According to the European Norm 1825, commercial kitchens generating wastewater must have pre-treatment plants to ensure that fat, oil and grease (FOG) are not discharged into the public sewerage network. Otherwise, very greasy wastewater puts the pipe systems and drainage equipment at risk. Grease and oils are deposited with other wastewater components on the walls of the pipes and can lead to corrosion, blockages and noxious smells. Hence, grease separators, also known as grease traps or grease interceptors, have to be installed to retain greasy wastewater. This applies to commercial kitchens in Airports, Hospitals, Restaurants, Hotels, shopping malls and Commercial buildings.
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