Frederik Deroo

Jan de Nul NV provides civil engineering construction services. Its services include dredging, treatment, and disposal of contaminated soils, pipeline stabilization, reclamation of port and industrial areas, soil remediation, salvage, and heavy lifting services. The company was founded by Jan Frans Jozef De Nul in 1938 and is headquartered in Hofstade-Aalst, Belgium.

Part of Sofrida SA, Envisan NV is a Belgian company that provides treatment, purification and processing of waste. The company is based in Hofstade-Aal, Belgium. The CEO of the company is Jan Pieter Jozef de Nul.

Sofidra SA engages in dredging, civil, and environmental works. The company was founded on December 12, 1999 and is headquartered in Luxembourg.

Part of Waterside Financial Ltd., Jan de Nul (UK) Ltd. is a British company that specializes in offshore, marine, civil, environment, and project development. The company is based in Ascot, UK. Jan De Nul Group, the parent company, is a leading expert in five main activities, including the development of the Payra port area, which involves deepening the access channel up to 57 kilometers offshore and reclaiming new port land. Through its subsidiary PSR Brownfield Developers, the company is also active in the remediation, repurposing, and sustainable development of polluted industrial sites and underutilized sites, applying the formula 'Unburdening, Unlocking, Developing.'