Water & Wastewater Treatment

WWT May 2017

Water & Wastewater Treatment Magazine

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Page 3 of 47

4 | MAY 2017 | WWT | www.wwtonline.co.uk Industry news May The first of three huge multimillion-pound bypass tunnels being built to reinforce water supplies for Birmingham have been completed by Severn Trent Water. The Elan Valley Aqueduct (EVA) has been bringing water to the homes and businesses of Birmingham and the surrounding area for more than 100 years. However, a€er so many years of service, the need for regular maintenance and refurbishment is becoming ever more frequent, hence the need for Severn Trent's flagship £300M Birmingham Resilience Project. Paul Dennison, pro- gramme manager for Severn Severn Trent Water completes first Elan Valley project tunnel Contract Tracker Glan Agua to build GAC plant Glan Agua has been awarded a section of works at Irton Water Treatment Works quality project by the Morgan Sindall Sweco Joint Venture (MS2JV) as part of Yorkshire Water's drinking water plans. The company will design and construct a Granular Activated Carbon (GAC) plant to treat pesticides, an increasingly important driver for GAC and related projects in the UK. NIW picks four for £100M deal NI Water has announced the award of a new £100M water improvement contract to four local companies - BSG Civil Engineering, Farrans Construction, Lagan Construction Group and Meridian Utilities. The four contractors will be improving the watermains infrastructure throughout Northern Ireland over the next four years. FLI Water in Anglian tie-up FLI Water has been selected as a MEICA partner on Anglian Water's framework, working with Anglian Water and the @ One and IOS Alliance. Working across Anglian Water's region, the framework will include all mechanical, electrical, instrumentation, control and automation (MEICA) allocated work. Over a 10-year period, the programme of work could be worth up to £1.5M per year for FLI Water. Trent, said: "At the moment, the EVA is the sole source of supply into Birmingham, and storage at our treatment works at Frankley means we can only turn it off for a few days at a time for maintenance. To allow us to turn it off for longer periods, an alternative water supply for the city is being built. Work began this month on a new pipeline from Lickhill, near Stourport-on-Severn, 25km into the existing water treatment works in Birmingham. "However, our checks on the existing aqueduct show that in three places, there is work that we'd rather do before the new pipeline is completed. As we can't shut down the aqueduct, we've had to come up with alternative solutions." Three new tunnels will be built, then connected at either end, to bypass sections of the existing aqueduct. These will be at Bleddfa, Nantmel and Knighton. All the tunnelling equipment from Bleddfa has now been transferred to the second site at Nantmel, where the Tunnel Boring Machine is being prepared for its re-launch in April to start work on tunnel number two. You can read more about the Bleddfa section of the EVA project in our feature on p17. A British company has designed and manufactured the world's largest ever gate valves for a huge pipeline project in Texas, USA. Y o r k s h i r e - b a s e d Blackhall Engineering Limited was asked to produce 100-year asset life valves for the $2BN Integrated Pipeline Project being jointly carried out by Tarrant Regional Water District (TRWD) and Dallas Water Utilities (DWU). The project aims to increase the water supply to metropolitan Dallas through the construction of 150 miles of pipeline, three lake pump stations and three booster pump stations. Blackhall valves are playing an essential role on this mega project by regulating the water in the largest and longest segments of the pipeline. British company works on world's biggest gate valve This involved the design and manufacture, for TRWD, of high pressure DN2800 / 108 inch parallel faced metal seated gate valves – believed to be the world's largest gate valves - weighing in at over 100 tons and standing a majestic 40 feet tall. The first valve to be installed on the pipeline successfully passed all hydraulic tests, and five further valves are currently in production for the scheme.

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