What is a hydromechanical grease interceptor?
Hydromechanical grease interceptors (HGIs) (formerly named grease traps) treat kitchen wastewater from food service establishments (FSEs) using gravity separation aided by vented flow control. They are typically installed indoors and connected to one to four sinks in the kitchen and can be either above floor or below.
What is the difference between a hydromechanical grease interceptor and a gravity grease interceptor?
Gravity-type units are identified by their holding volume in gallons. The other category of interceptors is known as hydro- mechanical. These units increase separation performance through the use of flow control, air intake and baffles, which markedly decreases the time necessary to separate.
How do you size a hydromechanical grease interceptor?
The Hydromechanical Grease Interceptors are tested at their rated flow, which is their size designation i.e. a 20 GPM size is tested with a 20 GPM flow of grease laden water. With an expected maximum flow of 20 GPM you would use a 20 GPM size interceptor.
What is the purpose of a grease interceptor?
A grease interceptor is located between kitchen drain lines and sanitary sewer lines. Grease interceptors capture the FOG that enters sink drains from food service activities such as food preparation, dishwashing and cleaning.
What does a grease trap smell like?
The worst of the smell actually comes from the decomposition of the solid food deposits at the bottom of the grease trap: this is the layer which will cause bacteria to release pungent nitrates and rotten-egg-smelling sulphates as they digest it.
How effective is a grease trap?
The effectiveness of a grease trap depends on a number of factors including design, kitchen location, drainage systems, and size and kitchen practice. Each location and circumstance is unique. On average a single stage grease trap will retain from 50% to 90% of the FOG’s that enter it.
What size grease trap do I need for my restaurant?
The overall size of the trap is determined by the number of gallons of water flowing down your drains, which is your rate of incoming flow. You’ll also want to make sure your grease trap’s rated capacity is twice your flow rate. For instance, the rated capacity of a 20 gallon per minute (GPM) grease trap is 40 pounds.
How do you size a grease trap?
L x W x D to give you X as the capacity of the sink then X/231 to give you Y as the flow rate in gallons per minute (GPM). Then Y multiplied by 0.75 to give you the size of the grease trap you will need for your commercial kitchen.
Do grease interceptors need to be vented?
Grease interceptors must have a vented waste, sized in accordance with code requirements for venting traps, to retain a water seal and to prevent siphoning. One interceptor to serve multiple fixtures is recommended only where fixtures are located close together.
Do I need a grease trap?
In order to prevent blockages of the sewer system due to accumulated grease and oils discharged from food facilities, many wastewater treatment agencies require the installation of grease traps or interceptors. Every restaurant serving any type of greasy food or baked goodies (baked on premises) needs a grease trap.
Do houses have grease traps?
A grease trap is a long, rectangular box that is installed in the sewer line of a commercial kitchen. Most homes don’t actually need one because they don’t deal in the kind of volume that grease traps are built for. The most damaging of these substances is FOG (Fats, Oils, and Grease).
What is commercial grease trap?
Grease trap interceptors are passive devices that stop fats, oils, and grease from reaching a municipalities sanitary sewer system. Grease traps are often required by code, and must be installed by restaurants, as well as any other commercial cooking facilities.
What is a sewer grease trap?
grease trap. A trap in a drain or waste pipe to stop grease from entering a sewer system. Grease Trap. a chamber for separating and retaining fats and petroleum and other oils from effluent water by cutting the flow rate.
What is a kitchen grease trap?
Let’s start with the basics: A grease trap is something kitchen wastewater flows through before entering the sewer waste system. This receptacle — technically a grease interceptor — intercepts, captures, or “traps” grease.
What is a grease trap tank?
The grease trap is also known to many as a grease interceptor. It’s a device installed in the plumbing system that’s responsible for blocking grease, fat and other oily substances from entering the septic tank. Wax, fat, oil and other types of debris are obstructed because once they solidify inside the tank,…
