Filtersafe develops a new BWMS UV filter

Filtersafe has announced the launch of its new “MANTA” filter series, specifically designed for UV-based Ballast Water Management Systems (BWMS).

The high-performance filter is capable of removing 99.6% of organisms larger than 50μm to ensure that shipowners and operators will comply with the International Maritime Organization’s D-2 standard for implementing the convention ballast water management, which must be respected. by September 8, 2024, as well as the existing United States Coast Guard (USCG) “Final Rule for Ballast Water Treatment”.

Filtersafe said it received Series Equivalent Type Approval from Det Norske Veritas (DNV) and the USCG, making it one of the first complete filter redesigns to be approved under the USCG policy letter. USCG (CG-OES 03-20) Guidelines on Alternative Testing Components for an Approved BWMS.

The MANTA is equipped with Filtersafe’s new single motion scanner. This new design eliminates lateral movement of the scanner, reducing costs and eliminating parts. It features a larger proximity nozzle that is able to clean the filter screen in one continuous motion. When combined with the filter’s non-pleated screen, the MANTA has improved cleaning coverage that reaches 100% of the screen, according to the manufacturer.

The filter also has a scalable automatic self-cleaning. Automatic filter cleaning can be increased when ballasting in sediment-rich waters, including those found in the Port of Shanghai, to ensure consistent flow and avoid costly operational issues such as clogging. Although tested with a finer-mesh filter, the MANTA outperformed the original BallastSafe design in independent tests of filter cleaning, removal rate and throughput efficiency, Filtersafe said.

For corrosion prevention, Filtersafe introduced 904L stainless steel to its filter screen supply chain last year and this superior steel is also used in MANTA series sintered screens. Additionally, and in order to combat the ever-increasing cost of alloy materials, Filtersafe, together with its partners, has adopted a novel SuperQuenching process, borrowed from the space industry, to overcome the material degradation of the 316L due to weaving, sintering, and manufacturing process. This also allows it to offer a viable 316L screen option at a lower cost. Improved longevity and superior cleaning reduce maintenance costs and, even when servicing is required, MANTA is carefully designed to ensure it can be serviced safely and efficiently by one person.

Mark Riggio, Marine Manager at Filtersafe, said: “As requested by leading BWMS manufacturers, we are delighted to offer the performance of Filtersafe in a smaller package, designed specifically for UV systems. Having an equivalent series type approval already completed makes adopting a MANTA filter a no-brainer for our current customers. The growing challenges posed by sediment-rich water conditions aren’t going away – and now we have the filter anyone can use to meet them.

“From the point of view of shipowners and operators, MANTA is a victory in the CAPEX and OPEX categories. You would expect CAPEX costs to be a bit higher for a high quality filter, MANTA disrupts that. And our OPEX costs have always been Filtersafe’s forte.

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