United Utilities has appointed a Laing O’Rourke Imtech joint venture to carry out the latest multimillion pound modernisation of Davyhulme Waste Water Treatment Works in Manchester - the largest treatment plant in the North West.
The modernisation programme will see the significant remediation of previously abandoned land in advance of the construction of six circular primary settlement tanks (PST) and a new activated sludge plant (ASP) with ten circular final settlement tanks (FST). This work will lead to significant environmental benefits for the site, improving the outflow, and subsequently the quality, of water entering the Manchester Ship Canal.
The JV will use digital engineering and DfMA (Design for Manufacture and Assembly) processes, allowing the project team to build the plant virtually before starting construction on site, providing definitive information to allow ease of commissioning and optimise long-term operation and maintenance.
Laing O’Rourke Imtech project director Graham Flynn said the JV’s experience using DfMA on similar sized waste water treatment facilities in the past will allow it to complete the works while the plant remains open and fully operational.
“Our ability to maximise the benefits of modern, offsite construction and engineering techniques is central to our solution, meaning that we can deliver this complex scheme in a live environment with minimal disruption,” he said.
The delivery team on the project includes Hyder Consulting and Mott MacDonald, who will be working in collaboration with the Laing O’Rourke Imtech JV.