# Commission Implementing Decision of 28 February 2012 establishing the best available techniques (BAT) conclusions under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions for iron and steel production (notified under document C(2012) 903) (Text with EEA relevance) (2012/135/EU), Division 39

Extent: E+W+S+N.I.

BAT for pelletisation plants is to treat the effluent water prior to discharge by using a combination of the following techniques:
I.. neutralisation
II.. flocculation
III.. sedimentation
IV.. sand filtration
V.. heavy metal precipitation.
The BAT-associated emission levels, based on a qualified random sample or a 24-hour composite sample, are:
In some cases, TOC is measured instead of COD (in order to avoid HgCl2 used in the analysis for COD). The correlation between COD and TOC should be elaborated for each pelletisation plant case by case. The COD/TOC ratio may vary approximately between two and four.
—
suspended solids
< 50 mg/l
—
chemical oxygen demand (COD)
< 160 mg/l
—
Kjeldahl nitrogen
< 45 mg/l
—
heavy metals
< 0,55 mg/l
(sum of arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), lead (Pb), zinc (Zn)).

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Source: https://www.legislation.gov.uk/eudn/2012/135/annex/division/3/division/1.3/division/2/division/39 (the official version)
Page: https://openlegislation.uk/eu-decision-2012-135/annex/division-3/division-1.3/division-2/division-39
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.