Using an expended granular sludge bed reactor for advanced anaerobic digestion of food waste pretreated with enzyme: The feasibility and its performance

被引：10
作者：
Zhang, Sitong [1 ]
Zou, Lianpei [1 ]
Wan, Yulan [1 ]
Ye, Min [1 ,2 ]
Ye, Jiongjiong [1 ]
Li, Yu-You [1 ,2 ]
Liu, Jianyong [1 ]
机构：
[1] Shanghai Univ, Sch Environm & Chem Engn, 333 Nanchen Rd, Shanghai 200444, Peoples R China
[2] Tohoku Univ, Grad Sch Engn, Dept Civil & Environm Engn, Aoba Ku, 6-6-06 Aza, Sendai, Miyagi 9808579, Japan
来源：
BIORESOURCE TECHNOLOGY | 2020年 / 311卷
基金：
中国国家自然科学基金;
关键词：
Food waste; Advanced anaerobic digestion; Suspended solid; Expanded granular sludge bed; Enzymatic pretreatment; METHANE FERMENTATION; ACTIVATED-SLUDGE; CO-DIGESTION; HYDROLYSIS; EFFICIENCY; RECOVERY; ENERGY; BUFFER;
D O I：
10.1016/j.biortech.2020.123504
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The high content of solid organics in food waste (FW) results in a low and unstable anaerobic digestion (AD) efficiency. Improving methane production rate and process stability is attracting much attention towards advanced AD of FW. The feasibility of advanced AD of FW pretreated with enzyme was investigated by batch experiments and 164 days running of an expanded granular sludge bed (EGSB) reactor. Simulation study based on the results of batch experiments indicates it is possible to treat enzymatically pretreated FW using an EGSB reactor. During the running of an EGSB reactor, the organic loading rate went up to 20 g chemical oxygen demand (COD)/L.d, and the total COD removal rate reached 88%. The significance of this study is to achieve an advanced AD of enzymatically pretreated FW with a stable and efficient methane production with biogas residue being reduced greatly.
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页数：8
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