Toward Onsite Pretreatment of Effluent Containing Fats, Oils and Grease (FOG)
Historically, storage devices such as grease traps and interceptors (static and automatic, internal and external) have been
employed to reduce fats, oils and grease (FOG), to prevent onsite drain blockages and to reduce downstream accumulations. Many
jurisdictions are still encouraging or allowing these methods.
Onsite storage devices that only separate and retain FOG require emptying and transport of the contents to a proper disposal
facility. The difference is actual pretreatment vs. storage.