Leibniz-Institute for Agricultural Engineering Bornim, Max-Eyth-Allee 100, 14469 Potsdam, Germany.
Bioresour Technol. 2011 Jan;102(2):2086-92. doi: 10.1016/j.biortech.2010.08.002. Epub 2010 Aug 6.
Landscape management grass is generally harvested late, resulting in unfavorable composition for many utilization purposes. This study explores various technical concepts of biogas production and their economic viability. The Lower Oder Valley National Park is taken here as an example. This National Park in North-East Germany comprises large grassland areas with conservation-related restrictions on management. The concepts of biogas production and use considered are: (1) decentralized digestion and use of biogas at five autonomous combined heat and power (CHP) units, (2) decentralized digestion and delivery of the biogas to a centralized CHP unit, (3) decentralized digestion, upgrading of the biogas and feeding into the natural gas grid, and (4) one central biogas plant with centralized CHP unit. Annual costs and revenues of biogas production were calculated for each alternative. Biogas production from landscape management grass meets the conservational demands of late cutting periods and under certain circumstances shows a profit.
景观管理草坪通常收割较晚，不利于许多用途。本研究探讨了沼气生产的各种技术概念及其经济可行性。这里以德国东北部的下易北河谷国家公园为例。这个国家公园包含了大片的草地，管理上受到与保护相关的限制。所考虑的沼气生产和利用概念有：(1) 在五个自治的热电联产 (CHP) 单位就地消化和使用沼气，(2) 就地消化并将沼气输送到一个集中的 CHP 单位，(3) 就地消化、沼气升级并输入天然气网，以及 (4) 一个带有集中 CHP 单位的中央沼气厂。为每个替代方案计算了沼气生产的年度成本和收益。从景观管理草坪中生产沼气符合晚割期的保护要求，在某些情况下还能盈利。
