Cambi announced a contract with Suez for an engineering study for a thermal hydrolysis process (THP) system at the Grande Synthe wastewater treatment plant in Dunkirk, France. Suez are upgrading the Grande Synthe plant with a sludge digestion facility that will treat both the indigenous sludge and sludge from several smaller sites while reducing associated costs and increasing biogas production. The engineering study follows a master plan that identified thermal hydrolysis as an effective way to pre-treat secondary solids before anaerobic digestion at the Grande Synthe site.

The study will be delivered within the first half of 2024 and is an important step towards an equipment delivery contract.