Performance of thermal pretreatment and mesophilic fermentation system on pathogen inactivation and biogas production of faecal sludge: Initial laboratory results

文献类型： 外文期刊

第一作者： Yin, Fubin

作者： Yin, Fubin;Dong, Hongmin;Li, Zifu;Wang, Dongling;Ohlsen, Thomas

作者机构：

关键词： Anaerobic digestion;Faecal sludge;Thermal pretreatment;Pathogen inactivation;Sludge retention time;Biogas production

期刊名称：BIOSYSTEMS ENGINEERING （ 影响因子：4.123； 五年影响因子：4.508 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： The performance of thermal pretreatment of faecal sludge and biogas production of continuous stirred tank reaetor (TPCSTR) system on faecal sludge was evaluated in the laboratory of the University of Science and Technology Beijing, China. First, the effectiveness of thermal pretreatment on the inactivation of pathogens and the relationship between complete inactivation time and TS were researched. Second, the effect of sludge retention time (SRT) on the TPCSTR performance of faecal sludge was investigated. Results demonstrated that the time it took for the complete inactivation of pathogens (i.e., faecal coliform, salmonella spp., faecal streptococcus) was 60, 60, 80, 80, 100, 100, and 100 min for the TS faecal sludge concentrations of 1%, 2%, 4%, 6%, 8%, 10%, and 12%, respectively. The experiments showed that the TPCSTR process was stable and efficient to inactivate pathogens under the operation conditions (i.e., TS = 8%, agitation speed = 120 rpm, and temperature = 37 +/- 1 degrees C). The highest biogas production of faecal sludge was 453.21 L kg(-1) [TS] day(-1) at SRT of 25 days. (C) 2016 IAgrE. Published by Elsevier Ltd. All rights reserved.

分类号： S18

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