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BP improves its wastewater treatment in the Rotterdam refinery

09.01.2017

The BP refinery in Rotterdam/Europoort in the Netherlands is located at the heart of Europe’s largest industrial port and is one of the largest refineries in Europe. The refinery produces considerable volumes of wastewater originating from the crude units, cooling towers, boilers, tank farm and rainwater that is treated in a sophisticated water treatment process.

Earth view of the BP refinery in Rotterdam. Credit: Google Earth

A new wastewater treatment installation has been installed in the refinery in 2015 (1) to treat this water. The installation, developed by SUEZ, is the one of the first of its kind in Europe to include a three-stage refinery wastewater treatment. First, three primary circular API type oil removal separators (2) are used to remove oil and mineral sludge. The wastewater then passes through three secondary DNF oil removal separators (3) that evacuate all the remaining oil present in the water. Finally, the dissolved organic and nitrogen compounds are eliminated by a biological treatment process (4). The produced sludge is dewatered in a decanter centrifuge (5), which minimises the volume of produced sludge.

This line can treat high volumes of wastewater, enabling the refinery to comply with the environmental standards set by the European Commission and the local authorities and significantly improve the quality of the water discharged into the North Sea.





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