WET News

12 WET NEWS JUNE 2014 Liverpool WwTW gets a new liner PROJECT SPECS • Renovate the existing cast in pipes at Liverpool Wastewater Treatment Works, which were starting to rupture • Install an ambient cured liner in eight pump feeding pipes ONSITE Pipe renovation Sulzer Pumps Wastewater UK Ltd 5th Floor Astral Towers Crawley West Sussex Tel: 01293 558169 Sulzerinnovation@sulzer.com www.sulzer.com Explore the full range of premium efficiency wastewater products. From the ABS submersible sewage pump XFP offering world-class energy savings to the world's most compact and energy efficient direct driven ABS HST20 High Speed Turbocompressor. Revolutionary energy saving in all key applications. Explore our World Sulzer Advert concepts V4_Layout 1 06/03/2014 16:55 Page 2 Organised by Supported by For the past 3 years, WWT's fl agship Sustainable Water Conference and Exhibition has established itself as the premier event for water industry professionals tasked with building resilience and sustainability into their businesses. The ENERGY AND CARBON MANAGEMENT CONFERENCE, taking place on day one of Sustainable Water 2014, examines the challenges of reducing energy usage and carbon emissions and increasing renewable energy investment. Register before June 13th to save £100 Join over 100 representatives with responsibility for energy management and procurement; operations; sustainability; asset management and wastewater networks and treatment to: • Find out how Anglian Water is investing in effi ciency infrastructure to deliver cost-effective and sustainable projects • Explore whether South West Water's 80% GHG reduction by 2050 is a SMART target or deluded optimism • Gain fi rst-hand insight into Scottish Water's energy strategy and self-suffi cient treatment works • Explore how Yorkshire Water is achieving renewable energy performance through production behaviour • Examine how Thames Water is working with customers to fulfi l its renewable energy ambition • Understand the principles and projects behind Wessex Water's carbon management strategy Chris Newsome Director of Asset Management Anglian Water Graham Southall Head of Commercial Projects Thames Water Mike Pedley Head of Energy Dŵr Cymru Welsh Water Dan Green Head of Sustainability and Innovation Wessex Water Ben Roche Head of Energy and Recycling Operations Yorkshire Water To view the full agenda and register for this event and/or the Environmental Water Management Conference taking place on the 24th, visit www.sustainable-water.co.uk SusWater-ECMC-HPH-winningone.indd 1 22/05/2014 16:05 • When cast in pipes were found to be near the end of their working life, ambient cured liner proved the perfect solution. 12 WET NEWS JUNE 2014 Working at a depth of 17m did not make access easy Liverpool WwTW gets a new liner T he new £200M extension to Liverpool WwTW is now half way through its con- struction, which will keep the River Mersey clean. The exten- sion is part of some ww£3.6B being invested by United Utili- ties (UU) across the North-west to improve water quality and the environment by 2015. By upgrading the existing works and constructing a sequential batch reactor (SBR), the treated water leaving the new plant will be cleaner and greener, helping the continuing rejuvenation of the River Mersey and ensuring it meets strict European standards for water quality. GCA, the consortium com- prising Galliford Try, Costain and Atkins, is working with UU under the United Utilities Inte- grated Alliance (UUIA), is undertaking the major refur- bishment and extension to the works. The construction site is a hive of activity – at its peak around 350 people will work on the project. The completed plant will be able to cope with 11,000l of wastewater per second. Wedeco Spektron UV Wedeco LBX UV Reactors Sanitaire Aeration Grids Hydroejectors & Radial Aerators Flygt Jet Aerators & Mixers Flygt Mixers AVAILABLE FROM XYLEM WATER TREATMENT 24/7 HIRE RAPID BESPOKE DESIGN SOLUTIONS DIRECT FROM THE MANUFACTURER FOR ULTIMATE PEACE OF MIND • Cost effective temporary treatment installations • Plant refurbishments | Repairs | Seasonal Overloads Drought Alleviation • Portable containerised systems available for larger projects • Planned, bespoke and reactive maintenance solutions • PLUS monitoring, control and analytical equipment also available 0845 707 8012 rental@flygt.co.uk | www.xylemwatersolutions.com/uk flygt_sanitaire_wedeco treatmentl advert rev C_Layout 1 28/02/2014 17:10 Page 1 Prior to the expansion pro- ject, within the plant the untreated wastewater entered via gravity flow at 17m deep where eight, 800 mm diameter direct-fed pumps transferred the flow into the treatment works near ground level. The pumps were fed by an open channel that split into eight sections of 800mm diam- eter pipe to directly feed the existing pumps. Part of the overall project involved refur- bishing the pumps. This brought to light the need to renovate the feed pipe- work to extend the overall life of the plant. Due to salinity levels and debris in the incoming sewer the existing cast in pipes were reaching the end of their life and starting to rupture. The existing pipes protruded from the face of a concrete wall by about 800mm. The first task was to cut back the existing pipe to the face of the concrete wall structure. The intention was to install a wall coupler that would bolt to the wall face. The wall coupler was to be encased in concrete, with a new spool piece and valve installed to marry up to the existing pump. The programme was poten- tially to have iLine Technolo- gies come in as the specialist lining contractor to install a CIPP liner a˜er the new coupler had been established. High risk Whilst it was believed that the existing pipe internal diameter was around 800mm it was not "In truth, this was something of a complex and challenging operation given the location, depth, size and length of the patches involved." John Beech, iLine ►

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