Andel Grease Separators

Andel grease separators protect the environment from harmful FOG (fats, oils and grease) pollution

Andel’s HDPE grease separator tanks offer long-term protection, helping you meet legal obligations and environmental best practice

Andel grease separators are designed for underground installation. The density difference between water and grease naturally separates the two as wastewater flows through the separator. Fat and oil particles float on the surface of the wastewater creating a layer of increasing thickness which should be regularly removed, while heavy substances fall to the bottom forming a sludge.

Designed to contain, built to perform, the seamless HDPE body with reinforced ribbing ensures structural integrity under pressure and prevents leaks or contamination. Installation is quicker, safer and more cost-effective than traditional GRP alternatives.

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Andel Grease Separators

How it works

As wastewater flows through the separator, solid food particles settle in the integrated desilter chamber.

Lighter substances such as fats, oils and grease rise to the surface and are trapped in the main separation zone. This process protects downstream drainage and ensures only pre-separated water continues through the system.

Regular maintenance is required to remove accumulated grease and solids – helping you maintain hygiene, efficiency and compliance.

Engineered to protect

Two-stage gravity process to BS EN 1825:
Integrated desilter chamber – heavy food particles settle out.
Grease separation zone – fats, oils and grease rise and are retained by a weir baffle.
Odour-tight, quick-access lid for easy pump-out and inspection.
Optional overflow and fat-layer alarms for proactive maintenance.
Keeps downstream drainage clear, safeguarding hygiene, efficiency and compliance.

Typical applications

Restaurants and commercial kitchens
Hotels, pubs and cafés
Takeaways and food courts
Schools and universities
Food processing and packaging plants
Bakeries and catering facilities
Hospitals and healthcare kitchens
Industrial food production

Why choose an Andel Grease Separator?

Effectively separates FOG from wastewater
Prevents pipe blockages and costly drain issues
Integrated desilter chamber improves performance
Durable HDPE construction – resistant to chemicals, temperature and corrosion
Range of sizes and capacities to suit any installation
Lightweight and easy to transport and install
Treated effluent meets regulatory standards
Optional alarms for overflow and fat layer monitoring
10-year tank warranty
Fully compliant with UK and EU standards
Easy-access design for hassle-free cleaning
Fully compliant with EN 1825 standards

Anti-foaming system for starch wastewater

Andel grease separators can be fitted with an optional anti-foaming system to manage foaming caused by wastewater containing potato or vegetable starch. This feature is only required when the separator is combined with a starch separator.

Foaming typically occurs during the discharge of effluent from peeling machines. When the machine starts, a valve – operated manually or automatically – releases running water into the separator. The water is delivered through a spray fitting, helping to suppress foam formation and maintain efficient separator performance.

Image of grease_separators_illustrations_1-1.png

Andel Grease Separators GST1.5 and GST2

Features and benefits:

Material: HDPE
Compliant with BS EN 1825 – the European standard for grease separators used in commercial and industrial kitchens
1 manhole: 600mm
Resistant to aggressive fatty acids
Easy to clean
Handlles fitted for easy lifting
Gas-tight (odour reduction)
Sold with cover PKP 600

Additional optional equipment:

Extension shaft NSP 600
If a larger desilter chamber is needed, it is possible to use the suspension separator (capacity 1500 to 30000 L)
Overflow alarms and fat layer thickness alarms

Image of grease_separators_illustrations_2.png

Andel Grease Separators GST3, GST4 and GST6

Features and benefits:

Material: HDPE
Compliant with BS EN 1825 – the European standard for grease separators used in commercial and industrial kitchens.
Resistant to aggressive fatty acids
Easy to clean
Handlles fitted for easy lifting
Gas-tight (odour reduction)
Sold with cover PKP 950

Additional optional equipment:

Extension shaft NSP 950
Overflow alarms and fat layer thickness alarms
Anti-foam system – a functional separator feature designed to minimise starch-based foam formation through targeted spray application
Round adapter for cast
iron manhole
Solenoid valve for switching on anti-foam system
If a larger desilter chamber is needed, it is possible to use the suspension separator (capacity 1500 to 30000 L)
Optional bottom sediment extraction system – enables removal of sludge without lifting the cover, preventing the release of unpleasant odours.

Regulatory Compliance

BS EN 1825-1 & 2 – Design and performance of grease separators for commercial kitchens
UK Building Regulations Part H – Grease separators required for hot food premises (clause 2.21)
Water Industry Act 1991, s.111 – Offence to discharge fats, oils or grease to sewer
Environmental Protection Act 1990, s.34 – Duty of Care for handling and disposal of FOG waste
Food Safety Act 1990 – Hygiene and waste management inspections by local authorities
Animal By-Products Regulation (EC) 1774/2002 – Licensed collection of waste cooking oil

Ongoing after-sales support

With over 30 years’ experience, Andel offers full after-sales support including planned emptying schedules and inspections.

Andel recommends fitting high-level grease alarms to monitor tank conditions between maintenance intervals and to prevent overflow or system failure.

Customisable to fit your site

All grease separators are compatible with a range of risers, access shafts and manhole cover options to suit different installation depths and surface finishes. Ask for details.

Frequently asked questions

What is the primary purpose of the Andel Grease and Starch Separator? + -

It is designed to separate fats, oils, grease (FOG), and starch from wastewater before it enters the public drainage system, preventing blockages and environmental pollution.

What specific industries or establishments benefit from this product? + -

It is ideal for commercial kitchens, restaurants, hotels, bakeries, school canteens, and food processing facilities that generate FOG and starch.

How does the separator work? + -

It works by slowing down the wastewater flow, allowing FOG (being lighter) to float to the surface and starch/solids (being heavier) to sink to the bottom, separating them from the water.

What are the main features of the separator's design? + -

It is a robust, compact, and highly efficient unit with an integrated desilter chamber. The grease separator is easy to install and maintain.

What materials is the separator constructed from? + -

The separator is manufactured from high-density polyethylene (HDPE) for strength, chemical resistance and long-term reliability.

Can the separator be installed above or below ground? + -

Below ground installation.

What are the benefits of using an Andel Grease and Starch Separator? + -

It helps businesses comply with environmental regulations, reduces the risk of drain blockages and foul odours, and protects public sewers from FOG and starch build-up.

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Andel Grease Separators

How it works

Engineered to protect

Typical applications

Why choose an Andel Grease Separator?

Anti-foaming system for starch wastewater

Andel Grease Separators GST1.5 and GST2

Andel Grease Separators GST3, GST4 and GST6

Regulatory Compliance

Ongoing after-sales support

Customisable to fit your site

Frequently asked questions

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