填埋场存量飞灰赋存重金属溶出影响因素研究进展  

Research Progress on the Influencing Factors of Heavy Metal Leaching from the Stock Fly Ash in MSW Landfill Sites

作　　者：孙英杰[1] 孙浩然 李锰 蔡淑霞 李卫华[1,2] 张庆建 马晓腾 占美丽 夏正启 王华伟 卞荣星[1] SUN Yingjie;SUN Haoran;LI Meng;CAI Shuxia;LI Weihua;ZHANG Qingjian;MA Xiaoteng;ZHAN Meili;XIA Zhengqi;WANG Huawei;BIAN Rongxing(Qingdao Solid Waste Pollution Control and Resource Engineering Research Center,School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao,Shandong 266520,China;State Environmental Protection Key Laboratory of Hazardous Waste Identification and Risk Control,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Qingdao Solid Waste Disposal Co.,Ltd.,Qingdao,Shandong 266300,China;Qingdao Water Group Environmental Energy Co.,Ltd.,Qingdao,Shandong 266002,China)

机构地区：[1]青岛理工大学环境与市政工程学院,青岛市固体废物污染控制与资源化工程研究中心,山东青岛266520 [2]中国环境科学研究院,国家环境保护危险废物鉴别与风险控制重点实验室,北京100012 [3]青岛市固体废弃物处置有限责任公司,山东青岛266300 [4]青岛水务集团有限公司,山东青岛266002

出　　处：《中国无机分析化学》2024年第10期1416-1424,共9页Chinese Journal of Inorganic Analytical Chemistry

基　　金：国家自然科学基金资助项目(52370139,52000111);青岛市科技惠民示范专项项目(24-1-8-cspz-10-nsh);山东省博士后创新项目(202103026);国家环境保护危险废物鉴别与风险控制重点实验室开放基金资助项目(2022YSKY-06);山东省高等学校青年创新团队人才引育计划“固体废物污染控制与资源化创新团队”项目(2021);山东省高等学校“青创团队计划”团队项目(2023KJ117);山东省大学生创新创业训练项目(S202310429145)。

摘　　要：稳定化预处理后送入生活垃圾填埋场填埋处置是长期以来我国垃圾焚烧飞灰的主要消纳路径。针对填埋年限跨度久、存量巨大的稳定化飞灰,其在复杂填埋环境影响下所赋存重金属的潜在环境风险是未来填埋场管理需面临的“突出难题”。基于“飞灰与原生垃圾非规范共填埋”背景,重点分析了pH值、溶解性有机物(DOM)、氧化还原电位(ORP)、盐度、CO_(2)氛围等外环境因素和稳定化药剂、粒径等对填埋飞灰中重金属溶出的影响,并探讨了不同影响因素的影响规律及各因素间的交互影响作用,评估了其潜在环境风险。指出填埋场渗滤液水质和内部环境因素的交互影响对填埋场存量飞灰中重金属的长期溶出行为及环境风险值得深入研究。因此,我国垃圾焚烧飞灰历史填埋处置中“豁免条款”的实施并没有改变飞灰自身的危险废物属性,未来应加强对填埋场大量存量稳定化飞灰危险属性和资源属性的协同关注。In China,the main pathway for the consumption of municipal solid waste(MSW) incineration fly ash has long been through stabilization pre-treatment followed by landfill disposal in MSW landfill sites.The potential environmental risk of heavy metals contained in stabilized fly ash,which has a long span of landfill years and a huge stock,under the influence of complex landfill environments,is a prominent challenge to be faced by landfill management in the future.Based on the background of “non-standard co-landfill of fly ash and raw MSW”,this paper focused on the effects of external environmental factors such as pH,DOM,ORP,salinity,CO_(2) atmosphere and stabilizing agents,particle size on the leaching of heavy metals in landfill fly ash.The impact patterns of different influencing factors and the interaction effects between each factor were discussed,and their potential environmental risks were evaluated.It is pointed out that the interaction of leachate water quality and internal environmental factors on the long-term leaching behavior and environmental risk of heavy metals in landfill fly ash is worthy of further study.Therefore,the implementation of the “exemption clause” in the historical landfill disposal of MSW incineration fly ash in China has not changed the hazardous waste attributes of fly ash itself.In the future,it is necessary to strengthen the collaborative attention to the hazardous and resource attributes of a large amount of stabilized fly ash stored in landfills.

关 键 词：垃圾填埋场 存量飞灰 重金属 溶出 影响因素 

分 类 号：O65[理学—分析化学] X705[理学—化学]