How do vessels and cruise ships clean the oily bilge water?
What type of machines and products do they use?

Hi!

Our search returned the following results:

Researching this topic proved to be quite a bit of fun. The best
description I was able to find about oily water treatment is at the
following site:

Coffin World Water Systems
http://www.cworldwater.com/helisep/helisep_principles.html

While this page describes an oily water seperator system specific to
this company, it provides a great general overview of the process.

Additional systems/products I found:

FACET International Water Treatment Products
http://www.facetinternational.net/products.html

Promac BV Water Treatment Systems:
http://www.promac.nl/onder3.htm

Coffin World Water Systems:
http://www.cworldwater.com/

The Alfa Laval Corporation provides Bilge Water treatment systems for
Carnival Cruise Lines:
http://www.alfalaval.com/scripts/WebObjects.dll/ecore.woa/wa/showNode?siteNodeID=1712&contentID=-1&languageID=1

I hope this satisfactorily answers your question. Have a great day!

Axe

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Clarification of Answer by axe-ga on 09 May 2002 11:35 PDT

You can find further products by searching Google with the following keywords:

"bilge water" treatment
"bilge water" cleaning system
"bilge water" filtering system