Opportunities for stormwater treatment – design, construction and operational experiences of United Utilities’ first stormwater wetland at Southwaite WwTW: PRESENTATION ONLY

Jessica Betts, Graduate Process Engineer, United Utilities, UK

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Southwaite WwTW
Existing Works and Drivers

• Located near Carlisle, 1 km NW of Southwaite service station.
• Design population equivalent of 972 (domestic pop. 150)
• Treat All Flows (TAF) works, with a future 1 in 30 year flow of 26 l/s
• Driver is to achieve WINEP objectives and good status in the River Petteril • Existing works (trickling filter, humus tanks) are aging, hydraulically overloaded and overtopping.