城市垃圾焚烧底灰资源化处理的可行性研究  

Study on the feasibility of municipal solid waste incineration bottom ash reutilization

作　　者：胡艳军[1] 李国建[2] 宁方勇[1] 任建莉[1] 

机构地区：[1]浙江工业大学机械工程学院能源与动力工程研究所,浙江杭州310014 [2]浙江理工大学建筑工程学院,浙江杭州310018

出　　处：《环境污染与防治》2011年第12期42-47,69,共7页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.51008279);浙江省环保科研计划项目(No.2010B15)

摘　　要：对天津某城市垃圾焚烧发电厂的垃圾焚烧底灰进行采样,测试评价了不同粒径焚烧底灰的工程特性及环境风险,并以焚烧底灰为骨料制备混凝土平板试件,分析了焚烧底灰中杂质组分对再生建筑材料的工程特性影响。研究发现,焚烧底灰的颗粒级配分布、主要元素成分及含量、砂当量、压实强度与天然建筑骨料相似,且不同粒径的焚烧底灰在使用过程中无毒性重金属浸出危害。但焚烧底灰作为建筑材料使用过程中,易出现裂缝等质量损伤状况,从焚烧底灰自身特性和其中的杂质组分在碱性环境下变化规律着手,分析了再生建筑材料产生损伤的可能原因,提出改善焚烧底灰工程性能的措施。The municipal solid waste incineration（MSWI） bottom ash was sampled in Tianjin MSW incineration power plant to investigate the engineering and environmental properties of different sized bottom ash.The MSWI bottom ash was applied as aggregate to prepare construction stick specimen,and possible influences of the special components contained in bottom ash on engineering properties of the recycled construction material were analyzed.The results showed that MSWI bottom ash had similar properties to natural construction aggregates,such as particle size distribution,major elements and theirconcentrations,sand equivalent,compaction density.Meanwhile,reutilization of the bottom ash was friendly to environment.However,a few cracks in the construction stick specimen were found during testing period.The factors influencing the cracks in the stick was analyzed in terms of the specific components of the bottom ash and other physical properties.Finally,method and technology of improving the properties of the recycled bottom ash aggregate were proposed.

关 键 词：垃圾焚烧底灰 建筑骨料 工程特性 环境特性 再生 

分 类 号：X705[环境科学与工程—环境工程]