<P> A grease trap ( also known as grease interceptor , grease recovery device 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 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 . </P>
<P> A grease trap ( also known as grease interceptor , grease recovery device 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 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 . </P>
what is the purpose of a grease trap
what is the purpose of a grease trap
intercept most greases and solids before they enter a wastewater disposal system
intercept most greases and solids before they enter a wastewater disposal system