一种处理垃圾焚烧飞灰的新型重金属螯合剂  

A Brand-new Heavy Metal Chelator in Treating MSWI Fly Ash

作　　者：张旭健[1] 王廖沙[2] 王文丰[2] 孙昌春[3] 

机构地区：[1]苏州市环境监测中心站,江苏苏州215000 [2]苏州大学,江苏苏州215000 [3]苏州工业园区世普瑞环保科技有限公司,江苏苏州215000

出　　处：《环境科技》2014年第3期24-26,30,共4页Environmental Science and Technology

基　　金：苏州市科技创新专项资金项目(SG201031)

摘　　要：介绍一种新型重金属螯合剂—飞卡(FACAR),该螯合剂是一种液状氨基二硫代甲酸型螯合树脂,按一定的投加比经水稀释后与垃圾焚烧飞灰均匀混合,在常温下能与垃圾焚烧飞灰中的重金属反应使其稳定化,同时还与多氯代二苯并-对-二噁英和多氯代苯并呋喃发生常温脱氯反应,使得二噁英类化合物解毒。还介绍了该产品的开发背景、技术原理、工艺流程以及应用,最后分析展望了该产品在垃圾焚烧飞灰安全处置领域的应用前景。A new kind of heavy metal chelator FACAR was introduced. This chelator was a liquid dithiocarbamate chelating resin. MSWI fly ash was mixed with chelator which is diluted with a certain ratio. Through reaction, the resin could stabilize the heavy metal in MSWI fly ash at the room temperature. In addition, dioxin-like compounds could be detoxification by the dechlorinate reactions between the resin and polychlorinated dibenzo-on-dioxin and polychlorinated benzofuran at the room temperature. The development background, mechanism, technical process and application of this product were summarized. Finally, the potential of this chelator used in the field of MSWI fly ash safety disposal was prospected.

关 键 词：垃圾焚烧飞灰 固化/稳定化 重金属螯合剂 

分 类 号：X7[环境科学与工程—环境工程]