BILGE WATER SYSTEM AND METHOD OF OPERATING BILGE WATER SYSTEM

摘要

The present invention relates to a method and system of operating a bilge water system (1) comprising a bilge water container (2), a bilge water pump (4) downstream of the bilge water container, a heater (6) downstream of the bilge water pump and upstream of an oily water separator (8). The bilge water container, the bilge water pump, and the oily water separator are arranged in fluid connection via a bilge water supply line (10). The oily water separator comprises a bilge water inlet (18) in fluid connection with the bilge water supply line (10), a first outlet (28) in fluid connection with a water discharge line (110) for separated water and a second outlet (38) for conveying separated sludge to a sludge container (12). The system further comprises a freshwater control valve (14) in fluid connection with the separator (8) and a freshwater container (16). The system is configured to perform determining a conductivity value (Cv) of the bilge water by means of a sensor in the bilge water supply line and/or in the water discharge line, receiving the determined conductivity value (Cv) in a control unit and comparing the determined conductivity value (Cv) with a reference conductivity value (Cref) in the control unit. The system is configured to initiate a corrosion reducing operational mode if the determined conductivity value is higher than the reference conductivity value (Cref) or continuing with a normal operational mode, if the conductivity value (Cv) is lower than the reference conductivity value (Cref).