Trap designed to intercept most greases and solids before they enter a wastewater disposal system
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Grease trap for greywater in Lima, Peru
A grease trap (also known as grease interceptor, grease recovery device, grease capsule and grease converter) is a plumbing device (a type of trap) designed to intercept most greases and solids before they enter a wastewater disposal system. Common wastewater contains small amounts of oils which enter into septic tanks and treatment facilities to form a floating scum layer. This scum layer is very slowly digested and broken down by microorganisms in the anaerobic digestion process. Large amounts of oil from food preparation in restaurants can overwhelm a septic tank or treatment facility, causing the release of untreated sewage into the environment. High-viscosity fats and cooking grease such as lard solidify when cooled, and can combine with other disposed solids to block drain pipes.
Grease traps have been used since Victorian days: Nathaniel Whiting obtained the first patent in the late 1800s. The traps reduce the amount of fats, oils, greases, and solids (FOGS) that enter sewers. They consist of boxes within the drain run that flows between the sinks in a kitchen and the sewer system. They have only kitchen waste water flowing through them and do not serve any other drainage system, such as toilets. They can be made from various materials, such as stainless steel, plastics, concrete and cast iron. They range from 35-liter capacity to 45,000 liters and greater. They can be located above ground, below ground, inside the kitchen, or outside the building.
A greasetrap (also known as grease interceptor, grease recovery device, grease capsule and grease converter) is a plumbing device (a type of trap) designed...
room temperature Brown grease, waste vegetable oil, animal fat, grease, etc. that is recovered from a greasetrap Yellow grease, in rendering, used frying...
by the hood. In most exhaust hoods, a filtration system removes grease (the greasetrap) and other particles. Although many vent hoods exhaust air to the...
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have traps in their drains; these traps are either internal or external to the fixtures. Traps are pipes which curve down then back up; they "trap" a small...
Longreach, Queensland, the son of a sheep shearer, and formerly worked as a greasetrap pumper. Barron has released five DVDs, entitled Carl Barron LIVE!, Carl...
fixtures may allow sewer gas to enter a home due to evaporation of water in the trap, especially in warm weather. The result is the most common means of sewer...
Cast iron cookware is normally seasoned with oil or grease and heat, which causes the oil or grease to be absorbed into the pores of the cookware, thereby...
treatment, where the boiled water is poured through a piece of cloth to trap undesired residuals. Additionally, the use of machinery to work on desalinization...
sewer, a large pipe in urban sanitary sewers Grease interceptor or greasetrap Petrol interceptor, a trap to separate hydrocarbons from rainwater runoff...
Blockage prevention campaigns or regulations (e.g. requiring the use of grease interceptors by some customers) may also be necessary. The maintenance requirements...
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