Grease interceptor


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Terms & Synonyms

Official WHO Definition

A device, usually outside a building, that retains grease and prevents it passing into the sewerage system (WHO 2006).See grease trap or grease recovery device

Other Definitions


Interpretations and Explanations

A grease interceptor uses the same physics, which grease and oil are lighter than water and will rise to the top when allowed to stand for a time. The devices all have a retention tank designed with an inverted weir at the outlet in order to allow the waste water out but not the grease. An interceptor is designed to separate and hold the grease within the interceptor. A grease interceptor must be emptied if its performance is reduced by a build up of grease. The grease can be removed periodically to a safe treatment or disposal site by either scooping or pumping (WHO 2006).


WHO (2006) Health aspects of plumbing

WHO Lexicon page (translations and examples)

See also

External Resources


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