dws-damen-invasave-installation2-770pxThe InvaSave technology for port based treatment of ballast water, entered the final phase of certification being tested on board of the 800TEU container vessel Henrike Schepers.

This final shipboard test phase was announced by its developer Damen Shipyards Group on 20 January.

Damen offers InvaSave as a containerized technology that can be placed on board of a lorry or a service barge.

The first service barge with a InvaSave treatment unit is planned to be operated in the Dutch ports of Delfzijl and Eemshaven.

dws-damen-invasave-300-container-350px  InvaSave inside a standard 40 ft container with a capacity to treat 300 m3 ballast water per hour.

Integrated water technologies
InvaSave combines fine filtration and ultra violet disinfection. Sludge and sediment is dewatered and compacted in a secondary treatment so it can be further processed safely ashore.

Each container unit handles 300 m3/h – and can easily be scaled up, using multiple units.

Ban on discharge untreated ballast water
As soon as the IMO Ballast water management convention (BWMC) enters into force it will no longer be allowed to discharge ballast water untreated.

A vessel needing to discharge its ballast water can connect to the InvaSave unit, which then processes the water and discharges it in the port in compliance with the IMO D2 standard.

dws-damen-invasave-impression-on-barge-350pxImpression of the barge for the port based service as will become available in the Dutch ports of Delfzijl and Eemshaven soon.

One step treatment
Manager ballast water treatment, Gert-Jan Oude Egberink of Damen says, “InvaSave is the world’s first and only technology on the market today to treat ballast water at discharge in only one step."

Oude Egberink foresees that not all ship owners want to retrofit an on board treatment system. "The ships may operate on non-exempted fixed routes or they are so old as to make any investment in such a system prohibitively expensive."

Therefore a port-based ballast water treatment can be an alternative, Oude Egberink explains.

Convention into force soon
Damen expects the first InvaSave units to become operational when the IMO Ballast water management convention comes officially into force. Damen expects this to happen in the first half of 2017.

At this moment some 47 countries have ratified the convention but these countries represent only 34.56 per cent of global tonnage, whereas 35 per cent is required for the convention to entry into force.

This news item was originally published on the website of Damen Shipyard Group.

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Royal Moroccan Navy takes delivery of Damen Pontoon for drought relief action, 16 December 2015
Damen delivers small scale CSD350 dredger to national port authority EPN, Nicaragua, 28 December 2014

More information
Damen Shipyards Group
Gorinchem, the Netherlands
+31 183 63 21 89