{
  "url": "https://openlegislation.uk/eu-decision-2013-84/annex/division-2/division-1.5/division-10/division-1",
  "json_url": "https://openlegislation.uk/eu-decision-2013-84/annex/division-2/division-1.5/division-10/division-1.json",
  "legislation": "eudn/2013/84",
  "legislation_title": "Commission Implementing Decision of 11 February 2013 establishing the best available techniques (BAT) conclusions under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions for the tanning of hides and skins (notified under document C(2013) 618) (Text with EEA relevance) (2013/84/EU)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2013-84",
  "path": "annex/division/2/division/1.5/division/10/division/1",
  "kind": "division",
  "number": null,
  "heading": "Description",
  "text": "The application of an appropriate combination of the techniques described below. The combination of techniques can be implemented on site and/or off site, in two or three stages.\nTechnique\nDescription\nApplicability\na\nMechanical treatment\nScreening of gross solids, skimming of fats, oils, and greases and removal of solids by sedimentation.\nGenerally applicable for on-site and/or off-site treatment.\nb\nPhysico-chemical treatment\nSulphide oxidation and/or precipitation, COD and suspended solids removal by, e.g., coagulation and flocculation. Chromium precipitation by increasing pH to 8 or above using an alkali (e.g. calcium hydroxide, magnesium oxide, sodium carbonate, sodium hydroxide, sodium aluminate).\nGenerally applicable for on-site and/or off-site treatment.\nc\nBiological treatment\nAerobic biological waste water treatment using aeration, including the removal of suspended solids by, e.g., sedimentation, secondary flotation.\nGenerally applicable for on-site and/or off-site treatment.\nd\nBiological nitrogen elimination\nNitrification of ammoniacal nitrogen compounds to nitrates, followed by the reduction of nitrates to gaseous nitrogen.\nApplicable to plants with direct discharge to receiving water.\nDifficult implementation into existing plants where there are space limitations.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2013/84/annex/division/2/division/1.5/division/10/division/1",
    "retrieved_at": "2026-11-01T15:15:10.805176+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."
}