Start-up alternatives and performance of an UASB pilot plant treating diluted municipal wastewater at low temperature

被引：69
作者：
Alvarez, J. A.
Ruiz, I.
Gomez, M.
Presas, J.
Soto, M.
机构：
[1] Univ A Coruna, Dept Quim Fis & Enxenaria Quim 1, Galiza 15071, Spain
[2] Aquagest SA EDAR Silvouta, Santiago De Compostela 15896, Galiza, Spain
来源：
BIORESOURCE TECHNOLOGY | 2006年 / 97卷 / 14期
关键词：
anaerobic digestion; UASB; start-up; diluted municipal wastewater; low temperature;
D O I：
10.1016/j.biortech.2005.07.033
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Different start-up procedures of an upflow anaerobic sludge bed (UASB) digester were carried out. Start-up without inoculum (experiment A) was delayed for about 120 day. The digester reached 75-85% total suspended solids (TSS) removal, 54-58% total chemical oxygen demand (TCOD) removal and 63-73% biological oxygen demand (BOD5) removal at influent concentrations of 240-340 mg TCODi l(-1), temperatures of 13.5-15 degrees C and hydraulic retention times (HRT) of 10-11 h. Digested sludge was used as inoculum in experiment B. After the start-up period of 75 days, digester efficiencies were 58%, 41% and 54% for TSS, TCOD and BOD5 removal, respectively, working at 169 mg TCODi l(-1), temperature of 14 degrees C and HRT of 11 h. The sludge bed developed and stabilised quickly when using a hydraulically adapted inoculum (experiment C), but TCOD and BOD5 removals remained low and volatile fatty acids (VFA) accumulated in the effluent. (c) 2005 Elsevier Ltd. All rights reserved.
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收藏
页码：1640 / 1649
页数：10
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