Anaerobic co-digestion of primary sludge and the fruit and vegetable fraction of the municipal solid wastes Conditions for mixing and evaluation of the organic loading rate 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Renewable energy
年/卷/期
2006 / 31 / 12
页码
2017-2024
ISSN号
0960-1481
作者单位
University of Leon, Institute of Natural Resources, Avda de Portugal no 41, Leon 24071, Spain;
作者
X. Gomez;M. J. Cuetos;J. Cara;A. Moran;A.I. Garcia;
摘要
This paper presents the results obtained for the digestion of primary sludge (PS) and co-digestion of this sludge with the fruit and vegetable fraction of municipal solid wastes (FVFMSW) under mesophilic conditions. This mixture was prepared with a PS content of 22%. The anaerobic digestion process was evaluated under static conditions and with different mixing conditions, with good results being found for the digesters with limited mixing, this representing an energy saving. The results for co-digestion of mixtures of PS + FVFMSW are better than those obtained from digestion of PS on its own. Biogas production for co-digestion is much greater thanks to the larger volatile-solid (VS) content of this feedstock. Nevertheless, biogas yield and specific gas production for the two digestion processes are similar, with values in the range 0.6-0.81 g~(-1) VS destroyed for the first parameter and in the range 0.4-0.61 g~(-1) VS fed for the second. The co-digestion process was also evaluated at different organic loading rates (OLR) under low mixing conditions, with stable performance being obtained even when the systems were overloaded.
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关键词/主题词
anaerobic digestion;mesophilic;primary sludge;organic fraction of municipal solid wastes (OFMSW);mixing conditions;
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