A promising method of liquid separation in orbital station's life support systems

A combined method of liquid separation from a gas–liquid flow is presented based on an analysis of existing methods of separation and experience gained from the Russian space stations Salut, Mir and the International Space Station. This method combines the advantages of both water-holding materials and semi-permeable membranes. The paper describes an actual device as well as laboratory test results for materials and the separator. The separator described has successfully been in experimental operation on the ISS since the 1st of September 2009.

► Different types of static separators that can operate in zero gravity were analyzed.
► A combined method of liquid separation from a gas–liquid flow and a device, which implmented this method, were proposed.
► The test's results of components of the separator were given.
► Tests which determined the separator's type of filtration were carried out.
► Bench tests and experimental operation confirmed reliability and effectiveness of separation.