湿法脱除垃圾焚烧飞灰重金属的研究  

Using of Wet Process to Remove of Heavy Metals from Waste Incineration Fly Ash

作　　者：毛中建 王中页[2] 罗津晶[2] 张杰儒[2] 季喆 

机构地区：[1]新源(中国)环境科技责任有限公司,福建厦门361008 [2]厦门大学环境与生态学院环境科学研究中心,福建厦门361005

出　　处：《环境卫生工程》2013年第2期6-8,10,共4页Environmental Sanitation Engineering

摘　　要：以福建和湖北垃圾焚烧发电厂采集的飞灰为研究对象,比较了单独水洗、水洗结合酸洗等工艺对飞灰重金属的洗脱效果,考察了不同酸洗工艺条件下飞灰重金属浸出毒性的变化。结果表明:在水灰比为10时水洗效果最佳,水洗结合酸洗处理可有效降低飞灰重金属浸出毒性,部分飞灰经湿法脱除后可作为普通废物排放。Taking the fly ash samples obtained from Fujian and Hubei waste incineration plants as the research subjects, the effects of water washing and wash＋acid washing for heavy metal extraction from fly ash were compared. The changes of leachimg toxicity of heavy metals from fly ash were investigated under different acid washing conditions. The results showed that the effect of water washing was best when the ratio of water to fly ash was 10 ： 1 （L/kg）. Water＋acid washing process can effectively reduce the leachimg toxicity of heavy metals. Part of fly ash can be disposed as ordinary waste after treated by wet- extraction process.

关 键 词：飞灰 水洗 酸洗 重金属洗脱 

分 类 号：X701.2[环境科学与工程—环境工程]