EN drop down
published on 1 March 2022

Separation of oil from bilge water of ships with ceramic membranes and 15ppm hydrocarbon detector

Separation of oil from bilge water of ships with ceramic membranes and 15ppm hydrocarbon detector.

Alsys helps to prevent pollution caused by boat effluents. With the introduction of the KLEARSEP™ crossflow filtration system.

It is an oily water separator (also called OWS) specially designed for the treatment of bilge water of ships. The membrane oil separator consists essentially of a static prefilter and a membrane filtration unit.

Separation of oil from bilge water of ships with ceramic membranes and 15ppm hydrocarbon detector

Our equipment is very different from other OWS. First of all, because KLEARSEP™ respects the value < 15 ppm required by the IMO (Marine Environment Protection Committee). Most importantly, the KLEARSEP™ system produces treated water with a hydrocarbon concentration of less than 5 ppm, starting immediately!

It has the "IMO resolution MEPC.107(49)" approval, issued by the U.S. Coast Guard Maritime Security Center. According to the provisions of this approval, the treatment rate is 1.5 m³/h, 2 m³/h or 2.5 m³/h. By compliance with the requirements, Alsys delivers a certificate of conformity and stamps the mark of conformity (wheelmark) on the equipment.

The spaces in the bilges of ships are very restricted. This is why the size of the KLEARSEP is smaller and specified in the IMO. This equipment is installed by our expert teams on new vessels as well as on existing constructions. Alsys assists at the start of the installation on the ships.

KLEARSEP™ is a filtration system equipped with ceramic membranes

Ceramic mineral membranes are real physical barriers, unlike centrifugal or decanting systems. Indeed, mineral membranes allow to concentrate the substances contained in the oily water of ships' bilges.

These substances are oils and hydrocarbons. The mineral membranes used have a cut-off that blocks oils and hydrocarbons.

The hydrocarbons are therefore concentrated, which allows them to be stored, if necessary, on board. And then upon arrival at the dock to send them to processing. The frequency of removal of concentrated water is low, about twice a year.

The installation is managed by an PLC. This automatic control allows to regulate and control the flow of treated water. This treatment rate is high and regular. The various sensors inform the operator, on a remote terminal, of the processing rate. Alsys offers an optional GPS-monitoring black box.