生活垃圾渗滤液脱除垃圾焚烧飞灰中氯及重金属的实验  

EXPERIMENTAL STUDY ON REMOVAL OF CHLORINE AND HEAVY METALS FROM DOMESTIC WASTE INCINERATION FLY ASH BY ITS LEACHATE

作　　者：王梦璐 汪群慧 王晓娜 高明 吴川福 岛岗隆行 WANG Meng-lu;WANG Qun-hui;WANG Xiao-na;GAO Ming;WU Chuan-fu;SHIMAOKA Takayuki(School of Energy and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China;Department of Urban and Environmental Engineering,Kyushu University,Fukuoka 8190395,Japan)

机构地区：[1]北京科技大学能源与环境工程学院,北京100083 [2]九州大学,日本福冈8190395

出　　处：《环境工程》2019年第9期144-148,共5页Environmental Engineering

基　　金：政府间国际科技创新合作重点专项“焚烧飞灰生物反应器填埋脱毒脱氯及水泥窑协同处置技术”(2016YFE0127800)

摘　　要：对比考察了纯水与城市生活垃圾渗滤液对生活垃圾焚烧飞灰洗涤脱氯脱毒效果。结果表明:纯水与渗滤液均可脱除飞灰中水可溶性氯盐(KCl、NaCl和CaClOH),对飞灰中水不可溶性氯盐(Friedel’s盐)去除效果较差。渗滤液脱氯残渣中氯含量比纯水脱氯残渣低。此外,与纯水洗涤相比,渗滤液可进一步脱除飞灰中重金属(Cu、Pb、Zn)。飞灰在洗涤过程中可吸附渗滤液中的有机物及部分重金属(Mn、As、Cr)。因此,以渗滤液替代纯水用于飞灰洗涤脱毒是一种可行的协同处置方式。This study mainly investigated the effects of pure water and domestic waste leachate on the dechlorination and detoxification of fly ash from incineration of domestic waste.The experimental results showed that both pure water and leachate could remove water-soluble chlorine salts (KCl, NaCl and CaClOH) from fly ash,while the removal effect on water-insoluble chlorine salts (Friedel’s salt) from fly ash was poor.In addition,compared with pure water washing, leachate could further remove heavy metals (Cu, Pb, Zn) from fly ash.Simultaneously,fly ash could also adsorb organic matter and some heavy metals (Mn, As, Cr) in leachate during washing.Therefore,using leachate instead of pure water to wash and detoxify fly ash was a feasible cooperative disposal method.

关 键 词：生活垃圾 飞灰 渗滤液 脱氯 重金属 

分 类 号：X70[环境科学与工程—环境工程]