Food Waste

Eco_Sustainable_Solutions_ Food-Waste

Recycling food waste, known as Anaerobic Digestion, is one of the key functions of the Eco site.

Our AD plant launched in Piddlehinton back in 2012 and after a recent expansion, now houses 25,000 tons of discarded food waste, fed to us by local councils and supermarkets alike.

Our Process

Our recycling process is innovative and cost effective. It involves excess low grade heat warming your leftovers and converting the resultant gas, into power.

Our AD process is outlined below:

1. The local authority organise a rubbish collection service where food waste caddies are collected and loaded onto rubbish trucks in bulk.


2. The food waste material is then taken to Piddlehinton and tipped in a loading bay.


3. The material is fed into a large blender where it is processed.


4. The food waste is mixed with water to create a liquid which has a porridge like consistency called digestate.


5. The food waste passes through a washing machine which is designed to extract the plastics and metals.


6. The waste is then fed into a holding tank where it is kept for 3 days. This allows for a consistent feed and operation of the plant. 


7. The substance is then pumped into the digester & stirred.   


8. The mix is kept in this tank for 55 days. A little bit is fed in and a little bit is fed out every day.   


9. From this mix a gas is produced of which 55% is methane. At this stage, the before mentioned digestate is heated to 72 degrees for 1 hour where it is pasteurised.


10.The gas is extracted and pumped through a carbon filter to scrub. After pateurisation is complete, the digestate material is then exported as an agricultural fertiliser.


11. The gas then passes to the enginges which drive the generator. The generator produces electricity .


12. The plant supplies power to the grid, powers the plant and the local mill. 

End Results

The two outputs from the Anerobic Digection process are as follows:

  • Biogas - a renewable power which fuels the plant and is supplied to the grid.
  • Digestate - A nutrient rich biofertliser, used on arable farm land to encourage crops and vegetation.

Additional Info

The food waste is processed using anaerobic digestion (AD). Not only is this a form of recycling but the process also creates a renewable energy that fuels the plant - win win!


Facts & Data

Our on-site plant is environmentally friendly and erases the offensive smells often associated with food waste.

Memberships & Accreditations

  • ORG Logo

  • WRA Logo
  • BSI Logo
  • ISO14001 Logo

If you would prefer to speak to one of our dedicated customer service team please call us 

01202 593601

Site Opening hours: Mon to Fri: 7am - 5pm & Sat: 7am - 12:00pm

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