# Commission Implementing Decision (EU) 2016/1032 of 13 June 2016 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for the non-ferrous metals industries (notified under document C(2016) 3563) (Text with EEA relevance), Division 1.10.2: Water emissions

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

Techniques
Descriptions
Chemical precipitation
The conversion of dissolved pollutants into an insoluble compound by adding chemical precipitants. The solid precipitates formed are subsequently separated by sedimentation, flotation or filtration. If necessary, this may be followed by ultrafiltration or reverse osmosis. Typical chemicals used for metal precipitation are lime, sodium hydroxide, and sodium sulphide.
Sedimentation
The separation of suspended particles and suspended material by gravitational settling
Flotation
The separation of solid or liquid particles from waste water by attaching them to fine gas bubbles, usually air. The buoyant particles accumulate at the water surface and are collected with skimmers
Filtration
The separation of solids from waste water by passing them through a porous medium. Sand is the most commonly used filtering medium
Ultrafiltration
A filtration process in which membranes with pore sizes of approximately 10 μm are used as the filtering medium
Activated carbon filtration
A filtration process in which activated carbon is used as the filtering medium
Reverse osmosis
A membrane process in which a pressure difference applied between the compartments separated by the membrane causes water to flow from the more concentrated solution to the less concentrated one

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Source: https://www.legislation.gov.uk/eudn/2016/1032/annex/division/1.10/division/1.10.2 (the official version)
Page: https://openlegislation.uk/eu-decision-2016-1032/annex/division-1.10/division-1.10.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.