fats oils and grease

What is FOG?

Commonly labeled Brown Grease in the industry, FOG stand for Fats, Oil & Grease. It is the collective term for the byproduct of animal fats (lard), vegetable oils and cooking grease from food preparation and dishwashing. FOG is created everyday in residential, commercial and industrial sources where food products are produced, prepared or consumed.

fats oils and grease

Where is FOG produced?

In residential areas, small amounts of FOG are generated when cooking meals. Towns and cities encourage their residents to minimize the amount of grease they put down the drain. However, in commercial food service establishments and industrial food processing facilities, FOG is generated in large quantities. Interceptors and wash down processes designed to capture FOG need to be constantly monitored and maintained to prevent FOG from passing into the sewer system.

fats oils and grease

Is FOG really a problem?

Even if FOG is properly collected, disposal is still a problem. Grease Trap Waste (GTW) is typically transported to and dumped at receiving stations located at a relatively few municipal sewage (POTW) or commercial wastewater treatment plants where haulers pay fees of $.05-$.30/gallon (US Data).

fats oils and grease

How does FOG impact sewer systems?

Three-quarters of the sewage collection infrastructure in the United States is so clogged and damaged by brown grease that sewers are estimated to be functioning at only half their capacity. According to the Wall Street Journal (June 2001), local governments spend $25 billion a year to remediate grease-related issues — such as blockages, backups and overflows — to keep the sewers flowing.

fats oils and grease

How do you dispose of FOG?

Traditional methods of treatment and disposal include dewatering, drying, composting, land application, incineration, and landfilling. All these methods are cost additive and do nothing to capture the rich energy resources that are available in the waste, nor do they reduce CO2 or methane emissions as FOG decomposes.

Only Greasezilla® “Gets the Grease Out” and produces a marketable biofuel and headworks-ready effluent water easily handled by treatment plants.