Greasy waste is a serious concern that causes major problems to the drainage system. Restaurants and food processing industries produce a massive amount of viscous fats and cooking grease. If the wastewater from these industries is released to the common disposal system without undergoing treatment, it will combine with other solids present in the stream, resulting in the blockage of drain pipes.
If edible oil goes down the sink, the water supply will be contaminated. Since oil is lighter than water, it clots inside the pipe, which is dangerous for kitchen environments and sewage treatment plants. It is estimated that one litre of oil can pollute one million litres of water.
Grease trap, a plumbing device, intercepts most of the solids, grease, and oils present in the wastewater. The government authorities have made the installation of grease traps mandatory in restaurants and food processing industries. The installation of the device is not restricted to one specific location, it can be installed above the ground, underground, inside the kitchen or outside the building.
Grease traps separate and captures grease and solids before they enter the wastewater. They are effectual in decreasing the amount of FOG that enters the main wastewater system.
Grease traps consists of a large tank, to which the water from the drain flows to and settles down. Grease remains at the top and solid waste sinks to the bottom. The middle portion will be occupied by clear water, which flows through to a second tank and is discharged to the sewer system via a small pipe.
Grease traps are of various sizes; the smaller ones can serve individual sinks and the larger ones are for bigger facilities. They can be made of diverse materials such as stainless steel, plastics, concrete, and cast iron and the litre capacity ranges from 35 to 45,000 and greater.
Proper maintenance of grease traps is a must. Apart from preserving your drainage system, a well-maintained grease trap will prevent health and hygiene related issues.