期刊
BIORESOURCE TECHNOLOGY
卷 105, 期 -, 页码 1-8出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.11.024
关键词
Anaerobic digestion; Waste activated sludge; Greasy sludge; LCFAs; Inhibition
资金
- Saur Research and Development
In this study, the maximum ratio of greasy sludge to incorporate with waste activated sludge was investigated in batch and CSTR experiments. In batch experiments, inhibition occurred with a greasy sludge ratio of more than 20-30% of the feed COD. In CSTR experiments, the optimal greasy sludge ratio was 60% of the feed COD and inhibition occurred above a ratio of 80%. Hence, batch experiments can predict the CSTR yield when the degradation phenomenon are additive but cannot be used to determine the maximum ratio to be used in a CSTR configuration. Additionally, when the ratio of greasy sludge increased from 0% to 60% of the feed COD. CSTR methane production increased by more than 60%. When the greasy sludge ratio increased from 60% to 90% of the feed COD, the reactor yield decreased by 75%. (C) 2011 Elsevier Ltd. All rights reserved.
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