城镇污水厂污泥处理处置工艺生命周期评价.pdf

中国给水排水2013年中国城镇污泥处理处置技术与应用高级研讨会论文集城镇污水厂污泥处理处置工艺生命周期评价刘洪涛,郑海霞,陈同斌,高定,郑国砥,陈俊(中国科学院地理科学与资源研究所环境修复中心,北京100101) 摘要:本文主要对目前国内主流的三种污泥处理处置工艺:好氧发酵、填埋、焚烧进行了基于生命周期的系统评价,分别从致癌风险、温室效应、土地占用和能耗四个方面,横向比较了三种工艺的环境负荷(Pt)。结果显示,好氧发酵在致癌风险、温室效应和能耗均表现出较低负荷值,而焚烧则在运行能耗、致癌风险上负荷较高,填埋的主要问题集中在土地占用和温室效应两方面。关键词:污泥;好氧发酵;焚烧;填埋;生命周期评价 LifeCycle Assessment on Three Typical Sewage Sludge Treatment or Disposal Technologies LiuHong-tao,Zheng Hai-xia,Chen Tong-bin,Gao Ding,Zheng Guo-di,Chert Jun (Center forEnvironmental Remediation,Institute ofGeographic Sciences andNatural Resources Research,ChineseAcademy ofSciences,Beijing 100101,China) Abstract:Three typical sewage sludge treatment and disposal technologies including post,landfill andincineration were assessed based Oillifecycle load(Pt)was calculated pared fromfouraspects ofcarcinogenic risk,greenhouse effect, upancy rateandenergy indicatethat post shows alower Pt amount incarcinogenic risk,greenhouse effectandenergy consumption than landfilland ,incineration has adisadvantage incarcinogenic riskandenergy consumption. Similarly,the main problem oflandfillfocuses upancy rateandgreenhouse effect. Key words:Sewage sludge;post;incineration;landfill;life cycle assessment 城市污泥目前已成为我国污水处理行业非常紧迫的问题,污泥得不到合理处置,污水处理的环境效益将被削减。目前国内污泥处理处置相关研究成果,多集中在污染风险、工艺调控等方面。实际上,从污泥自污水池沉淀,直到终端处置,形成了具有生命周期特点的物质与能量循环过程。目前,针对生命