Anaerobic digestion

Last year we received planning consent to develop an anaerobic digestion (AD) facility on our Poplars landfill site to replace an existing open composting operation. Construction has started and the new plant will be operational by early next year.

Anaerobic digestion is a treatment for food waste diverted from landfill in which it is used to generate renewable energy.

The existing planning consent is for a facility that will comprise a main waste reception building, four digestion tanks to produce biogas from waste and four electricity generators that will use the biogas as a fuel to drive them.

The system will produce 4 – 5 megawatts of electricity and approximately 37,000 tonnes of soil improver/compost type material each year.

It can treat 80,000 tonnes a year of the 100,000 tonnes or so of food waste produced in the region that is currently going to the landfill.

The response from customers has been very encouraging. More companies want to separate their food waste so we believe we should increase the capacity of this facility so it can handle more. This increase in capacity can be provided within the boundary of the existing AD plant and the main change will just be the addition of one extra digestion tank.

To achieve this, our planning application which was lodged with Staffordshire County Council in June, will feature this one additional tank and a re-configuration of the gas powered generators. All will be contained within the existing approved site plan (see diagrams below).

Traffic to the already approved AD would only increase by around 10 vehicles a day. This will be more than offset by the cessation of other activities (composting, wood shredding and hardcore recycling) meaning there would be no overall increase. The potential re-routing of landfill lorry traffic through our new Kingswood site would also remove the vast majority of it from the current landfill access

 

Kingswood AD facility layout

Existing/new plans (click to enlarge in a new tab/window)

Kingswood facility CGI image

Anaerobic digestion is a treatment for food waste diverted from landfill in which it is used to generate renewable energy.