Damen’s award-winning, mobile, ballast water treatment system has received IMO type approval. An external ballast water treatment unit designed primarily for use in ports and harbours, the Damen InvaSave treats ballast water to the IMO D-2 standard, for ballast water received from inbound ships. It can also deliver water treated to the same standard to outbound vessels. Its mobile, containerised format means that it can be operated from the dockside or from onboard a vessel alongside, receiving or delivering water to a ship.
The InvaSave has been developed with the knowledge that, after the 8th of September this year, unmanaged ballast water cannot be discharged. Any vessel that cannot take in or discharge its ballast water after that date will be restricted in its operations and there may be financial implications due to demurrage costs. The Damen InvaSave is, therefore, a valuable asset to all ports seeking to minimise vessel delays caused by the need to treat unmanaged ballast water, allowing them to offer a robust, IMO-certified contingency service.
Damen has dedicated years of research on the development of the InvaSave, including collaboration with some of the leading research institutes in the Netherlands – Groningen Seaports, Wagenborg, MariFlex and Waddenfonds.
Marcel Karsijns, Managing Director of Damen Green Solutions, said: “InvaSave solves the ballast water challenge in ports. We are very proud to receive IMO type approval – it proves the capabilities of this product, something that we have believed in for a long time now. We are looking forward to providing this solution to the market.”
Philip Rabe, responsible for InvaSave sales at Damen, says: “The InvaSave is a unique product – this is a truly innovative solution developed with the needs of the future in mind. Its application goes well beyond the relevance it has for ports too. In many cases, it offers vessel owners a viable and cost-effective alternative to retrofit. And, in the event of failure in an on board system, it ensures that owners have a means by which to access water treatment quickly, equalling no downtime.”
One step, discharge only treatment
InvaSave is fast and effective. It produces no filter backwash and requires no holding time to achieve biological efficacy. Land-based tests were conducted as if the InvaSave was a regular in-line treatment system and, in addition, the water was tested directly after treatment to verify that the system achieves D-2 compliance in its capacity as an external treatment unit. The InvaSave has demonstrated that it can treat ‘raw’ ballast water from ships without any pre-treatment or settling time in the ballast tank. The latter was a requirement of the authorities prior to approval as an IMO-certified contingency measure in a port.
Damen InvaSave is a single-pass system and uses mechanical filtration and ultraviolet radiation to remove and eradicate invasive organisms, and has been tested in fresh, brackish and marine water, including coastal water with a high sediment load. The system is designed to be able to treat water with a low turbidity and a UV Transmission of down to 20%. The system has shown consistently that it can outperform the IMO D-2 standard for organisms.
Damen Shipyards Group
Damen Shipyards Group operates 33 shipbuilding and repair yards, employing 9,000 people worldwide. Damen has delivered more than 6,000 vessels in more than 100 countries and delivers some 180 vessels annually to customers worldwide. Based on its unique, standardised ship-design concept Damen is able to guarantee consistent quality.
Damen’s focus on standardisation, modular construction and keeping vessels in stock leads to short delivery times, low ‘total cost of ownership’, high resale values and reliable performance. Furthermore, Damen vessels are based on thorough R&D and proven technology.
Damen offers a wide range of products, including tugs, workboats, naval and patrol vessels, high speed craft, cargo vessels, dredgers, vessels for the offshore industry, ferries, pontoons and superyachts.
For nearly all vessel types Damen offers a broad range of services, including maintenance, spare parts delivery, training and the transfer of (shipbuilding) know-how. Damen also offers a variety of marine components, such as nozzles, rudders, anchors, anchor chains and steel works.
In addition to ship design and shipbuilding, Damen Shiprepair & Conversion has a worldwide network of 16 repair and conversion yards with dry docks ranging up to 420 x 80 metres. Conversion projects range from adapting vessels to today’s requirements and regulations to the complete conversion of large offshore structures. DSC completes around 1,500 repair and maintenance jobs annually.