| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a treatment method that can remove cesium and heavy metals at the same time from wastewater that contains cesium and heavy metals. <P>SOLUTION: In the treatment method in which wastewater is added with a reduction iron compound, sedimentation consisting of the reduction iron compound is generated, the sedimentation is made to adsorb heavy metals in the wastewater, concentrated sludge having adsorbed the heavy metals is performed with solid-liquid separation, the heavy metals are removed from the wastewater; the wastewater including cesium with heavy metals is added with a reduction iron compound and a soluble cyanide, reduction iron compound sedimentation including a poor soluble cyano ferric acid salt having adsorptivity to cesium is generated, cesium and heavy metals in wastewater are made to be adsorbed in the sedimentation, concentrated sludge that adsorbs cesium and heavy metals is treated with solid-liquid separation, and cesium and heavy metals are removed from the wastewater. <P>COPYRIGHT: (C)2013,JPO&INPIT |
