| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pretreatment method of incineration ash advantageous in reforming incineration ash for a safe state by effectively keeping temperature conditions of the incineration ash during pretreatment so that a substance at an eluting state into water from among substances such as salts, heavy metals and organic substances contained in the incineration ash is promoted for elusion, while a substance at a hardly eluting state is made hardly soluble. <P>SOLUTION: In the pretreatment method of incineration ash, the incineration ash is held in a pretreatment tank 12 and subjected to pretreatment of watering and ventilation, before reclamation or before reuse as an aggregate, a filling material, a backfilling material or the like. The incineration ash is kept at a temperature of 20°C or higher and 60°C or lower for at least 10 days since the beginning of the pretreatment. <P>COPYRIGHT: (C)2012,JPO&INPIT |
