First is sixth
A new application has been added to the list of ballast water treatment systems seeking US Type-Approval after Greek system maker Erma First filed its application in early April. Erma First is the sixth ballast treatment system maker to apply for type approval and joins SunRui and Ecochlor in waiting for confirmation of the success of their application. Assuming that all three are successful they will join Optimarin, Ocean Saver and Alfa Laval as front runners in an increasingly competitive field. The Erma First system is an electrochlorination type using electrolysis to produce chlorine from the ballast water itself. There are various models in the range with capacities from 50m3/h through to 3,000m3/h. Erma First claims its system is the only full flow electrolysis system to have so far applied for US type-approval. Of the six systems to have applied for US type-approval, four are electrochlorination systems and two rely on UV. Both UV systems have been given approval and one electrochlorination unit has also been approved. All three systems awaiting approval are electrochlorination types.