| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for artificially producing iron fulvate from papermaking drainage while reducing the use amount of an aluminum-based flocculant, and to effectively utilize the obtained iron fulvate as a seawater damage inhibitor or a seawater damage improver in the seashore, or effectively utilize the iron fulvate as fertilizer for agricultural crops, greening or the like individually or by mixing the iron fulvate with organic fertilizer. <P>SOLUTION: The method for producing an iron fulvate-containing composition includes steps, wherein a polysilica iron flocculant in which the molar ratio of Si/Fe lies in the range of 0.1 to 1.0 is added into a papermaking drainage to produce papermaking sludge, and a humic substance in the papermaking sludge is converted into iron to produce iron fulvate. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
