What is a Petrol Interceptor and Why is it Important for Your Business?

Petrol Interceptor

If your business handles any kind of liquid waste, it’s important to have the proper equipment in place to prevent harmful substances from contaminating the environment. One such piece of equipment is a petrol interceptor, which is designed to intercept and separate petrol, oil and other hydrocarbon liquids from the wastewater before it is discharged into the drainage system.

A petrol interceptor is typically installed in locations where there is a risk of hydrocarbon pollution, such as fueling stations, car parks, and vehicle maintenance facilities. By intercepting these pollutants, a petrol interceptor helps to prevent them from entering the drainage system, which can cause significant harm to the environment.

How Does a Petrol Interceptor Work?

Petrol interceptors work by using gravity to separate the hydrocarbon liquids from the wastewater. When the wastewater enters the interceptor, it first passes through a series of baffles or screens that help to trap any solids or sediment that may be present. Then, the wastewater flows into the main chamber of the interceptor, where the hydrocarbon liquids float to the surface and are trapped by a floating device.

Once the hydrocarbon layer reaches a certain level, it is automatically drained into a separate collection chamber for disposal. Meanwhile, the clarified water is discharged into the drainage system.

Benefits of Installing a Petrol Interceptor

Installing a petrol interceptor can provide a number of benefits for your business, including:

  1. Compliance with Environmental Regulations: Many local authorities require businesses to install petrol interceptors to prevent pollution from liquid waste. By installing a petrol interceptor, you can ensure that your business is in compliance with these regulations.
  2. Protection of the Environment: By preventing hydrocarbon pollution, petrol interceptors help to protect the environment by keeping harmful substances out of the drainage system.
  3. Cost Savings: By intercepting petrol and other hydrocarbon liquids, you can avoid costly cleanup efforts and potential fines for non-compliance.

Choosing the Right Petrol Interceptor for Your Business

When choosing a petrol interceptor for your business, there are several factors to consider. These include:

  1. Size: The size of the interceptor will depend on the amount of wastewater your business generates and the flow rate of the drainage system.
  2. Material: Petrol interceptors are typically made from either plastic or concrete. Plastic interceptors are lighter and easier to install, while concrete interceptors are more durable and better suited for high-traffic areas.
  3. Maintenance Requirements: Petrol interceptors require regular maintenance to ensure they continue to function properly. Consider the maintenance requirements when choosing a petrol interceptor to ensure you can meet the necessary maintenance schedule.


In conclusion, installing a petrol interceptor is an important step for any business that handles liquid waste. By intercepting harmful substances and preventing them from entering the drainage system, you can protect the environment and avoid costly cleanup efforts. When choosing a petrol interceptor, consider factors such as size, material, and maintenance requirements to ensure you choose the right interceptor for your business’s needs.

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