| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To eliminate the necessity of a coagulant for recovering useful resources to be disposed as industrial waste; to eliminate the necessity of equipment for coagulant injection, rapid agitation, slow agitation, precipitation and the like; to enable reuse as raw water for purified water in a plant at a high recovery rate. <P>SOLUTION: In a resource recovery type water treatment method which treats raw water of wastewater discharged from a factory and containing useful metal resources to recover the useful metal resources, the raw water is filtered with an MF membrane 4 to be concentrated 3, the MF membrane-filtered and concentrated water is subjected to solid-liquid separation 8 by centrifugal force, the solid-liquid separated and concentrated sludge containing the metal resources is recovered, the solid-liquid separated and dehydrated filtrate is returned to the raw water, and the MF membrane-filtered water is discharged as treat water subjected to activated carbon filtration. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
