Mechanical Biological Treatment (MBT) is playing an increasingly significant role in the UK and Europe for the treatment of mixed residual municipal solid waste, as a viable alternative to incineration-based energy from waste treatment solutions.

There are numerous generic types of MBT, many of those planned in the UK produce a solid fuel and may also have an anaerobic digestion stage producing additional energy from biogas combustion. MBT also aims to recover some recyclable materials.

Whilst MBT may be seen as a favourable option when compared with incineration, the authors’ experience with the procurement of waste treatment processes in the UK indicates that there are issues associated with MBT solutions that need to be considered before it can be universally accepted as preferable to incineration.

The limitations of MBT that should be considered when evaluating waste treatment options, to ensure any long-term contracts are suitable, sustainable and affordable.

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