WET News

10 WET NEWS AUGUST 2014 Water from the River Trent is pumped to the reservoir, from where it gravity-feeds to the treatment works across the road Hall WTW gets to grips with River Trent water quality issues • To overcome predicted water supply deficit over the next 25 years in Lincolnshire, Anglian Water has completed the 'innovative' Hall WTW. Maureen Gaines has been finding out more. TECHKNOW • The reservoir was carved out of the ground using satellite-controlled excavation machinery • The new treatment works features filters that are 1/20th the thickness of a hair and ultra-violet light to disinfect the water • Gravity-feed is used to move water from the reservoir to the treatment works • Roughing filters, which are coarser, have been installed • The abstraction shaft was hydraulically pressed into the ground • No chemicals are used at the site NEED TO KNOW There were 170 stakeholders involved in the construction of Hall WTW The water quality of the River Trent is poor The abstraction point has been built on a high bank to avoid any problems from the Trent flooding on high tides 2 012 may stick in people's minds as being the year of the London Olympic Games, but for Anglian Water it marked the start of what would be one of its most challenging and innovative projects – con- structing Hall Water Treatment Works. Two years on and the works, located at Newton-on-Trent in Lincolnshire, is built and in the final throes of commissioning. Anglian Water has officially opened the new £44M Hall Water Treatment Works (WTW), which it describes as "one of the most innovative ever con- structed". The facility will ena- ble the company to meet pre- dicted future population growth in Lincolnshire. The treatment plant will take water from the River Trent, from where it will be pumped 2km to a new 300Ml storage reservoir. Around 20Ml a day will then be treated before being supplied to homes and businesses in south Lincolnshire. The main contractor for the work has been the Galliford Try and Imtech joint venture, GTM. Peter Simpson, chief execu- tive of Anglian Water Group (AWG), said: "Between now and the end of the decade, Lin- colnshire is expected to con- tinue to grow at a faster rate than the national average. For this county to continue to grow, and for its businesses to PROJECT SPECS • Construct a water treatment works that can treat 20Ml deficit • Construct a pumping station capable of taking up to 64Ml of water a day from the River Trent • Install 4km of pipes • Construct 20-acre storage reservoir that holds 300Ml of water • Install screens into the River Trent • Construct an abstraction shaft THE VERDICT "Innovation is at the heart of this facility, from the processes it uses to the technologies included in its design. And throughout its construction, we've focused on using techniques that minimise our environmental impact. We believe it's unique in the UK and is one of the most advanced water treatment works ever constructed." Peter Simpson, chief executive of Anglian Water Group ONSITE WATER RESOURCE PLANNING continue to prosper, it's vital that services like water are read- ily available to the communities and businesses which rely on them. "Investments like this should give people confidence that Lin- colnshire will remain an attrac- tive place in which to live and do business for many years to come. "We're committed to playing our part in securing the region's future by making investments like this. Hall Water Treatment Works is a major part of our £327M investment in the coun- ty's water and water recycling infrastructure between 2010 and 2015." The new Hall Water Treat- ment Works was officially opened by Tony Worth, Her Maj- esty's Lord Lieutenant of Lin- colnshire, and the opening cele- brations were attended by representatives from Lin- colnshire County Council and the Chamber of Commerce, and representatives from the com- munities that will be served by it. Simpson told guests: "Inno- vation is at the heart of this facility, from the processes it uses to the technologies included in its design. And throughout its construction, we've focused on using tech- niques that minimise our envi- ronmental impact. We believe it's unique in the UK and

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