建筑固体废弃物治理全生命周期环境影响评价——以废旧粘土砖为例  

Life-Cycle Assessment of Environmental Impact in Disposal of Construction Solid Waste——Taking Wasted Clay Brick as an Example

作　　者：王地春[1] 张智慧[1] 刘睿劼[1] 关军[1] 

机构地区：[1]清华大学建设管理系,北京100084

出　　处：《工程管理学报》2013年第4期1-5,共5页Journal of Engineering Management

基　　金：国家自然科学基金项目(70971075)

摘　　要：为定量评价建筑固体废弃物治理的环境影响,基于生命周期评价(LCA)理论和建筑工程环境表现评价系统(BEPAS),综合考虑废弃物治理过程的环境代价以及再生材料的环境收益,以净环境代价为指标,建立了建筑固体废弃物治理环境影响评价框架。根据实际案例,定量评价了废旧粘土砖几种典型治理方式的环境影响,结果表明:填埋的净环境代价较高,其次是重复利用,而再生利用的代价相对较低;在再生利用方式中,净环境代价从小到大依次为水泥混合料、混凝土砌块原料、免烧砌筑水泥原料、混凝土骨料、烧砖瓦原料,其中烧砖瓦原料的净环境代价为正值,即所得到环境收益不足以弥补其环境代价。To quantitatively evaluate environmental impacts of disposing construction solid wastes, this article, based on the theory of life-cycle assessment （LCA） and building environmental performance analysis system （BEPAS）, builds the framework of environmental impacts assessment by creating index of ＂net environmental cost＂, which takes the environmental cost of disposal process and the environmental income of renewable materials into consideration. By applying the model, this paper evaluates the environmental impacts of several typical disposal modes of wasted clay brick. The result indicates that the net environmental cost of landfill is higher than that of reusing, and the cost of recycling is relatively lower. Among the several ways of recycling, the ascending order of net environmental cost is cement mixture, concrete block material, unburned masonry cement raw material, concrete aggregate and burned brick raw material. The net environmental cost of burned brick raw material is positive, which means the environmental benefit can＇t offset environmental cost.

关 键 词：建筑固体废弃物 治理方式 生命周期评价 净环境代价 废旧粘土砖 

分 类 号：X799.1[环境科学与工程—环境工程]