Grease Trap Dimensions and Structure: How to Choose the Right One

A 3-compartment grease trap is an effective solution for grease treatment, helping to minimize drain blockages and ensure environmental hygiene. However, not everyone knows how to choose the right grease trap size for their needs. In this article, we will help you understand the structure of a grease trap, its operating principle, benefits, and guide you on how to choose the most suitable grease trap.

1. What is a 3-Compartment Grease Trap?

A 3-compartment grease trap (or 3-compartment grease interceptor) is an essential device in kitchen wastewater treatment systems. This device helps remove grease and organic waste from wastewater before it is discharged into the environment, protecting the drainage system and reducing environmental pollution.

2. Structure of a 3-Compartment Grease Trap

The structure of a grease trap includes the following main components:

• Tank Body: Made from 304 stainless steel, PP plastic, or composite, ensuring corrosion resistance, rust prevention, and high durability.
• Compartment 1 – Debris Filter Compartment: Contains a debris filter basket to retain large solid objects such as bones, vegetables, tea leaves… removing coarse debris before the wastewater flows to the next compartment.
• Compartment 2 – Grease Separation Compartment: The most critical part where grease is separated from water by gravity. Grease floats to the surface, forming a layer that can be easily collected manually or automatically.
• Compartment 3 – Clean Water Compartment: The final compartment retains remaining impurities, ensuring the treated water meets standards before being discharged.
• Inlet and Outlet Pipes: Properly designed piping system to optimize grease separation performance.
• Lid: Easily removable for convenient cleaning and maintenance.
• Thanks to this design, a 3-compartment grease trap can effectively retain up to 90% of grease before wastewater enters the main drainage system.

3. Operating Principle of a 3-Compartment Grease Trap

The operating principle of a 3-compartment grease trap is based on the density difference between water and grease:

Wastewater enters the trap through the debris filter compartment, where solid waste is retained.

In the grease separation compartment, grease, being lighter than water, automatically floats to the surface. Users can easily remove this grease layer periodically.

The clean water compartment retains treated water before discharging it into the drainage system.

This process ensures cleaner wastewater discharge, reducing grease buildup in pipes that causes blockages.

4. Benefits of a 3-Compartment Grease Trap

• Prevents pipe blockages: Reduces grease adhesion to pipe walls.
• Reduces environmental pollution: Limits grease and debris discharge into the common drainage system.
• Saves maintenance costs: Significantly reduces pipe unclogging and wastewater system maintenance costs.
• Extends drainage system lifespan: Keeps the system running smoothly, reducing damage risks.

5. Common Sizes of 3-Compartment Grease Traps

• 30L-50L Capacity: Suitable for households and small eateries.
• 100L-200L Capacity: For restaurants and small industrial kitchens.
• 500L and above: Suitable for large-scale industrial kitchens and industrial zones.

6. How to Choose a Suitable Grease Trap

6.1. For Households

• Suitable Capacity: 20L-50L for small households, 80L-100L for larger households.
• Material: PP plastic or 304 stainless steel for corrosion resistance and safety.
• Installation Location: Under the kitchen sink to save space.
• Easy Cleaning: Choose types with easily removable lids.

6.2. For Restaurants and Eateries

• Suitable Capacity: 100L-300L depending on kitchen scale.
• Material: 304 stainless steel for high durability and rust resistance.
• Installation Location: Outside the kitchen or under an industrial sink.
• Effective Filtration System: Choose types with good debris filter and grease separation compartments.

6.3. For Industrial Kitchens, Hotels, Industrial Zones

• Suitable Capacity: Over 500L to meet large processing needs.
• Material: 304 stainless steel or composite for high load-bearing capacity.
• Installation Location: Outdoors or underground.
• Automatic Collection System: Helps quickly handle large amounts of grease.

7. Where Should You Buy a Reliable 3-Compartment Grease Separator?

If you’re looking for a high-quality 3-compartment grease separator, choose reputable suppliers. Ecoprotec specializes in providing genuine grease separators, designed according to modern standards.

📞 Contact us now at the hotline 0368172226 / 0834473166 for detailed consultation and pricing!