# Commission Implementing Decision of 9 December 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 production of chlor-alkali (notified under document C(2013) 8589) (Text with EEA relevance) (2013/732/EU), Division 8: Generation of waste

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

BAT 16: In order to reduce the quantity of spent sulphuric acid sent for disposal, BAT is to use one or a combination of the techniques given below. The neutralisation of spent sulphuric acid from chlorine drying with virgin reagents is not BAT.
Technique
Description
Applicability
a
Use on site or off site
The spent acid is used for other purposes, such as to control the pH in process and waste water, or to destroy surplus hypochlorite.
Applicable to sites with an on-site or off-site demand for spent acid of this quality.
b
Reconcentration
The spent acid is reconcentrated on site or off site in closed-loop evaporators under vacuum by indirect heating or by strengthening using sulphur trioxide.
Off-site reconcentration is restricted to sites where a service provider is located nearby.
The BAT-associated environmental performance level for the quantity of spent sulphuric acid sent for disposal, expressed as H2SO4 (96 wt-%), is ≤ 0,1 kg per tonne of chlorine produced.

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Source: https://www.legislation.gov.uk/eudn/2013/732/annex/division/4/division/8 (the official version)
Page: https://openlegislation.uk/eu-decision-2013-732/annex/division-4/division-8
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.