日本城市有机废弃物甲烷发酵资源化系统案例分析及最新研究进展

为建设可持续发展社会，日本近年来大力推动甲烷发酵以实现城市有机废弃物的减量化和资源化。首先介绍了日本城市有机废弃物资源化的2个实用案例，长冈市厨余垃圾沼气发电中心和丰桥市生物质资源利用中心的设计和运营状况。两者的长期稳定运行及产能效果验证了甲烷发酵技术在城市有机废弃物减量化和资源化上的可行性。其次，为了应对社会发展趋势和城市有机废弃物处理的技术需求，介绍了日本有关厨余垃圾、污泥以及废纸（城市有机废弃物的3大组分）的单独发酵及共发酵的部分研究成果。此外，简要介绍了应用厌氧膜生物反应器（AnMBR）进行相关高效甲烷发酵的最新研究成果。并根据实用案例调查和实验研究结果，以100万人口城市为例，对城市有机废弃物的各种甲烷发酵系统的产能效果进行了模拟概算。

RESOURCE RECOVERY FROM MUNICIPAL ORGANIC SOLID WASTE BY METHANE FERMENTATION IN JAPAN: FULL-SCALE APPLICATION AND RECENT RESEARCH

To establish a sustainable society, the Japanese government vigorously promoted the methane fermentation for the treatment of the municipal organic solid waste (MOSW) to achieve waste reduction and resource recovery. This paper introduced two full-scale plants in Japan, Nagaoka Food Waste Biogas Generation Center and Toyohashi Biomass Resource Utilization Center, for the anaerobic treatment of MOSW. The stable performance and the power generation indicated the feasibility of waste reduction and resource recovery from the MOSW by methane fermentation. Besides, some recent comprehensive investigations on the performance of the mono digestion and co-digestion in the treatment of the three most critical fractions of MOSW: food waste, sewage sludge and paper waste, were summarized. The recent researches on the application of anaerobic membrane bioreactor (AnMBR) for the MOSW treatment was also introduced. In addition, an analysis of the energy production potential was conducted for a city with a population of 1 million, based on the social investigation and experimental results.