{
  "url": "https://openlegislation.uk/eu-decision-2017-2117/annex/division-10/division-10.2/division-BAT+81",
  "json_url": "https://openlegislation.uk/eu-decision-2017-2117/annex/division-10/division-10.2/division-BAT+81.json",
  "legislation": "eudn/2017/2117",
  "legislation_title": "Commission Implementing Decision (EU) 2017/2117 of 21 November 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for the production of large volume organic chemicals (notified under document C(2017) 7469) (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2017-2117",
  "path": "annex/division/10/division/10.2/division/BAT+81",
  "kind": "division",
  "number": "BAT 81:",
  "heading": "In order to reduce emissions to water of PCDD/F and copper from the oxychlorination process, BAT is to use technique a. or, alternatively, technique b together with an appropriate combination of techniques c., d. and e. given below.",
  "text": "Technique\nDescription\nApplicability\nProcess-integrated techniques\na.\nFixed-bed design for oxychlorination\nOxychlorination reaction design: in the fixed-bed reactor, catalyst particulates entrained in the overhead gaseous stream are reduced\nNot applicable to existing plants using the fluidised-bed design\nb.\nCyclone or dry catalyst filtration system\nA cyclone or a dry catalyst filtration system reduces catalyst losses from the reactor and therefore also their transfer to waste water\nOnly applicable to plants using the fluidised-bed design\nWaste water pretreatment\nc.\nChemical precipitation\nSee Section 12.2. Chemical precipitation is used to remove dissolved copper\nOnly applicable to plants using the fluidised-bed design\nd.\nCoagulation and flocculation\nSee Section 12.2\nOnly applicable to plants using the fluidised-bed design\ne.\nMembrane filtration (micro- or ultrafiltration)\nSee Section 12.2\nOnly applicable to plants using the fluidised-bed design\nTable 10.4\nBAT-AEPLs for emissions to water from EDC production via oxychlorination at the outlet of the pretreatment for solids removal at plants using the fluidised-bed design\nParameter\nBAT-AEPL(average of values obtained during 1 year)\nCopper\n0,4–0,6 mg/l\nPCDD/F\n< 0,8 ng I-TEQ/l\nTotal suspended solids (TSS)\n10–30 mg/l\nThe associated monitoring is in BAT 79.\nTable 10.5\nBAT-AELs for direct emissions of copper, EDC and PCDD/F to a receiving water body from EDC production\nThe lower end of the range is typically achieved when the fixed-bed design is used.\nThe average of values obtained during one year is calculated from the averages of values obtained during each day (at least three spot samples taken at intervals of at least half an hour).\nPurified EDC is the sum of EDC produced by oxychlorination and/or direct chlorination and of EDC returned from VCM production to purification.\nParameter\nBAT-AEL(average of values obtained during 1 year)\nCopper\n0,04–0,2 g/t EDC produced by oxychlorination\nEDC\n0,01–0,05 g/t EDC purified\nPCDD/F\n0,1– 0,3 μg I-TEQ/t EDC produced by oxychlorination\nThe associated monitoring is in BAT 79.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "The lower end of the range is typically achieved when the fixed-bed design is used."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "The average of values obtained during one year is calculated from the averages of values obtained during each day (at least three spot samples taken at intervals of at least half an hour)."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "Purified EDC is the sum of EDC produced by oxychlorination and/or direct chlorination and of EDC returned from VCM production to purification."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2017/2117/annex/division/10/division/10.2/division/BAT+81",
    "retrieved_at": "2026-11-01T15:13:18.480772+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."
}