长江经济带典型城市多源污泥协同建材利用集成技术路线研究

Study on Integrated Technology Route of Multi-source Sludge Collaborative Building Material Utilization in Typical Cities of Yangtze River Economic Belt

摘要:

长江经济带典型城市多源污泥协同建材利用技术路线集成为“长江大保护”水生态环境修复提供重要技术支撑。基于市政污泥、河湖底泥、通沟污泥、工程泥浆等四种污泥含水率、有机质含量、热值、重金属含量等特征分析并进行了属性分类,筛选并分析了厌氧消化+脱水、脱水/干化、脱水/干化+焚烧等污泥协同处理技术路线的技术参数、成本等,以及制砖、制水泥、制陶粒、制工程用土等污泥协同建材利用技术路线的污染风险、成本等,同时结合多源污泥泥质泥量来源稳定性分析,进行了多源污泥协同建材利用泥质与处理工艺参数、处理工艺和资源化工艺经济适配性分析,最终提出了多源污泥协同建材利用集成技术路线。

Abstract:

The technical route integration of multi-source sludge collaborative building material utilization in the typical cities in the Yangtze River Economic Belt provides the important technical support for the restoration of water ecological environment in the "Yangtze River Protection". Based on the analysis of the characteristics of water content, organic matter content, calorific value and heavy metal content of the municipal sludge, river and lake sludge, ditch sludge and engineering sludge, and the attributive classification, the technical parameters and costs of sludge collaborative treatment routes such as the anaerobic digestion with dehydration, dehydration or drying, dehydration or drying with incineration, and the pollution risk and cost of utilization technologies of sludge collaborative building materials such as brick making, cement making, ceramsite making and engineering soil making are screened and analyzed. At the same time, combined with the stability analysis of multi-source sludge quality, quantity and source, the economic adaptability of multi-source sludge collaborative building material utilization with treatment process parameters, treatment process and resource process is analyzed. Finally, the integrated technical route of multi-source sludge collaborative building material utilization is put forward.