What is BS EN 858-2- Light liquid separators about?  
Separator systems are used in a wide variety of situations to fulfill a number of different requirements. BS EN 858-2 discusses separator systems for light liquids.
BS EN 858-2 is the second part of the multi-series that applies to separator systems used to separate hydrocarbons of mineral origin from wastewater.
Note: BS EN 858-2 does not apply to grease and oils of vegetable or animal origin nor to the separation of emulsions or solutions.
Who is BS EN 858-2- Light liquid separators for? 
BS EN 858-2 on light liquid separators is useful for: 
- The manufacturing industry
- The oil and gas industry
- Fuel distribution facilities
- Light liquid separator manufacturers and designers
- Operators and installers of light liquid separators
- Environmental bodies
- Health and safety authorities
- Relevant government / municipal bodies
- Civil engineers
- Design engineers 
- Quality control personnel
- Waste management / recycling authorities
Why should you use BS EN 858-2- Light liquid separators?  
Light liquid separators are used to treat mineral oil-containing wastewater or as retention devices and thus prevent mineral oils from getting into drainage systems.
BS EN 858-2 provides guidance on the selection of nominal sizes, as well as the installation operation, and maintenance of light liquid separators manufactured in accordance with EN 858-1. BS EN 858-2 also gives advice on the suitability of cleansing agents if they are discharged to a separator. 
BS EN 858-2 is important to establish why a separator system is needed and what specific function it is expected to fulfill before selecting the appropriate size and type of installation.
Generally, separator systems are installed for one or more of the following reasons:
- To treat wastewater (trade effluent) from industrial processes, vehicle washing, cleansing of oil-covered parts or other sources, e.g. petrol station forecourts
- To treat oil contaminated rainwater (run-off) from impervious areas, e.g. car parks, roads, factory yard areas
- To retain any spillage of light liquid and to protect the surrounding area
BS EN 858-2 is a step towards environmental consciousness for a cleaner planet.
