城市有机质废弃物的生物质能源回收技术与工程案例

Biomass Energy Recovery Technology and Engineering Case for Urban Organic Waste

我国未经有效处理的城市污水厂剩余污泥和有机质废弃物产生量巨大,对环境造成了巨大威胁,因此提出污泥和城市有机质废物厌氧共发酵工艺。该工艺尽可能回收生物质能源并对生物质进行资源化利用,不仅能解决城市污泥和有机质废弃物的出路问题,而且对于缓解当前我国能源短缺和土壤矿化问题起到重要作用。简要介绍了厌氧消化的典型工艺流程、优势、工程应用的影响因素及国内外的进展与案例分析。综合以上分析可知,该工艺是获得生物质能源的有效方式,技术上具有可行性,是实现环境效益、社会效益和经济效益统一的有效途径。

Large amounts of untreated excess sludge from municipal sewage treatment plants and urban organic waste are produced in China, which seriously threatens the environment. Therefore, the anaerobic co-digestion technology of excess sludge and urban organic waste is proposed. This technology can recover biomass energy and use biomass as a source, thus it reduces the amount of final sludge and urban organic waste for disposal, and plays an important role in relieving the energy shortage and soil mineralization. The typical process of anaerobic digestion, the advantage of co-digestion technology, the factors affecting the engineering application and the engineering case at home and abroad are introduced. Based on the above analysis, the technology is an effective method to achieve biomass energy, it is feasible in technology and an effective way to realize the unity of the environmental benefit, social benefit and economic benefit.