HNLMS Mercuur (A900), the Royal Netherlands Navy submarine support and torpedo recovery vessel undergoing retrofit work at Damen Shiprepair Den Helder, is to be fitted out with a MEPC 227(64) compliant wastewater management system from ACO Marine.

The scope of supply is based around ACO Marine’s type-approved Maripur NF-50 advanced membrane bioreactor treatment plant and includes a Lipator NS2 grease separation system for the pre-treatment of galley water, a grey water transfer system, and aeration equipment for the ship’s wastewater and sludge tanks.

Martin Wattel, Damen Shipyards’ project manager responsible for the upgrade work, said: “With previous experience of the Maripur system aboard four Holland-class ocean patrol vessels and the new joint support ship HNLMS Karel Doorman, the Royal Netherlands Navy was keen to upgrade the Mercuur with the same technology in order to comply with the new water treatment rules.”

ACO Marine Managing Director Mark Beavis said: “The requirement was to completely replace the existing black-water only system with a solution capable of treating both the black and grey water generated by a crew of 45.

“The challenge was to fit the type-approved Maripur NF-50 into a space previously occupied by a smaller non-compliant system. Access routes and space constraints were the main considerations but we have been able to design a system that not only fits into the available space, but also improves operational flexibility, reduces in-service operating costs and meets existing and future marine pollution rules.”