One minute to understand thprinciplof water purifi
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   1. Household, commercial water purification Principle

   by the accuracy of the filter membrane pore size and the ability to remove dissolved ions classification, including water purification membrane microfiltration, ultrafiltration, nanofiltration, reverse penetration of four categories. The main means of livelihood drinking water filter is only ultrafiltration, nanofiltration, reverse osmosis three categories.


   1.1 ultrafiltration (the UF)

   Hollow fiber membrane filaments: 0.5-2.0mm, inner diameter of 0.3-1.4mm, which is covered with a microporous hollow fiber wall filtration accuracy of 0.5 to 0.01 micron pore size can retentate of molecular weight of thousands to hundreds of thousands. Raw water flow pressure lumen or outer membrane, respectively, constitute the external pressure and internal pressure. Ultrafiltration is a dynamic filtering process, are retained material can be concentrated with a small negative, without clogging the membrane surface, long-term continuous operation. Polymer membrane ultrafiltration membrane is one of the earliest development. Possible to remove impurities greater than 0.01 micron colloid, organic matter, bacteria and viruses but not completely filtered, drinking water can not be straight, need to boil drinking.

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