| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the following problems that, since the dry type conventional methods where a sludge containing dicyclohexylcarbodiimide and lead components is incinerated together with a drum cannot make the temperature of the whole sludge in the drum uniform, perfect removal of dicyclohexylcarbodiimide is difficult, and the inside of an incinerator and an exhaust duct are polluted with lead, so that cleaning operation after the pollution is accompanied by a large labor and a danger; and the wet type conventional methods make treatment processes complicated to increase the cost, and make metal recovery from a generated residue difficult. <P>SOLUTION: The sludge, such as an industrial waste containing compounds having imide groups, for example, dicyclohexylcarbodiimide, and metal components such as lead is mixed with an acid to be reacted and made harmless. The sludge after the reaction is used as a metal raw material. <P>COPYRIGHT: (C)2004,JPO</p> |
