Grease Trap

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A grease trap is a receptacle that kitchen waste water flows through before entering the sanitary sewer lines. This receptacle captures, or "traps" grease.The industry term for animal fats and vegetable oils, is 10 to 15% less dense, or lighter than water. Grease is also miscible with water, which is to say it does not mix with water. Thus, grease and oils float on water. When kitchen waste water flows through a grease trap, the grease and oils rise to the surface and are trapped inside the receptacle using a system of baffles. The captured grease and oils fill the trap from the top down, displacing "clean" water out of the bottom of the trap and into the sanitary sewer line.