De Nora submits BWTS for USCG Type-Approval

De Nora has applied for USCG type approval for its BALPURE BWTS De Nora has applied for USCG type approval for its BALPURE BWTS
Industry Database

Electrochlorination equipment supplier De Nora has submitted an application for US Coastguard (USCG) type approval for its BALPURE ballast water treatment system (BWTS) following testing.

The application includes the results of all shipboard, land-based, and environmental testing, plus documentation, engineering design and final drawings associated with De Nora’s BALPURE system independently verified by Lloyds Register.

“Submission for USCG type-approval illustrates De Nora’s ongoing, long-term commitment to the marine industry,” said Don Stephen, managing director, De Nora Water Technologies UK.

Shipboard testing

Completed in November 2017, the shipboard testing of De Nora BALPURE was conducted on a US-flagged Aframax tanker operating on the west coast of the United States in the regulated waters of California and Alaska.

The tanker is in normal trading and has been ballasting and deballasting with the BALPURE system on a regular basis.

BALPURE has been previously identified by the US EPA Science Advisory Board (SAB) as one of three systems that demonstrated the ability to meet a standard ten times more stringent than the IMO D-2 standard.

Previously certified under the USCG Alternative Management System (AMS), De Nora is the originator and patent holder of electrochlorination disinfection of ballast water through the slipstream method.

This method means that only 0.5% to 1% of the water entering the ballast line needs to be channelled into the treatment system.

The hypochlorite used to treat the water is created in the slipstream and is then introduced to the full volume of ballast water, offering an effective solution for ships with large ballast tanks and high pumping rates.

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