Denmark’s AP Moller-Maersk has completed testing of DESMI Ocean Guard’s containerised ballast water treatment system (BWTS), which is designed to be suitable for container vessel retrofits.
DESMI Ocean Guard provides its OxyClean system as a component delivery system, skid-mounted system or to be installed in a container.
The OxyClean BWTS can deliver treated water flow rates up to 500m³/h in a 20ft container and up to 3,000m³/h in an arrangement with two 40ft containers placed on top of each other.
Containers are placed on top of each other for required service height of the filter.
Maersk Maritime Technology executive Per Hother Rasmussen said that from September 2011, the company had tested the DESMI Ocean Guard containerised solution over seven months on one of its vessels and found that it met all their needs and expectations.
"We have tested containerised ballast water treatment system plants on two different vessels and we find it a viable way of overcoming space problems in crowded engine rooms as well as it gives the advantage of easy and short installation time, even with the vessel in service," Hother Rasmussen said.
Lloyd’s Register approved the OxyClean BWTS in November 2012, while DNV finished their Safety Assessment and ABS issued a Design Assessment certificate for the system in January 2013.
Based on mechanical filtration followed by disinfection with a combination of UV and ozone, the OxyClean system is claimed to be the first BWTS to complete International Maritime Organization (IMO) testing in fresh, brackish and salt water.
Image: DESMI Ocean Guard’s OxyClean BWTS system can achieve flow rates up to 500m³/h in a 20ft container and up to 3,000m3/h in a configuration with two 40ft containers placed on top of each other. Photo: Courtesy of DESMI Ocean Guard.