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尿液经过设备过滤，可转化为饮用水，而且“再生率”超过85%。

根据外媒综合报道，日本宇宙航空研究开发机构日前表示，日本已开发出一款净水装置，利用树脂材料制作的设备过滤，通过使用离子交换高分子化合物除去钙，并电解、透析有机物的方法，将尿液转化为饮用水。

报道指出，有关装置的尿液“再生率”可达到85%以上，一天最多可获取大约0.8升饮用水，而有关装置比目前国际空间站所使用，由美国航天局研发的净化装置，“再生率”为70%至80%的装置更高。

目前国际空间站所使用的装置，其过滤器以及其他部件每六个月更换一次，而日本的这项新装置在回收过程中产生的碱性水将被用来清洗系统的其他部分，因此设备在大约三年内无需更换。

报道也指出，科研人员计划于今年秋季将这一装置送往国际空间站，展开约半年的测试，以让宇航员把尿液净化成饮用水。