市政污泥焚烧灰渣处理模式的环境资源效益比较  

Comparison of environmental and resource benefits of municipal sludge incineration ash disposal models

作　　者：魏顺 王瑶 许云峰[2] 钱光人[2] 聂永有[1] WEI Shun;WANG Yao;XU Yunfeng;QIAN Guangren;NIE Yongyou(School of Economics,Shanghai University,Shanghai 200444,China;School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,China;Shanghai Institute of Geological Survey,Shanghai 200072,China)

机构地区：[1]上海大学经济学院,上海200444 [2]上海大学环境与化学工程学院,上海200444 [3]上海市地质调查研究院,上海200072

出　　处：《上海大学学报（自然科学版）》2024年第2期362-372,共11页Journal of Shanghai University:Natural Science Edition

基　　金：上海市科委科研计划资助项目(19DZR1204902);城投环境科研资助项目。

摘　　要：将物质流法与生命周期评价法相结合,分析市政污泥焚烧灰渣填埋、灰渣替代黏土和灰渣磷回收与残渣替代黏土3种处置场景的环境影响,并利用成本效益评价法对3种处置情景的经济效益进行了比较分析.结果表明,灰渣资源化利用在矿产资源耗竭、酸化潜力、富营养化、淡水生态毒性、全球变暖、光化学效应等环境影响类别均优于灰渣填埋处置方式.灰渣磷回收与残渣替代黏土是最优处置场景,其净收益为141.21元/t灰渣.若将该方案推广至我国所有市政污水处理厂,可提取26.26万t/a的磷元素,共产生209.23万t/a的鸟粪石产品.The material flow method and life cycle assessment method are combined to analyze the environmental impact of three disposal scenarios,including incinerated sewage sludge ash(ISSA)to landfill,ISSA substitution for clay,phosphorus recovery from ISSA then residue substitution for clay.The cost-benefit method compares the economic benefits of the three disposal scenarios.The results show that ISSA utilization is superior to ISSA to landfill in solving the problems of abiotic resource depletion,acidification potential,eutrophication potential,freshwater aquatic ecotoxicity,global warming potential,photo hem ozone creation potential.In addition,phosphorus recovery from ISSA then residue substitution for clay is the best disposal scenarios with a net income of 141.21 yuan/ton ISSA.If the disposal path is extended to all sewage treatment plants in China,262,600 tons of phosphorus can be extracted and 2,092,300 tons of struvite can be produced each year.

关 键 词：污泥焚烧灰渣 处置模式 磷回收 生命周期环境评价 成本效益分析 

分 类 号：F062.1[经济管理—政治经济学]