| 摘要 |
PURPOSE:To obtain a water purification agent excellent in purification function, by mixing a zeolite compound, humic acid-containing soil and calcium. CONSTITUTION:25-35wt% of a zeolite compound, 45-55wt% of clayey soil containing 20% or more of org. components and 15-25wt% of calcium carbonate with purity of 90% or more are mixed and kneaded while the resulting kneaded mixture is baked at 300-1,000 deg.C for 8hr or more. |
