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A filter assembly which is incorporated into the Russian Trace Contaminant Control Assembly was tested for removal of airborne trace chemical contaminants in a closed loop 9 m3 system. Given contaminant loading rates and maximum allowable atmospheric concentrations, the Russian system was able to maintain system air concentrations below maximum allowable limits. This was achieved for both a new filter system and for a system where a part of it was pre-loaded to emulate 3 years of system age.

The paper deals with the problems of development of physico-chemical systems for water recovery and atmosphere revitalization for long-duration space stations. Schematics of regenerative life support systems featuring a high degree of closure and biotechnological components are presented. A year-long experiment has proved the possibility for Man to stay in a closed artificial environment for a long time by consuming substances regenerated by physico-chemical means from the end products of life. A complex of the life support systems (LSS) on Mir space station allowing for oxygen and 90% water recovery as well as its future updating is considered.

The paper deals with some aspects and results of research in major processes and hardware of a system for hygiene waste water recovery and its architecture concepts. A principal system schematic and its functions on Mir space station are presented. It is shown that physico-chemical means ensure cost-effective recovery with minimum energy demand and resupply which is particulary important for long-duration space missions.