Fermentative hydrogen production from beet sugar factory wastewater treatment in a continuous stirred tank reactor using anaerobic mixed consortia

查看全文 作　　者：Gefu [1]ZHU;Chaoxiang [1]LIU;Jianzheng [2]LI;Nanqi [2]REN;Lin [1]LIU;Xu [1]HUANG

机构地区：[1]Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;[2]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

出　　处：《Frontiers of Environmental Science & Engineering》索引2013年第7卷第1期,共8页

基　　金：This research was supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (No. KZCX2- EW-402-02); Provincial Science Foundation of Fujian (No. 2010J01314); The Key Project of Fujian Provincial Science & Technology Program (No. 2012Y0069) and the National Natural Science Foundation of China (Grant No. 50808152). 摘　　要：A low pH, ethanol-type fermentation process was evaluated for wastewater treatment and bio-hydrogen production from acidic beet sugar factory wastewater in a continuous stirred tank reactor (CSTR) with an effective volume of 9.6 L by anaerobic mixed cultures in this present study. After inoculating with aerobic activated sludge and operating at organic loading rate (OLR) of 12 kgCOD·m-3·d-1, HRT of 8h, and temperature of 35℃ for 28 days, the CSTR achieved stable ethanol-type fermentation. When OLR was further increased to 18 kgCOD·m-3·d-1, on the 53rd day, ethanol-type fermentation dominant microflora was enhanced. The liquid fermentation products, including volatile fatty acids (VFAs) and ethanol, stabilized at 1493mg·L-1 in the bioreactor. Effluent pH, oxidation-reduction potential (ORP), and alkalinity ranged at 4.1-4.5, -250-(-290) mV, and 230-260mgCaCO3·L-1. The specific hydrogen production rate of anaerobic activated sludge was 0.1 L'gMLVSS-1· d-1 and the COD removal efficiency was 45%. The experimental results showed that the CSTR system had good operation stability and microbial activity, which led to high substrate conversion rate and hydrogen production ability. 关键词：ferlnemative HYDROGEN PRODUCTION continuous stirred tank reactor (CSTR) specific HYDROGEN PRODUCTION rate BEET sugar FACTORY wastewater ethanol-type fermentation

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Fermentative hydrogen production from beet sugar factory wastewater treatment in a continuous stirred tank reactor using anaerobic mixed consortia

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