What is a Grease Trap?

Simply put, a grease trap is a receptacle that kitchen wastewater flows through before entering the foul sewer lines. This receptacle intercepts, captures, or “traps” grease.

Grease is 10 to 15 percent less dense than water. Grease also won’t mix with water. As a result, fats and oils float on top of water.

When kitchen wastewater flows through a grease trap, the grease and oils rise to the surface inside the trap and are trapped using a system of baffles. The captured grease and oils fill the trap from the top down, displacing “clean” water out of the bottom of the trap and into the sewer line.


Why do I need a Grease Trap?

While sewer drainage systems exist to take waste water to a treatment plant, there are some things it just was not designed to handle.  One of those is grease.


Grease, especially grease with animal fats, cools and solidifies at normal temperatures in pipes.  When this happens, blockages can form in the sewer drains, eventually causing backups in the drainage system. These blockages are a significant health risk to the public, so it’s in everyone’s best interest to keep our drains clear of grease.

For this reason, Irish Water and local authorities require the use of grease traps at locations that prepare food items to ensure grease does not ultimately cause blockages in the sewer system.

In some instances, installing a grease trapping system can save the food service establishment as well.  Any location with long plumbing runs to the sewer drainage system, such as a hotel, shopping centre, hospital  or restaurant inside of a large building is in danger of creating blockages in the internal pipes which could lead to backups, fines, and perhaps even downtime as the internal plumbing is repaired.

Even If a restaurant has a  grease trap which is not cleaned out on a timely basis, it will begin to allow too much grease into the sewer system, where it can cause blockages and sewage backups. This creates problems for wastewater systems as well as the food service establishment.

Improperly maintained grease traps (or the failure to install a grease trap when required) often leads to fines, down-time, and can lead to bad publicity.

All Grease-Trapping equipment requires regular cleaning and checks to ensure that they function properly and carry out the job they are designed to do ”protect the downstream drainage system”.


Selecting a Grease Trap Solution

A correctly sized grease trap is a vital piece of equipment in any commercial kitchen. This fact becomes all too evident when it stops working.

Planned Preventative maintenance ensures your drains and grease trap remain operational 24/7 and guarantees compliance with waste water regulations.

We can help.

From kitchen design stage to retro- fitting we can advise on the best solution for your business.

Our trade partnerships mean we have access to the most advanced grease trapping systems on the market which can reduce the amount of pump outs required at your premises.

These systems include the ability to remotely monitor FOG (fats, oils and grease) levels in your grease trap ensuring the grease trap is cleaned when it should be to maintain your compliance with all regulations.

Thermaco’s Trapzilla Hydromechanical Grease Recovery Units can retain up to 94% FOG as opposed to an industry norm of 25%.

More efficient grease trapping equipment ultimately means money saved by the Food Service Enterprise.


Grease Trap Cleaning Service

Our team of highly trained grease removal experts at Thorntons Tanker Services can clean grease traps and dispose of grease trap waste safely and efficiently.

We will ensure that your grease trap system operates efficiently, by means of a maintenance schedule, bringing the maximum benefit for your business, as well as ensuring that you are in compliance with Irish Water guidelines and Local Authority Management Programmes.


Our passive grease trap cleaning service includes the following

  • Pump out grease trap waste
  • Jet wash grease trap internally
  • Jet clean inlet/outlet drains (where accessible)
  • Refill grease trap with clean water
  • Remove waste to our composting facility
  • Issue site with a composting certificate

Our electric grease trap cleaning service includes the following

  • Pump out grease trap waste
  • Clean inlet/outlet drains (where possible)
  • Refill grease trap with clean water
  • Skim any remaining oil
  • Remove waste to our composting facility
  • Issue site with a composting certificate


Large Grease Traps

Thorntons Tanker Services is acutely aware of the financial pressures facing our customers.

If you are in charge of a food service establishment with a large grease trap you may expect high waste disposal costs.

This doesn’t have to be the reality.

We have invested in a new TBM dewatering unit to help reduce waste removal costs.

Our expert operators will pump out your grease trap, extract the water from the pumped waste and use this water to clean the grease trap and the drains.

This operation will decrease the volume of waste removed for disposal and in turn reduce the associated costs.



Difficult Locations

With Irish cities being so old the road networks and buildings are not always favourable to trucks. With this in mind Thorntons Tanker Services has invested in Irelands first City Whale. This is a jet vac combination unit built on a Ford Ranger which has a waste capacity of 500lt. It’s overall height is only 1.8m making access problems in car parks, a thing of the past.