 13",
  "heading": null,
  "text": "In order to prevent or, where that is not practicable, to reduce odour emissions and/or odour impact from a farm, BAT is to use a combination of the techniques given below.\nA description of the techniques is given in Sections 4.4 and 4.11.\nTechnique\nApplicability\na\nEnsure adequate distances between the farm/plant and the sensitive receptors.\nMay not be generally applicable to existing farms/plants.\nb\nUse a housing system which implements one or a combination of the following principles:\nkeeping the animals and the surfaces dry and clean (e.g. avoid feed spillages, avoid dung in lying areas of partly slatted floors);\nreducing the emitting surface of manure (e.g. use metal or plastic slats, channels with a reduced exposed manure surface);\nremoving manure frequently to an external (covered) manure store;\nreducing the temperature of the manure (e.g. by slurry cooling) and of the indoor environment;\ndecreasing the air flow and velocity over the manure surface;\nkeeping the litter dry and under aerobic conditions in litter-based systems.\nDecreasing the temperature of the indoor environment, the air flow and the velocity may not be applicable due to animal welfare considerations.\nSlurry removal by flushing is not applicable to pig farms located close to sensitive receptors due to odour peaks.\nSee applicability for animal housing in BAT 30, BAT 31, BAT 32, BAT 33 and BAT 34.\nc\nOptimise the discharge conditions of exhaust air from the animal house by using one or a combination of the following techniques:\nincreasing the outlet height (e.g. exhaust air above roof level, stacks, divert air exhaust through the ridge instead of through the low part of the walls);\nincreasing the vertical outlet ventilation velocity;\neffective placement of external barriers to create turbulence in the outgoing air flow (e.g. vegetation);\nadding deflector covers in exhaust apertures located in low parts of walls in order to divert exhaust air towards the ground;\ndispersing the exhaust air at the housing side which faces away from the sensitive receptor;\naligning the ridge axis of a naturally ventilated building transversally to the prevailing wind direction.\nAlignment of the ridge axis is not applicable to existing plants.\nd\nUse an air cleaning system, such as:\n1.. Bioscrubber (or biotrickling filter);\n2.. Biofilter;\n3.. Two-stage or three-stage air cleaning system.\nThis technique may not be generally applicable due to the high implementation cost.\nApplicable to existing plants only where a centralised ventilation system is used.\nA biofilter is only applicable to slurry-based plants.\nFor a biofilter, a sufficient area outside the animal house is needed to accommodate the filter packages.\ne\nUse one or a combination of the following techniques for storage of manure:\n1.\nCover slurry or solid manure during storage;\nSee applicability of BAT 16.b for slurry.\nSee applicability of BAT 14.b for solid manure.\n2.\nLocate the store taking into account the general wind direction and/or adopt measures to reduce wind speed around and above the store (e.g. trees, natural barriers);\nGenerally applicable.\n3.\nMinimise stirring of slurry.\nGenerally applicable.\nf\nProcess manure with one of the following techniques in order to minimise odour emissions during (or prior to) landspreading:\n1.\nAerobic digestion (aeration) of slurry;\nSee applicability of BAT 19.d.\n2.\nCompost solid manure;\nSee applicability of BAT 19.f.\n3.\nAnaerobic digestion.\nSee applicability of BAT 19.b.\ng\nUse one or a combination of the following techniques for manure landspreading:\n1.\nBand spreader, shallow injector or deep injector for slurry landspreading;\nSee applicability of BAT 21.b, BAT 21.c or BAT 21.d.\n2.\nIncorporate manure as soon as possible.\nSee applicability of BAT 22.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "A description of the techniques is given in Sections 4.4 and 4.11."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2017/302/annex/division/3/division/1/division/1.9/division/BAT+13",
    "retrieved_at": "2026-11-01T15:13:35.783160+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."
}