WRCCSO - Rethinking the CSO for the 21 st Century Peter Henley Water - PowerPoint PPT Presentation

WRCCSO - Rethinking the CSO for the 21 st Century Peter Henley – Water Research Centre Ltd. Head of Wastewater Networks

Rethinking the CSO for the 21 st Century Innovation delivery through partnership independent | trusted | innovative

Water Research Centre Ltd – 90 Years of Innovation 3 wrcplc.co.uk independent | trusted | innovative

The CSO Problem • Unpowered CSOs do not work consistently • Screens can block and often by-passed • Results in discharge of unsightly sewer litter • Sewer litter leads to customer impacts 4 wrcplc.co.uk independent | trusted | innovative

Customer Impacts • Sewer litter leads to complaints, fines and very poor PR • Impacts on pollution regulators scoring indicators • Increased unwanted customer contacts • Reputational damage to the water industry 5 wrcplc.co.uk independent | trusted | innovative

WRc CSO Design Principle Allow the natural Minimal Retain sewer litter hydraulic presentation of within the flow processes to occur litter to the screen 6 wrcplc.co.uk independent | trusted | innovative

The 21 st Century CSO Solution • Design a CSO that retains sewer litter within the network • Provide a CSO solution that requires no power • Significantly reduces visible/aesthetic pollution • Reduce the frequency of screen cleaning • Provide a modular solution with a retro-fit capability 7 wrcplc.co.uk independent | trusted | innovative

WRc CSO Design WRc Innovative 2 chamber design Solution Chamber Separates the floating debris and 1. returns it to downstream sewer Chamber Allows ‘clean’ water to spill to the 2. watercourse via the screened weir 8 wrcplc.co.uk independent | trusted | innovative

WRcSO Chamber arrangement 9 wrcplc.co.uk independent | trusted | innovative

CSO Operation – Side Elevation Solid material density Stilling Chamber Spill Continuation Incoming Flow Point Flow 10 wrcplc.co.uk independent | trusted | innovative

CSO Operation – Downstream View Solid material density Spill Continuation Point Flow Incoming Flow 11 wrcplc.co.uk independent | trusted | innovative

The WRc CSO Advantages • Reduces debris presented to the screens by 98% • Reduces aesthetic pollution of watercourses and beaches to a minimum • Passive unpowered system that can be retrofitted • No E&M maintenance costs • Reduced SIM contacts and cost of spill clean up 12 wrcplc.co.uk independent | trusted | innovative

Patented solution (published) WRc partnership with Asset International Modular construction 13 wrcplc.co.uk independent | trusted | innovative

DZIĘKUJĘ ZA UWAGĘ Peter Henley Water Research Centre Ltd, United Kingdom Peter.henley@wrcplc.co.uk