SWELL PROJECT
SWELL - DONEMANAWWTW
The completed SWELL Project at Donemana WwTW.
Marking the RBC delivery in July 2019 (pre-covid restrictions). Pictured l-r: William Cummings, Deane Public Works; Bob McGarvey, SWELL Project Manager, NI Water; Eamon Magee, WSI and Ryan Keltai from McAdam Design.
Deane Public Works purchased zero tail swing Ko- belco excavators with roto-tilt hitches grabs which made light work on this tight site.
UPGRADE WILL HELP ACHIEVE EU WATER FRAMEWORK DIRECTIVE ‘GOOD’ STATUS AT BOTH LOUGH FOYLE AND THE BURN DENNETT RIVER... DONEMANAWASTEWATER TREATMENTWORKS
I n service for nearly 50 years, NI Water has undertaken continued investment in the maintenance of Donemana Wastewater Treatment Works to achieve discharge compliance levels. But due to increasing population demands and greater pressure being exerted on the wastewater treatment works, some of the assets were approaching the end of their design lives. The replacement works, using modern technology, was constructed as part of the EU-funded SWELL project. This hi-tech wastewater treatment solution will improve the quality of discharge and provide increased environmental protection for the Burn Dennett River and thus the Foyle
start to completion. “The project faced two main problems,” explained Manus O’Kane, from Deane Public Works. “These included the construction of a new treatment works on a very restricted site with difficult terrain, while keeping the existing process operational for the duration of the works. “To overcome these issues, we purchased two new innovative and energy-efficient zero tail swing Kobelco excavators with roto-tilt hitches grabs to safely deliver the site works in the tight areas between the new items of process equipment. “A significant innovation to maintain the existing process and ensure it remained operational, was the deployment of a temporary treatment plant, which met all discharge consent standards for the duration of the works. Water Solutions Ireland (WSI) was responsible for the full design and build solution for Donemana WwTW. “We developed and delivered a full turnkey MEICA and process solution for the replacement WwTW,” said Patrick Cunningham, Contracts Director for WSI. To overcome the challenge of the restrictive site, WSI identified redundant assets under the client’s portfolio that could be refurbished to form part of a final temporary treatment solution. WSI engaged the supply chain to fully develop a compact, low maintenance temporary treatment solution that would provide full
treatment during construction. Patrick commented, “The installation of a temporary plant solution was effective in reducing overall project costs due to a reduced construction programme, reduced Health and Safety risks and easier maintenance of treatment performance levels during the construction period”. By employing best practice methods, the project achieved Performance Beyond Compliance Certification under the Considerate Constructors Scheme. “…this hi-techwastewater treatment solutionwill improve the quality of discharge andprovide increased environmental protection for theBurn Dennett River.”
Estuary for many years to come. The replacement WwTW has been
designed to serve a projected population of 1,217 and was constructed within the confines of the existing NI Water-owned land. The investment entailed a refurbished inlet works, two new primary settlement tanks, three new rotating biological contactors (fully enclosed tanks with built-in treatment capability), two new final settlement tanks, a refurbished storm tank and a new sludge holding tank. MAIN CONTRACTOR Deane Public Works was appointed by NI Water as the main contractor and provided multi-disciplinary design, project and supply chain management and all civil engineering works for the contract from
PROJECTTEAM...
McAdam Design
Construction Consultancy Services
Deane Public Works
Water Solutions Ireland
AECOM
www.northernbuilder.co.uk
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