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文章在对常州市武进区礼嘉镇进行面源生物质废弃物调研的基础上详细比较了生物质废弃物发酵制备燃料乙醇技术、生物质废弃物发酵制沼气技术、生物质废弃物气化炉技术以及生物质废弃物焚烧发电技术,从技术、经济、应用前景等多方面考量并最终筛选出适合于礼嘉镇试点区域的生物质废弃物利用技术。在对所选技术的应用实例进行调查研究的基础上建立了太湖流域废弃生物质能源资源化的总体方案:本方案拟定在试点区域结合实际情况将部分不适宜用于发酵制备燃料乙醇的农作物秸秆以及禽畜粪便、生活污水污泥等各类生物质废弃物用于生物质发酵制沼气项目,以满足当地部分居民的日常生活所需,同时收集剩余适宜制备燃料乙醇的生物质秸秆用于建设具有广阔应用前景的生物质发酵制备乙醇项目,对体系中产生的污水污泥等废弃物以污泥亚临界水热处理技术予以预处理后用于发酵制备沼气项目。总体方案每年生产燃料乙醇1 875.7 t,生产沼气259.2万m3,副产有机肥1 874.8 t,产生经济效益1 608万元,10年运行期的净收益现值为12 555.4万元,是具有广阔前景且行之有效的循环经济方案,是推动自然生态和人类社会和谐发展的绿色经济方案。
Based on the investigation of surface-sourced biomass wastes in Lijia Town, Wujin District, Changzhou, the paper detailedly compared the technologies of biomass ethanol fermentation, bio-waste biogas fermentation, biomass waste gasifier technology As well as biomass waste incineration power generation technology, from the technical, economic, application prospects and many other considerations and ultimately screened for the pilot area of Lijia City biomass waste utilization technology. Based on the investigation of the application of the selected technology, an overall plan for recycling of waste biomass energy in the Taihu Lake Basin was established. The scheme proposed to partially replace the crop straw that is not suitable for fermentation in the experimental area in combination with the actual conditions As well as various types of biomass wastes such as livestock excrement and domestic sewage sludge are used in the biogas fermentation project to meet the daily needs of local residents while collecting the remaining biomass straw suitable for fuel ethanol production for construction Biomass fermentation with broad application prospects for the preparation of ethanol project, the system of sewage sludge and other wastes generated by sludge sub-critical heat treatment technology to be used for fermentation preparation biogas project. The overall plan is to produce 1,875.7 tons of fuel ethanol, 2,592,000 m3 of biogas and 1,874.8 tons of by-product organic fertilizer per year, bringing about an economic benefit of 16.88 million yuan. The present value of net income during the 10-year operation period is 125.54 million yuan, The promising and effective circular economy program is a green economy that promotes the harmonious development of natural ecology and human society.