ERMA FIRST BWTS - THE ULTIMATE SEDIMENT CONTROL

The ERMA FIRST BWTS is the industry’s standard system based on the most efficient filtration device, the multi hydrocyclones. The system uses an advanced filtration and cyclonic separation stage for the removal of large organisms and sediment in combination with an electrolytic cell for the production of free chlorine and the elimination of the remaining viable organisms. The pre-filter is efficiently removing large particles, having a very low pressure drop even in very high sediment uptake. The hydrocyclone is comprised of specially-machined disks, made of synthetic material, stacked vertically, incorporating mini-cyclone geometries that enable sufficient separation of micro-organisms and sediments larger than 20 microns, by using centrifugal forces induced due to the water movement inside it. The combined effect of fluid velocity and centrifugal forces enables separation of particles from water through an overflow stream and an underflow where sediments are draining back the ballast water origin. Thus, even in very dirty-sedimented waters, the hydrocyclone needs no backflushing and provide stable water flow at all times, with stable pressure drop surpassing clogging risks as associated with typical backflushing filters.

[@nooneknowsmenow]

#Asterix

[@JimmySailor]

Is a Great Success!
Seriously though, in 10 years either UV or Electro Chlorination will win out and half the industry will look very stupid. My money is on UV winning though. Even a marginal increase in tank corrosion due to chlorination would mark it as a dead technology.

[@seawolf7610]

How do D2 compliant systems systems compare to older systems ? Are they able to manage the high rates when deballasting by gravity ?