Grease Trap Waste (GTW)
A grease trap or interceptor is an engineered tank designed to remove Fats, Oils and Grease (FOG) and food-based solids and debris from food service establishments’ waste streams, preventing their entry into sewage collection networks. The grease interceptor captures those wastes and contains them until a waste hauler/pumper service can collect and properly dispose of them.
Grease Trap Waste Disposal
Grease Trap Waste (GTW) is typically transported to and dumped/tipped at receiving stations located at a relatively few municipal sewage (POTW) or commercial wastewater treatment plants where they pay fees of $.05-$.30/gallon (US Data). Common treatment methods include dewatering, drying, composting, land application, incineration, and landfill. All these methods are cost additive and do nothing to capture the rich energy resource that is available in the waste nor reduce CO2 or methane emissions as it decomposes. Only Greasezilla “Gets the Grease Out” and produces a marketable biofuel and headworks ready effluent water easily handled by treatment plants.
FOG – Fats, Oils and Greases
FOG is the collective term for the by-product of food preparation and dishwashing consisting of animal fats (lard), vegetable oils, and cooking grease. This product is commonly labeled “brown grease” in the industry. The traps that capture FOG are often neglected, which allows FOG to pass through into the sewer systems. Three-quarters of the sewage collection infrastructure in the U.S. is so clogged or damaged by brown grease that they work at half capacity, causing 40,000 sewage spills per year. According to the Wall Street Journal (June 2001), local governments spend $25 billion a year to remediate grease-related issues to keep the sewers flowing. Municipalities are cracking down on grease trap neglect, so there is a growing need for cost-effective GTW treatment. Also growing is a significant economic opportunity: Brown grease processed by Greasezilla™ contains the same BTUs as diesel fuel, burns clean, and qualifies as an advanced bio-fuel. It is a drop-in substitute for #6 fuel oil (bunker fuel).