WATER RECOVERY SYSTEM FOR USE IN CONFINED SPACES

摘要

A water recovery system can treat water in a confined space. The wastewater treatment system includes a cation-exchange device in which water to be treated, such as wastewater originating in a space station, water discharged by the human body, water produced by condensing water vapor contained in the air, is directly introduced to a cation-exchange resin and thereby treated by cation exchange; a diamond-electrode electrolysis device in which organic substances, urea, and other nitrogen compounds contained in water discharged from the cation-exchange device are decomposed; a catalytic decomposition device in which the residual organic component is brought into contact with a catalyst to be decomposed; an electrodialysis device in which water discharged from the catalytic decomposition device is treated by electrodialysis to produce desalted water as well as an acid and an alkali; and a mineral adding device in which a mineral is added to the desalted water.

主权项

1. A water recovery system for use in a confined space, comprising:
a cation-exchange device in which wastewater originating in a confined space is treated by cation exchange with a cation-exchange resin; an organic-component decomposing device in which an organic component contained in water discharged from the cation-exchange device is decomposed; and an electrodialysis device in which water discharged from the organic-component decomposing device is treated by electrodialysis.