Marinfloc’s combined exhaust gas recirculation (EGR) bleed-off water treatment system and bilge water separator was developed at MAN Energy Solutions facilities in Copenhagen
The company said the approval means only one separator is required instead of two, reducing the amount of equipment needed on a vessel and offering cost savings for shipyards, engine makers and shipowners.
The EGR process will generate a portion of bleed-off water that must be treated to below 15 ppm which is also the requirement for bilge water, and Marinfloc said its solution can reduce both capex and opex.
The company said capex can be reduced by combining both treatment systems without any negative impact on performance. In addition to this, Marinfloc expects a reduction in opex as maintenance, spare parts and training are only needed for one unit.
Marinfloc S&P managing director Martin Gombrii said of the decision, “Both treatment units are mandatory, so why not combine them? It would be foolish to have a separate treatment unit that might not even be in use for most of the year. This way neither crew nor owners will lose any sleep going into NECAs as they are already operating the unit on a daily basis”
The system is based on Marinfloc’s flocculation technology and includes the company’s ‘whitebox’ monitoring system to segregate the waste streams, eliminate cross contamination and record all activities.
Marinfloc began developing the solution in 2016 at MAN Energy Solutions facilities in Copenhagen and concluded after the system design received approval from DNV GL in early 2020. The solution has also received approval from MAN Energy Solutions and fulfils the requirements of MEPC 107(49) and MEPC 307(73).
Exhaust gas recirculation is used to reduce NOx when used with sulphur cap-compliant fuel in line with IMO’s Tier III requirements.