English (Honk KOng)Hong Kong S.A.R of China

10 January 2020

Why grease trap cleaning is vital

We discuss the importance of grease trap cleaning and maintenance, and why it is vital to ensure your drainage system continues to work properly.


Grease trap cleaning and maintenance is vital to ensure your trap continues to do its job. These simple devices are found in many commercial kitchens and protect drains and wastewater systems by preventing grease from flowing into the sewer system.

How do grease traps work?

Grease traps are designed to stop fat, oil and grease (FOG) waste from making it into the drainage system. This type of waste can wreak havoc on sewer and waste systems by solidifying and clogging lines.

Grease traps generally consist of a large tank into which wastewater flows and settles. Solids from the wastewater will sink whilst grease and FOG waste settles on the top, leaving clear water in the middle. Water then flows into a second tank where a screen traps the separated matter and discharges the water into the sewer.

What happens if grease traps become blocked?

Without proper grease trap cleaning, your system will not operate optimally and may even begin to back up. This can lead to terrible odors and is very unsanitary. 

Proper wastewater disposal should be a priority for any commercial kitchen but the sanitary consequences of a blocked grease trap can be particularly damaging in establishments such as hotels, hospitals and schools.

Improperly filtered wastewater can lead to FOG waste building up in drainage systems and sewers. This can be costly both financially and in terms of time to remedy. If a drain becomes clogged with grease, it may need to be manually treated at the source of the blockage.

How to clean and maintain your grease trap

Depending on the size of the establishment and the amount of grease generated traps should be cleaned every one to three months. More regular cleaning may be required to match the amount of FOG waste generated.

Systems should be emptied entirely, flushed and cleaned with a bacterial treatment to prevent the occurence of odor. For smaller systems, it may be possible for systems to be cleaned without the help of a professional plumber using domestic chemicals.

However for larger systems which deal with vast amounts of grease it is recommended that you employ the help of a professional. Special equipment and chemicals may be required to fully clean the system to ensure it will continue to work optimally.

What’s more, cleaning and maintaining grease traps can be a laborious task which requires a strong stomach. Many with the responsibility for the maintenance of these systems might prefer to employ a professional simply to avoid having to undertake such a demanding task. They might also need the task doing quickly with the minimal amount of downtime for the kitchen.

NCH Asia Pacific can provide a comprehensive grease trap control programme as part of our facilities maintenance and safety solutions. By working closely with you, we can advise on the best solution and assist you from start to finish, ensuring the minimal amount of stress and cost when it comes to grease trap cleaning and maintenance.

Visit our grease trap maintenance solutions page to find out more. Alternatively, you can use our online contact form to get in touch.


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