Foodwaste as a co-substrate in a fed-batch anaerobic biowaste digester for constant biogas supply.
Foodwaste as a co-substrate in a fed-batch anaerobic biowaste digester for constant biogas supply.
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食物垃圾作为分批补料厌氧生物垃圾消化器中的辅助基质，以实现持续的沼气供应。
DOI：
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发表时间：
2009
影响因子：
2.7
通讯作者：
J. Winter
中科院分区：
文献类型：
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作者：
S. E. Nayono;C. Gallert;J. Winter
为了平衡沼气生产，研究了在夜间使用食物垃圾作为厌氧城市生物垃圾消化池的补充底物，以及在没有生物垃圾悬浮液的情况下作为唯一底物。分析是在模拟实际进料条件的半连续进料的实验室反应器中进行的。沼气产量分别为0.39和0.52m~3·kg(-1)COD，平均甲烷含量为62~66%。在半连续进料的生物反应器中，食物垃圾在夜间共消化，与白天只投喂和夜间不投喂的沼气产量相比，该反应器的总沼气产量增加了21-37%。经过三周的夜间和周末的补充消化，反应器的COD去除效率达到了与纯生物垃圾投加时期相同的水平(51-65%)。在与生物垃圾共消化的过程中，挥发性固体的去除效率在62%~65%之间，与仅饲喂生物垃圾的挥发性固体去除效率(63%~68%)相比，差异不显著。
The use of foodwaste as a supplementary substrate for an anaerobic municipal biowaste digester during night times and as the sole substrate during weeks ends, when no biowaste suspension was available was studied in order to equilibrate biogas production. Assays were performed in semi-continuously fed laboratory reactors with real substrates, simulating practical feed conditions. Biogas production of biowaste or foodwaste reached 0.39 or 0.52 m3.kg(-1) COD(added), with an average methane content of 62-66%, respectively. By foodwaste co-digestion during the night in a semi-continuously fed bioreactor, the total biogas production of the reactor increased by 21-37% compared to biogas production during biowaste-only-fed periods during the day and no feeding during the night. After three weeks of supplemenary foodwaste digestion during the nights and during week ends, the COD elimination efficiency of the reactor reached the same level as in biowaste-only-fed periods (51-65%). During co-digestion of foodwaste with biowaste, the volatile solids elimination efficiency was between 62-65%, which was insignificantly less compared to the volatile solids elimination during biowaste-only-fed periods (63-68%).