| 摘要 |
A water purifier is provided comprising a vertically disposed, elongated vessel containing a granular adsorbent and having retention means therefor at opposite ends thereof. Inlet and outlet conduits are arranged to provide upward flow of water through the adsorbent and the retention means at the upper end is a fine filter, having sufficient resistance to flow so that a back pressure from about 5 to about 20 psi prevails in the vessel when water at ambient temperature is passed through the vessel at a rate of 5 gallons per hour per square inch of said upper end retention means. Preferably, the lower end retention means is also a fine filter providing at least equivalent resistance to flow. |
