Istanbul Technical University, Department of Environmental Engineering, Istanbul, Turkey.
Water Sci Technol. 2012;66(3):556-63. doi: 10.2166/wst.2012.203.
The aim of this study is to evaluate the feasibility and the energy recovery potential of mesophilic (30-35 °C) anaerobic digestion of animal wastes (manure) at a centralized biogas plant (CBP) for 35,000 cattle. The proposed CBP is composed of an equalization tank followed by pasteurization and 3+[1/2] modules; i.e. each module consists of four completely mixed anaerobic reactors with a capacity of treating the manure from 10,000 cattle. The effect of maize silage loading, as the co-substrate, both on biomethane production and feasibility of the system was also evaluated. Besides, the transport fuel substitutes of the produced biomethane with or without co-substrate were also investigated. Results of the proposed CBP indicated that biomethane production increased ca. 1.65 fold with co-substrate addition and pay-back periods for one module treating 10,000 cattle manure are calculated to be ca. 11 and 7.0 yr without and with silage addition, respectively. Besides, considering the potential revenue when replacing transport fuels, about 74 heavy goods vehicles or 1,560 cars may be powered per year by the biogas produced from the proposed CBP where the co-digestion of manure and maize silage is applied.
本研究旨在评估在一个 35000 头牛的集中沼气厂（CBP）中进行中温（30-35°C）动物废物（粪便）厌氧消化的可行性和能量回收潜力。拟议的 CBP 由一个均衡罐、巴氏消毒和 3+[1/2]个模块组成；即每个模块由四个完全混合的厌氧反应器组成，每个反应器的处理能力为 10000 头牛的粪便。还评估了玉米青贮饲料作为共底物对生物甲烷生产和系统可行性的影响。此外，还研究了未添加共底物和添加共底物时所产生物甲烷的运输燃料替代品。拟议的 CBP 结果表明，添加共底物可使生物甲烷产量增加约 1.65 倍，而不添加和添加青贮饲料的情况下，每个处理 10000 头牛粪便的模块的投资回收期分别约为 11 年和 7.0 年。此外，考虑到替代运输燃料的潜在收入，每年可能有大约 74 辆重型货车或 1560 辆汽车可由应用粪便和玉米青贮饲料共消化所产生的沼气提供动力。
