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At the initial phase of the construction of the international space station (ISS) water supply will be provided by the systems located in the Russian segment. The paper reviews the systems for water recovery from humidity condensate and urine to be incorporated in the Russian segment of the ISS. The similar systems have been successfully operated on the Mir space station. The updates aim at enhancing system cost-effectiveness and reliability. The system for water recovery from humidity condensate (WRS-C) features an added assembly for the removal of organic contaminants to be catalytically oxidized in an air/liquid flow at ambient temperature and pressure. The system for water reclamation from urine (WRS-U) incorporates a new distillation subsystem based on vacuum distillation with a multistage rotary distiller and a vapor compression or thermoelectric heat pump. The updating of the WRS-C system will enable an increase in the multifiltration bed's life at least two fold.

The paper reviews an integrated system for space station water supply based on a combination of water recovery systems and a water resupply system. The water balance data and system performance data in long-duration operation on the Mir space station are presented. A water supply concept for the Russian's segment (RS) of the International Space Station (ISS) is substantiated.

The paper analyzes and summarizes experience in developing and flight operation of the system for potable water recovery from humidity condensate. The system schematic and its hardware are reviewed. The system performance data on Salut and Mir space stations are presented. Succession to the development of a similar system for the International Space Station (ISS) service module is shown.

This paper deals with water reclamation from humidity condensate and urine schematics and processes realized on orbital space stations Salut and Mir. The results of research in updated processes and schematics for condensate separation, purification and distillation with heat energy recovery are described. It is shown that the processes and hardware make possible to reduce energy demand and the weight of the water recovery systems under operation on space stations.