Water & Wastewater Treatment

WWT April 2017

Water & Wastewater Treatment Magazine

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Page 22 of 51

www.wwtonline.co.uk | WWT | APRIL 2017 | 23 Project focus Project focus A s part of its plans to shape and develop its surface water management strategy, Anglian Water has been working with a specialist team at engineering and design consultancy, Atkins, to look at the opportunities for installing provide including the energy savings from the reduced pumping costs; the increase in green space improving local amenity; carbon reduction; and creating headroom in the water infrastructure to allow for growth. The Atkins team used its SuDS Studio toolkit to analyse 1,900km 2 of catchments in the Anglian Water region to identify locations where SuDS could help manage surface water. The SuDS Studio toolkit is a unique geospatial tool that identifies feasible SuDS and then selects the most cost-beneficial feasible solution. It does this by inputting a range of GIS data that defines the geospatial relationship between sources and runoff and locations that SuDS could be installed. The approach also includes datasets on constraints (such as flood zones, listed buildings, topography etc.) to ensure the assessment is robust. It is different to other mapping tools as it eliminates solutions using engineering criteria. As a rapid assessment tool, it is a much more cost effective than the traditional approach, whereby areas previously had to be assessed individually by hand / boots on the ground. The tool also prioritises the opportunities for SuDS, which is extremely helpful to those using the tool, and provides information on constraints associated with each site. Using SuDS Studio at Anglian In the case of Anglian Water, 16 different types of SuDS solutions were included as part of the assessment, along with the unit costs for each type of solution. This ensured that Anglian Water was shown the most cost- effective solution for each site as the preferred option. To ensure the SuDS options would be futureproofed from climate change and unpredictable weather, a number of climate change scenarios (including a 100 year plus climate change scenario) were run through the model. Representatives from Anglian Sustainable Drainage Systems (SuDS) within existing communities to manage surface water. SuDS are increasingly being explored as a chosen option for managing surface water by water companies due to the range of wider benefits that they can The tool identifies the best place for SuDS features such as swales and drainage ditches Sustainable drainage Anglian Water uses mapping tool for retrofit SuDS ZoricA ToDorovic ASSociATe DirecTor, ATkinS Neil BreToN Senior MoDeller, ATkinS • Drivers ● create headroom in wastewater infrastructure to allow for popula- tion growth ● increase green space for local amenity ● energy savings via freeing up pumps from pumping surface water

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