What is a grease interceptor?
An interceptor is a vault with a minimum capacity of between 500 and 750 gallons that is located on the exterior of the building. The vault includes a minimum of two compartments, and flow between each compartment is through a 90° fitting designed for grease retention. The capacity of the interceptor provides adequate residence time so that the wastewater has time to cool, allowing any remaining grease not collected by the traps time to congeal and rise to the surface where it accumulates until the interceptor is cleaned. See How It Works for a description of how the various components of a grease interceptor function.
An interceptor is an outdoor, underground vault, typically with a capacity of 500 gallons or more, designed for the purpose of removing fats, oils, and grease and preventing them from entering the sanitary sewer system. The vaults have a two or three compartment system. The wastewater flows between each compartment and is given enough time to cool, allowing any remaining grease to congeal and rise to the surface.
