Mechanical & Biological Treatment

Our Mechanical and Biological Treatment (MBT) facility at Westbury, known as the Northacre Resource Recovery Centre, diverts waste from landfill and turns it into a valuable fuel for use in energy plants. The plant has the capacity to treat 90,000 tonnes of waste per annum.

How does it work?

The MBT process to treat waste employs natural microbes within the waste to accelerate the decomposition process. The process takes up to 14 days and is carried out inside a sealed building which is maintained under negative air pressure to avoid the release of odours to the environment.
Process air from the building is passed through filters prior to release into the atmosphere. As the waste dries, it loses over 30 per cent of its original weight. Once dried, it is further processed to remove metals for recycling. It is from the remaining material that a solid recovered fuel (SRF) is manufactured. The SRF is a dry and sanitised material that can be safely handled. A small amount of ‘reject’ material not suitable for SRF production is landfilled.

What happens to the SRF?

Currently the solid recovered fuel (SRF) is transported by road to port and then shipped to Europe for use in renewable energy plants. Hills propose to design, build and operate an ATT gasification facility next door to Northacre RRC. Click here for more information.

Click here to visit the Northacre Resource Recovery Centre website.