# Commission Implementing Decision of 9 October 2014 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions, for the refining of mineral oil and gas (notified under document C(2014) 7155) (Text with EEA relevance) (2014/738/EU), Division BAT 11: In order to reduce water consumption and the volume of contaminated water, BAT is to use all of the techniques given below.

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

Technique
Description
Applicability
(i)
Water stream integration
Reduction of process water produced at the unit level prior to discharge by the internal reuse of water streams from e.g. cooling, condensates, especially for use in crude desalting
Generally applicable for new units. For existing units, applicability may require a complete rebuilding of the unit or the installation
(ii)
Water and drainage system for segregation of contaminated water streams
Design of an industrial site to optimise water management, where each stream is treated as appropriate, by e.g. routing generated sour water (from distillation, cracking, coking units, etc.) to appropriate pretreatment, such as a stripping unit
Generally applicable for new units. For existing units, applicability may require a complete rebuilding of the unit or the installation
(iii)
Segregation of non-contaminated water streams (e.g. once-through cooling, rain water)
Design of a site in order to avoid sending non-contaminated water to general waste water treatment and to have a separate release after possible reuse for this type of stream
Generally applicable for new units.
For existing units, applicability may require a complete rebuilding of the unit or the installation
(iv)
Prevention of spillages and leaks
Practices that include the utilisation of special procedures and/or temporary equipment to maintain performances when necessary to manage special circumstances such as spills, loss of containment, etc.
Generally applicable

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Source: https://www.legislation.gov.uk/eudn/2014/738/annex/division/3/division/1.1/division/1.1.7/division/BATn1 (the official version)
Page: https://openlegislation.uk/eu-decision-2014-738/annex/division-3/division-1.1/division-1.1.7/division-BATn1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.