反滲透裝置是利用半透膜在壓力差的作用下使含鹽脫純的設(shè)備，它和自然滲透的方向相反，故稱為反滲透，亦稱逆滲透。根據(jù)各種物料的不同滲透壓，可以用大于滲透壓的反滲透法達(dá)到進(jìn)行分離、提取、純化和濃縮的目的。
反滲透可除去水中97%以上的溶解性鹽類和99%以上的膠體、微生物、微料和有機(jī)物等，成為現(xiàn)代純水、高純水、太空水、（超純水）工程中的設(shè)備。它突出的特點(diǎn)是耗能低、無污染、工藝簡單、出水水質(zhì)高、且易于操作和維修。
The reverse osmosis device is an equipment to purify the saline water under the action of pressure difference of semi permeable membrane. It is called reverse osmosis, as it is counter to natural penetration direction. Different materials have different osmotic pressures. The reverse osmosis method to adopt larger osmotic pressures id used to obtain the purpose to separate, extract purify and condense.
More than 97% soluble salts and 99% glues, microbe, particulate and organic substances, etc can be removed by the reverse osmosis. It becomes the most idea equipment for modern pure water, hyper pure water, and airspace water. The remarkable characteristics of the equipment are shown as lower energy consumption, no pollution, simple techniques, high quality water, easy operation and maintenance.
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