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Sewage sludge gasification (Sustainably addressing sludge-to-land, net-zero and emerging contaminant risks) 

Sewage sludge gasification (Sustainably addressing sludge-to-land, net-zero and emerging contaminant risks) 

Challenge: Breakthrough 4: Transform
Water cycle: Waste Water Treatment
Funding amount: £2,329,332
Lead water company: Yorkshire Water
Partner water companies: Southern Water Thames Water United Utilities Wessex Water
Delivery stage: In progress
Est. completion date: Jul 2026

Sewage sludge gasification (Sustainably addressing sludge-to-land, net-zero and emerging contaminant risks) 

Amount awarded: £2,329,332 

Led by: Yorkshire Water 

Partners: Enertecgreen, Northern Ireland Water, Queens University Belfast, Scottish Water, Southern Water, Thames Water, The Carbon Trust, Uisce Éireann, United Utilities, Wessex Water 

Our multi-partnership consortium, led by Yorkshire Water, identified Advanced Thermal Conversion (ATC) Gasification as an alternative approach to ‘Sludge to land’. This will allow us to prove the technical and economic viability of gasifying 100% sewage sludge and provide the water industry with the confidence to exploit the technology globally. 

“We have identified innovative uses for sewage sludge. Converting it into gas, biochar and ash ‘stones’ opens up new, more sustainable and low carbon ways to reuse sewage sludge. 

Once proven, the process will produce sustainable wastewater treatment media, construction materials and high-value products and generate heat and power.” – Dr Danielle Hankin, Innovation Programme Manager, Yorkshire Water