OpenLegislation

Division 5 Monitoring of emissions

United Kingdom

Original text. Later amendments are not shown.

BAT 7: BAT is to monitor emissions to air and water by using monitoring techniques in accordance with EN standards with at least the minimum frequency given below. If EN standards are not available, BAT is to use ISO, national or other international standards that ensure the provision of data of an equivalent scientific quality.

Monitoring encompasses both continuous and periodic monitoring as indicated.
Environmental mediumSubstance(s)Sampling pointMethodStandard(s)Minimum monitoring frequencyMonitoring associated with
AirChlorine and chlorine dioxide, expressed as Cl2 f1 Outlet of chlorine absorption unitElectrochemical cellsNo EN or ISO standard availableContinuous—
Absorption in a solution, with subsequent analysisNo EN or ISO standard availableYearly (at least three consecutive hourly measurements)BAT 8
WaterChlorateWhere the emission leaves the installationIon chromatographyEN ISO 10304–4MonthlyBAT 14
ChlorideBrine purgeIon chromatography or flow analysisEN ISO 10304–1 or EN ISO 15682MonthlyBAT 12
Free chlorine Close to the sourceReduction potentialNo EN or ISO standard availableContinuous—
Where the emission leaves the installationFree chlorineEN ISO 7393–1 or –2MonthlyBAT 13
Halogenated organic compoundBrine purgeAdsorbable organically-bound halogens (AOX)Annex A to EN ISO 9562YearlyBAT 15
MercuryOutlet of the mercury treatment unitAtomic absorption spectrometry or atomic fluorescence spectrometryEN ISO 12846 or EN ISO 17852DailyBAT 3
SulphateBrine purgeIon chromatographyEN ISO 10304–1Yearly—
Relevant heavy metals (e.g. nickel, copper)Brine purgeInductively-coupled plasma optical emission spectrometry or inductively-coupled plasma mass spectrometryEN ISO 11885 or EN ISO 17294-2Yearly—

Annotations

Footnotes

f1

Monitoring encompasses both continuous and periodic monitoring as indicated.