Water & Wastewater Treatment

0800 211 611 • Free technical advice • Customised management reports • Full support 24/7 LOOKING FOR A RELIABLE PUMP HIRE PARTNER? With the increased pressure on infrastructure the need to hire temporary pumping solutions has never been greater, but so has the need to control costs in these difficult times. By using Sykes Pumps as your provider for diesel and submersible pumps you can provide the service your customers demand and still remain in control of your budget. We do more than any other supplier to help our customers manage their hire expenditure. Whether it is providing daily reports of products on hire or regular reviews with our account management team, Sykes Pumps will work with you for our mutual long term benefit. We know that by helping you save money on individual hires you'll want to use us more often! C M Y CM MY CY CMY K ASG_WET_Jan_265x185mm.pdf 1 11/12/2013 12:58 www.quantumeng.co.uk Email: sales@quantumeng.co.uk Quantum House, Saxon Business Park, Stoke Prior, Bromsgrove, Worcs. B60 4AD Phone: +44 (0) 1527 577888 Fax: +44 (0) 1527 577007 QUANTUM ENGINEERING DEVELOPMENTS LTD ORIGINAL THINKING FROM QED What can Quantum do for you today? www.quantumeng.co.uk Email: sales@quantumeng.co.uk • Surge suppression packages • Saturator vessels • Booster pump packages • Ozone packages • Instrument air packages • Vessel refurbishment and Spares • Patented Control System • Duplex relief valve sets • DAF compressor sets • Hydroburst packages Hydroburst packages WWT IRELAND 25 February 2014 WWT Ireland O n 8 November 2013, Severn Trent Response welcomed Phil Hogan TD, Irish Minister for the Environment, Community & Local Government to officially open the new wastewater treatment plant (WwTP) and sludge treatment centre in Letterkenny, County Donegal, Ireland. The plant currently serves a population equivalent (PE) of 40,000 with flows of over 27,000m 3 /day being treated to meet the stringent demands of the Shellfish Directive in the receiving waters of the picturesque Lough Swilly. This greenfield project required management and eventual destruction of the old WwTP - that was constructed over 40 years ago - with a new plant to manage the growing population of the gateway town of Letterkenny and local environs. To connect the local sewerage network to the new site, a pumping station and a 3,450m 3 storm holding tank was constructed with the WwTW consisting of an inlet works, phosphate removal, twin biological aeration chambers, final clarification and disinfection with a UV unit to ensure compliance with stringent faecal coliform standards that support the sensitive waters in Lough Swilly. Odour control A new pipeline and outfall diffusers were constructed to ensure maximum dissipation of the final effluent. The location is close to residential properties so the inclusion of extensive odour and noise abatement facilities were integral in the design. On the other side of the River Swilly is the regional hub sludge treatment centre that accepts leachate from a number of landfill sites, water treatment sludges and wastewater sludges up to a dry solids content of 25%. These facilities consist of gravity belt thickeners, centrifuges, anaerobic digestion and a belt dryer. This low temperature belt dryer has a capacity of 2,500tds/yr to produce a Class-A pellet biosolid with a dry solid content of 90% that is available for disposal to land. The methane from the anaerobic digester is connected to a combined heat & power (CHP) Unit that will transfer gas back to the local electricity grid network. Sludge transfer As the works and the sludge treatment centre are on opposites sides of the tidal River Swilly, a number of underground ducts were undertaken to facilitate the transfer of leachate and sludges between the sites. One of the unique characteristics of this project is the sustainability of the facility that supports the significant expenditure not just to improve the receiving water, but also in the generation of "green energy" from methane gas and a natural organic pasteurised biosolid pellet as an alternative to chemical fertilisers. The construction of these facilities was undertaken by Response Engineering within a two-year timeframe and a budget of €25.9M (£21.5). Speaking on behalf of Response Group, chairman Noel Hanley said, "We are immensely proud of the finished development and the performance of Response in delivering this prestigious project on time and within budget." The operation and maintenance (O&M) contract worth €25M over a 20-year period includes managing the WwTW and sludge treatment centre. nnn The demands of the Shellfish Directive in protecting the sensitive waters of Lough Swilly in the Republic of Ireland has led to the construction of a new wastewater treatment works. Ciaran Kelly, general manager of contractor and operator Severn Trent Response, reveals the extent of the works Letterkenny treatment works opens IRELAND Perspectives Government "It is clear that considerable time and effort was devoted to the planning and construction of this infrastructure." Phil Hogan TD, Environment Minister Local authority "The ability of the new sludge plant to produce high-grade dry pellets to be used as a fertiliser gives the facility a more sustainable dimension." Seamus Neely, county manager, Donegal County Council Contractor and operator "Over the next 20 years as the population of Letterkenny increases, we are looking forward to supporting the improving quality of water in Lough Swilly, generating electricity from natural gases and producing a biosolid pellet as an alternative to chemical fertilisers. Together with Donegal County Council, we are working to deliver long-term viable environmental improvements that impact across the local and regional community." Ciaran Kelly, general manager, Severn Trent Response Two final effluent clarifiers during construction at Letterkenny WwTW The concrete is poured in the early days of construction of the 27,000m 3 /day plant

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