# 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 12

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

BAT for waste water management is to prevent, collect and separate waste water types, maximising internal recycling and using an adequate treatment for each final flow. This includes techniques utilising, e.g. oil interceptors, filtration or sedimentation. In this context, the following techniques can be used where the prerequisites mentioned are present:
avoiding the use of potable water for production lines
increasing the number and/or capacity of water circulating systems when building new plants or modernising/revamping existing plants
centralising the distribution of incoming fresh water
using the water in cascades until single parameters reach their legal or technical limits
using the water in other plants if only single parameters of the water are affected and further usage is possible
keeping treated and untreated waste water separated; by this measure it is possible to dispose of waste water in different ways at a reasonable cost
using rainwater whenever possible.

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Source: https://www.legislation.gov.uk/eudn/2012/135/annex/division/3/division/1.1/division/1.1.6/division/12 (the official version)
Page: https://openlegislation.uk/eu-decision-2012-135/annex/division-3/division-1.1/division-1.1.6/division-12
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.