The anaerobic digestion plants will produce energy from biogas as bi-products of the sludge treatment process and also produce fertilizers for recycling to land.

Galliford Try has completed similar anaerobic digestion plants for the Anglian Water at King’s Lynn in Norfolk and Great Billing in Northamptonshire.

Galliford Try CEO Greg Fitzgerald said the contract is part of the company’s services for both clean and waste water infrastructure projects as a leading infrastructure contractor to the water industry.

Galliford Try is the housebuilding and construction group.