Water purification filter

Abstract

There is provided a water purification filter capable of molding into free shapes in which RB ceramics and/or CRB ceramics of 10 to 2,000 angstrom in pore diameter and 0.1 to 1.1 cm 3 /g in pore volume is used as an absorption and filtration material.

What is claimed is:  
     
         1 . A water purification filter in which RB ceramics and/or CRB ceramics of 10 to 2,000 angstrom in pore diameter and 0.1 to 1.1 cm 3 /g in pore volume is used as an absorption and filtration material.  
     
     
         2 . A water purification filter claimed in  claim 1  in which RB ceramics and/or CRB ceramics is a filter molded into a cylindrical form.  
     
     
         3 . A water purification filter claimed in  claim 2  in which plural thin cylindrical filters are fitted in order while altering a diameter of each cylinder.  
     
     
         4 . A water purification filter claimed in  claim 3  in which a zeolite fine powder or active carbon fine powder is filled between cylinders.  
     
     
         5 . A water purification filter claimed in  claim 1  in which RB ceramics and/or CRB ceramics is a filter molded into a solid cylinder form.  
     
     
         6 . A water purification filter in which a RB ceramics fine powder and/or CRB ceramics fine powder of 1 to 500 μm in an average particle diameter, 10 to 2,000 angstrom in pore diameter and 0.1 to 1.1 cm 3 /g in pore volume is supported on non-woven fabric or felt.  
     
     
         7 . A water purification filter claimed in  claim 6  in which an active carbon fine powder is supported on non-woven fabric or felt in addition to RB ceramics fine powder and/or CRB fine powder.  
     
     
         8 . A water purification filter claimed in  claim 7  in which a ratio of a RB ceramics fine powder and/or CRB ceramics fine powder to a well-known active carbon fine powder is 50 to 90:50 to 10 by weight.  
     
     
         9 . A water purification filter described in either one of claims 6 to 8 in which non-woven fabric or felt has properties of average 1 to 30 μm and the maximum 80 μm or less in pore diameter and pure water filtration discharge of 3 l/m 2 ·min. or more at differential pressure of 1 cm-H 2 O.