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Circular Thinking in Water: Harnessing Vortex Physics to Transform Wastewater Infrastructure and Deliver SDG 6

Author(s): Sean Mulligan, Peter Leonard, Fergus Clifford, Eoghan Clifford

Linked Author(s): Sean Mulligan, Eoghan Clifford

Keywords: IAHR;Hydrolink;Wastewater Infrastructure;Circular Thinking

Abstract:

Wastewater infrastructure is being asked to treat greater flows, meet tighter discharge standards and remain resilient to increasing climatic and operational volatility - often using assets designed for a different era. Engineered vortex flows offer a practical way to rethink two fundamental functions of urban water infrastructure: conveying stormwater ad wastewater safely and treating wastewater more effectively. This article traces the evolution of vortex flow technology from hydraulic research to full-scale deployment across sewer systems and industrial and municipal wastewater treatment, and examines how site-specific, measured outcomes are advancing Sustainable Development Goal 6. 

DOI:

Year: 2026

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