Oily Bilge Water


Oily bilge water is the wastewater that accumulates in the lowest part of a ship, known as the bilge. This water is a mixture of seawater, oil, and other contaminants that have leaked into the bilge from various sources, such as the engine room, fuel tanks, and cargo holds. Oily bilge water is a hazardous waste that can cause environmental damage if discharged into the sea. Therefore, ships are required to treat this water using an oily water separator before discharging it overboard. The oily water separator is a device that separates the oil from the water, allowing the water to be discharged within the legal limits. The remaining oil is stored in a sludge tank and disposed of onshore in an environmentally responsible manner.


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