| 摘要 |
PURPOSE: A two-step water filter embedding elvan bed and activated carbon bed therein is provided to eliminate harmful components such as heavy metal, contaminant, harmful bacteria, odor, colors and chlorine without the using of high cost of purification system. CONSTITUTION: First, a tap water inlet(10) is connected with tap to receive serve water. After introduction into this two step water filter, tap water including impurities is primarily filtrated through an elvan bed(20) with a thickness of about 10 mm. In the course of the primary purification, especially the characteristics of tap water is changed to mild to drink by far-infrared rays emitted from elvan. Subsequently, tap water is admitted to flow into an activated carbon bed(30) passing through an intermediate partition(40) for secondary filtration.
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