The control of FOG (fats, oil and grease) has long been a requirement of many industrial wastewater treatment programs at wastewater treatment plants, with the primary regulation of FOG accumulation occurring at the local level.
When grease first enters the system, it is usually hot or warm. In a short period of time, it cools and coagulates on the system piping and in the lift stations. As grease solidifies on the interiors of pipes, sewerage flow becomes restricted. Grease buildup in the sewers causes capacity problems and blockages. Lift station pumps and sensors can be fouled by grease and malfunction.