市政污泥焚烧灰渣处理模式的环境资源效益比较

doi:10.12066/j.issn.1007-2861.2294

上海大学学报(自然科学版)

市政污泥焚烧灰渣处理模式的环境资源效益比较

魏顺，王瑶，许云峰，钱光人，聂永有

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

通讯作者: 许云峰，博士，教授，研究方向为固体废弃物的资源化利用等。 E-mail:yfxu@shu.edu.cn
基金资助:
上海市科委科研计划项目“污泥焚烧灰渣资源可利用特性、长期稳定性研究及应用示范（19DZR1204902）”；城投环境科研项目“污泥焚烧灰渣资源化综合利用研究”

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

WEI Shun,WANG Yao,XU Yunfeng,QIAN Guangren,NIE Yongyou

1.School of Economics, Shanghai University, Shanghai 200444, China; 2.School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China; 3.Shanghai Institute of Geological Survey, Shanghai 200072, China

摘要/Abstract

摘要： 市政污泥焚烧处置是我国城市污泥减量化处理处置的发展方向，焚烧处置将产生40-50%的污泥焚烧灰渣。污泥焚烧灰渣具有硅铝磷富集的资源利用属性，如何实现市政污泥焚烧灰渣近零填埋和高值利用是国内外资源循环利用的研究热点。本文将物质流法与生命周期评价法相结合, 分析了市政污泥焚烧灰渣填埋、灰渣替代粘土和灰渣磷回收与残渣替代粘土三种处置场景的环境影响，并利用成本效益评价法对三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。其中，灰渣磷回收与残渣替代粘土是最优处置场景，其净收益为141.21元/吨灰渣。若将该方案推广至我国所有市政污水处理厂，年可提取26.26万吨/年的磷元素，共产生209.23万吨/年的鸟粪石产品。

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

Abstract: Municipal sludge incineration is the development direction of sludge reduction in China, which produces 40-50% incinerated sewage sludge ash（ISSA）.The ISSA is rich in silicon, aluminum and phosphorus. How to realize the near-zero landfill and high-value utilization of ISSA is a research hot-spot of resource recycling at home and abroad. In this paper, the material flow method and life cycle assessment method are combined to analyze the environmental impact of three disposal scenarios, including ISSA to landfill, ISSA instead of clay, phosphorus recovery from ISSA and then residue instead of 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 abiotic depletion potential elements, acidification potential, eutrophication potential, freshwater aquatic ecotoxicity, global warming potential, photo hem ozone creation potential. In addition, phosphorus recovery from ISSA and then residue instead of 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.

Key words: incinerated sewage sludge ash, disposal modes, phosphorus recovery, life cycle environmental assessment, economic benefits

中图分类号:

F062.1

魏顺, 王瑶, 许云峰, 钱光人, 聂永有. 市政污泥焚烧灰渣处理模式的环境资源效益比较[J]. 上海大学学报(自然科学版), doi: 10.12066/j.issn.1007-2861.2294.

WEI Shun, WANG Yao, XU Yunfeng, QIAN Guangren, NIE Yongyou. Comparison of Environmental and resource benefits of municipal sludge incineration ash disposal models[J]. Journal of Shanghai University（Natural Science Edition）, doi: 10.12066/j.issn.1007-2861.2294.