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An oily water separator (OWS) (marine) is a piece of equipment specific to the shipping or marine industry. It is used to separate oil and water mixtures into their separate components. This page refers exclusively to oily water separators aboard marine vessels.
Marine oily water separator. The purpose of a shipboard oily water separator is to separate oil and other contaminants that could be harmful for the oceans. They are most commonly found on board ships where they are used to separate oil from oily waste water such as bilge water before the waste water is discharged into the environment.
A typical gravimetric API separator. An API oil–water separator is a device designed to separate gross amounts of oil and suspended solids from industrial wastewater produced at oil refineries, petrochemical plants, chemical plants, natural gas processing plants and other industrial oily water sources.
Coast Guard regulations prohibit discharge of oil within 12 miles (19 km) from shore, unless passed through a 15-ppm oil water separator, and unless the discharge does not cause a visible sheen. [19] Beyond 12 miles (19 km), oil or oily mixtures can be discharged while a vessel is proceeding en route and if the oil content without dilution is ...
Marpol Annex I details the discharge requirements for the prevention of pollution by oil and oily materials. It continues to enforce the oil discharge criteria described in the 1969 amendments to the 1954 Oil Pollution Convention. [4] It also introduces the idea of "special areas" which are considered to be at risk to oil pollution. Discharge ...
Discharge of oil within them has been completely outlawed, with a few minimal exceptions. [5] The first half of MARPOL Annex I deals with engine room waste. There are various generations of technologies and equipment that have been developed to prevent waste such as oily water separators (OWS), oil content meters (OCM), and port reception ...