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SeaCure

Ballast Water Treatment System Benefits Ship Operators

SeaCureThe NSF International Independent Laboratory will begin testing Evoqua Water Technologies’ SeaCure ballast water management system in preparation of US Coast Guard full type approval.

The SeaCure BWMS system has already received International Maritime Organization type approval and USCG alternate management system acceptance for capacities of 300-4,000 m3/h in all salinities. NSF testing is anticipated to be complete by fall 2015.

Land-based testing of the SeaCure BWMS will begin with the start of the biological season in brackish water in spring 2015 in Baltimore, Maryland and will be followed by sea water tests in Norfolk, Virginia. Fresh water testing will be conducted by the GSI and is scheduled to be completed by late summer 2015. Shipboard testing will be conducted concurrently and is expected to be finalized by fall 2015.

The SeaCure system utilizes a patented process that first injects biocide into ballast seawater before it reaches the large surface filter intakes to reduce the growth of marine organisms that can clog the filters. Next, Chloropac concentric tubular electrodes (CTE) generate sodium hypochlorite from the natural salinity in sea water that eliminates the need to purchase biocides and store or replenish them onboard.

Ship owners also benefit from low energy requirements and reduced maintenance costs due to the self-cleaning feature of Chloropac CTE system, the company says. Proprietary control logic monitors the biocide dose level necessary to provide the required efficacy depending on ballast water conditions. Chloropac electrodes have been proven in more than 2,500 installations worldwide for nearly four decades.

The SeaCure system is available as a compact skid or as modular components depending on customer requirements for installation in new builds and existing ships. The company says it is particularly well-suited for retrofit installations because biocide generation takes place in a small side stream from the ballast water main to minimize footprint and maximize available space. The side stream generation method offers advantages for installation on tankers because the modules can be placed in a way that only the filter and analyzer module are installed in the hazardous area of the cargo pump room, while the main parts of the system remain in the safe area.

 

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