Grease traps are a type of equipment used in the food industry. They serve to separate fat and oil from wastewater. They are essential for protecting your sewage lines from contamination and from becoming clogged with fat mass. Grease traps come in various different options with regard to it's size and design. Some have several cleaning sections and tanks for collecting waste. In smaller businesses they are typically installed under sinks, while in large enterprises underground plants are used with automatic removal systems based on sensors.