Kurita Water Industries Ltd. announced the delivery to the Japan Aerospace Exploration Agency (JAXA) of a flight model of its water recycling technology demonstration system for use at the Japanese Experiment Module “Kibo” on the International Space Station. There are plans to launch the system before the end of 2019 to start verification testing at the Japanese Experiment Module “Kibo”. The water recycling technology demonstration system consists of a control system and a water treatment system composed of an ion exchange unit, an electrolysis unit, and an electrodialysis unit. To purify urine to a potable water standard, the treatment system removes calcium and magnesium components contained in the urine through ion exchange, subjecting the organic matter to electrolysis, and removing the ions through electrodialysis. By carrying out the electrolysis under high temperature and high pressure, it is possible to completely break down persistent organic matter. This system is capable of a high level of water recycling (recycling rate of 85% or higher). In addition, it eliminates the need to replace consumables since the resin for the ion exchange unit is regenerated within the system. Compared to the water recycling systems currently used for the ISS, the equipment is one-quarter the weight and size of existing systems and consumes half the amount of power.