摘要
生活垃圾焚烧飞灰(简称飞灰)中因含有二噁英,以及Pb、Cd、Hg等重金属等物质,属于危险废物。进入“十四五”以后,随着“无废城市”“循环经济”等理念的深化,推进飞灰无害化和资源化管理和处置是飞灰处理处置行业发展的必然趋势。本研究剖析了飞灰的来源和特性,梳理了我国针对飞灰建材化利用相关标准规范,分析了4种典型飞灰建材化利用技术路径,包括:水洗-水泥窑协同处置生产水泥熟料、高温烧结生产陶粒、高温熔融生产玻璃体、低温热分解-水洗生产加气砖等,对4种建材化利用的技术原理、工艺路线以及应用情况等进行分析和评估,并针对飞灰建材化利用需要解决的关键问题及未来发展趋势进行了探讨。
Municipal solid waste incineration(MSWI)fly ash is classified as hazardous waste because it contains dioxins,lead,cadmium,mercury and other harmful substances.Promoting the safe and resource-based management of the fly ash treatment and disposal industry has become an inevitable trend of development since the"14th Five-Year Plan"was implemented,with the concepts of"zero waste city"and"circular economy"becoming more profound.This article analyzes the source and characteristics of fly ash,sorts out the pertinent standards and specifications for the use of fly ash as building material in China,and analyzes four typical paths for utilizing fly ash as building materials,including:Washing and co-disposal of cement kilns to produce cement clinker,high-temperature sintering of ceramic granules,high-temperature fusion to produce vitreous,and lowtemperature pyrolysis-washing and production of gas bricks.Furthermore,this article also analyses and evaluates the four building material uses in terms of the technical principles,process routes and applications,and provides an analysis and assessment of the situation.The technical principles,process routes and applications of the four types of building materials utilization were analyzed and evaluated.Additionally,the main problems to be addressed and the future development trend of fly ash building materials utilization were discussed.
作者
张秀锦
张艺涛
庞俊峰
龙宏菲
郭剑波
刘俐媛
陈扬
ZHANG Xiujin;ZHANG Yitao;Pang Junfeng;LONG Hongfei;GUO Jianbo;LIU Liyuan;CHEN Yang(College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 101408,China;School of Energy and Environment,Southeast University,Nanjing 210018,China;Everbright Environmental(Suzhou)Solid Waste Treatment Limited,Suzhou 215101,China)
出处
《环境工程学报》
北大核心
2025年第1期250-258,共9页
Chinese Journal of Environmental Engineering
基金
中国科学院大学资助项目(E1E40504X2)。
关键词
生活垃圾焚烧飞灰
建材化
处理处置
利用路径
municipal solid waste incineration fly ash
building materialization
treatment and disposal
utilization pathways
