ATLAS-DANMARK Ballast Water treatment System (ABWS)

Operational Expenses

The operational expenses, for one ballast operation, for a vessel having a ballast water capacity of 23.000 m3 will now be considered.

46 m3 of ANOLYTE is needed to treat this amount of ballast water applying a mixture ratio of 1:250. Using a generator with a capacity of 180 liter/h, about 11 days operation during the voyage will produce the necessary biocide and additional about 33 m3 of CATHOLYTE (as mentioned previously).For this production about 79 m3 of clean water is needed – drawn from the freshwater generators – and about 138 kg of common salt. The power needed for the electrolytic cells is about and pumps is 10 kWh (i.e. totally about 460 kWh)

The “footprint” of the generator (including the storage for the salt) is about 4 m2 and furthermore about 24 m3 of space available for the storage of ANOLYTE is needed. This is not a problem for new built vessels and for retrofitting a vessel; the storage container may be split into several food quality plastic or stainless steel tanks.  It has been preliminary estimated, that the operational cost for one such ballast water operation is 24 – 60€. A suggestion for the ABTS is shown below, however alternative layout is possible, when the ABTS will be tailor made for any size and type of vessel: