Doosan Lentjes Advances Waste Treatment Project

Doosan Lentjes, a German specialist in environmental technologies and thermal waste treatment, has reached a key milestone in its sewage sludge treatment project in Flanders, Belgium, with the erection of the first steel column. This marks the transition to the installation phase of core process equipment, including an electrostatic precipitator (ESP) that initiates flue gas cleaning and enables phosphorus recovery from ash — a resource classified by the EU as critical.

The plant is designed to treat sewage sludge from the wastewater of around four million residents each year. It incorporates advanced emissions control systems and energy recovery features, including a bubbling bed furnace, semi-dry cleaning stages, and heat exchangers that allow recovered steam to be used both within the plant and in a neighbouring industrial facility. Doosan Lentjes is delivering the full process, mechanical, and electrical scope for the single-line furnace system under a contract awarded by Aquafin to the FOSTER consortium of BESIX Group and Indaver NV.

The company reports that the integrated technology is expected to deliver high combustion efficiency and reduce annual CO₂ emissions by approximately 28,000 tonnes, aligning with wider objectives for resource optimisation and environmental performance.

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