TECHNICAL
BALLAST & WASTEWATER MANAGEMENT
RWO's CleanBallast system
RWO started the development of its CleanBallast system in 2003 as a public funded R&D project. First it tested different treatment devices in parallel to enable a direct performance comparison at naturally changing inlet water quality. Based on the results of this comparative testing, the company deemed the best technology and consequently the fullscale CleanBallast system was developed. The full-scale CleanBallast system with a capacity of 500 cu. m./hr. was operated on the container pier in Bremerhaven (Germany) since January 2007. From the beginning, importance was attached to testing at real locations in harbors, where ballasting operations are carried out. The focus was set on high ballast water production even at high sediment loads achieving the IMO Performance Standard D-2 for the biological efficiency. The Bremen-based Beluga Group is now using the ballast water treatment of RWO. The Beluga Group, based in Bremen, operates worldwide as a specialist for project and heavy-lift cargo. Its fleet of multipurpose heavy-lift project carriers is available for complex challenges in marine transportation. "Four top arguments back our decision and this investment of millions," said Niels Stolberg, Shareholder and Managing Director of Beluga Shipping GmbH. "RWO's CleanBallast works free of chemicals, which we support in the sense of sustainability. The system performed excellently in the landbased homologation in 2007 - and in fact even better than the International Maritime Organisation, IMO, provides for. Due to the compact and process technology conception we also save important space. And our experience with RWO's competence in the area of the oil-water separators that are installed
aboard Beluga ships also convinced us to decide in favour of RWO." Ten heavy-lift cargo ships of the total 51 vessels of the Beluga fleet are to be equipped with the CleanBallast system by as early as between 2008 and 2010. The CleanBallast system consists of new designed Ballast Water Disc Filters, the EctoSys electrolysis for disinfection and the algae monitor. The CleanBallast system is operated inline during ballast water uptake of the ship. As the first treatment step, the Ballast Water Disc Filter was designed by RWO to achieve a high flow rate at a low footprint and reliable performance for realistic heavy duty operation in harbors with high sediment load.
E-Mail: rwo@veoliawater.com
DMA Bilge Water Matrix System
DMA Sorption recently launched its new DMA Bilge Water Matrix Separator System, which will have no moving parts in the first stage and cleaning the water down below 5 ppm. The system has small foot prints and deals effectively with problems with particles and oil emulsions. The company's full-stage Bilge Water Cleaning system comprises a Matrix oily water separator in combination with a second stage Teflon membrane filter (combined particle and emulsion breaker) and a third stage Absorption membrane filter (full absorption and emulsion breaker). The company has designed the filters and the systems with the vessel owner in mind, working to deliver very high absorption rates to minimize filter changes and keep running costs low. DMA Sorption has developed its own PPM/ODM Monitor, based on fluorescence technology with a self-cleaning ultra sound and vibration device of the optics. Sizes are available from 0.5 to 10 cu. m.
www.dma-sorption.dk
Hyde Guardian Featured on Coral Princess
The M/S Coral Princess fitted with the Hyde Guardian ballast water treatment system, is reportedly the first ship accepted into the U.S. Coast Guard's Ship Technology Evaluation Program (STEP). Tom Mackey, Hyde's Chairman, explained. "The significance of the STEP Acceptance is that this Carnival Corporation vessel will be allowed to discharge properly treated ballast water from the Hyde Guardian System anywhere in the U.S. for the life of the ship." Hyde Marine began developing this technology more than 10 years ago, and refined the design and improved the performance leading up to the 2003 delivery of the HG250 system to the Coral Princess, which has operated trouble free for more than five years. Hyde also delivered a Guardian system to the Royal Caribbean Cruise Lines' Celebrity Mercury in 2006 and in December 2008, delivered six Guardian systems to the Royal Navy for their new UK Future Aircraft Carrier (CVF) program. Hyde Guardian meets the pending IMO ballast water management convention requirements. The robust design includes an autobackflushing filter which removes sediment and larger plankton, and a powerful UV disinfection system which kills or inactivates the smaller organisms and bacteria. The system is fully automated and can be integrated into the ship's ballast control system.
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