The De Nora Balpure slipstream method ballast water treatment system is the 15th unit to be granted US Coast Guard (USCG) type-approval.
De Nora was the ninth manufacturer to apply for USCG type-approval. De Nora Ballast Water Management Systems’ general manager Dr Stelios Kyriacou commented “De Nora has spent a long time working towards this type-approval and we are delighted that our certification by the USCG has now been granted. Our team has worked hard to ensure owners and operators can partner with De Nora for their ballast water treatment needs in full confidence that we will deliver safe and reliable ballast water compliance for the lifetime of their ship.”
Italian manufacturer De Nora claims to be the originator and patent holder of electrochlorination disinfection of ballast water through the slipstream method. According to De Nora’s proprietary system design, only 0.5% to 1% of the seawater flow entering the ballast line needs to be channelled into the electrochemical unit.
The necessary amount of hypochlorite required to treat the water is generated in the slipstream and mixed to the full volume of ballast water.
This is said to offer an effective solution for ships with large ballast tanks and high pumping rates, particularly large tankers, bulkers and LNG carriers, voiding the requirement to store hypochlorite onboard, achieving increased efficiency and avoiding waste.
The type-approval certifies that the De Nora Balpure system meets all requirements of Title 46 of the Code of Federal Regulations and can be installed on US-flagged vessels to offer full compliance.
The choice of ballast water management systems will be discussed at the Asian Tanker Conference in Singapore in February.