| 摘要 |
PURPOSE:To improve the elution property of manganese, by adding a manganese ferrite high temp. cobalt adsorbing filter material and a high temp. adsorbing filter material selected from zirconium oxide or the like and having manganese adsorbing capacity to a column. CONSTITUTION:An inorganic material having manganese adsorbing capacity selected from zirconium oxide, tin oxide, titanium oxide and tantalum oxide is molded into a manganese removing high temp. inorg. adsorbing filter material 3 having a particulated or porous block shape. This adsorbing filter material 3 is mixed with a manganese ferrite adsorbing filter material 1 and the resulting mixture is packed to constitute a mixed bed type column 4. A composite bed type column 5 may be formed by packing the manganese ferrite adsorbing filter material 1 and the manganese removing adsorbing filter material 3 in a laminar form. By this method, manganese eluted from the adsorbing filter material 1 can be adsorbed and removed by the manganese removing adsorbing material.
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